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XMM-Newton and chandra observations of neutron stars and cataclysmic variables in the globular cluster NGC 2808

XMM-Newton and chandra observations of neutron stars and cataclysmic variables in the globular cluster NGC 2808
XMM-Newton and chandra observations of neutron stars and cataclysmic variables in the globular cluster NGC 2808
We report on XMM-Newton and Chandra observations of the globular cluster NGC 2808. We detect one quiescent low mass X-ray binary of the 3±1 expected, if these systems are formed through encounters, and we show evidence for the presence of 20±10 bright cataclysmic variables in the core with a luminosity above 4×1031 erg s?1. We also review the specific nature of cataclysmic variables in globular clusters with reference to recent VLT/FORS1 observations of a cataclysmic variable in M 22
globular clusters: individual (NGC 2808, M 22), stars: neutron, cataclysmic variables, binaries: close
373-374
Servillat, M.
d6a403fa-f475-493b-ae95-fa8b544ed567
Webb, N.A.
ec9e7c5c-2662-4c15-99bb-18075fa47870
Barret, D.
343cdacd-9683-4f70-910b-6539201daf06
Cornelisse, R.
06976a3f-4a05-4c72-8462-7e71b00e7b77
Dieball, A.
7f8cc053-51b8-4ddf-acdd-f55796c33703
Knigge, C.
ac320eec-631a-426e-b2db-717c8bf7857e
Long, K.S.
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Shara, M.M.
4d9c7bc7-3420-4773-b421-b1f5c362ab5b
Zurek, D.R.
4745ee98-520b-4e26-a05a-113c0c563b97
Servillat, M.
d6a403fa-f475-493b-ae95-fa8b544ed567
Webb, N.A.
ec9e7c5c-2662-4c15-99bb-18075fa47870
Barret, D.
343cdacd-9683-4f70-910b-6539201daf06
Cornelisse, R.
06976a3f-4a05-4c72-8462-7e71b00e7b77
Dieball, A.
7f8cc053-51b8-4ddf-acdd-f55796c33703
Knigge, C.
ac320eec-631a-426e-b2db-717c8bf7857e
Long, K.S.
91417b3d-d408-475a-8907-eec131e17c66
Shara, M.M.
4d9c7bc7-3420-4773-b421-b1f5c362ab5b
Zurek, D.R.
4745ee98-520b-4e26-a05a-113c0c563b97

Servillat, M., Webb, N.A., Barret, D., Cornelisse, R., Dieball, A., Knigge, C., Long, K.S., Shara, M.M. and Zurek, D.R. (2007) XMM-Newton and chandra observations of neutron stars and cataclysmic variables in the globular cluster NGC 2808. Proceedings of the International Astronomical Union, 3 (S246), 373-374. (doi:10.1017/S1743921308016001).

Record type: Article

Abstract

We report on XMM-Newton and Chandra observations of the globular cluster NGC 2808. We detect one quiescent low mass X-ray binary of the 3±1 expected, if these systems are formed through encounters, and we show evidence for the presence of 20±10 bright cataclysmic variables in the core with a luminosity above 4×1031 erg s?1. We also review the specific nature of cataclysmic variables in globular clusters with reference to recent VLT/FORS1 observations of a cataclysmic variable in M 22

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Published date: September 2007
Keywords: globular clusters: individual (NGC 2808, M 22), stars: neutron, cataclysmic variables, binaries: close

Identifiers

Local EPrints ID: 144207
URI: http://eprints.soton.ac.uk/id/eprint/144207
PURE UUID: b335caad-99d7-4a24-a2f8-57fbdf96dbc1

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Date deposited: 07 Jun 2010 12:12
Last modified: 08 Nov 2021 18:10

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Contributors

Author: M. Servillat
Author: N.A. Webb
Author: D. Barret
Author: R. Cornelisse
Author: A. Dieball
Author: C. Knigge
Author: K.S. Long
Author: M.M. Shara
Author: D.R. Zurek

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