SIMBAD references

2005ApJ...620..723W - Astrophys. J., 620, 723-730 (2005/February-3)

Discovery of an X-ray nova in M31.

WILLIAMS B.F., GARCIA M.R., KONG A.K.H., PRIMINI F.A. and MURRAY S.S.

Abstract (from CDS):

We have obtained snapshot images of an X-ray nova in M31 from Chandra ACIS-I and the Hubble Space Telescope (HST) Advanced Camera for Surveys. The Chandra position of the X-ray nova was R.A.=00h44m06{fs}68±1{fs}74, decl.=+41°12'20".0±2".31 (J2000.0). A follow-up HST observation 24 days later revealed a source at R.A.=00h44m06{fs}81, decl.=+41°12'24".0 that was B=25.75±0.05. This optical source faded to B=27.1±0.1 in 3 months. During this time period, the X-ray flux decayed linearly from (3.6±0.2)x10–4 to <(6.9±0.09)x10–5 counts/cm2/s. The HST identification of an optical source in the same region experiencing an obvious drop in brightness in concert with the X-ray nova suggests that this optical source is the counterpart of the X-ray nova. However, the precision of the X-ray position allows the possibility that the optical source is a nearby variable star. We discuss the implications of both possibilities.

Abstract Copyright:

Journal keyword(s): Accretion, Accretion Disks - Galaxies: Individual: Messier Number: M31 - X-Rays: Binaries

Nomenclature: Text: [KGP2002] s1-NN (No. s1-86) added.

Simbad objects: 12

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2020.10.24-02:49:51

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