10148( 5) - 01/24/05 10:51 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 10148 Version: 5 Check-in Date: 24-Jan-2005 15:49:53 1.Proposal Title: The Masses of the Ultraluminous X-Ray Sources ------------------------------------------------------------------------------------ 2. Proposal For 3. Cycle 4. Parallel Pointing Tolerance GO 13 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: Prof. Joel N. Bregman University of Michigan CoI: Mr. Jifeng Liu University of Michigan N CoI: Dr. Jimmy A. Irwin University of Michigan N ------------------------------------------------------------------------------------ 6. Abstract Ultraluminous X-ray sources are non-nuclear sources in normal disk galaxies that are second only to AGNs in point-source luminosity. These enigmatic objects are either stellar mass black holes that are super-Eddington emitters, or sub-Eddington emission from 1E3-1E4 Msolar black holes. We can distinguish between these models by a direct determination of the mass of the primary, which requires knowing the spectral type of the secondary, its period, and its orbital velocity around the black hole. We propose to obtain UV spectra to determine the spectral type of two ULX secondaries (optical counterparts), to infer the masses and radii of the secondaries and their suitability for radial velocity studies. For another ULX secondary, we already obtained a UV spectrum showing it to be a B0I star, so we propose three additional observations, which will yield the characteristic orbital velocity, help constrain the period, and reveal if the primary is a 1E3-1E4 Msolar black hole, which would produce velocities > 1000 km/sec. ------------------------------------------------------------------------------------ 10148( 5) - 01/24/05 10:51 - [ 2] Observations Description ------------------------ All observations use the G140L/FUV MAMA and either the 52x0.2 slit or the 52x0.5 slit. Single spectra will be obtained for the ULX targets in M81 (3 orbits) and NGC 1313 (2 orbits). For the ULX in NGC 5204, we will obtain three separate spectra, each of duration 2 orbits. As we are looking for orbital changes to the radial velocities, we request that the three spectra be obtained at intervals of about 3 days (i.e., three spectra over a 6 day time frame), the exact amount being at the convenience of the schedulers. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ 10148( 5) - 01/24/05 10:51 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5204-ULX EXT-STAR, LMXB RA=13H29M38.5500S +/- 0.1", J2000 V = 22.0+/-0.1 DEC=+58D25'5.60" +/- 0.1", PLATE-ID=01R2 Coordinate Source: HST_IMAGE 2 M81-ULX EXT-STAR, LMXB RA=09H55M33.3000S +/- 0.1", J2000 V = 23.8+/-0.1 DEC=+69D00'34.80" +/- 0.1", PLATE-ID=00M9 Coordinate Source: HST_IMAGE 3 NGC1313-ULX EXT-STAR, LMXB RA=03H18M22.0000S +/- 0.1", J2000 V = 21.6+/-0.2 DEC=-66D36'4.00" +/- 0.1" R=21.6 Coordinate Source: HIPPARCOS/TYCHO_CATALOGUE Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 1991.25 0.0 0.0 0.0 10148( 5) - 01/24/05 10:51 - [ 4] Visit: 01 Visit Priority: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1313-ULX STIS/CCD ACQ F28X50LP MIRROR 1 180 S ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC1313-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 1896 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC1313-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 3162 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1313-ULX 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC1313-ULX 2 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 1 N/A -MAMA NGC1313-ULX 3 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 2 N/A -MAMA 10148( 5) - 01/24/05 10:51 - [ 5] Visit: 02 Visit Priority: 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 M81-ULX STIS/CCD ACQ 50CCD MIRROR 1 200 S ------------------------------------------------------------------------------------------------------------------------------------ 2 M81-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 1496 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 3 M81-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 3162 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 4 M81-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 3120 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ M81-ULX 1 STIS/CCD ACQ 50CCD MIRROR none none none none 1 N/A M81-ULX 2 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 1 N/A -MAMA M81-ULX 3 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 2 N/A -MAMA M81-ULX 4 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 3 N/A -MAMA 10148( 5) - 01/24/05 10:51 - [ 6] Visit: 03 Visit Priority: Visit Requirements: On Hold Comments: Additional Comments: This is the first of three visits for NGC 5204 that should be completed over a 4-6 day time frame, with the approximately even spacing between the three observations. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5204-ULX STIS/CCD ACQ F28X50LP MIRROR 1 150 S ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5204-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 1919 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5204-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 3065 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC5204-ULX 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC5204-ULX 2 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 1 N/A -MAMA NGC5204-ULX 3 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 2 N/A -MAMA 10148( 5) - 01/24/05 10:51 - [ 7] Visit: 04 Visit Priority: Visit Requirements: AFTER 03 BY 2 D TO 4 D On Hold Comments: Additional Comments: This observation should be scheduled approximately 3 days (2-4 days) after the first observation of this target. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5204-ULX STIS/CCD ACQ F28X50LP MIRROR 1 150 S ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5204-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 1919 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5204-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 3065 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC5204-ULX 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC5204-ULX 2 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 1 N/A -MAMA NGC5204-ULX 3 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 2 N/A -MAMA 10148( 5) - 01/24/05 10:51 - [ 8] Visit: 05 Visit Priority: Visit Requirements: AFTER 04 BY 2 D TO 4 D On Hold Comments: Additional Comments: This observation should be scheduled approximately 3 days (2-4 days) after the second observation of this target. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC5204-ULX STIS/CCD ACQ F28X50LP MIRROR 1 150 S ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC5204-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 1919 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC5204-ULX STIS/FUV ACCUM 52X0.5 G140L 1425 1 3065 S -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC5204-ULX 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A NGC5204-ULX 2 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 1 N/A -MAMA NGC5204-ULX 3 STIS/FUV ACCUM 52X0.5 G140L 1425 none none none none 2 N/A -MAMA 10148( 5) - 01/24/05 10:51 - [ 9] Visit: 11 Visit Priority: Visit Requirements: ORIENT 45.0D TO 110.0 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| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC1313-ULX ACS/HRC ACCUM HRC PR200L 1 2616 S ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC1313-ULX ACS/HRC ACCUM HRC PR200L 1 2740 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 | ------------------------------------------------------------------------------------------------------------------------------------ NGC1313-ULX 1 ACS/HRC ACCUM HRC PR200L none none none 1 1 N/A NGC1313-ULX 1 ACS/HRC ACCUM HRC PR200L none none none 2 1 N/A NGC1313-ULX 2 ACS/HRC ACCUM HRC PR200L none none none 1 2 N/A NGC1313-ULX 2 ACS/HRC ACCUM HRC PR200L none none none 2 2 N/A 10148( 5) - 01/24/05 10:51 - [ 10] Summary Form for Proposal 10148 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures F28X50LP 52X0.5 50CCD HRC ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD STIS/FUV-MAMA ACS/HRC ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category GO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 03 BY 2 D TO 4 D AFTER 04 BY 2 D TO 4 D ORIENT 45.0D TO 110.0 D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR G140L PR200L ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC1313-ULX M81-ULX NGC5204-ULX ------------------------------------------------------------------------------------------------------------------------------------ Wavelengths 1425 ------------------------------------------------------------------------------------------------------------------------------------