Results 11 to 20 of about 159,319 (262)
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. +9 more
core +7 more sources
The effect of gravitational tides on dwarf spheroidal galaxies [PDF]
Astronomy & Astrophysics, 2014 The effect of the local environment on the evolution of dwarf spheroidal galaxies is poorly understood. We have undertaken a suite of simulations to investigate the tidal impact of the Milky Way on the chemodynamical evolution of dwarf spheroidals that resemble present day classical dwarfs using the SPH code GEAR.
Pascale Jablonka +3 more
arxiv +8 more sources
The Andromeda Dwarf Spheroidal Galaxies [PDF]
Symposium - International Astronomical Union, 1999 Our current knowledge of M31's dwarf spheroidal companions is reviewed. Two topics of recent interest constitute the bulk of this review. First, color-magnitude diagrams reaching below the horizontal branch have been constructed for two M31 dwarf spheroidals, based on images from HST/WFPC2. The horizontal branches are predominantly red in both galaxies,
T. E. Armandroff, G. S. Da Costa
openalex +4 more sources
The Progenitors of Dwarf Spheroidal Galaxies [PDF]
The Astronomical Journal, 2003 Dwarf spheroidal (dSph) galaxies present an evolutionary puzzle that we explore in 40 early- and late-type dwarfs in the Local Group and nearby field. Although dSphs formed stars over extended periods, today all but one are free of detectable interstellar matter (ISM), even in the Fornax dSph, where stars still formed 100 Myr ago.
E. K. Grebel +2 more
openalex +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 giant branch in a field situated near its southern edge.
C. Alard
openalex +8 more sources
Manganese in dwarf spheroidal galaxies [PDF]
Astronomy & Astrophysics, 2012 19 pages, 10 figures, accepted for publication in Astronomy & ...
Mike Irwin +14 more
openaire +7 more sources
Supernova Enrichment of Dwarf Spheroidal Galaxies [PDF]
The Astrophysical Journal, 2003 29 pages, 10 figures, to appear in Astrophysical ...
P. Chris Fragile +3 more
openalex +5 more sources
The quest for dark matter in dwarf spheroidal galaxies with the Cherenkov Telescope Array [PDF]
EPJ Web of Conferences, 2019 Dwarf spheroidal galaxies are among the best environments that can be studied with Cherenkov telescopes for indirect searches of γ-ray signals coming from dark matter self-interaction (annihilation or decay), due to their proximity and negligible ...
Saturni Francesco G. +2 more
doaj +1 more source
Dwarf Spheroidal Galaxies in the Virgo Cluster [PDF]
The Astrophysical Journal, 1998 We present a study of the smallest and faintest galaxies found in a very deep photographic R band survey of regions of the Virgo Cluster, totalling over 3 square degrees, made with the UK Schmidt Telescope. The objects we detect have the same physical sizes and surface brightnesses as Local Group dwarf spheroidal galaxies.
Jones, JB +3 more
openaire +6 more sources
Life and times of dwarf spheroidal galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 12 pages, 6 figures, MNRAS ...
SALVADORI, STEFANIA +2 more
openaire +5 more sources