Results 81 to 90 of about 365 (142)

Discovery of a Second Eclipsing, ​​​​​Bursting Neutron Star Low-mass X-Ray Binary in the Globular Cluster Terzan 6

The Astrophysical Journal
We have analyzed Chandra and Suzaku observations of the globular cluster Terzan 6, made when the recurrent transient GRS 1747–312 was in quiescence. Our analysis reveals the presence of a second eclipsing, bursting neutron star low-mass X-ray binary in ...
Maureen van den Berg, Jeroen Homan, Craig O. Heinke, David A. Pooley, Rudy Wijnands, Arash Bahramian, James C. A. Miller-Jones   +6 more
doaj   +1 more source

Chemical abundances of blue straggler stars in Galactic Globular Clusters [PDF]

, 2014
L. Lovisi
openalex   +1 more source

Dynamical Evolution of Four Old Galactic Open Clusters Traced by Their Constituent Stars with Gaia DR3

The Astronomical Journal
We investigate the evolutionary stages of four open clusters—Berkeley 39, Collinder 261, NGC 6819, and NGC 7789—of ages ranging from 1.6 to 6 Gyr. These clusters have previously been classified into dynamically young and intermediate age groups based on ...
Shanmugha Balan, Khushboo K. Rao, Kaushar Vaidya, Manan Agarwal, Souradeep Bhattacharya   +4 more
doaj   +1 more source

A Spectroscopic Analysis of Blue Stragglers, Horizontal Branch Stars, and Turnoff Stars in Four Globular Clusters [PDF]

, 2005
Orsola De Marco, Michael M. Shara, David Zurek, John A. Ouellette, T. Lanz, R. A. Saffer, J. F. Sepinsky   +6 more
openalex   +1 more source

Dynamical Signatures of Trumpler 19: A Statistical and Photometric Perspective

The Astrophysical Journal
We present a statistical approach to investigating the dynamical evolution of the old open cluster Trumpler 19. We identified 810 cluster members using an ensemble-based unsupervised machine learning method applied to Gaia Data Release 3 astrometric data.
A. H. Sheikh, Biman J. Medhi, Ram Sagar
doaj   +1 more source

THE NON-SEGREGATED POPULATION OF BLUE STRAGGLER STARS IN THE REMOTE GLOBULAR CLUSTER PALOMAR 14 [PDF]

, 2011
Giacomo Beccari, Antonio Sollima, Francesco R. Ferraro, Barbara Lanzoni, Michele Bellazzini, Guido De Marchi, David Valls-Gabaud, Robert T. Rood, Giacomo Beccari, Antonio Sollima, Francesco R. Ferraro, Barbara Lanzoni, Michele Bellazzini, Guido De Marchi, David Valls-Gabaud, Robert T. Rood   +15 more
openalex   +1 more source

Spectroscopy of Blue Stragglers and Turnoff Stars in M67 (NGC 2682) [PDF]

, 2000
Matthew Shetrone, Eric L. Sandquist
openalex   +1 more source

Discovery of a Double Sequence of Blue Straggler Stars in the Core-collapsed Globular Cluster NGC 6256 [PDF]

, 2022
Mario Cadelano, F. R. Ferraro, E. Dalessandro, B. Lanzoni, Cristina Pallanca, Sara Saracino   +5 more
openalex   +1 more source

The Blue Straggler Star population in NGC6229 [PDF]

The Monthly Notices of the Royal Astronomical Society, 2012
N. Sanna, E. Dalessandro, B. Lanzoni, F. R. Ferraro, G. Beccari, R. T. Rood   +5 more
openaire   +2 more sources

Cosmic-Lab: Chemical and kinematical properties of Blue Straggler stars in Galactic Globular Clusters [PDF]

, 2014
L. Lovisi
openalex   +1 more source