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The X-ray source population of the globular cluster M15: Chandra high-resolution imaging

Hannikainen, D C; Charles, P A; van Zyl, L; Kong, A K H; Homer, L; Hakala, P; Naylor, T and Davies, Melvyn B LU (2005) In Monthly Notices of the Royal Astronomical Society 357(1). p.325-332
Abstract
The globular cluster M15 was observed on three occasions with the High Resolution Camera on- board Chandra in 2001 in order to investigate the X- ray source population in the cluster centre. After subtraction of the two bright central sources, four faint sources were identified within 50 arcsec of the core. One of these sources is probably the planetary nebula K648, making this the first positive detection of X- rays from a planetary nebula inside a globular cluster. Another two are identified with UV variables (one previously known), which we suggest are cataclysmic variables (CVs). The nature of the fourth source is more difficult to ascertain, and we discuss whether it is possibly a quiescent soft X- ray transient or also a CV.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
clusters : individual : M15, X-rays : binaries, stars : dwarf novae, planetary nebulae : individual : K648, globular
in
Monthly Notices of the Royal Astronomical Society
volume
357
issue
1
pages
325 - 332
publisher
Wiley-Blackwell
external identifiers
  • wos:000226790100030
  • scopus:13844277077
ISSN
1365-2966
DOI
10.1111/j.1365-2966.2004.08652.x
language
English
LU publication?
yes
id
3019b4f6-8159-4034-ba51-2265f1d31b4d (old id 253494)
date added to LUP
2007-09-23 16:04:36
date last changed
2017-08-20 03:43:09
@article{3019b4f6-8159-4034-ba51-2265f1d31b4d,
  abstract     = {The globular cluster M15 was observed on three occasions with the High Resolution Camera on- board Chandra in 2001 in order to investigate the X- ray source population in the cluster centre. After subtraction of the two bright central sources, four faint sources were identified within 50 arcsec of the core. One of these sources is probably the planetary nebula K648, making this the first positive detection of X- rays from a planetary nebula inside a globular cluster. Another two are identified with UV variables (one previously known), which we suggest are cataclysmic variables (CVs). The nature of the fourth source is more difficult to ascertain, and we discuss whether it is possibly a quiescent soft X- ray transient or also a CV.},
  author       = {Hannikainen, D C and Charles, P A and van Zyl, L and Kong, A K H and Homer, L and Hakala, P and Naylor, T and Davies, Melvyn B},
  issn         = {1365-2966},
  keyword      = {clusters : individual : M15,X-rays : binaries,stars : dwarf novae,planetary nebulae : individual : K648,globular},
  language     = {eng},
  number       = {1},
  pages        = {325--332},
  publisher    = {Wiley-Blackwell},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {The X-ray source population of the globular cluster M15: Chandra high-resolution imaging},
  url          = {http://dx.doi.org/10.1111/j.1365-2966.2004.08652.x},
  volume       = {357},
  year         = {2005},
}