Results 31 to 40 of about 3,405,157 (289)

A two-step initial mass function: [PDF]

Astronomy & Astrophysics, 2001
If stars originate in transient bound clusters of moderate size, these clusters will decay due to dynamic interactions in which a hard binary forms and ejects most or all the other stars. When the cluster members are chosen at random from a reasonable initial mass function (IMF), the resulting binary characteristics do not match current observations ...
R. H. Durisen, M. F. Sterzik, B. K. Pickett   +2 more
openaire   +1 more source

The stellar initial mass function [PDF]

Proceedings of the International Astronomical Union, 2006
Abstract The IMF UNIVERSALITY HYPOTHESIS cannot be discarded despite the existence of the CLUSTER IMF THEOREM. This means that the currently existing star-formation theory fails to describe the stellar outcome. The IGIMF THEOREM, however, predicts a variation of galaxy-wide IMFs in dependence of the galaxy's star-formation rate even if the IMF ...
openaire   +1 more source

The Initial Mass Function as given by the fragmentation [PDF]

, 2005
The dichotomy between a universal mass function (IMF) and a variable IMF which depends on local physical parameters characterises observational and theoretical stellar astronomy. In this contribution the available distributions of probability are briefly
Barrado y Navascués, Bate, Binney, Bouvier, Briceño, Chabrier, Deeming, Drilling, Elmegreen, Elmegreen, Elmegreen, Evans, Hillenbrand, Hsu, Kiang, Kiang, Kroupa, Kroupa, Kroupa, L., Lang, Larson, Luhman, Luhman, Luhman, Meusinger, Moraux, Muench, Muench, Preibisch, Reed, Salpeter, Scalo, Sekiguchi, Shadmehri, W. H., Walker   +36 more
core   +1 more source

On the Initial Mass Function of Population III Stars [PDF]

, 2000
The collapse and fragmentation of filamentary primordial gas clouds are explored using 1D and 2D hydrodynamical simulations coupled with the nonequilibrium processes of H2 formation.
Alcock C., Carlberg R. G., Castor J. I., Couchman H. M. P., Fukugita M., Fumitaka Nakamura, Galli D., Heavens A., Hollenback D., Larson R. B., Lasserre T., Masayuki Umemura, Nakamura F., Portinari L., Silk J., Stodolkiewicz J. S., Sunyaev R. A., Valageas P., Yoneyama T., Zeldovich Ya. B.   +19 more
core   +2 more sources

The low-mass Initial Mass Function in the young cluster NGC 6611 [PDF]

, 2008
NGC 6611 is the massive young cluster (2-3 Myr) that ionises the Eagle Nebula. We present very deep photometric observations of the central region of NGC 6611 obtained with the Hubble Space Telescope and the following filters: ACS/WFC F775W and F850LP ...
Jeffries, R. D., Oliveira, J. M., van Loon, J. Th.   +2 more
core   +2 more sources

The initial mass function in clusters [PDF]

, 2009
to be published in "Massive Stars: From Pop III and GRBs to the Milky Way," eds. M. Livio and Eva Villaver, Cambridge Univ. Press, in press, from a conference held at the Space Telescope Science Institute, May 8-11, 2006.
openaire   +2 more sources

Faint Stars in a Faint Galaxy. II. The Low-mass Stellar Initial Mass Function of the Boötes I Ultrafaint Dwarf Spheroidal Galaxy

The Astrophysical Journal, 2022
This paper presents improved constraints on the low-mass stellar initial mass function (IMF) of the Boötes I (Boo I) ultrafaint dwarf galaxy, based on our analysis of recent deep imaging from the Hubble Space Telescope.
Carrie Filion, Imants Platais, Rosemary F. G. Wyse, Vera Kozhurina-Platais   +3 more
doaj   +1 more source

Feedback and the Initial Mass Function [PDF]

, 2007
To appear in IMF@50: The Stellar Initial Mass Function Fifty Years Later, eds E. Corbelli, F. Palla, and H. Zinnecker, held at Abbazia di Spineto, Siena, Italy, May 2004, to be published by Kluwer Acad emic Publishers, Astrophysics and Space Science Library; and in The Young Local Universe, eds. A. Chalabaev, Y. Fukui and T.
openaire   +2 more sources

Substellar initial mass function of Trumpler 14

Astronomy & Astrophysics
Context. Young, massive stellar clusters offer a prime setting to explore brown dwarf (BD) formation under high densities and intense UV radiation. Trumpler 14 (Tr 14), a ∼1 Myr old cluster located at a distance of 2.4 kpc that is particularly rich in O ...
Rom T., Moraux E., Mužić K., Andersen M., Schirmer M., Almendros-Abad V.   +5 more
doaj   +1 more source

Isothermal Fragmentation: Is there a low-mass cut-off? [PDF]

, 2018
The evolution of self-gravitating clouds of isothermal gas forms the basis of many star formation theories. Therefore it is important to know under what conditions such a cloud will undergo homologous collapse into a single, massive object, or will ...
Federrath, Christoph, Grudic, Michael Y., Guszejnov, David, Hopkins, Philip F., Krumholz, Mark R.   +4 more
core   +4 more sources