publication . Article . Preprint . 2014

formation of dwarf ellipticals and dwarf irregular galaxies by interaction of giant galaxies under environmental influence

Chattopadhyay, Tanuka; Debsarma, Suma; Karmakar, Pradip; Davoust, Emmanuel;
Open Access
  • Published: 07 Mar 2014 Journal: New Astronomy, volume 34, pages 151-158 (issn: 1384-1076, Copyright policy)
  • Publisher: Elsevier BV
Abstract
A model is proposed for the formation of gas-rich dwarf irregular galaxies and gas-poor, rotating dwarf elliptical galaxies following the interaction between two giant galaxies as a function of space density. The formation of dwarf galaxies is considered to depend on a random variable, the tidal index theta, an environmental parameter defined by Karachentsev et al. (2004), such that for theta less than zero, the formation of dwarf irregular galaxy is assured whereas for theta greater than zero, the formation of dwarf ellipticals is preferred. It is found that for particular ranges of the interactive parameters the model predictions are in good agreement with the...
Subjects
arXiv: Astrophysics::Galaxy AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Earth and Planetary AstrophysicsAstrophysics::Solar and Stellar Astrophysics
free text keywords: Space and Planetary Science, Instrumentation, Astronomy and Astrophysics, Milky Way, Astrophysics, Dwarf spheroidal galaxy, Physics, Dwarf galaxy, Lenticular galaxy, Interacting galaxy, Elliptical galaxy, Dwarf galaxy problem, Blue dwarf, Astronomy, Astrophysics - Astrophysics of Galaxies, 85
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publication . Article . Preprint . 2014

formation of dwarf ellipticals and dwarf irregular galaxies by interaction of giant galaxies under environmental influence

Chattopadhyay, Tanuka; Debsarma, Suma; Karmakar, Pradip; Davoust, Emmanuel;