Optical identification of the LMC supersoft source RXJ0527.8-6954 from MACHO Project photometry
arXiv:astro-ph/9707225 · doi:10.1093/mnras/291.1.L13
Abstract
We identify the likely optical counterpart to the LMC supersoft X-ray source RXJ0527.8-6954, and hence recover HV2554. This identification is based on an analysis of approximately 4 years of optical photometry obtained serendipitously via the MACHO project. We see a steady fading of the star of about 0.5 mag over the duration of the observations. Evidence is also presented for an orbital modulation of 0.05 mag semi-amplitude on a period of P=0.39262 +/- 00015 d. Our optical observations are consistent with the suggestion that the X-ray decline in this system is caused by cooling after a weak shell flash.
4 pages Latex, 4 figures, to appear in MNRAS
Cited by in corpus (4)
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- Optical identification of the transient supersoft X-ray source RX J0527.8-6954, in the LMC
- Multiwavelength modeling the SED of Luminous Supersoft X-ray Sources in Large Magellanic Cloud and Small Magellanic Cloud