Results 21 to 30 of about 352,865 (294)

Lithopanspermia in Star-Forming Clusters [PDF]

open access: yesAstrobiology, 2005
This paper considers the lithopanspermia hypothesis in star forming groups and clusters, where the chances of biological material spreading from one solar system to another is greatly enhanced (relative to the field) due to the close proximity of the systems and lower relative velocities. These effects more than compensate for the reduced time spent in
Adams, Fred C., Spergel, David N.
openaire   +4 more sources

Star Formation in the Field and Clusters of NGC 5253 [PDF]

open access: yes, 2001
We investigate the star formation history of both the bright star clusters and the diffuse `field star' population in the dwarf starburst galaxy NGC 5253 using STIS longslit ultraviolet spectroscopy.
Buat V.   +9 more
core   +2 more sources

Massive star and star cluster formation [PDF]

open access: yesProceedings of the International Astronomical Union, 2006
AbstractI review the status of massive star formation theories: accretion from collapsing, massive, turbulent cores; competitive accretion; and stellar collisions. I conclude the observational and theoretical evidence favors the first of these models.
openaire   +2 more sources

First Evidence of Multi-iron Subpopulations in the Bulge Fossil Fragment Candidate Liller 1

open access: yesThe Astrophysical Journal, 2023
In the context of a project aimed at characterizing the properties of the so-called Bulge Fossil Fragments (the fossil remnants of the bulge formation epoch), here we present the first determination of the metallicity distribution of Liller 1.
Chiara Crociati   +11 more
doaj   +1 more source

The Star Cluster System in the Local Group Starburst Galaxy IC 10

open access: yes, 2015
We present a survey of star clusters in the halo of IC 10, a starburst galaxy in the Local Group based on Subaru R band images and NOAO Local Group Survey UBVRI images. We find five new star clusters.
Lee, Myung Gyoon, Lim, Sungsoon
core   +1 more source

The evolution of star clusters: the resolved-star approach

open access: yesAstrophysics and Space Science, 2009
We present the first results of a new technique to detect, locate, and characterize young dissolving star clusters. Using HST/ACS archival images of the nearby galaxy IC2574, we performed stellar PSF photometry and selected the most massive stars as our first test sample.
Pellerin, A   +3 more
openaire   +4 more sources

Filamentary Star Formation in NGC 1275 [PDF]

open access: yes, 2014
We examine the star formation in the outer halo of NGC~1275, the central galaxy in the Perseus cluster (Abell 426), using far ultraviolet and optical images obtained with the Hubble Space Telescope.
Canning, R. E. A   +10 more
core   +2 more sources

The formation of star clusters [PDF]

open access: yes, 2003
The ability of HST to resolve objects ten times smaller than possible from the ground has rejuvenated the study of young star clusters. A recurrent morphological theme found in nearby resolved sytems is the observation of young (typically 1 - 10 Myr), massive (10**3 - 10**4 M_sun), compact (rho ~ 10**5 M_sun/pc**3) clusters which have evacuated the gas
openaire   +2 more sources

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

open access: yesThe 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   +5 more
doaj   +1 more source

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