1995/06/13 by Michel Boer, Boer, Michel, Jochen Greiner +5
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #High-pressure geophysics and materials #SAS software applications and methods #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9506080
8 pages and 5 figures in compressed postscript format. Accepted for publication in Astronomy and Astrophysics
arxiv created 1995/06/13 · openalex publication_date 1995/06/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report on deep photometry and spectroscopy of the objects detected in the ROSAT HRI X-ray error box of the hard X-ray transient, GRS 1915+105. The probable counterpart of this source has been detected, with a magnitude of 23.4 in the I band. The optical absorption \rm A\rm V = 28 derived from the X-ray data implies an absolute magnitude in the I band, \rm M\rm I ≈ -6.7. We present the data for all the objects present in the error box, together with the spectra of the three brightest. Possible spectral types, as well as estimates of the hydrogen column density are derived.