The evolutionary history of low-luminosity local group dwarf galaxies
1994; IOP Publishing; Volume: 428; Linguagem: Inglês
10.1086/174270
ISSN1538-4357
Autores Tópico(s)Galaxies: Formation, Evolution, Phenomena
Resumoview Abstract Citations (115) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Evolutionary History of Low-Luminosity Local Group Dwarf Galaxies van den Bergh, Sidney Abstract The stellar content of Local Group dwarfs fainter than M_v_ = - 14.0 is found to correlate with distance from the Galaxy (or M31). Dwarf spheroidals located close to the Galaxy, such as Ursa Minor and Draco, only experienced star formation early in their lifetimes. Dwarf spheroidals at intermediate distances, like Leo I, Fornax, and Carina, underwent significant star formation more recently. Finally, star formation is presently still going on in distant dwarfs such as DDO 210 and Phoenix. Leo II and Tucana are, however, dwarfs that do not conform to this pattern. It is tentatively suggested that ram pressure stripping, strong supernova-driven winds, or a high UV flux form the protoGalaxy (or proto- M31) might have removed gas from dwarf galaxies at small galactocentric distances. Publication: The Astrophysical Journal Pub Date: June 1994 DOI: 10.1086/174270 Bibcode: 1994ApJ...428..617V Keywords: Distance; Dwarf Galaxies; Galactic Evolution; Local Group (Astronomy); Populations; Star Formation; Time Dependence; Coronas; Peeling; Rams (Presses); Rates (Per Time); Stellar Winds; Suggestion; Astrophysics; GALAXIES: EVOLUTION; GALAXIES: STELLAR CONTENT; GALAXIES: LOCAL GROUP full text sources ADS | data products SIMBAD (15) NED (12)
Referência(s)