Results 21 to 30 of about 3,131 (230)

STELLAR COLLISIONS AND BLUE STRAGGLER STARS IN DENSE GLOBULAR CLUSTERS [PDF]

The Astrophysical Journal, 2013
18 pages, 13 Figures (two-column), 1 Table, Accepted to ...
Chatterjee, S., Rasio, F.A., Sills, A., Glebbeek, E.   +3 more
openaire   +3 more sources

A Wide Metallicity Range for Gyr-old Stars in the Nuclear Star Cluster

The Astrophysical Journal Letters, 2023
We report metallicities for three ∼Gyr-old stars in the Milky Way nuclear star cluster (NSC) using high-resolution near-infrared spectroscopy. We derive effective temperatures from a calibration with Sc line strength, which yields results in good ...
B. Thorsbro, R. Forsberg, G. Kordopatis, A. Mastrobuono-Battisti, R. P. Church, R. M. Rich, N. Ryde, M. Schultheis, S. Nishiyama   +8 more
doaj   +1 more source

Composition Mixing during Blue Straggler Formation and Evolution [PDF]

, 1996
We use smoothed-particle hydrodynamics to examine differences between direct collisions of single stars and binary star mergers in their roles as possible blue straggler star formation mechanisms.
Eggleton P. P., Eric L. Sandquist, Gratton R. G., Jorgensen H. E., Jorgensen H. E., Kaluzny J., Lars Hernquist, Lauzeral C., Lauzeral C., Mateo M., Mathys G., Michael Bolte, Monaghan J. J., Monaghan J. J., Niss B., Seaton M. J., Yan L.   +16 more
core   +3 more sources

M67 Blue Stragglers with High-resolution Infrared Spectroscopy

The Astronomical Journal, 2023
We report on the first detailed infrared chemical analysis of five binary members (S277, S997, S975, S1031, and S1195) in the open cluster M67 (NGC 2682).
K. E. Brady, C. Sneden, C. A. Pilachowski, Melike Afşar, G. N. Mace, D. T. Jaffe, N. M. Gosnell, R. Seifert   +7 more
doaj   +1 more source

Observations of blue straggler stars in globular clusters [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractBlue stragglers stars (BSS) define a sparsely populated sequence extending to higher luminosity than the turnoff point of normal main sequence stars in the color magnitude diagrams of stellar aggregates, thus mimicking a rejuvenated (more massive) stellar population. The nature of these stars has been a puzzle for many years and their formation
Ferraro, Francesco R., Lanzoni, Barbara
openaire   +2 more sources

Blue Straggler Stars in Globular Clusters: a powerful tool to probe the internal dynamical evolution of stellar systems [PDF]

, 2014
This chapter presents an overview of the main observational results obtained to date about Blue Straggler Stars (BSSs) in Galactic Globular Clusters (GCs).
A. Dotter, A. Marín-Franch, A. Moretti, A. Mucciarelli, A. P. Milone, A. Pietrinferni, A. R. Sandage, A. Renzini, A. Sarajedini, A. Sarajedini, A. Sills, A. Sills, A. Sollima, B. Lanzoni, B. Lanzoni, B. Lanzoni, B. Lanzoni, B. Lanzoni, B. Tian, C. D. Bailyn, C. Knigge, D. C. Heggie, D. E. McLaughlin, D. Quievy, E. Carretta, E. Dalessandro, E. Dalessandro, E. Dalessandro, E. Sabbi, F. Fusi Pecci, F. Paresce, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, G. Beccari, G. Beccari, G. Fiorentino, G. Meylan, G. Piotto, J. Anderson, J. C. Lombardi Jr, J. G. Hills, K. Jordi, L. Lovisi, L. Lovisi, L. Lovisi, L. Lovisi, M. Auriere, M. B. Davies, M. Bolte, M. J. Sarna, M. M. Shara, M. Mapelli, M. Mapelli, M. Mapelli, M. Monelli, N. Leigh, N. Leigh, N. Leigh, O. Marco De, P. Cariulo, P. Guhathakurta, P. J. T. Leonard, R. Buonanno, R. Contreras Ramos, R. D. Mathieu, R. L. Gilliland, R. Zinn, S. Djorgovski, S. Djorgovski, S. Lucatello, S. R. Warren, S. Sigurdsson, W. Benz, W. H. McCrea   +80 more
core   +2 more sources

THE UNIMODAL DISTRIBUTION OF BLUE STRAGGLER STARS IN M75 (NGC 6864) [PDF]

The Astrophysical Journal, 2012
ApJ accepted, 10 pages, 11 figures, 2 ...
CONTRERAS, RODRIGO, FERRARO, FRANCESCO ROSARIO, DALESSANDRO, EMANUELE, LANZONI, BARBARA, R. T. Rood   +4 more
openaire   +3 more sources

Ecology of Blue Straggler Stars

, 2014
Ecology of Blue Straggler Stars, H.M.J. Boffin, G. Carraro & G.
Boffin, H. M. J., Carraro, G., Beccari, G.   +2 more
openaire   +2 more sources

BLUE STRAGGLER STAR POPULATIONS IN GLOBULAR CLUSTERS. I. DYNAMICAL PROPERTIES OF BLUE STRAGGLER STARS IN NGC 3201, NGC 6218, AND ω CENTAURI [PDF]

The Astrophysical Journal, 2014
16 pages, 12 figures, accepted in ...
Simunovic, M., Puzia, Thomas H.
openaire   +7 more sources

UOCS-IX. AstroSat/UVIT Study of the Open Cluster NGC 2818: Blue Stragglers, Yellow Stragglers, Planetary Nebula, and their Membership

The Astrophysical Journal, 2023
We present the first far-UV (FUV) imaging results of the intermediate-age Galactic open cluster NGC 2818 that has a planetary nebula (PN) within the field using images taken from the Ultra Violet Imaging Telescope (UVIT) aboard AstroSat.
Sharmila Rani, Gajendra Pandey, Annapurni Subramaniam, N. Kameswara Rao   +3 more
doaj   +1 more source