Results 91 to 100 of about 339,165 (211)
Dwarf Galaxies and Cluster Environments
Proceedings of the International Astronomical Union, 2018 AbstractWe report an investigation of the properties of dwarf galaxies (Mr < -15) inside 26 clusters at z = 0.15 – 0.25, using the X-ray data from the Chandra archive, and optical images taken with Subaru Suprime-Cam. Our results include: 1. Investigation of the dwarf galaxy density distribution is sensitive to the background galaxies and the choice
Hashimoto, Y., Henry, J., Boehringer, H.
openaire +3 more sources
NGC 3627: a galaxy-dwarf collision? [PDF]
Astronomy & Astrophysics, 2012 8 pages, 6 figures, 5 tables.
Weżgowiec, Marek +2 more
openaire +3 more sources
The Astrophysical Journal LettersA wealth of observations have long suggested that the vast majority of isolated classical dwarf galaxies ( M _* = 10 ^7 –10 ^9 M _⊙ ) are currently star forming.
Timothy Carleton +27 more
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The VVVX quest for satellites around the Circinus galaxy
Astronomy & AstrophysicsContext. The Circinus galaxy is the nearest type-2 Seyfert galaxy, located at a distance of 4.2 Mpc. Its environment is challenging to explore because of the low Galactic latitudes of its location, behind the disc of the Milky Way. Aims.
Baravalle L. D. +12 more
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CHARTING UNEXPLORED DWARF GALAXY TERRITORY WITH RR LYRAE [PDF]
, 2015 Observational biases against finding Milky Way (MW) dwarf galaxies at low Galactic latitudes (b ≲ ?> 20°) and at low surface brightnesses ( &mgr; V,0 ≳ ?> 29 mag arcsec − 2 ?> ) currently limit our understanding of the faintest limits of the galaxy ...
Mariah Baker, B. Willman
semanticscholar +1 more source
Evolution of dwarf galaxies: a dynamical perspective [PDF]
Astronomy & Astrophysics, 2014 For a rotating galaxy, the inner circular-velocity gradient d_{R}V(0) provides a direct estimate of the central dynamical mass density, including gas, stars, and dark matter. We consider 60 low-mass galaxies with high-quality HI and/or stellar rotation curves (including starbursting dwarfs, irregulars, and spheroidals), and estimate d_{R}V(0) as V(R_d)/
Federico Lelli +2 more
openaire +4 more sources
Exploring the Evolution of a Dwarf Spheroidal Galaxy with SPH Simulations. II. AGN Feedback
The Astrophysical JournalWe investigate active galactic nucleus (AGN) feedback from an intermediate-mass black hole at the center of a dwarf spheroidal galaxy, by performing isolated galaxy simulations using a modified version of the GADGET-3 code. We consider Leo II (PGC 34176)
Roberto Hazenfratz +3 more
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Searching for nearby diffuse dwarf galaxies in the COSMOS field
Frontiers in Astronomy and Space SciencesIt remains challenging to systematically survey nearby diffuse dwarf galaxies and address the formation mechanism of this population distinguishing from regular ones.
Dong Dong Shi +7 more
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The molecular gas reservoir of 6 low-metallicity galaxies from the Herschel Dwarf Galaxy Survey - A ground-based follow-up survey of CO(1–0), CO(2–1), and CO(3–2) [PDF]
, 2014 Context. Observations of nearby starburst and spiral galaxies have revealed that molecular gas is the driver of star formation. However, some nearby low-metallicity dwarf galaxies are actively forming stars, but CO, the most common tracer of this ...
D. Cormier +17 more
semanticscholar +1 more source
Contribution of stripped nuclear clusters to globular cluster and ultracompact dwarf galaxy populations [PDF]
, 2014 We use the Millennium II cosmological simulation combined with the semi-analytic galaxy formation model of Guo et al. to predict the contribution of galactic nuclei formed by the tidal stripping of nucleated dwarf galaxies to globular cluster (GC) and ...
J. Pfeffer +3 more
semanticscholar +1 more source