13703( 6) - 09-Dec-2014 18:49:26 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13703 Version: 6 Check-in Time: 09-Dec-2014 18:49:26 STScI Edit Number: 0 Title The donor star winds in High-Mass X-ray Binaries ------------------------------------------------------------------------------------ Type Cycle GO 22 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dra. Lida Oskinova Universitat Potsdam Y CoI: Dr. Wolf-Rainer Hamann Universitat Potsdam N CoI: Dr. Helge Todt Universitat Potsdam N CoI: Dr. Felix Fuerst California Institute of Technology N CoI: Dr. Jose Miguel Torrejon Universidad de Alicante, Dpto de Fisica N CoI: Dr. Arash Bodaghee Georgia College and State University N CoI: Dr. Matthew Schurch University of Cape Town N ------------------------------------------------------------------------------------ Abstract High-mass X-ray binaries (HMXBs) are essential astrophysical laboratories. These objects represent an advanced stage in the evolution of massive binary systems, after the initially more massive star has already collapsed in a supernova explosion, but its remnant, a neutron star or black hole, remains gravitationally bound. The stellar wind from the OB-type donor is partially accreted onto its compact companion powering its relatively high X-ray luminosity. Since HMXBs accrete from the stellar wind, parameters such as the donor's mass-loss rate, the velocity of the wind, and its clumpiness are of fundamental importance. This proposal takes advantage of the unique capabilities of HST/STIS for UV spectroscopy. We focus on the most populous in the Galaxy class of those HMXBs where the stellar wind of the OB donor is directly accreted onto a neutron star. Recently, a new sub-class of HMXBs - "supergiant fast X-ray transients" - was discovered. It has been proposed that these enigmatic objects can be explained by the specific properties of their donor-star winds. The only way to validate or disprove this hypothesis is by a studying the wind diagnostics lines in the UV spectra of donor stars. The observations proposed here will, for the first time, provide the UV spectra of this important new type of accreting binaries. Our state-of-the art non-LTE expanding stellar atmospheres and 3-D stellar wind simulations allow thorough exploitation of the STIS spectra. As a result we will obtain the wind parameters for a representative sample of six Galactic HMXBs, thus heightening our knowledge thereof considerably. ------------------------------------------------------------------------------------ Observations Description ------------------------ An UV survey of a clean sample consisting of six wind-fed HMXBs, including persistent X-ray sources as well as supergiant fast X-ray transients. The program consists of a total of 9 HST orbits. The observations will be performed with the E140M echelle grating centered at 1425 A, and recorded by the FUV MAMA detector. 13703( 6) - 09-Dec-2014 18:49:26 - [ 2] For the UV-brightest targets we must choose the small 0.1 arcsec x 0.03 arcsec aperture in order to avoid the MAMA bright limit of the total count rate per image. ------------------------------------------------------------------------------------ 13703( 6) - 09-Dec-2014 18:49:26 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 HD-306414 STAR, B0-B2 III-I RA=11H21M46.8150S +/- 0.02", J2000 V = 10.16 +/- 0.04 DEC=-59D51'47.96" +/- 0.03" Reference Frame: ICRS Comments: SFXT Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.0014075217904246952 0.0047 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 BD+532790 STAR, GIANT O RA=22H07M56.2380S +/- 0.01", J2000 V = 9.90 +/- 0.03 DEC=+54D31'6.41" +/- 0.02" Reference Frame: ICRS Comments: HMXB Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -4.938775188956662E-4 -0.0031 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 3 BD+6073 STAR, B0-B2 III-I RA=00H37M9.6390S +/- 0.01", J2000 V = 9.68 +/- 0.02 DEC=+61D21'36.53" +/- 0.01" Reference Frame: ICRS Comments: SFXT Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -2.3089110100452638E-4 5.1E-4 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 4 V-V884-SCO STAR, SUPERGIANT O RA=17H03M56.7720S +/- 0.01", J2000 V = 6.53 +/- 0.01 DEC=-37D50'38.91" +/- 0.01" Reference Frame: ICRS Comments: HMXB Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 2.3638189638495113E-4 0.00471 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 5 HD-100199 STAR, B0-B2 III-I RA=11H31M6.9130S +/- 0.00", J2000 V = 8.17 +/- 0.01 DEC=-62D56'48.93" +/- 0.00" Reference Frame: ICRS Comments: HMXB Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -8.516270556389777E-4 2.3E-4 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 6 V-LM-VEL STAR, SUPERGIANT O RA=08H40M47.7919S +/- 0.00", J2000 V = 7.58 +/- 0.01 DEC=-45D03'30.21" +/- 0.00" Reference Frame: ICRS Comments: SFXT Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -6.80459146408658E-4 0.00566 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 13703( 6) - 09-Dec-2014 18:49:26 - [ 4] 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 HD-306414 STIS/CCD ACQ F25ND3 MIRROR 1 2 S (2 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-306414 STIS/FUV ACCUM 0.2X0.2 E140M 1425 3 2340 S -MAMA see below (9076 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-306414 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD-306414 2 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none 1 none 1 2640.0 S -MAMA HD-306414 2 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none 2 none 2 3218.0 S -MAMA HD-306414 2 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none 3 none 3 3218.0 S -MAMA 13703( 6) - 09-Dec-2014 18:49:26 - [ 5] Visit: 02 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 BD+532790 STIS/CCD ACQ F25ND3 MIRROR 1 3 S (3 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 BD+532790 STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 2575 S -MAMA (2575 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+532790 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A BD+532790 2 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 N/A -MAMA 13703( 6) - 09-Dec-2014 18:49:26 - [ 6] Visit: 03 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 BD+6073 STIS/CCD ACQ F25ND3 MIRROR 1 2 S (2 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 BD+6073 STIS/FUV ACCUM 0.2X0.2 E140M 1425 2 2664 S -MAMA (5906 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 | ------------------------------------------------------------------------------------------------------------------------------------ BD+6073 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A BD+6073 2 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none 1 none 1 N/A -MAMA BD+6073 2 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none 2 none 2 3242.0 S -MAMA 13703( 6) - 09-Dec-2014 18:49:26 - [ 7] Visit: 04 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 V-V884-SCO STIS/CCD ACQ F25ND3 MIRROR 1 0.5 S (0.5 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-V884-SCO STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 3 V-V884-SCO STIS/FUV ACCUM 31X0.05ND E140M 1425 1 2500 S -MAMA B see below (1993 S) Comments: An IUE spectrum of the source was used as an inut spectrum for the ETC calculations ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-V884-SCO 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-V884-SCO 2 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 1 N/A K DB V-V884-SCO 3 STIS/FUV ACCUM 31X0.05N E140M 1425 none none none none 1 1993.0 S -MAMA DB 13703( 6) - 09-Dec-2014 18:49:26 - [ 8] Visit: 05 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 HD-100199 STIS/CCD ACQ F25ND3 MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD-100199 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K A S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD-100199 STIS/FUV ACCUM 31X0.05ND E140M 1425 1 2500 S -MAMA A see below (2213 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD-100199 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD-100199 2 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 1 N/A K DA HD-100199 3 STIS/FUV ACCUM 31X0.05N E140M 1425 none none none none 1 2213.0 S -MAMA DA 13703( 6) - 09-Dec-2014 18:49:26 - [ 9] Visit: 06 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 V-LM-VEL STIS/CCD ACQ F25ND3 MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 V-LM-VEL STIS/FUV ACCUM 0.2X0.2 E140M 1425 1 2537 S -MAMA see below (2532 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 | ------------------------------------------------------------------------------------------------------------------------------------ V-LM-VEL 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A V-LM-VEL 2 STIS/FUV ACCUM 0.2X0.2 E140M 1425 none none none none 1 2532.0 S -MAMA 13703( 6) - 09-Dec-2014 18:49:26 - [ 10] Summary Form for Proposal 13703 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.2X0.2, 31X0.05NDA, 31X0.05NDB, F25ND3 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/FUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/PEAK ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements E140M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names BD+532790, BD+6073, HD-100199, HD-306414, V-LM-VEL, V-V884-SCO ------------------------------------------------------------------------------------------------------------------------------------