The X-ray Transient XTE J2012+381

Details The X-ray Transient XTE J2012+381 The X-ray Transient XTE J2012+381

1999-03-18

arxiv.org/abs/astro-ph/9903282v1

Mon.Not.Roy.Astron.Soc. 305 (1999) L49

Astronomy and Astrophysics

Astrophysics

5 pages, 7 postscript figures included, uses mn.sty. Accepted for publication in MNRAS

Scientific paper

10.1046/j.1365-8711.1999.02653.x

We present optical and infrared observations of the soft X-ray transient (SXT) XTE J2012+381 and identify the optical counterpart with a faint red star heavily blended with a brighter foreground star. The fainter star is coincident with the radio counterpart and appears to show weak H alpha emission and to have faded between observations. The RXTE/ASM lightcurve of XTE J2012+381 is unusual for an SXT in that after an extended linear decay, it settled into a plateau state for about 40 days before undergoing a weak mini-outburst. We discuss the nature of the object and suggest similarities to long orbital period SXTs.

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