564 citations
- National Academy of Sciences of UkraineUA8 papers
- University of VirginiaUS3 papers
- Crimean Astrophysical ObservatoryUA2 papers
- Instituto de Astrofísica de CanariasES2 papers
- Laboratoire Univers et ThéoriesFR2 papers
- Special Astrophysical ObservatoryRU2 papers
- Astronomical ObservatoryRS1 paper
- Astrophysique, Instrumentation et ModélisationFR1 paper
- Australian National UniversityAU1 paper
- Carnegie Institution for ScienceUS1 paper
- CEA Paris-SaclayFR1 paper
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1 paper
Showing 2007 · astro-phShow all
3 papers · 2 filters
astro-ph2007★ 24 cited
New Probable Dwarf Galaxies in Northern Groups of the Local Supercluster
I. D. Karachentsev, V. E. Karachentseva, W. K. Huchtmeier
We have searched for nearby dwarf galaxies in 27 northern groups with characteristic distances 8-15 Mpc based on the Second Palomar Sky Survey prints. In a total area of about 2000…
astro-ph2007★ 212 cited
The primordial abundance of 4He: a self-consistent empirical analysis of systematic effects in a large sample of low-metallicity HII regions
Y. I. Izotov, T. X. Thuan, G. Stasinska
We determine the primordial helium mass fraction Yp using 93 spectra of 86 low-metallicity extragalactic HII regions. This sample constitutes the largest and most homogeneous high-…
astro-ph2007★ 78 cited
On the maximum value of the cosmic abundance of oxygen and the oxygen yield
L. S. Pilyugin, T. X. Thuan, J. M. Vilchez
We search for the maximum oxygen abundance in spiral galaxies. Because this maximum value is expected to occur in the centers of the most luminous galaxies, we have constructed the…