Results 31 to 40 of about 10,967 (146)

UGC 7639: A Dwarf Galaxy in the Canes Venatici I Cloud

Advances in Astronomy, Volume 2015, Issue 1, 2015., 2015
We want to get insight into the formation mechanism and the evolution of UGC 7639, a dwarf galaxy in the Canes Venatici I Cloud (CVnIC). We used archival multiwavelength data to constrain its global properties. Ultraviolet images show that UGC 7639 inner regions are composed mostly by young stellar populations.
L. M. Buson, D. Bettoni, P. Mazzei, G. Galletta, Duncan Forbes   +4 more
wiley   +1 more source

Kinematic subpopulations in dwarf spheroidal galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
Submitted to ...
S. Vidrih, Timothy C. Beers, Gerard Gilmore, Mark I. Wilkinson, Vasily Belokurov, Daniel B. Zucker, Eva K. Grebel, Ugur Ural, N. Wyn Evans, Andreas Koch, Andreas Koch   +10 more
openaire   +5 more sources

Improved Searches for HI in Three Dwarf Spheroidal Galaxies [PDF]

, 1999
Previous searches for HI in our Galaxy's dwarf spheroidal companions have not been complete enough to settle the question of whether or not these galaxies have HI, especially in their outer parts.
Hargreaves J. C., Huchtmeier W. K., Irwin M. J., Kalberla P. M. W., Koribalski B., L. M. Young, Staveley-Smith L.   +6 more
core   +3 more sources

Chemical and Photometric Evolution Models for Disk, Irregular, and Low Mass Galaxies

Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014
We summarize the updated set of multiphase chemical evolution models performed with 44 theoretical radial mass initial distributions and 10 possible values of efficiencies to form molecular clouds and stars. We present the results about the infall rate histories, the formation of the disk, and the evolution of the radial distributions of diffuse and ...
Mercedes Mollá, Jorge Iglesias Páramo
wiley   +1 more source

The distance to the Fornax dwarf spheroidal galaxy★ [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
Accepted for publication on Monthly Notices of the Royal Astronomical ...
Luca Rizzi, R. B. Tully, Ivo Saviane, E. V. Held, Marco Gullieuszik, Marco Gullieuszik   +5 more
openaire   +4 more sources

Chemical Composition of Extremely Metal-Poor Stars in the Sextans Dwarf Spheroidal Galaxy [PDF]

, 2009
Chemical abundances of six extremely metal-poor ([Fe/H]
Aoki, W., Arimoto, N., Babusiaux, C., Battaglia, G., Francois, P., Helmi, A., Hill, V., Irwin, M., Jablonka, P., Kaufer, A., Letarte, B., Primas, F., Sadakane, K., Shetrone, M., Szeifert, T., Tafelmeyer, M., Tolstoy, E., Venn, K.   +17 more
core   +5 more sources

Chemodynamical Simulations of Dwarf Galaxy Evolution

Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014
In this review I give a summary of the state of the art for what concerns the chemo‐dynamical numerical modelling of galaxies in general and of dwarf galaxies in particular. In particular, I focus my attention on (i) initial conditions, (ii) the equations to solve; (iii) the star formation process in galaxies, (iv) the initial mass function, (v) the ...
Simone Recchi, José Manuel Vílchez Medina   +1 more
wiley   +1 more source

Blue straggler stars in dwarf spheroidal galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
Blue straggler star (BSS) candidates have been observed in all old dwarf spheroidal galaxies (dSphs), however whether or not they are authentic BSSs or young stars has been a point of debate. To both address this issue and obtain a better understanding of the formation of BSSs in different environments we have analysed a sample of BSS candidates in two
Mapelli, M., Ripamonti, E., Tolstoy, E., Sigurdsson, S., Irwin, M. J., Battaglia, G.   +5 more
openaire   +4 more sources

Luminosity-Diameter Relations for Globular Clusters and Dwarf Spheroidal Galaxies

, 2008
It is shown that globular clusters and the dwarf spheroidal companions of the Galaxy have a different distribution of flattening values, and appear to occupy adjacent regions of the M_v versus log R_h plane that can be separated by what will be referred ...
Belokurov, Kauffmann, Klypin, Mackey, Mackey, Martin, McLaughlin, Moore, Shapley, Shapley, Shapley, Shapley, Shapley, Sidney van den Bergh, Stonkuté, van den Bergh, van den Bergh   +16 more
core   +1 more source

The Sensitivity of the IceCube Neutrino Detector to Dark Matter Annihilating in Dwarf Galaxies [PDF]

, 2010
In this paper, we compare the relative sensitivities of gamma-ray and neutrino observations to the dark matter annihilation cross section in leptophilic models such as have been designed to explain PAMELA data.
C. M. Hui, Dan Hooper, Douglas Spolyar, Katherine Freese, Matthew Buckley, Pearl Sandick, S. Coutu   +6 more
core   +3 more sources