X-Ray Nova in Vulpecula
Abstract
S. Okamura and T. Noguchi, Tokyo Astronomical Observatory, Kiso Station, telex that they have found two possible candidates for this object within the error box reported by the Ginga Team (IAUC 4588) by examination of the Palomar Sky Survey charts and several plates taken with the Kiso Schmidt telescope. Candidate A (R.A. = 20h01m01s.53 +/- 0s.04, Decl. = +25D08'57".8 +/- 0".7, equinox 1950.0) is a red variable object (B-R = +4 from the Palomar charts) with B = 18.5 on the Palomar chart, [19.5 in 1983 and 17.5 on 1988 Apr. 28. Candidate B (R.A. = 20h00m42s.86 +/- 0s.04, Decl. +25d05'43".5 +/- 0".7, equinox 1950.0) is totally invisible on both Palomar charts and on Kiso plates taken in 1978 and 1983, but it does appear at B = 17.5 on the 1988 Apr. 28 plate and also on a red plate taken on Apr. 30.
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- May 1988
- Bibcode:
- 1988IAUC.4589....1O