Results 61 to 70 of about 87,149 (376)

Multiple Populations in Low-mass Globular Clusters: Eridanus

The Astrophysical Journal, 2023
Multiple populations (MPs), characterized by variations in light elemental abundances, have been found in stellar clusters in the Milky Way, Magellanic Clouds, as well as several other dwarf galaxies.
Yue Wang, Baitian Tang, Chengyuan Li, Holger Baumgardt, Ricardo R. Muñoz, José G. Fernández-Trincado, Doug Geisler, Yuanqing Fang   +7 more
doaj   +1 more source

VARIABLE STARS IN THE GLOBULAR CLUSTER NGC 2808 [PDF]

The Astronomical Journal, 2013
The first calibrated broadband BVI time-series photometry is presented for the variable stars in NGC 2808, with observations spanning a range of twenty-eight years. We have also redetermined the variability types and periods for the variable stars identified previously by Corwin et al, revising the number of probable fundamental-mode RR Lyrae variables
Kunder, Andrea, Stetson, Peter B., Catelan, Marcio, Walker, Alistair R., Amigo, Pia   +4 more
openaire   +6 more sources

Did Globular Clusters Reionize the Universe? [PDF]

, 2002
A problem still unsolved in cosmology is the identification of the sources of radiation able to reionize HI in the intergalactic medium (IGM) by z~6. Theoretical works and observations seem to indicate that the fraction, f_esc, of HI ionizing radiation ...
Becker, Benson, Bianchi, Cayrel, Chaboyer, Chernoff, Ciardi, Deharveng, Djorgovski, Dove, Fall, Ferguson, Giallongo, Gnedin, Gnedin, Gnedin, Gnedin, Harris, Harris, Harris, Hu, Hurwitz, Kundu, Kundu, Lanzetta, Larson, Leitherer, Madau, Massimo Ricotti, McLaughlin, McLaughlin, Meiksin, Miralda-Escudé, Peebles, Persic, Ricotti, Ricotti, Ricotti, Songaila, Steidel, Stetson, Taniguchi, Van Den Bergh, Wood, Zepf   +44 more
core   +3 more sources

Hot stars in globular clusters [PDF]

, 1995
Globular clusters are ideal laboratories to study the evolution of low-mass stars. In this review, I shall concentrate on two types of hot stars observed in globular clusters: horizontal branch stars and UV bright stars. The third type, the white dwarfs, are covered by Bono in this volume.
Sabine Moehler, Ulrich Heber, Klaas S. de Boer   +2 more
openaire   +1 more source

Chemical evolution of star clusters

, 2009
I discuss the chemical evolution of star clusters, with emphasis on old globular clusters, in relation to their formation histories. Globular clusters clearly formed in a complex fashion, under markedly different conditions from any younger clusters ...
Abia C., Charbonnel C., Dubath P., Mackey A. D., Romano D., van Loon J. Th., Yi S. K.   +6 more
core   +1 more source

The star formation histories of quiescent ultra-diffuse galaxies and their dependence on environment and globular cluster richness [PDF]

, 2023
Anna Ferré-Mateu, Jonah S. Gannon, Duncan A. Forbes, Maria Luísa Buzzo, Aaron J. Romanowsky, Jean P. Brodie   +5 more
openalex   +3 more sources

Globular cluster formation triggered by the initial starburst in galaxy formation [PDF]

, 1999
We propose and investigate a new formation mechanism for globular clusters in which they form within molecular clouds that are formed in the shocked regions created by galactic winds driven by successive supernova explosions shortly after the initial ...
IKEUCHI Satoru, TANIGUCHI Yoshiaki, TRENTHAM Neil, 了 池内   +3 more
core   +4 more sources

Star Clusters Near and Far [PDF]

, 2020
Star clusters are fundamental units of stellar feedback and unique tracers of their host galactic properties. In this review, we will first focus on their constituents, i.e.
A. Adamo, P. Zeidler, P. Zeidler, J. Kruijssen, M. Chevance, M. Gieles, D. Calzetti, C. Charbonnel, C. Charbonnel, H. Zinnecker, M. Krause   +10 more
semanticscholar   +1 more source

THE GLOBULAR CLUSTER NGC 5286. II. VARIABLE STARS [PDF]

The Astronomical Journal, 2010
We present the results of a search for variable stars in the globular cluster NGC 5286, which has recently been suggested to be associated with the Canis Major dwarf spheroidal galaxy. 57 variable stars were detected, only 19 of which had previously been known.
Zorotovic, M., Catelan, M., Smith, H. A., Pritzl, B. J., Aguirre, P., Angulo, R. E., Aravena, M., Assef, R. J., Contreras, C., Cortes, C., De Martini, G., Escobar, M. E., Gonzalez, D., Jofre, P., Lacerna, I., Navarro, C., Palma, O., Prieto, G. E., Recabarren, E., Trivino, J., Vidal, E.   +20 more
openaire   +5 more sources

On the disc and halo of the milky way through a study of star clusters [PDF]

Serbian Astronomical Journal, 2000
The subject is the metallicity and the correlation between the metallicity and spatial distribution of star clusters of the Milky Way. The open star clusters are confirmed as good indicators for the population of the galactic disc, whereas the globular ...
Nagl M.
doaj   +1 more source