Results 191 to 200 of about 1,735 (217)

The dynamical and chemical evolution of dwarf spheroidal galaxies [PDF]

Astronomy and Astrophysics, 2009
21 Pages, 19 figures ; Accepted for publication in A&A.
E Tolstoy, M D Shetrone
exaly   +6 more sources

Some of the next articles are maybe not open access.

Related searches:

Searches for dwarf spheroidal galaxies

Astrophysics, 1975
1. Dwarf spheroidal galaxies are encountered, it would seem, more often than previously assumed [9]. 2. The tendency for them to be concentrated around galaxies of high luminosities [8, 9] is not very pronounced. 3. The distribution of Sculptor type dwarfs in the space we studied is not uniform.
openaire   +1 more source

On the Formation of Dwarf Spheroidal Galaxies

Publications of the Astronomical Society of Japan, 1979
Abstract In order to explain why the mass density of dwarf spheroidal galaxies is so low, the following hypothesis is proposed: dwarf spheroidals were born as dense systems but afterward they have expanded due to the supernova-driven gas ejection.
openaire   +1 more source

Dwarf Spheroidal Galaxies

1992
The properties of dwarf spheroidals are reviewed with emphasis on the newly discovered Sextans system, as well as on the star formation histories, the dark matter content and the abundance — luminosity relation of these galaxies. The relation of dwarf spheroidals to other dwarf galaxies is also discussed.
openaire   +1 more source

Planetary Nebulae in the Sagittarius Dwarf Spheroidal Galaxy

2006
The Sagittarius dwarf galaxy (Sgr) is a satellite of the Galaxy, located behind the Galactic Bulge. It is the nearest extra-galactic system, at a distance of 25 kpc. Sgr contains three known planetary nebulae (PNe) (two from Zijlstra & Walsh 1996, and one new identification).
Zijlstra, Albert A.; id_orcid 0000-0002-3171-5469, Gesicki, Krzysztof, Walsh, Jeremy, Péquignot, Daniel   +3 more
openaire   +2 more sources

Inhomogeneous chemical evolution of dwarf spheroidal galaxies

Astrophysics and Space Science, 2003
Stellar abundance pattern of n-capture elements such as barium is used as a powerful tool to infer how the star formation proceeded in dwarf spheroidal (dSph) galaxies. It is found that the abundance correlation of barium with iron in stars belonging to dSph galaxies orbiting the Milky Way, i.e., Draco, Sextans, and Ursa Minor have a feature similar to
Takuji Tsujimoto, Toshikazu Shigeyama
openaire   +1 more source

A formation scenario of dwarf spheroidal galaxies

Astrophysics and Space Science, 2008
In this paper, the author proposes a formation scenario of dwarf spheroidal galaxies (dSphs); part of dSphs form as a result of collision of dark matter (DM) halos which retain ISM (interstellar medium). First of all, a primordial dSph forms compact when collision of DM halos occurs.
openaire   +1 more source

On Dark Matter in Dwarf Spheroidal Galaxies

EAS Publications Series, 2011
The small (L V ≤ 107 L V ,⊙ ) baryonic components of the Milky Way’s dwarf spheroidal (dSph) satellites contribute small “backgrounds” with regards to estimates of dSph dark matter density profiles and any related predictions of dark matter decay/annihilation signals. As dSphs gain attention from a broad range of physicists interested in dark matter,
openaire   +1 more source

Combined searches for dark matter in dwarf spheroidal galaxies observed with the MAGIC telescopes, including new data from Coma Berenices and Draco

Physics of the Dark Universe, 2022
Francesco Dazzi, Andrea Rugliancich, Elena Moretti   +2 more
exaly  

Spatial segregation impact on star formation in nearby dwarf spheroidal galaxies

Monthly Notices of the Royal Astronomical Society, 2021
Dmitry Makarov, Lidia Makarova, Makarov D I   +2 more
exaly