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The nature of the X-ray transient MAXI J0556−332

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Cornelisse, R., D'Avanzo, P., Campana, S., Casares, J., Charles, P. A., Israel, G. L., Muñoz-Darias, T., O'Brien, K., Steeghs, D., Stella, L. 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

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Official URL: http://dx.doi.org/10.1111/j.1365-2966.2011.20274.x

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

Official Date:

March 2012

Dates:

Date	Event
March 2012	Published

Volume:

Vol.420

Number:

No.4

Page Range:

pp. 3538-3544

Identifier:

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