Cornelisse, R., D'Avanzo, P., Campana, S., Casares, J., Charles, P. A., Israel, G. L., Muñoz-Darias, T., O'Brien, K., Steeghs, D. (Danny), 1972-, Stella, L. (Luigi), 1957- and Torres, M. A. P.. (2012) The nature of the X-ray transient MAXI J0556−332. Monthly Notices of the Royal Astronomical Society, Vol.420 (No.4). pp. 3538-3544. ISSN 0035-8711

Preview

Text WRAP_Steeghs_Maxi_1111.6946v1.pdf - Accepted Version Download (366Kb) | Preview

Abstract

Phase-resolved spectroscopy of the newly discovered X-ray transient MAXIJ0556-332 has revealed the presence of narrow emission lines in the Bowen region that most likely arise on the surface of the mass donor star in this low-mass X-ray binary. A period search of the radial velocities of these lines provides two candidate orbital periods (16.43 ± 0.12 and 9.754 ± 0.048h), which differ from any potential X-ray periods reported. Assuming that MAXIJ0556-332 is a relatively high-inclination system that harbours a precessing accretion disc in order to explain its X-ray properties, it is only possible to obtain a consistent set of system parameters for the longer period. These assumptions imply a mass ratio of q≃ 0.45, a radial velocity semi-amplitude of the secondary of K 2≃ 190kms -1 and a compact object mass of the order of the canonical neutron star mass, making a black hole nature for MAXIJ0556-332 unlikely. We also report the presence of strong Niii emission lines in the spectrum, thereby inferring a high N/O abundance. Finally, we note that the strength of all emission lines shows a continuing decay over the ≃1 month of our observations.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	X-ray bursts, Double stars
Journal or Publication Title:	Monthly Notices of the Royal Astronomical Society
Publisher:	Wiley
ISSN:	0035-8711
Date:	March 2012
Volume:	Vol.420
Number:	No.4
Page Range:	pp. 3538-3544
Identification Number:	10.1111/j.1365-2966.2011.20274.x
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Spain. Ministerio de Educación y Ciencia (MEC), European Commission (EC), Spain. Ministerio de Ciencia e Innovación (MICINN), Seventh Framework Programme (European Commission) (FP7), Science and Technology Facilities Council (Great Britain) (STFC)
Grant number:	RYC-2007-01046 (MEC), PERG04-GA- 2008-239142 (EC), AYA 2010-18080 (MICINN), CSD 2006-00070 (MICINN), ITN 215212 (FP7)
References:	Belloni T., Motta S., Mu˜noz-Darias T., Stiele H., 2011, ATel, 3112 Charles P.A., & Coe M.J., 2006, in “Compact stellar X-ray sources”, Cambridge Astrophysics series, No. 39, Cambridge University Press, p. 215 Coriat M., Tzioumis A.K., Corbel S., Fender R., Brocksopp C., Broderick J., Casella P., Maccarone T., 2011, ATel, 3119 Cornelisse R., Casares J., Steeghs D., Barnes A.D., Charles P.A., Hynes R. I., O’Brien K., 2007, MNRAS, 375, 1463 Cornelisse R., Casares J., Mu˜noz-Darias T., Steeghs D., Charles P.A., Hynes R.I., O’Brien K., Barnes A.D., 2008, “A Population Explosion: The Nature & Evolution of Xray Binaries in Diverse Environments”, AIP Conf. Proc., Vol. 1010, p. 148 Diaz-Trigo M., Parmar A.N., Boirin L., Motch C., Talavera A., Balman S., 2009, A&A, 493, 145 Fender R.P., Russell D.M., Knigge C., Soria R., Hynes R.I., Goad M. 2009, MNRAS, 393, 1608 Goldoni P., Royer F., Francois P., Horrobin M., Blanc G., Vernet J., Modigliani A., Larsen J., 2006, SPIE, 6269, 80 Gray, D.F., 1992, “The Observation and Analysis of Stellar Photospheres”, CUP, 20 Halpern J.P., 2011, ATel, 3104 Homan J., Linares M., van den Berg M., Fridriksson J. 2011, ATel, 3650 Horne K., 1986, PASP, 98, 609 van Hoof P.A.M., Verner D. 1997, in “Proceedings of the first ISO workshop on Analytical Spectroscopy”, Eds. A.M. Heras, K. Leech, N.R. Trams and M. Perry, ESA Publications Division, 1997, p. 273 Kennea J.A., Evans P.A., Krimm H., Romano P., Mangano V., Curran P. Yamaoka K., 2011, ATel, 3103 Maitra D., ReynoldsM.T., Miller J.M., Raymond J., 2011a, ATel, 3349 Maitra D., Miller J.M., Raymond J.C., Reynolds M.T. 2011b, accepted for ApJ Letters, astro-ph/1110.6918 Matsumura T., Negoro H., Suwa F., Nakahira S., Ueno S., Tomida H., Kohama M., Ishikawa M., et al. 2011, ATel, 3102 Mu˜noz-Darias T., Casares J., Martinez-Pais I.G., 2005, ApJ, 635, 502 Nelemans G., Jonker P.G., Marsh T.R., van der Klis M., 2004, MNRAS, 348, L7 Osaki, Y., in Proc. Japan Acad. Ser. B, Physical and Biological Sciences, Tokyo, p. 291 Paczynski B. 1974, A&A, 34, 161 Patterson J., FentonW.H., Thorstensen J.R., Harvey D.A., Skillman D.R., Fried R.E., Monard B., et al., 2002, PASP, 114, 802 Patterson J., Kemp J., Harvey D.A., Fried R.E., Rea R., Monard B., Cook L.M., Skillman D.R., et al., 2005, PASP, 117, 1204 Psaltis D., 2006, in “Compact stellar X-ray sources”, Cambridge Astrophysics series, No. 39, Cambridge University Press, p. 1 Russell D.M., Lewis F., Doran R., Roberts S., 2011, ATel, 3116 Scargle, J.D., 1982, ApJ, 263, 835 Shahbaz T., Smale A.P., Naylor T., Charles P.A., van Paradijs J., Hassall B.J.M., Callanan P., 1996, MNRAS, 282, 1437 Steeghs D., & Casares J., 2002, ApJ, 568, 273 Strohmayer T.E., 2011, ATel, 3110 Wade R.A., Horne K., 1988, ApJ, 324, 411 Whitehurst R., 1988, MNRAS, 232, 35
URI:	http://wrap.warwick.ac.uk/id/eprint/44913

Request changes to a record

Actions (login required)

View Item