Results 61 to 70 of about 2,622,417 (397)

Star Clusters

, 2006
Star clusters are observed in almost every galaxy. In this thesis we address several fundamental problems concerning the formation, evolution and disruption of star clusters. From observations of (young) star clusters in the interacting galaxy M51, we found that clusters are formed in complexes of stars and star clusters.
openaire   +6 more sources

The spatial distribution of star and cluster formation in M51

, 2008
Aims. We study the connection between spatially resolved star formation and young star clusters across the disc of M51. Methods. We combine star cluster data based on B, V, and I-band Hubble Space Telescope ACS imaging, together with new WFPC2 U-band ...
Alvensleben, Alvensleben, Alvensleven, Alvensleven, Bash, Bastian, Bastian, Bastian, Bastian, Bate, Beech, Bertelli, Bertin, Bik, Boeshaar, Cardelli, Charbonnel, Condon, Contopoulos, Contopoulos, de Grijs, de Grijs, Diaz, Dolphin, Efremov, Efremov, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elmegreen, Elson, Fall, Feldmeier, García-Burillo, Gieles, Gieles, Girardi, Gomez, Goodwin, H. J. G. L. M. Lamers, Helou, Hill, Holtzman, Hunter, Hwang, Jarrett, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kroupa, Lada, Larsen, Larsen, Larsen, Larsen, Larson, Marsh, Meurer, Mihos, Murgia, Murphy, Murphy, Niklas, Niklas, P. Anders, Patrikeev, R. A. Scheepmaker, Roberts, S. S. Larsen, Schaerer, Scheepmaker, Schlegel, Schuster, Tamburro, Tully, Whitmore, Whitmore, Yun, Zhang, Zimmer   +82 more
core   +2 more sources

Intergalactic stars in the Fornax cluster [PDF]

Monthly Notices of the Royal Astronomical Society, 1997
We have identified ten candidate intergalactic planetary nebulae in the Fornax galaxy cluster. These objects were found during observations in 1992 and 1993 in three fields chosen well away from any Fornax galaxy at 15 arcmin, 30 arcmin, and 45 arcmin from the centre of Fornax.
Stephen J. Warren, Tom Theuns, Tom Theuns   +2 more
openaire   +5 more sources

Shock-induced star cluster formation in colliding galaxies

, 2011
We studied the formation process of star clusters using high-resolution N-body/smoothed particle hydrodynamcs simulations of colliding galaxies. The total number of particles is 1.2x10^8 for our high resolution run.
Daisaka, Hiroshi, Kokubo, Eiichiro, Makino, Junichiro, Okamoto, Takashi, Saitoh, Takayuki R., Tomisaka, Kohji, Wada, Keiichi, Yoshida, Naoki   +7 more
core   +1 more source

The relation between star formation, morphology and local density in high redshift clusters and groups [PDF]

, 2008
We investigate how the [OII] properties and the morphologies of galaxies in clusters and groups at z=0.4-0.8 depend on projected local galaxy density, and compare with the field at similar redshifts and clusters at low-z.
Alfonso Aragón‐Salamanca, Anja von der Linden, Bianca M. Poggianti, Bo Milvang‐Jensen, Bolzonella M., Claire Halliday, Dennis Zaritsky, Douglas Clowe, Gabriella De Lucia, Goto T., Gregory Rudnick, Jesus Varela, Luc Simard, Pascale Jablonka, Philip Best, Roberto Saglia, Rose Finn, Roser Pelló, Simon White, Stefan Noll, Steven Bamford, Vandana Desai   +21 more
core   +4 more sources

Greatly Enhanced Merger Rates of Compact-object Binaries in Non-spherical Nuclear Star Clusters [PDF]

, 2017
The Milky Way and a significant fraction of galaxies are observed to host a central massive black hole (MBH) embedded in a non-spherical nuclear star cluster.
C. Petrovich, F. Antonini
semanticscholar   +1 more source

Star cluster disruption [PDF]

Proceedings of the International Astronomical Union, 2009
AbstractStar clusters are often used as tracers of major star-formation events in external galaxies as they can be studied out to much greater distances than individual stars. It is vital to understand their evolution if they are used to derive, for example, the star-formation history of their host galaxy. More specifically, we want to know how cluster
openaire   +4 more sources

Flare Stars in Star Clusters and Associations [PDF]

Symposium - International Astronomical Union, 1975
The study of stellar evolution can be undertaken either from a purely theoretical point of view or from a more observational approach. The present standpoint is the second one. It starts from the concepts of stellar evolution in associations and open clusters and from stellar flare activity.
V. A. Ambartsumian, L. V. Mirzoian
openaire   +2 more sources

Inflaton clusters and inflaton stars [PDF]

Journal of Cosmology and Astroparticle Physics, 2020
In a broad class of scenarios, inflation is followed by an extended era of matter-dominated expansion during which the inflaton condensate is nonrelativistic on subhorizon scales. During this phase density perturbations grow to the point of nonlinearity and collapse into bound structures.
Jens C. Niemeyer, Jens C. Niemeyer, Richard Easther   +2 more
openaire   +4 more sources

UOCS. XIII. Study of the Far-ultraviolet Bright Stars in the Open Cluster NGC 2420 Using AstroSat

The Astrophysical Journal
We present the study of four far-ultraviolet (FUV) bright stars in the field of the open cluster NGC 2420 using the Ultra Violet Imaging Telescope mounted on AstroSat.
R. K. S. Yadav, Arvind K. Dattatrey, Geeta Rangwal, Annapurni Subramaniam, D. Bisht, Ram Sagar   +5 more
doaj   +1 more source