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Optical identification of the LMC supersoft source RX J0527.8-6954 from MACHO project photometry
We identify the likely optical counterpart to the Large Magellanic Cloud (LMC) supersoft X-ray source RX J0527.8–6954, and hence recover HV 2554. This identification is based on an analysis of ~ 4 yr of optical photometry obtained serendipitously via the MACHO project. We see a steady fading of the...
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| Published in: | Monthly notices of the Royal Astronomical Society 1997-10, Vol.291 (1), p.L13-L16 |
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| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| container_end_page | L16 |
| container_issue | 1 |
| container_start_page | L13 |
| container_title | Monthly notices of the Royal Astronomical Society |
| container_volume | 291 |
| creator | Alcock, C. Allsman, R. A. Alves, D. R. Axelrod, T. S. Bennett, D. P. Charles, P. A. Cook, K. H. Freeman, K. C. Griest, K. Lehner, M. J. Livio, M. Marshall, S. L. Minniti, D. Peterson, B. A. Pratt, M. R. Quinn, P. J. Rodgers, A. W. Southwell, K. A. Stubbs, C. W. Sutherland, W. |
| description | We identify the likely optical counterpart to the Large Magellanic Cloud (LMC) supersoft X-ray source RX J0527.8–6954, and hence recover HV 2554. This identification is based on an analysis of ~ 4 yr of optical photometry obtained serendipitously via the MACHO project. We see a steady fading of the star of ~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 ± 0.00015 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. |
| doi_str_mv | 10.1093/mnras/291.1.L13 |
| format | article |
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A. ; Alves, D. R. ; Axelrod, T. S. ; Bennett, D. P. ; Charles, P. A. ; Cook, K. H. ; Freeman, K. C. ; Griest, K. ; Lehner, M. J. ; Livio, M. ; Marshall, S. L. ; Minniti, D. ; Peterson, B. A. ; Pratt, M. R. ; Quinn, P. J. ; Rodgers, A. W. ; Southwell, K. A. ; Stubbs, C. W. ; Sutherland, W.</creator><creatorcontrib>Alcock, C. ; Allsman, R. A. ; Alves, D. R. ; Axelrod, T. S. ; Bennett, D. P. ; Charles, P. A. ; Cook, K. H. ; Freeman, K. C. ; Griest, K. ; Lehner, M. J. ; Livio, M. ; Marshall, S. L. ; Minniti, D. ; Peterson, B. A. ; Pratt, M. R. ; Quinn, P. J. ; Rodgers, A. W. ; Southwell, K. A. ; Stubbs, C. W. ; Sutherland, W.</creatorcontrib><description>We identify the likely optical counterpart to the Large Magellanic Cloud (LMC) supersoft X-ray source RX J0527.8–6954, and hence recover HV 2554. This identification is based on an analysis of ~ 4 yr of optical photometry obtained serendipitously via the MACHO project. We see a steady fading of the star of ~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 ± 0.00015 d. 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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.</description><subject>accretion</subject><subject>accretion discs</subject><subject>binaries: close</subject><subject>binaries: spectroscopic</subject><subject>stars: individual: RX J0527.8-6954</subject><subject>X-rays: stars</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNo9kM9LwzAUx4MoOKdnrzl565bkpT9ynEM3y2QgKsNL7NKEdbZNTVJw_73Viaf35fH5Ph4fhK4pmVAiYNq0rvBTJuiETlYUTtCIQhJHTCTJKRoRAnGUpZSeowvv94QQDiwZofd1FypV1LgqdRsqM-RQ2RZbg8NO49XjHPu-085bE7C3vVMaP21wTmKWTrIoETHHxtkGP87myzXunN1rFXC3s8E2OrjDJTozRe311d8co5f7u-f5MlqtFw_z2SpSwEWIeFmKTJutFpyqkiRgSsK2mRCgCjJsuEo1V1yxMiOpYJyUQnMDMYCKEwYFjNHN8e7wwmevfZBN5ZWu66LVtveSpUBi4HwAp0dQOeu900Z2rmoKd5CUyB-T8tekHExKKgeTQyM6Niof9Nc_XrgPmaSQxnK5eZO3YiPyRZ7LV_gGRZd2BA</recordid><startdate>19971011</startdate><enddate>19971011</enddate><creator>Alcock, C.</creator><creator>Allsman, R. 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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.</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><doi>10.1093/mnras/291.1.L13</doi><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | Oxford Open; EZB Electronic Journals Library |
| subjects | accretion accretion discs binaries: close binaries: spectroscopic stars: individual: RX J0527.8-6954 X-rays: stars |
| title | Optical identification of the LMC supersoft source RX J0527.8-6954 from MACHO project photometry |
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