@article{Muno:2004xi,
  added-at = {2009-11-20T11:52:19.000+0100},
  archiveprefix = {arXiv},
  author = {Muno, Michael P. and others},
  biburl = {https://www.bibsonomy.org/bibtex/2b06f2e2856c2f48df72f4710e0cfef3a/ad4},
  eprint = {astro-ph/0412492},
  interhash = {27038b6192444214efe4be6d5397c154},
  intrahash = {b06f2e2856c2f48df72f4710e0cfef3a},
  journal = {Astrophys. J.},
  keywords = {Centre Galactic X-ray},
  pages = {L113-L116},
  slaccitation = {%%CITATION = ASTRO-PH/0412492;%%},
  timestamp = {2009-11-20T11:52:20.000+0100},
  title = {{A}n {O}verabundance of {T}ransient {X}-ray {B}inaries within 1 pc of the {G}alactic {C}enter},
  volume = 622,
  year = 2005
}

@misc{Belczynski2003,
  abstract = {  Recent deep Chandra surveys of the Galactic center region have revealed the
existence of a faint, hard X-ray source population. While the nature of this
population is unknown, it is likely that several types of stellar objects
contribute. For sources involving binary systems, accreting white dwarfs and
accreting neutron stars with main sequence companions have been proposed. Among
the accreting neutron star systems, previous studies have focused on stellar
wind-fed sources. In this paper, we point out that binary systems in which mass
transfer occurs via Roche lobe overflow (RLOF) can also contribute to this
X-ray source population.

A binary population synthesis study of the Galactic center region has been
carried out, and it is found that evolutionary channels for neutron star
formation involving the accretion induced collapse of a massive ONeMg white
dwarf, in addition to the core collapse of massive stars, can contribute to
this population. The RLOF systems would appear as transients with quiescent
luminosities, above 2 keV, in the range from 10^31-10^32 ergs/s. The results
reveal that RLOF systems primarily contribute to the faint X-ray source
population in the Muno et al. (2003) survey and wind-fed systems can contribute
to the less sensitive Wang et al. (2002) survey. However, our results suggest
that accreting neutron star systems are not likely to be the major contributor
to the faint X-ray source population in the Galactic center.
},
  added-at = {2009-11-13T18:08:19.000+0100},
  author = {Belczynski, Krzysztof and Taam, Ronald E.},
  biburl = {https://www.bibsonomy.org/bibtex/2d4d8bb1411d45bb91d9e3c0d7f8fe202/ad4},
  description = {On the Chandra X-ray Sources in the Galactic Center},
  interhash = {282965a595899a685a0ccc27f7f4b9c9},
  intrahash = {d4d8bb1411d45bb91d9e3c0d7f8fe202},
  keywords = {Center Chandra Galactic Neutron Stars X-Ray},
  note = {cite arxiv:astro-ph/0311287
Comment: 12 pages, 3 figures, 1 table ApJ in press (Dec 2004). Substantial
  changes},
  timestamp = {2009-11-13T18:08:19.000+0100},
  title = {On the Chandra X-ray Sources in the Galactic Center},
  url = {http://arxiv.org/abs/astro-ph/0311287},
  year = 2003
}

@misc{Agueros2009,
  abstract = {  The ROSAT All-Sky Survey (RASS) was the first imaging X-ray survey of the
entire sky. While X-ray source counterparts are known to range from distant
quasars to nearby M dwarfs, the RASS data alone are often insufficient to
determine the nature of an X-ray source. As a result, large-scale follow-up
programs are required to construct samples of known X-ray emitters. We use
optical data produced by the Sloan Digital Sky Survey (SDSS) to identify 709
stellar X-ray emitters cataloged in the RASS and falling within the SDSS Data
Release 1 footprint. Most of these are bright stars with coronal X-ray emission
unsuitable for SDSS spectroscopy, which is designed for fainter objects (g > 15
mag). Instead, we use SDSS photometry, correlations with the Two Micron All Sky
Survey and other catalogs, and spectroscopy from the Apache Point Observatory
3.5 m telescope to identify these stellar X-ray counterparts. Our sample of 707
X-ray-emitting F, G, K, and M stars is one of the largest X-ray-selected
samples of such stars. We derive distances to these stars using photometric
parallax relations appropriate for dwarfs on the main sequence, and use these
distances to calculate LX. We also identify a previously unknown cataclysmic
variable (CV) as a RASS counterpart. Separately, we use correlations of the
RASS and the SDSS spectroscopic catalogs of CVs and white dwarfs (WDs) to study
the properties of these rarer X-ray-emitting stars. We examine the relationship
between (fX/fg) and the equivalent width of the Hbeta emission line for 46
X-ray-emitting CVs and discuss tentative classifications for a subset based on
these quantities. We identify 17 new X-ray-emitting DA (hydrogen) WDs, of which
three are newly identified WDs. (abridged)
},
  added-at = {2009-09-09T19:38:00.000+0200},
  author = {Agueros, Marcel and Anderson, Scott and Covey, Kevin and Hawley, Suzanne and Margon, Bruce and Newsom, Emily and Posselt, Bettina and Silvestri, Nicole and Szkody, Paula and Voges, Wolfgang},
  biburl = {https://www.bibsonomy.org/bibtex/270143af2ab689e7b5c07c470851c0834/ad4},
  description = {X-Ray-Emitting Stars Identified from the ROSAT All-Sky Survey and the
  Sloan Digital Sky Survey},
  interhash = {d98c5f291ff3d06170be03dfec9d97ea},
  intrahash = {70143af2ab689e7b5c07c470851c0834},
  keywords = {Sky Sources Survey X-ray},
  note = {cite arxiv:0903.4202
Comment: 23 pages, 15 figures, 8 tables; full catalog available online only},
  timestamp = {2009-09-09T19:38:00.000+0200},
  title = {{X}-{R}ay-{E}mitting {S}tars {I}dentified from the {ROSAT} {A}ll-{S}ky {S}urvey and the {S}loan {D}igital {S}ky {S}urvey},
  url = {http://arxiv.org/abs/0903.4202},
  year = 2009
}

@misc{Muno2006,
  abstract = {  We present the catalog of X-ray sources detected in a shallow Chandra survey
of the inner 2 by 0.8 degrees of the Galaxy, and in two deeper observations of
the Radio Arches and Sgr B2. The catalog contains 1352 objects that are
highly-absorbed (N_H > 4e22 cm^-2 and are therefore likely to lie near the
Galactic center (D~8 kpc), and 549 less-absorbed sources that lie within <6 kc
of Earth. Based on the inferred luminosities of the X-ray sources and the
expected numbers of various classes of objects, we suggest that the sources
with L_X < 1e33 erg/s that comprise ~90% of the catalog are cataclysmic
variables, and that the ~100 brighter objects are accreting neutron stars and
black holes, young isolated pulsars, and Wolf-Rayet and O stars in
colliding-wind binaries. We find that the spatial distribution of X-ray sources
matches that of the old stellar population observed in the infrared, which
supports our suggestion that most of the X-ray sources are old cataclysmic
variables. However, we find that there is an apparent excess of ~10 bright
sources in the Radio Arches region. That region is already known to be the site
of recent star formation, so we suggest that the bright sources in this region
are young high-mass X-ray binaries, pulsars, or WR/O star binaries. We briefly
discuss some astrophysical questions that this catalog can be used to address.
},
  added-at = {2009-07-21T12:32:20.000+0200},
  author = {Muno, M. P. and Bauer, F. E. and Bandyopadhyay, R. M. and Wang, Q. D.},
  biburl = {https://www.bibsonomy.org/bibtex/281a771e463a3ee068e557fde5dcd2615/ad4},
  description = {A Chandra Catalog of X-ray Sources in the Central 150 pc of the Galaxy},
  interhash = {5938cb664360bca4a5ee63fcb49dcca0},
  intrahash = {81a771e463a3ee068e557fde5dcd2615},
  keywords = {Black CHANDRA Gala Holes X-ray centre galactic},
  note = {cite arxiv:astro-ph/0601627
Comment: 16 pages, incl. 9 figures, 3 in color. Submitted to ApJ. An
  electronic catalog of X-ray point sources is located at
  http://astro.ucla.edu/~mmuno/sgra/shallow_survey_catalog.txt . A
  high-resolution version of figure 1 will be available when the manuscript is
  published},
  timestamp = {2009-07-21T12:32:20.000+0200},
  title = {{A} {C}handra {C}atalog of {X}-ray {S}ources in the {C}entral 150 pc of the {G}alaxy},
  url = {http://arxiv.org/abs/astro-ph/0601627},
  year = 2006
}