Results 1 to 10 of about 11,526 (197)

Dwarf Cepheids in the Carina Dwarf Spheroidal Galaxy [PDF]

The Astronomical Journal, 1998
We have discovered 20 dwarf Cepheids (DC) in the Carina dSph galaxy from the analysis of individual CCD images obtained for a deep photometric study of the system.
Arnold R., Bertelli G., Cannon R. D., Denise Hurley-Keller, Dworetsky M. M., James Nemec, Lynden-Bell D., Mario Mateo, Mighell K. J., Smecker-Hane T. A.   +9 more
core   +5 more sources

Dwarf spheroidal galaxies: Keystones of galaxy evolution [PDF]

Publications of the Astronomical Society of the Pacific, 1994
Dwarf spheroidal galaxies are the most insignificant extragalactic stellar systems in terms of their visibility, but potentially very significant in terms of their role in the formation and evolution of much more luminous galaxies. We discuss the present observational data and their implications for theories of the formation and evolution of both dwarf
Iii Gallagher John S, Rosemary F G Wyse
exaly   +3 more sources

The Dynamical and Chemical Evolution of Dwarf Spheroidal Galaxies [PDF]

Astronomy & Astrophysics, 2009
We present a large sample of fully self-consistent hydrodynamical Nbody/Tree-SPH simulations of isolated dwarf spheroidal galaxies (dSphs). It has enabled us to identify the key physical parameters and mechanisms at the origin of the observed variety in ...
A. Helmi, Alimi, B. Letarte, Babusiaux, Barkana, Barnes, Battaglia, Battaglia, Battaglia, Blais-Ouellette, Bosler, Bullock, Carraro, Coleman, de Blok, de Blok, de Blok, Dekel, Dolphin, E. Tolstoy, Efstathiou, Ferrara, Fukushige, G. Battaglia, Gallagher, Galli, Geisler, Gentile, Gentile, Gilmore, Gingold, Harbeck, Helmi, Hensler, Hernquist, Hernquist, Hurley-Keller, Ikuta, Irwin, K. A. Venn, Katz, Katz, Kawata, Kirby, Kleyna, Kobayashi, Koch, Koch, Kodama, Kroupa, Lanfranchi, Lee, Leitherer, Lucy, M. D. Shetrone, M. Irwin, Mac Low, Maio, Maraston, Maraston, Marcolini, Marcolini, Martin, Mateo, Mayer, Mighell, Monaghan, Moore, Mori, Mori, Murakami, Muñoz, Navarro, P. Jablonka, Peñarrubia, Poirier, Poirier, Read, Ricotti, Salpeter, Salvadori, Schmidt, Serna, Shetrone, Shetrone, Shetrone, Shetrone, Spano, Spekkens, Springel, Stinson, Stinson, Strigari, Sutherland, Swaters, T. Sawala, Tinsley, Tolstoy, Tolstoy, Tsujimoto, V. Hill, Valcke, Walker, Walker, Walker, Wise, Y. Revaz   +106 more
core   +10 more sources

WFPC2 Observations of the Carina Dwarf Spheroidal Galaxy

The Astronomical Journal, 1997
We present our analysis of Hubble Space Telescope Wide Field Planetary Camera 2 observations in F555W (~V) and F814W (~I) of the Carina dwarf spheroidal galaxy. The resulting V vs (V-I) color-magnitude diagrams reach V ~ 27.1 mag. The reddening of Carina
Mighell, Kenneth J.
core   +5 more sources

Metallicity gradients in the Sagittarius dwarf spheroidal Galaxy [PDF]

Astronomy & Astrophysics, 2001
Metallicity gradients in the Sagittarius dwarf Galaxy (Sgr) are investigated by using infrared photometric data from the 2MASS survey. To search for metallicity effects, the giant branch in a field situated near the Center of the Sgr is compared to the ...
Alard, Bellazzini, Bertelli, Bonifacio, Brown, Buser, C. Alard, Ceresjnes, Da Costa, Dudziak, Girardi, Helmi, Hurley-Keller, Ibata, Ibata, Kuchinski, Layden   +16 more
core   +8 more sources

Sulphur in the Sculptor dwarf spheroidal galaxy [PDF]

Astronomy and Astrophysics, 2015
9 pages, 11 figures, 2 tables + 3 online tables, accepted in A& ...
A Skuladottir, S M Andrievsky, E Tolstoy   +2 more
exaly   +4 more sources

The distance to the Fornax dwarf spheroidal galaxy★

Monthly Notices of the Royal Astronomical Society, 2007
Accepted for publication on Monthly Notices of the Royal Astronomical ...
L Rizzi, E V Held, I Saviane
exaly   +3 more sources

Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers [PDF]

Serbian Astronomical Journal, 2022
Stellar streams and shells are observed in halos of spiral galaxies. In this paper, we investigated the formation of these structures due to mergers between the host spiral galaxy and its dwarf satellite galaxies.
Milošević S.
doaj   +1 more source

Searching for light in the darkness: Bounds on ALP dark matter with the optical MUSE-faint survey

Physics Letters B, 2021
We use MUSE spectroscopic observations of the dwarf spheroidal galaxy Leo T between 470 and 935 nm to search for radiative decays of axion like particles (ALPs).
Marco Regis, Marco Taoso, Daniel Vaz, Jarle Brinchmann, Sebastiaan L. Zoutendijk, Nicolas F. Bouché, Matthias Steinmetz   +6 more
doaj   +1 more source

Dwarfs in Void Environments (DIVE): The Stellar Kinematics of Void Dwarf Galaxies Using the Keck Cosmic Web Imager

The Astrophysical Journal, 2023
Dwarf galaxies located in extremely underdense cosmic voids are excellent test beds for disentangling the effects of large-scale environments on galaxy formation and evolution. We present the first results of the Dwarfs in Void Environments Survey, which
Mithi A. C. de los Reyes, Evan N. Kirby, Zhuyun Zhuang, Charles C. Steidel, Yuguang Chen, Coral Wheeler   +5 more
doaj   +1 more source