Published January 1, 1989 | Version v1
Journal article Metadata-only

An evolutionary model of star formation for elliptical galaxies

Creators

  • 1. Paris-11 Univ., 91 - Orsay (France). Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse
  • 2. Centre National de la Recherche Scientifique, 75 - Paris (France). Inst. d'Astrophysique

Description

An evolutionary model of an elliptical galaxy with a continuous efficient star-formation rate depending on the gas density appears to explain the strong ultraviolet (UV) excess of two elliptical galaxies, NGC4486 (M87) and NGC4649, in the Virgo Cluster. The initial mass function is standard. The synthetic spectrum fits the far-UV to visible spectra of galaxies at age 13 Gyr. The present star formation rate is calculated, and shown to be compatible with the mass deposition rate in the inner parts of galaxies, estimated from cooling-flows detected by X-rays with the Einstein Observatory HRI. (author)

Additional details

Publishing Information

Journal Title
Monthly Notices of the Royal Astronomical Society
Journal Volume
236
Journal Issue
1
Series
Mon. Not. R. Astron. Soc.
Journal Page Range
47-56
ISSN
0035-8711
CODEN
MNRAA

INIS

Country of Publication
United Kingdom
Country of Input or Organization
United Kingdom
INIS RN
20031713
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
COSMIC GASES; COSMOLOGICAL MODELS; DENSITY; ELLIPTICAL CONFIGURATION; GALAXIES; LYMAN LINES; STAR EVOLUTION; STARS; THEORETICAL DATA; TIME DEPENDENCE; ULTRAVIOLET SPECTRA; VISIBLE SPECTRA
Descriptors DEC
CONFIGURATION; DATA; FLUIDS; GASES; INFORMATION; MATHEMATICAL MODELS; NUMERICAL DATA; PHYSICAL PROPERTIES; SPECTRA