14742( 2) - 18-Jul-2016 19:43:13 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14742 Version: 2 Check-in Time: 18-Jul-2016 19:43:13 STScI Edit Number: 0 Title Improving Central Black Hole Mass Measurements in Low Mass Early Type Galaxies ------------------------------------------------------------------------------------ Type Cycle GO 24 ------------------------------------------------------------------------------------ Investigators Contact? PI: Mr. Dieu D. Nguyen University of Utah Y CoI: Dr. Nadine Neumayer Max-Planck-Institut fur Astronomie, N Heidelberg CoI: Prof. Anil C. Seth University of Utah N CoI: Dr. Nikolay Kacharov Max-Planck-Institut fur Astronomie, N Heidelberg CoI: Dr. Mark den Brok Eidgenossiche Technische Hochschule (ETH) N CoI: Renuka Pechetti University of Utah N ------------------------------------------------------------------------------------ Abstract Measurements of black hole masses in massive early type galaxies have revealed that they tightly correlate with the properties of their host galaxies. At lower galaxy masses, almost no black hole mass measurements exist in early type galaxies, while existing measurements in later type galaxies show significant scatter. By finding and measuring the mass of black holes in low mass early type galaxies we can (1) constrain the fraction of low mass galaxies with black holes, an important measurement for understanding the formation of the first seed black holes, and (2) anchor the black hole mass scaling relations and quantify the scatter in these relations. We propose to make a robust dynamical estimation of the central black hole masses in three nearby, low mass early type galaxies. We request HST/STIS spectroscopy to constrain the variation in the stellar populations and mass-to-light ratio at high spatial resolution. We will combine this information with new and archival HST imaging to create accurate stellar mass maps of each galaxy. These will be combined with existing stellar kinematic maps from adaptive optics Gemini/NIFS and VLT/SINFONI data. The resulting analysis will enable us to dynamically measure black hole masses below the mass of any known central black holes. ------------------------------------------------------------------------------------ Observations Description ------------------------ 1/ Purpose: ---------------------- Our observation includes of STIS spectroscopy of all three galaxies NGC 205 (2 orbits), NGC 5102 (4 orbits), and NGC 5206 (5 orbits) and WFC3 imaging (1 orbit) only for NGC 5102 to measure the spatial mass-to-light ratio variations within the NGC 205, NGC 5102, and NGC 5206 nuclei and enable a more robust masses determination of their black holes. We require that the total time for the imaging and spectroscopy will be observed within ~19 hours. 14742( 2) - 18-Jul-2016 19:43:13 - [ 2] 2/ Coordinates of the nucleus: ---------------------- For all images we have checked both the NED coordinates and those from 2MASS or the 2MASS large galaxy atlas. Some discrepancies exist at the <1" level for the centers of these galaxies, but given the size of the acquisition image (~5") we don't anticipate this lack of precision will cause any problems. 3/ STIS Spectroscopy: ------------------ We propose to obtain high spatial resolution observations of the stellar populations by obtaining STIS observations with the G430L gratings and the 52"x0.1" slit. we have chosen the 50CCD aperture to reduce CTE and used exposure times ~1000 sec to ensure good cosmic ray rejections. In total, we will obtain 5, 11, and 14 science exposures without any splits over 2, 4, and 5 orbits for NGC 205 (Visit 2), NGC 5102 (Visit 3), and NGC 5206 (iVisit 4), respectively. 3.1/ ACQ details: We have used existing HST WFPC2 & ACS/RHRC data of these galaxies on HLA to estimate the ACQ exposure times; specifically, F555W band for NGC 205 and NGC 5206, and the F547M band for NGC 5102. We calculate the magnitude in a 5x5 box to estimate the S/N in the STIS ETC, and to calculate saturation assuming this magnitude as a point source with a K0V Kurucz spectrum. For NGC205, NGC5206 & NGC5102 we get a ~V magnitude of 16.8, 17.1 & 14.7 respectively. This leads to minimum exposure times of 1s, 2s & 0.2s for each source, and saturation limits of 202s, 266s, and 29s. We choose 10s exposures for both ACQ and ACQ/PEAK exposures for NGC205 (increasing the ACQ/PEAK exposure time resulted in overfilling the first orbit), 10s ACQ exposures and 20s ACQ-PEAK in NGC5206, and 3s for ACQ and 6s for ACQ/PEAK in NGC5102. These exposure times should give us plenty of S/N and be <20% saturation in all cases. 3.2/ Exposure Times: Given the orbits available, we have tried to pack the visits with maximal efficiency. We find that packing three ~930s exposures per orbit, with the first orbit having the two acquisition exposures + 2 science exposures provides the maximal efficiency. In total we have 5 science frames in NGC205, 11 frames in NGC5102 and 14 science frames in NGC5206. These are designed to provide sufficient S/N out to radii of ~0.8". 3.3/ Dithers & CR-SPLIT: For NGC205 and NGC5102, no CR-SPLITs are used and integer pixel dithers are requested to ease combination of exposures without using multidrizzle. Larger dithers are used in NGC205 (since there are just 5 separate exposures). For NGC5206, we CR-SPLIT our exposures to get 7x2 science frames, each at a separate dither. This strategy is identical to our successful NGC404 STIS 14742( 2) - 18-Jul-2016 19:43:13 - [ 3] observations, but with larger dithers to ensure better subtraction using a median frame to mitigate detector artifcats.. 3.4/ Orientation: The position angles (E of N) desired for our observations are described below and are selected to roughly correspond to the major axis of the nuclear star clusters. We have added 45 degrees to these to determined the requested ORIENTs and included the 180 degree rotation of these to maximize schedulability, we note that NGC205 has minimal schedulability even with a relatively wide range of ORIENTs. NGC205 PA=135+-20 NGC 5102 PA=50+-10 NGC5206 PA=40+-20 4/ WFC3 Imaging for NGC 5102 ------------------------- For NGC5102, good archival imaging data is not available, so we requested 1 orbit of additional imaging. This will be used to measure the spatial stellar M/L ratio variability beyond the boundaries of the slit. We will obtain images in three filters (F336W, F547M, F814W), and four dithered exposures in each filter to ensure the highest possible spatial resolution for our observations. To manage so many exposures, we use the C512C subarray, which will give us information within the central 20" of the galaxy, sufficient for our mass-modeling purposes. The exposure times were simulated via ETC to make sure the S/N are still high enough (~10) out to the edge of the subarray field of (r ~ 10") and to ensure obtained images unsaturated. We used a variety of existing HST data and our adaptive optics data to estimate the colors in each band, and our requirements are met using 4x297s exposures in F336W, 4x120s exposures in F547M, 4x105s exposures in F814W. ------------------------------------------------------------------------------------ 14742( 2) - 18-Jul-2016 19:43:13 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC205 GALAXY, DWARF COMPACT, RA=00H40M22.0750S +/- 0.7", J2000 V = -241 V = 8.07 DWARF ELLIPTICAL, DEC=+41D41'7.08" +/- 0.7" ELLIPTICAL, NUCLEUS Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5102 GALAXY, DWARF COMPACT, RA=13H21M57.6120S +/- 0.3", J2000 V = 468 V = 9.65 DWARF ELLIPTICAL, DEC=-36D37'48.52" +/- 0.3" ELLIPTICAL, NUCLEUS Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5206 GALAXY, DWARF COMPACT, RA=13H33M43.9710S +/- 0.1", J2000 V = 571 V = 9.05 DWARF ELLIPTICAL, DEC=-48D09'4.11" +/- 0.1" ELLIPTICAL, NUCLEUS Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 14742( 2) - 18-Jul-2016 19:43:13 - [ 5] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.173 Line_Spacing 0.112 Coordinate_Frame POS-TARG Pattern_Orient 23.884 Angle_Between_Sides 81.785 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type STIS-ALONG-SLIT Pattern_Purpose DITHER Number_Of_Points 5 Point_Spacing 1.523 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 90.0 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 3 Primary_Pattern Secondary_Pattern Pattern_Type STIS-ALONG-SLIT Pattern_Purpose DITHER Number_Of_Points 11 Point_Spacing 0.711 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 90.0 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 4 Primary_Pattern Secondary_Pattern Pattern_Type STIS-ALONG-SLIT Pattern_Purpose DITHER Number_Of_Points 7 Point_Spacing 1.016 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 90.0 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 14742( 2) - 18-Jul-2016 19:43:13 - [ 6] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: 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 NGC5102 WFC3/UVI ACCUM UVIS2-C51 F336W CR-SPLIT=NO, FLASH=12 1 297 S PATTERN 1 1 S 2C-SUB see below (1232 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5102 WFC3/UVI ACCUM UVIS2-C51 F547M CR-SPLIT=NO, FLASH=12 1 120 S PATTERN 1 2 S 2C-SUB see below (524 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5102 WFC3/UVI ACCUM UVIS2-C51 F814W CR-SPLIT=NO, FLASH=12 1 105 S PATTERN 1 3 S 2C-SUB see below (464 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC5102 1 WFC3/UVI ACCUM UVIS2-C5 F336W 1 none none none 1 308.0 S S 12C-SUB NGC5102 1 WFC3/UVI ACCUM UVIS2-C5 F336W 2 none none none 1 308.0 S S 12C-SUB NGC5102 1 WFC3/UVI ACCUM UVIS2-C5 F336W 3 none none none 1 308.0 S S 12C-SUB NGC5102 1 WFC3/UVI ACCUM UVIS2-C5 F336W 4 none none none 1 308.0 S S 12C-SUB NGC5102 2 WFC3/UVI ACCUM UVIS2-C5 F547M 1 none none none 1 131.0 S S 12C-SUB NGC5102 2 WFC3/UVI ACCUM UVIS2-C5 F547M 2 none none none 1 131.0 S S 12C-SUB NGC5102 2 WFC3/UVI ACCUM UVIS2-C5 F547M 3 none none none 1 131.0 S S 12C-SUB NGC5102 2 WFC3/UVI ACCUM UVIS2-C5 F547M 4 none none none 1 131.0 S S 12C-SUB NGC5102 3 WFC3/UVI ACCUM UVIS2-C5 F814W 1 none none none 1 116.0 S S 12C-SUB NGC5102 3 WFC3/UVI ACCUM UVIS2-C5 F814W 2 none none none 1 116.0 S S 12C-SUB NGC5102 3 WFC3/UVI ACCUM UVIS2-C5 F814W 3 none none none 1 116.0 S S 12C-SUB NGC5102 3 WFC3/UVI ACCUM UVIS2-C5 F814W 4 none none none 1 116.0 S S 12C-SUB 14742( 2) - 18-Jul-2016 19:43:13 - [ 7] Visit: 02 Visit Requirements: ORIENT 340D TO 20 D; ORIENT 160D TO 200 D On Hold Comments: Additional Comments: 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 NGC205 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=5, 1 10 S (10 DIFFUSE-CENTER=FLUX-CENTROID S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC205 STIS/CCD ACQ/PEA 52X0.05E1 G430L 4300 1 10 S (10 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC205 STIS/CCD ACCUM 52X0.1E1 G430L 4300 CR-SPLIT=NO, GAIN=1 1 946 S PATTERN 2 3 (4730 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC205 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC205 2 STIS/CCD ACQ/PEA 52X0.05E G430L 4300 none none none none 1 N/A K 1 NGC205 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 1 none none none 1 N/A NGC205 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 2 none none none 1 N/A NGC205 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 3 none none none 2 N/A NGC205 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 4 none none none 2 N/A NGC205 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 5 none none none 2 N/A 14742( 2) - 18-Jul-2016 19:43:13 - [ 8] Visit: 03 Visit Requirements: ORIENT 85D TO 105 D; ORIENT 265D TO 285 D On Hold Comments: Additional Comments: 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 NGC5102 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=5, 1 3 S (3 S) DIFFUSE-CENTER=FLUX-CENTROID ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5102 STIS/CCD ACQ/PEA 52X0.05E1 G430L 4300 1 6 S (6 S) K ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5102 STIS/CCD ACCUM 52X0.1E1 G430L 4300 CR-SPLIT=NO, GAIN=1 1 933 S PATTERN 3 3 (10263 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC5102 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC5102 2 STIS/CCD ACQ/PEA 52X0.05E G430L 4300 none none none none 1 N/A K 1 NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 1 none none none 1 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 2 none none none 1 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 3 none none none 2 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 4 none none none 2 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 5 none none none 2 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 6 none none none 3 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 7 none none none 3 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 8 none none none 3 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 9 none none none 4 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 10 none none none 4 N/A NGC5102 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 11 none none none 4 N/A 14742( 2) - 18-Jul-2016 19:43:13 - [ 9] Visit: 04 Visit Requirements: ORIENT 65D TO 105 D; ORIENT 245D TO 285 D On Hold Comments: Additional Comments: 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 NGC5206 STIS/CCD ACQ F28X50LP MIRROR ACQTYPE=DIFFUSE, CHECKBOX=5, 1 10 S (10 DIFFUSE-CENTER=FLUX-CENTROID S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5206 STIS/CCD ACQ/PEA 52X0.1E1 G430L 4300 1 20 S (20 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5206 STIS/CCD ACCUM 52X0.1E1 G430L 4300 CR-SPLIT=2, GAIN=1 1 1924 S PATTERN 4 3 (13468 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC5206 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC5206 2 STIS/CCD ACQ/PEA 52X0.1E1 G430L 4300 none none none none 1 N/A K NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 1 none none 1 1 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 1 none none 2 1 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 2 none none 1 2 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 2 none none 2 2 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 3 none none 1 2 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 3 none none 2 3 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 4 none none 1 3 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 4 none none 2 3 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 5 none none 1 4 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 5 none none 2 4 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 6 none none 1 4 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 6 none none 2 5 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 7 none none 1 5 N/A NGC5206 3 STIS/CCD ACCUM 52X0.1E1 G430L 4300 7 none none 2 5 N/A 14742( 2) - 18-Jul-2016 19:43:13 - [ 10] Summary Form for Proposal 14742 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.05E1, 52X0.1E1, F28X50LP, UVIS2-C512C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/PEAK ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ACQTYPE=DIFFUSE, CHECKBOX=5, CR-SPLIT=2, CR-SPLIT=NO, DIFFUSE-CENTER=FLUX-CENTROID, FLASH=12, GAIN=1 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 160D TO 200 D, ORIENT 245D TO 285 D, ORIENT 265D TO 285 D, ORIENT 340D TO 20 D, ORIENT 65D TO 105 D, ORIENT 85D TO 105 D, PATTERN 1 1, PATTERN 1 2, PATTERN 1 3, PATTERN 2 3, PATTERN 3 3, PATTERN 4 3 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W, F547M, F814W, G430L, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC205, NGC5102, NGC5206 ------------------------------------------------------------------------------------------------------------------------------------