منابع مشابه
Uv Excess Galaxies: Wolf-rayet Galaxies
We discuss V and R band photometry for 67% of the Sullivan et al. (2000) SA57 ultraviolet-selected galaxy sample. In a sample of 176 UV-selected galaxies, Sullivan et al. (2000) find that 24% have (UV-B) colors too blue for consistency with starburst spectral synthesis models. We propose that these extreme blue, UV excess galaxies are Wolf-Rayet (WR) galaxies, starburst galaxies with strong UV ...
متن کاملUV Properties of Primeval Galaxies
The problem of UV properties of primeval galaxies is briefly assessed from the theoretical point of view discussing its impact on the definition of the cosmological model.
متن کاملThe Uv Emission of Elliptical Galaxies
Observational as well as theoretical developments subsequent to 1990 concerning the origin of the ultraviolet emission of elliptical galaxies are reviewed and discussed. In particular, successes and failures of an extensive set of predictions contained in Greggio & Renzini (1990) are discussed in the light of these development. Strong support to the preferred hot horizontal branch and AGB–manqu...
متن کاملUV Upturn in Elliptical Galaxies: Theory
I review the current theoretical understanding on the UV upturn phenomenon in early-type galaxies.
متن کاملFar-UV Line Strengths in Elliptical Galaxies
Much of the far-UV emission from elliptical galaxies is thought to arise from extreme horizontal branch stars and related objects. Only about 10% of the stellar population needs to evolve through this phase even in galaxies with the strongest UV upturn. However it is not yet clear if this population represents the extreme low-metallicity or highmetallicty tail of the distribution, or rather ari...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1987
ISSN: 0074-1809
DOI: 10.1017/s0074180900154920