2001/07/18 by T. Augusteijn, E. Kuulkers, M. H. van Kerkwijk
Physics and Astronomy · #Accretion disc #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Binary number #Binary star #Error analysis #Neutron star #Photometry (optics) #Relativity and Gravitational Theory #Variable star #X-ray binary #astro-ph
paper · pdf · doi:10.1051/0004-6361:20010855
published as Astron.Astrophys.375:447,2001 · 7 pages, 3 figures, A&A, in press
arxiv created 2001/07/18 · openalex publication_date 2001/08/01 · arxiv updated 2011/03/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present K band photometry of the region including the radio error box of the soft X-ray transient 4U 1630-47 during its 1998 outburst. We detect a variable source at mag located inside the radio error circle which we identify as the counterpart to the X-ray source. We discuss the properties of the source, and conclude that it is most likely a black-hole X-ray binary similar to 4U 1543-47, GRO J1655-40 or SAX J1819.3-2525, containing a relatively early-type secondary.