Results 31 to 40 of about 440,600 (338)
Massive star and star cluster formation [PDF]
Proceedings 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
The reversal of the SF-density relation in a massive, X-ray selected galaxy cluster at z=1.58: results from Herschel [PDF]
, 2014 Dusty, star-forming galaxies have a critical role in the formation and evolution of massive galaxies in the Universe. Using deep far-infrared imaging in the range 100-500um obtained with the Herschel telescope, we investigate the dust-obscured star ...
Altieri, . Bruno +10 more
core +3 more sources
The Astrophysical Journal, 2023 We present a comprehensive analysis of the Galactic mid-infrared bubble [HKS2019] E70 (E70) by adopting a multiwavelength approach to understand the physical environment and star formation scenario around it.
Aayushi Verma +10 more
doaj +1 more source
Kernel Density Estimation in the Study of Star Clusters
Open Astronomy, 2016 The kernel estimator method is used to evaluate the surface and spatial star number density in star clusters. Both density maps and radial density profiles are plotted.
Seleznev Anton F.
doaj +1 more source
The embedded cluster or association Trumpler 37 in IC1396: a search for evolutionary constraints [PDF]
, 2012 It is currently widely accepted that open star clusters and stellar associations result from the evolution of embedded star clusters. Parameters such star formation efficiency, time-scale of gas removal and velocity dispersion can be determinants of ...
Bica, E., Bonatto, C., Saurin, T. A.
core +2 more sources
Z-FIRE: ISM properties of the z = 2.095 COSMOS Cluster [PDF]
, 2015 We investigate the ISM properties of 13 star-forming galaxies within the z~2 COSMOS cluster. We show that the cluster members have [NII]/Ha and [OIII]/Hb emission-line ratios similar to z~2 field galaxies, yet systematically different emission-line ...
Cowley, Michael +11 more
core +4 more sources
Does God play dice with star clusters?
The Open Journal of Astrophysics, 2023 When a detailed model of a stellar population is unavailable, it is most common to assume that stellar masses are independently and identically distributed according to some distribution: the universal initial mass function (IMF). However, stellar masses
Michael Y. Grudic +4 more
doaj +1 more source
Membership Analysis and 3D Kinematics of the Star-forming Complex around Trumpler 37 Using Gaia-DR3
The Astrophysical Journal, 2023 Identifying and characterizing young populations of star-forming regions are crucial to unraveling their properties. In this regard, Gaia-DR3 data and machine-learning tools are very useful for studying large star-forming complexes.
Swagat R. Das +4 more
doaj +1 more source
Do O-stars form in isolation? [PDF]
, 2007 Around 4% of O-stars are observed in apparent isolation, with no associated cluster, and no indication of having been ejected from a nearby cluster. We define an isolated O-star as a star > 17.5 M_\odot in a cluster with total mass 10 M_\odot) stars.
Bastian +25 more
core +3 more sources
Odessa Astronomical Publications, 2017 Analysis of the absolute uvby photometry of the Open Clusters NGC 6910 and NGC 6913 show well-defined peaks that clearly define the accumulation of stars. Differential photometry of five stars in the direction of each cluster determines that at least two
J. H. Pena +5 more
doaj +1 more source