Results 181 to 190 of about 34,781 (306)

Are Local Group Dwarf Spheroidal Galaxies the First Safe Planet-hosting Environments?

The Astrophysical Journal
We explore whether Local Group dwarf spheroidal (dSph) galaxies might have hosted Earth-like planets dwelling unexposed for several billions of years to major galactic threats to life, such as supernovae and gamma-ray bursts.
Stefano Ciabattini, Stefania Salvadori, Leonardo Testi   +2 more
doaj   +1 more source

Exploring direct detection suppressed regions in a simple 2-scalar mediator model of scalar dark matter. [PDF]

Eur Phys J C Part Fields, 2021
Claude J, Godfrey S.
europepmc   +1 more source

Evaluating the Potential to Constrain Dark Matter Annihilation with Fermi-LAT Observations of Ultrafaint Compact Stellar Systems

The Astrophysical Journal Letters
Recent results from numerical simulations and models of galaxy formation suggest that recently discovered ultrafaint compact stellar systems (UFCSs) in the halo of the Milky Way (MW) may be some of the smallest and faintest galaxies. If this is the case,
Antonio Circiello, Alex McDaniel, Alex Drlica-Wagner, Christopher Karwin, Marco Ajello, Mattia Di Mauro, Miguel Á. Sánchez-Conde   +6 more
doaj   +1 more source

Environmental Mechanisms Shaping the Nature of Dwarf Spheroidal Galaxies: The View of Computer Simulations

Advances in Astronomy, 2010
We review numerical works carried out over the last decade on the role of environmental mechanisms in shaping nature of the faintest galaxies known, dwarf spheroidals (dSphs). The combination of tidally induced morphological transformation, termed tidal
Lucio Mayer
doaj   +1 more source

Chemical feature of Eu abundance in the Draco dwarf spheroidal galaxy [PDF]

, 2015
Takuji Tsujimoto, Miho N. Ishigaki, Toshikazu Shigeyama, Wako Aoki   +3 more
openalex   +1 more source

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 is estimated to be E(V-I) = 0.08 +- 0.02 mag.
openaire   +2 more sources

Improving the sensitivity of gamma-ray telescopes to dark matter annihilation in dwarf spheroidal galaxies [PDF]

, 2015
E. M. Carlson, Dan Hooper, Tim Linden
openalex   +1 more source

The distance to the Fornax Dwarf Spheroidal Galaxy

, 2007
Accepted for publication on Monthly Notices of the Royal Astronomical ...
Rizzi, L., Held, E. V., Saviane, I., Tully, R. B., Gullieuszik, M.   +4 more
openaire   +2 more sources

The early days of the Sculptor dwarf spheroidal galaxy [PDF]

, 2015
P. Jablonka, P. North, L. Mashonkina, V. Hill, Yves Revaz, Matthew Shetrone, Else Starkenburg, M. J. Irwin, Eline Tolstoy, G. Battaglia, Kim A. Venn, A. Helmi, F. Primas, P. François   +13 more
openalex   +1 more source

A Census of Dwarf Galaxy Satellites around LMC-mass Galaxy NGC 2403

The Astrophysical Journal
We present the first comprehensive census of the satellite population around a Large Magellanic Cloud stellar-mass galaxy, as part of the Magellanic Analog Dwarf Companions and Stellar Halos (MADCASH) survey. We have surveyed NGC 2403 ( D = 3.0 Mpc) with
Jeffrey L. Carlin, David J. Sand, Burçin Mutlu-Pakdil, Denija Crnojević, Amandine Doliva-Dolinsky, Christopher T. Garling, Annika H. G. Peter, Jean P. Brodie, Duncan A. Forbes, Jonathan R. Hargis, Aaron J. Romanowsky, Kristine Spekkens, Jay Strader, Beth Willman   +13 more
doaj   +1 more source