SIMBAD references

2002MNRAS.335L..67G - Mon. Not. R. Astron. Soc., 335, L67-L70 (2002/September-3)

The optical counterpart of the ultraluminous X-ray source NGC 5204 X-1.


Abstract (from CDS):

We use archival HST/WFPC2 V - and I -band images to show that the optical counterpart to the ultraluminous X-ray source NGC 5204 X-1, reported by Roberts et al., is composed of two sources separated by 0.5 arcsec. We have also identified a third source as a possible counterpart, which lies 0.8 arcsec from the nominal X-ray position. Point spread function fitting photometry yields V -band magnitudes of 20.3, 22.0 and 22.4 for the three sources. The V - I band colours are 0.6, 0.1 and -0.2, respectively (i.e. the fainter sources are bluer). We find that all V - I colours and luminosities are consistent with those expected for young stellar clusters (age <10 Myr).

Abstract Copyright: RAS

Journal keyword(s): accretion, accretion discs - black hole physics - galaxies: photometry - galaxies: star clusters - X-rays: binaries - X-rays: individual: NGC 5204 X-1

Nomenclature: Fig.1, Table 1: [GRK2002] HST N (Nos 1-3).

Simbad objects: 5

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