14759( 2) - 14-Jul-2016 16:35:23 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14759 Version: 2 Check-in Time: 14-Jul-2016 16:35:23 STScI Edit Number: 0 Title What Happens in the Atmospheres of Hot Horizontal Branch Stars Near 20,000K? ------------------------------------------------------------------------------------ Type Cycle GO 24 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Thomas M. Brown Space Telescope Science Institute Y CoI: Dr. Andrea Bellini Space Telescope Science Institute N CoI: Dr. Santi Cassisi INAF, Osservatorio Astronomico di Teramo N CoI: Dr. Allen V. Sweigart NASA Goddard Space Flight Center N CoI: Prof. Alvio Renzini Osservatorio Astronomico di Padova N CoI: Dr. Maurizio Salaris Liverpool John Moores University N CoI: Dr. Emanuele Dalessandro Universita di Bologna N CoI: Dr. Luigi R. Bedin Osservatorio Astronomico di Padova N CoI: Dr. Antonio Aparicio Instituto de Astrofisica de Canarias N ------------------------------------------------------------------------------------ Abstract In the color-magnitude diagrams (CMDs) of many globular clusters, the horizontal branch (HB) exhibits a long blue tail extending to high effective temperatures. In such clusters, two discontinuities appear within the HB locus. The first discontinuity occurs at ~12, 000K, and was discovered by Grundahl et al. (1998). It is associated with the radiative levitation of metals and the gravitational settling of helium in the atmospheres of HB stars hotter than 12, 000K. The hot subdwarf stars of the Galactic field population exhibit the same phenomenon. The second discontinuity occurs at ~20, 000K, and was discovered by Momany et al. (2002). Its origin is unknown, but it appears at the same effective temperature in all globular clusters hosting HB stars near 20, 000K, regardless of cluster properties (age, chemical composition, mass, etc.). We propose STIS long-slit spectroscopy of 6 HB stars that straddle this feature in the HB distribution of omega Cen, the nearest globular cluster where the feature is well populated. With this approach, we can efficiently obtain high-quality UV and blue spectra that span the full wavelength range of the photometric bands where this CMD feature is most prominent - a range this is only accessible by HST. The resulting spectra will unambiguously reveal the nature of this phenomenon - one that is universal in the atmospheres of hot evolved stars - and will yield new insight into the role of diffusion and radiative levitation in these stars. ------------------------------------------------------------------------------------ Observations Description ------------------------ Our observations are straightforward, and similar to previous programs that also obtained UV spectroscopy of hot stars in the core of Galactic globular clusters with parallel broad- band imaging in the outskirts (e.g., GO-11665). We will obtain long-slit near-UV (NUV/G230L) and blue (CCD/G430L) STIS spectroscopy of omega Cen using the 52x0.5" slit, which will be truncated at a length of 25" in the NUV observations. Each slit position will center a pair of EHB stars along the slit axis, with dithering along the slit to remove detector artifacts. Each pair will include one star falling immediately to the blue of 14759( 2) - 14-Jul-2016 16:35:23 - [ 2] the M-jump and one star falling immediately to the red of the M-jump. Although each slit position has its own specific orientation, the Visit Planner shows ample schedulability at a distinct time of year for each position. The three 2-orbit visits are independent of each other, and 2-orbit visits present no scheduling challenges (unlike 4- or 5-orbit visits). We will offset to these three slit positions after an acquisition on an isolated bright star further from the cluster center. The offsets can be determined to high accuracy using extant HST imaging of the cluster. The extensive UV imaging also ensures the field is safe to observe, providing UV brightnesses and colors for all objects in the vicinity of our slit positions. The brightest star in the vicinity of each NUV/G230L observation is noted in the comments for each visit. The photometric catalogs of omega Cen enable accurate determination of the spectral quality we would obtain in these observations. For 5 of our targets, we will obtain a signal-to-noise ratio of ~30 per resolution element in the near-UV (where the metal absorption lines are most prominent), and ~100 per resolution element in the optical (for the Balmer lines and break). For the faintest target, these numbers will be 20 and 80, respectively. Although the field is crowded, the 52x0.5" slit is sufficiently narrow to exclude objects in the dispersion direction that would contaminate our spectra. These spectra would unambiguously characterize the spectral features responsible for the M-jump, given that the M-jump manifests itself as a ~10% change in a broad-band photometric color index. In parallel to the STIS spectroscopy, we will obtain WFC3 photometry in the same 3 filters of the UV Treasury survey of Galactic globular clusters (GO-13297; F275W, F336W, and F438W). The dithering of the prime STIS observations will only be in one axis, so the offsets will not be sufficient for resampling of the point spread function in these images, but they will enable removal of detector artifacts. In each visit, we perform a target acquisition on a relatively isolated star, and then offset to the site of the spectroscopic observations. The offset must not incur a change in guide stars, in order to place the targets accurately in the long STIS slit. If the offset employed in any of the three visits cannot be achieved on a single set of guide stars, due to the size of the offset, we can search for acquisition stars tailored to be nearby each of the three slit positions, but we would prefer to use the same acquisition star for all three visits. Once the offset executes in a given visit, we will obtain an image through the slit, prior to the spectroscopy, to characterize source placement within the slit and inform the data reduction. ------------------------------------------------------------------------------------ 14759( 2) - 14-Jul-2016 16:35:23 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5139-PAIR STELLAR CLUSTER, RA=13H26M36.6011S +/- 0.1", J2000 V = 17.1 +/- 0.2 m275=15.6 vegamag 1 GLOBULAR CLUSTER DEC=-47D28'26.36" +/- 0.1" Reference Frame: ICRS Comments: The coordinates above fall midway between the pair of stars. Coordinates come from HLA image, but shifted to agree with position of acquisition star in HSC, 2MASS, and GSC, which all agree to within a few WFC3/UVIS pixels in the HLA image. In the native HLA image (WFC3/F275W or WFC3/F814W), the position would be 13 26 36.8237 -47 28 27.02. This can be used to see the slit placement in Aladin. The photometric information above is for the fainter of the two stars in the slit (specifically, the southwestern star in the pair), as determined in the F275W HLA image of the cluster. The other star in the pair has the following photometry: V=16.6 m275 = 15.4 vegamag ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5139-PAIR STELLAR CLUSTER, RA=13H26M48.4411S +/- 0.1", J2000 V = 18.0 +/- 0.2 m275 = 16.3 vegamag 2 GLOBULAR CLUSTER DEC=-47D30'35.02" +/- 0.1" Reference Frame: ICRS Comments: The coordinates above fall midway between the pair of stars. Coordinates come from HLA image, but shifted to agree with position of acquisition star in HSC, 2MASS, and GSC, which all agree to within a few WFC3/UVIS pixels in the HLA image. In the native HLA image (WFC3/F275W or WFC3/F814W), the position would be 13 26 48.6637 -47 30 35.68. This can be used to see the slit placement in Aladin. The photometric information above is for the fainter of the two stars in the slit (specifically, the northwestern star in the pair), as determined in the F275W HLA image of the cluster. The other star in the pair has the following photometry: V=16.6 m275 = 15.4 vegamag ------------------------------------------------------------------------------------------------------------------------------------ 14759( 2) - 14-Jul-2016 16:35:23 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5139-PAIR STELLAR CLUSTER, RA=13H26M47.4861S +/- 0.1", J2000 V = 17.3 +/- 0.2 m275=15.7 vegamag 3 GLOBULAR CLUSTER DEC=-47D29'6.61" +/- 0.1" Reference Frame: ICRS Comments: The coordinates above fall midway between the pair of stars. Coordinates come from HLA image, but shifted to agree with position of acquisition star in HSC, 2MASS, and GSC, which all agree to within a few WFC3/UVIS pixels in the HLA image. In the native HLA image (WFC3/F275W or WFC3/F814W), the position would be 13 26 47.7087 -47 29 07.27. This can be used to see the slit placement in Aladin. The photometric information above is for the fainter of the two stars in the slit (specifically, the northeastern star in the pair), as determined in the F275W HLA image of the cluster. The other star in the pair has the following photometry: V=16.8 m275 = 15.6 vegamag ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC5139-ACQ STAR, HORIZONTAL BRANCH RA=13H26M45.3280S +/- 0.1", J2000 V = 13.3 +/- 0.5 STAR DEC=-47D29'16.87" +/- 0.1" Reference Frame: ICRS Extended: NO Comments: V-magnitude comes from inspection of HLA WFPC2/F555W image. Aperture photometry on this image implies V=13.05 mag. HSC says m555=13.55 mag. Anywhere in this range will be fine for acquisition, regardless of spectral type (M to O), providing SNR>40 and well below saturation. Coordinates come from HLA image, but shifted to agree with position of acquisition star in HSC, 2MASS, and GSC, which all agree to within a few WFC3/UVIS pixels in the HLA image. In the native HLA image (WFC3/F275W or WFC3/F814W), the position would be 13 26 45.5506 -47 29 17.53. This can be used to see the ACQ placement in Aladin. ------------------------------------------------------------------------------------------------------------------------------------ 14759( 2) - 14-Jul-2016 16:35:23 - [ 5] Visit: 01 Visit Requirements: ORIENT 83.5D TO 83.5 D; ORIENT 263.5D TO 263.5 D On Hold Comments: Additional Comments: Brightest star in F275W within 40 arcsec radius of the slit center in the NUV images is at RA = 13:26:35.5395, Dec = -47:28:29.998. It has m275=13.9 vegamag. Although this star should not fall within the slit, if it did, it would be safe to observe in NUV/G230L. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5139-ACQ STIS/CCD ACQ F28X50LP MIRROR 1 0.3 S (0.3 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5139-PAI STIS/CCD ACCUM 52X0.5 MIRROR CR-SPLIT=NO, GAIN=4 1 2 S (2 S) POS TARG null, 0 R1 Comments: Image through the slit to help characterize position of sources relative to slit midline. ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, 0; PAR 4 R1 S) WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F275W FLASH=12 1 850 S (850 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, 0.2; PAR R1 S) 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F336W FLASH=12 1 630 S (630 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, -0.2; PAR R1 S) 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F438W FLASH=7 1 630 S (630 S S) ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, 0; PAR 10 R1 -MAMA S) WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F438W FLASH=4 1 1025 S S (1025 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, 0.2; PAR R1 -MAMA S) 12 WITH 11 ------------------------------------------------------------------------------------------------------------------------------------ 12 ANY WFC3/UVI ACCUM UVIS F275W FLASH=12 1 765 S (765 S S) ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, -0.2; PAR R1 -MAMA S) 14 WITH 13 14759( 2) - 14-Jul-2016 16:35:23 - [ 6] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 ANY WFC3/UVI ACCUM UVIS F336W FLASH=12 1 765 S (765 S S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC5139-ACQ 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC5139-PAIR1 2 STIS/CCD ACCUM 52X0.5 MIRROR none none none none 1 N/A NGC5139-PAIR1 3 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F275W none none none none 1 N/A S NGC5139-PAIR1 5 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F336W none none none none 1 N/A S NGC5139-PAIR1 7 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S NGC5139-PAIR1 9 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 10 WFC3/UVI ACCUM UVIS F438W none none none none 2 N/A S NGC5139-PAIR1 11 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 12 WFC3/UVI ACCUM UVIS F275W none none none none 2 N/A S NGC5139-PAIR1 13 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 14 WFC3/UVI ACCUM UVIS F336W none none none none 2 N/A S 14759( 2) - 14-Jul-2016 16:35:23 - [ 7] Visit: 02 Visit Requirements: ORIENT 2.8D TO 2.8 D; ORIENT 182.8D TO 182.8 D On Hold Comments: Additional Comments: Brightest star in F275W within 40 arcsec radius of the slit center in the NUV images is at RA = 13:26:50.4875, Dec = -47:30:15.640. It has m275=14.1 vegamag. Although this star should not fall within the slit, if it did, it would be safe to observe in NUV/G230L. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5139-ACQ STIS/CCD ACQ F28X50LP MIRROR 1 0.3 S (0.3 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5139-PAI STIS/CCD ACCUM 52X0.5 MIRROR CR-SPLIT=NO, GAIN=4 1 2 S (2 S) POS TARG null, 0 R2 Comments: Image through the slit to help characterize position of sources relative to slit midline. ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, 0; PAR 4 R2 S) WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F275W FLASH=12 1 850 S (850 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, 0.2; PAR R2 S) 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F336W FLASH=12 1 630 S (630 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, -0.2; PAR R2 S) 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F438W FLASH=7 1 630 S (630 S S) ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, 0; PAR 10 R2 -MAMA S) WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F438W FLASH=4 1 1025 S S (1025 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, 0.2; PAR R2 -MAMA S) 12 WITH 11 ------------------------------------------------------------------------------------------------------------------------------------ 12 ANY WFC3/UVI ACCUM UVIS F275W FLASH=12 1 765 S (765 S S) ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, -0.2; PAR R2 -MAMA S) 14 WITH 13 14759( 2) - 14-Jul-2016 16:35:23 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 ANY WFC3/UVI ACCUM UVIS F336W FLASH=12 1 765 S (765 S S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC5139-ACQ 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC5139-PAIR2 2 STIS/CCD ACCUM 52X0.5 MIRROR none none none none 1 N/A NGC5139-PAIR2 3 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F275W none none none none 1 N/A S NGC5139-PAIR2 5 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F336W none none none none 1 N/A S NGC5139-PAIR2 7 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S NGC5139-PAIR2 9 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 10 WFC3/UVI ACCUM UVIS F438W none none none none 2 N/A S NGC5139-PAIR2 11 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 12 WFC3/UVI ACCUM UVIS F275W none none none none 2 N/A S NGC5139-PAIR2 13 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 14 WFC3/UVI ACCUM UVIS F336W none none none none 2 N/A S 14759( 2) - 14-Jul-2016 16:35:23 - [ 9] Visit: 03 Visit Requirements: ORIENT 80.5D TO 80.5 D; ORIENT 260.5D TO 260.5 D On Hold Comments: Additional Comments: Brightest star in F275W within 40 arcsec radius of the slit center in the NUV images is at RA = 13:26:48.5958, Dec = -47:28:59.782. It has m275=14.8 vegamag. Although this star should not fall within the slit, if it did, it would be safe to observe in NUV/G230L. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5139-ACQ STIS/CCD ACQ F28X50LP MIRROR 1 0.3 S (0.3 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5139-PAI STIS/CCD ACCUM 52X0.5 MIRROR CR-SPLIT=NO, GAIN=4 1 2 S (2 S) POS TARG null, 0 R3 Comments: Image through the slit to help characterize position of sources relative to slit midline. ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, 0; PAR 4 R3 S) WITH 3 ------------------------------------------------------------------------------------------------------------------------------------ 4 ANY WFC3/UVI ACCUM UVIS F275W FLASH=12 1 850 S (850 S S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, 0.2; PAR R3 S) 6 WITH 5 ------------------------------------------------------------------------------------------------------------------------------------ 6 ANY WFC3/UVI ACCUM UVIS F336W FLASH=12 1 630 S (630 S S) ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC5139-PAI STIS/CCD ACCUM 52X0.5 G430L 4300 CR-SPLIT=NO 1 720 S (720 POS TARG null, -0.2; PAR R3 S) 8 WITH 7 ------------------------------------------------------------------------------------------------------------------------------------ 8 ANY WFC3/UVI ACCUM UVIS F438W FLASH=7 1 630 S (630 S S) ------------------------------------------------------------------------------------------------------------------------------------ 9 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, 0; PAR 10 R3 -MAMA S) WITH 9 ------------------------------------------------------------------------------------------------------------------------------------ 10 ANY WFC3/UVI ACCUM UVIS F438W FLASH=4 1 1025 S S (1025 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, 0.2; PAR R3 -MAMA S) 12 WITH 11 ------------------------------------------------------------------------------------------------------------------------------------ 12 ANY WFC3/UVI ACCUM UVIS F275W FLASH=12 1 765 S (765 S S) ------------------------------------------------------------------------------------------------------------------------------------ 13 NGC5139-PAI STIS/NUV ACCUM 52X0.5 G230L 2376 1 877 S (877 POS TARG null, -0.2; PAR R3 -MAMA S) 14 WITH 13 14759( 2) - 14-Jul-2016 16:35:23 - [ 10] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 ANY WFC3/UVI ACCUM UVIS F336W FLASH=12 1 765 S (765 S S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC5139-ACQ 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC5139-PAIR3 2 STIS/CCD ACCUM 52X0.5 MIRROR none none none none 1 N/A NGC5139-PAIR3 3 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 4 WFC3/UVI ACCUM UVIS F275W none none none none 1 N/A S NGC5139-PAIR3 5 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 6 WFC3/UVI ACCUM UVIS F336W none none none none 1 N/A S NGC5139-PAIR3 7 STIS/CCD ACCUM 52X0.5 G430L 4300 none none none none 1 N/A ANY 8 WFC3/UVI ACCUM UVIS F438W none none none none 1 N/A S NGC5139-PAIR3 9 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 10 WFC3/UVI ACCUM UVIS F438W none none none none 2 N/A S NGC5139-PAIR3 11 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 12 WFC3/UVI ACCUM UVIS F275W none none none none 2 N/A S NGC5139-PAIR3 13 STIS/NUV ACCUM 52X0.5 G230L 2376 none none none none 2 N/A -MAMA ANY 14 WFC3/UVI ACCUM UVIS F336W none none none none 2 N/A S 14759( 2) - 14-Jul-2016 16:35:23 - [ 11] Summary Form for Proposal 14759 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.5, F28X50LP, UVIS ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/NUV-MAMA, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters CR-SPLIT=NO, FLASH=12, FLASH=4, FLASH=7, GAIN=4 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 182.8D TO 182.8 D, ORIENT 2.8D TO 2.8 D, ORIENT 260.5D TO 260.5 D, ORIENT 263.5D TO 263.5 D, ORIENT 80.5D TO 80.5 D, ORIENT 83.5D TO 83.5 D, PAR 10 WITH 9, PAR 12 WITH 11, PAR 14 WITH 13, PAR 4 WITH 3, PAR 6 WITH 5, PAR 8 WITH 7, POS TARG null, -0.2, POS TARG null, 0, POS TARG null, 0.2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F275W, F336W, F438W, G230L, G430L, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names ANY, NGC5139-ACQ, NGC5139-PAIR1, NGC5139-PAIR2, NGC5139-PAIR3 ------------------------------------------------------------------------------------------------------------------------------------