The IR counterpart of the black-hole candidate 4U 1630-47

Details The IR counterpart of the black-hole candidate 4U 1630-47 The IR counterpart of the black-hole candidate 4U 1630-47

2001-07-18

arxiv.org/abs/astro-ph/0107337v1

Astron.Astrophys.375:447,2001

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures, A&A, in press

Scientific paper

10.1051/0004-6361:20010855

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 K=16.1 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.

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