Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....114.2497v&link_type=abstract
Astronomical Journal v.114, p.2497
Astronomy and Astrophysics
Astronomy
60
Stars: Formation, Galaxies: Peculiar, Galaxies: Stellar Content, Galaxies: Abundances
Scientific paper
The results of evolutionary studies of 15 gas-rich, low surface brightness dwarf galaxies (LSBDGs) are presented. The LSBDGs are distinguished by high values of hydrogen-mass-to-optical-luminosity and the presence of extended H I envelopes. While these properties suggest a relatively inefficient star formation history, these objects are not "young" systems. Based on UBVR colors, the dominant stellar populations are at least 2-4 Gyr old. The derived oxygen abundances are low and are in agreement with the previously known metallicity-luminosity relation for low mass objects. Similar to other studies of relative enrichments of heavy elements in low mass systems, the observed N/O ratio suggests a primary origin of nitrogen in low abundance systems. While outflow or inflow of gas cannot be ruled out (particularly in such gas-rich systems), closed box estimates with normal nucleosynthetic yields are consistent with the observed metallicities.
Haynes Martha P.
Salzer John Joseph
van Zee Liese
No associations
LandOfFree
Element Enrichment and Stellar Populations O Gas-Rich Low Surface Brightness Dwarf Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Element Enrichment and Stellar Populations O Gas-Rich Low Surface Brightness Dwarf Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Element Enrichment and Stellar Populations O Gas-Rich Low Surface Brightness Dwarf Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1178755