Results 51 to 60 of about 212,400 (210)
Near IR imaging of Centaurus group dwarf elliptical galaxies
, 2016 Detailed studies of dwarf galaxies in the Local Group have revealed an amazing diversity in their star formation histories. Young and intermediate-age stellar populations are observed in some gas-poor dwarf ellipticals, like Fornax and Carina, where ...
Zoccali, M +4 more
core +1 more source
The Astrophysical JournalA fundamental question regarding the evolution of dwarf spheroidal galaxies is the identification of the key physical mechanisms responsible for gas depletion.
Roberto Hazenfratz +3 more
doaj +1 more source
Intermediate Mass Black Holes: Their Motion and Associated Energetics
Advances in High Energy Physics, Volume 2014, Issue 1, 2014., 2014 There is a lot of current astrophysical evidence and interest in intermediate mass black holes (IMBH), ranging from a few hundred to several thousand solar masses. The active galaxy M82 and the globular cluster G1 in M31, for example, are known to host such objects.
C. Sivaram, Kenath Arun, Christian Corda
wiley +1 more source
The Astrophysical JournalThe metallicity distribution function (MDF) and internal chemical variations of a galaxy are fundamental to understand its formation and assembly history.
F. O. Barbosa +29 more
doaj +1 more source
Cored galaxies in cuspy dark matter halos
Astronomy & AstrophysicsAims. We investigate the constraints placed on the inner stellar density profile from the photometric data of dwarf spheroidal and ultra-faint dwarf galaxies.
Valenciano Fernando +6 more
doaj +1 more source
The Mitchell Spectrograph: Studying Nearby Galaxies with the VIRUS Prototype
Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013 The Mitchell Spectrograph (a.k.a. VIRUS‐P) on the 2.7 m Harlan J. Smith telescope at McDonald Observatory is currently the largest field of view (FOV) integral field unit (IFU) spectrograph in the world (1.7′ × 1.7′). It was designed as a prototype for the highly replicable VIRUS spectrograph which consists of a mosaic of IFUs spread over a 16 ...
Guillermo A. Blanc +1 more
wiley +1 more source
A recent merger in the Fornax dwarf spheroidal galaxy
, 2016 This contribution describes a recent photometric survey of the Fornax dwarf spheroidal galaxy. CCD photometry in two colours (V and I) was obtained for a 10 degree2 region centred on Fornax.
Coleman, Matthew
core +1 more source
Deep photometry of the Draco dwarf spheroidal galaxy [PDF]
The Astronomical Journal, 1986 We report the results of deep CCD photometry of two overlapping fields in the Draco dwarf spheroidal galaxy. We find (B-V)o,g = m0.69, indicating a mean [Fe/H] = −2.0. The width of the giant branch below the horizontal branch is somewhat wider than our observational errors permit, from which we infer there is a spread in metallicities amongst the Draco
Bruce W. Carney, P. Seitzer
openaire +1 more source
Properties of the Photometric Components of Lenticular Galaxies
Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012 After almost one century since their definition, the origin of lenticular galaxies is still a matter of debate. Several formation processes have been proposed in order to explain the wide variety of their observational properties. These properties could indicate that the class of lenticulars is a family formed by galaxies with different formations and ...
J. Alfonso L. Aguerri, Elias Brinks
wiley +1 more source
Annihilating dark matter search with 12 years of Fermi LAT data in nearby galaxy clusters
SciPost Physics Proceedings, 2023 Galaxy clusters contain an abundance of dark matter making them attractive laboratories for indirect DM searches. This work details a search for signals of pair annihilation from WIMP dark matter in the GeV gamma ray regime.
Charles Thorpe-Morgan, D. Malyshev, C.-A. Stegen, Andrea Santangelo, J. Jochum
doaj +1 more source