Searching for the orbital period of the ultraluminous X-ray source NGC 1313 X-2

Zampieri, L. and Impiombato, D. and Falomo, R. and Grise', F. and Soria, R. 2012. Searching for the orbital period of the ultraluminous X-ray source NGC 1313 X-2. Monthly Notices of the Royal Astronomical Society. 419: pp. 1331-1337.

Source Title

Monthly Notices of the Royal Astronomical Society

DOI

10.1111/j.1365-2966.2011.19790.x

ISSN

1365-2966

School

Curtin Institute of Radio Astronomy (Physics)

Remarks

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society, ©: 2011, the authors and the Royal Astronomical Society. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

URI

http://hdl.handle.net/20.500.11937/34443

Collection

Curtin Research Publications

Abstract

We analysed the longest phase-connected photometric data set available for NGC 1313 X-2, looking for the ~6-day modulation reported by Liu et al.. The folded B-band light curve shows a ~6-day periodicity with a significance slightly larger than 3σ. The low statistical significance of this modulation, along with the lack of detection in the V band, makes its identification uncertain.