dc.contributor.author | Shearer, A. | |
dc.contributor.author | Butler, R. | |
dc.contributor.author | Redfern, R. M. | |
dc.contributor.author | Cullum, M. | |
dc.contributor.author | Danks, A. C. | |
dc.date.accessioned | 2018-08-24T08:26:24Z | |
dc.date.available | 2018-08-24T08:26:24Z | |
dc.date.issued | 1996-12-20 | |
dc.identifier.citation | Shearer, A. Butler, R.; Redfern, R. M.; Cullum, M.; Danks, A. C. (1996). A search for the optical counterpart of the triple pulsar system psr b1620−26 in m4. The Astrophysical Journal 473 (2), | |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/10379/9874 | |
dc.description.abstract | We have performed photometry in B and V of the field of the triple system PSR B1620-26 in the globular cluster M4. Our images were taken with two two-dimensional imaging photon-counting detectors, which permitted deep exposures td be made without saturation. Photometry of the proposed optical counterpart of the second companion of PSR B1620-26 was obtained, yielding a magnitude V=21.30 +/- 0.08 and a color B - V = 1.32 +/- 0.20. The color index has not been successfully determined previously. These values locate the counterpart on the main sequence of the cluster color-magnitude diagram and lead to a mass determination that is consistent with a 0.48 M. cluster main-sequence star. | |
dc.publisher | IOP Publishing | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | binaries, close | |
dc.subject | globular clusters, individual (m4) | |
dc.subject | pulsars, individual (psr b1620-26) | |
dc.subject | techniques, photometric | |
dc.subject | globular-cluster | |
dc.subject | photometry | |
dc.subject | companion | |
dc.title | A search for the optical counterpart of the triple pulsar system psr b1620−26 in m4 | |
dc.type | Article | |
dc.identifier.doi | 10.1086/310398 | |
dc.local.publishedsource | http://iopscience.iop.org/article/10.1086/310398/pdf | |
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