NOAO >   Observing Info >   Approved Programs >   2018A-0121

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Program Information for 2018A-0121


PI: John A Tomsick, UC Berkeley, jtomsick@ssl.berkeley.edu
Address: Space Sciences Laboratory, University of California, Berkeley, 7 Gauss Way, Berkeley, CA, 94720-7450 USA

CoI: George Iansbury, Institute of Astronomy
CoI: Farid Rahoui, ESO
CoI: Maica Clavel, UC Berkeley
CoI: Jae Sub Hong, Harvard-Smithsonian Center for Astrophysics
CoI: Francesca Fornasini, Harvard-Smithsonian Center for Astrophysics
CoI: Kaya Mori, Columbia U.
CoI: Daniel Stern, CalTech-JPL
CoI: James Aird, Herzberg Institute of Astrophysics
CoI: David Alexander, Durham University
CoI: Fiona Harrison, Space Radiation Laboratory (Caltech)

Title: Constraing the Milky Way's Faint HMXBs Population

Abstract: High mass X-ray binaries evolve into black hole-black hole and black hole-neutron star binaries, becoming important sources of gravitational waves; the paucity of known Galactic HMXBs hosting a BH should therefore be a cause of concern for future projects such as eLISA. However, recent studies suggest that this lack of BH-HMXBs may be an observational bias, with most sources being X-ray faint and appearing similar to isolated massive stars. This possible scenario can be addressed via deep hard and soft X-ray surveys combined to near-infrared observations to detect more of them. Here we propose Flamingos-2 photometry of seven BH-HMXB candidates we serendipitously discovered during NuSTAR observations. These observations were granted in the framework of a Chandra/NOAO proposal whose goal is to obtain the accurate soft X-ray positions of the NuSTAR sources. The Flamingos-2 images will then be used to pinpoint their near-infrared counterparts and later proceed with near-infrared spectroscopy for identification.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2018A):  GEM-SQ/Flamingos2 -- 2.3hrs band 2 (GS-2018A-Q-204 )


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NOAO >   Observing Info >   Approved Programs >   2018A-0121

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