other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
2006MNRAS.373..715M - Mon. Not. R. Astron. Soc., 373, 715-728 (2006/December-1)
The stellar content of the isolated transition dwarf galaxy DDO210.
McCONNACHIE A.W., ARIMOTO N., IRWIN M. and TOLSTOY E.
Abstract (from CDS):
Most of the stars in DDO210 are found in a red clump, and its mean I-band magnitude suggests that the majority of stars in DDO210 have an average age of 4+2–1Gyr. Given this age, the colour of the RGB implies a mean metallicity of [Fe/H] ≃ -1.3. By comparing the shape of the red clump with models for a variety of star formation histories, we estimate that an old (>10 Gyr) stellar population can contribute ∼20-30 per cent of the stars in DDO210 at most. The unusual star formation history of DDO210, its low-mass estimate and its isolated nature, provide insight into how star formation proceeds in the lowest mass, unperturbed, dwarf galaxy haloes.
Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS
Journal keyword(s): galaxies: dwarf - galaxies: individual: DDO 210/Aquarius - Local Group - galaxies: stellar content - galaxies: structure
Simbad objects: 9
To bookmark this query, right click on this link: simbad:2006MNRAS.373..715M and select 'bookmark this link' or equivalent in the popup menu