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Discovery of tidal tails around the distant globular cluster Palomar 14
tidal tails the distant globular cluster Palomar 14
2011/1/13
We report the detection of a pair of degree-long tidal tails associated with the globular cluster Palomar 14, using images obtained at the CFHT. We reveal a power-law departure from a King profile at...
Cataclysmic Variables and Other Compact Binaries in the Globular Cluster NGC 362: Candidates from Chandra and HST
cataclysmic binaries close binary stars globular clusters X-ray binaries
2010/11/10
Highly sensitive and precise X-ray imaging from Chandra, combined with the superb spatial resolution of HST optical images, dramatically enhances our empirical understanding of compact binaries such a...
The Cluster AgeS Experiment (CASE). Variable Stars in the Globular Cluster M55
stars dwarf novae – globular clusters individual M55 – binaries
2010/11/10
We report time-series photometry for 55 variable stars located in the central part of the
globular cluster M55. The sample includes 28 newly identified objects of which 13 are eclipsing
binaries. Th...
An analysis of the blue straggler population in the Sgr dSph globular cluster Arp 2
open clusters and associations general - open clusters and associations individual (Arp 2) - binaries
2010/11/12
We present and discuss new BVI CCD photometry in the field of the globular cluster Arp 2,
which is considered a member of the Sagittarius Dwarf Spheroidal Galaxy. The main goal
of this investigation...
The optical companion to the binary millisecond pulsar J1824-2452H in the globular cluster M28
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/31
We report on the optical identification of the companion star to the eclipsing millisecond pulsar PSR J1824-2452H in the galactic globular cluster M28 (NGC 6626). This star is at only 0.2" from the no...
Radial Velocity and Metallicity of the Globular Cluster IC4499 Obtained with AAOmega
Galaxy Astrophysics (astro-ph.GA)
2010/12/23
We present radial velocity and metallicity measurements for the far-southern Galactic globular cluster IC4499. We selected several hundred target red giant stars in and around the cluster from the 2MA...
Lithium and proton-capture elements in Globular Cluster dwarfs: the case of 47 Tuc
Stars abundances Stars Individual Population II- (Galaxy:) globular clusters
2010/3/9
Previous surveys in a few metal-poor Globular Clusters (GCs) showed that the determination of abundances for Li and proton-capture elements offers a key tool to address the intra-cluster pollution sce...
A GLOBULAR-CLUSTER MODEL WITH VARIABLE MEAN MASS OF A SINGLE STAR
GLOBULAR-CLUSTER MODEL SINGLE STAR VARIABLE MEAN MASS
2009/4/8
The application of the basic hydrodynamical equations to globular
clusters is reconsidered. As usually, these stellar systems are assumed to be
spherically symmetric and in a steady state with an is...