Results 1 to 10 of about 12,147 (249)
Lopsidedness in dwarf irregular galaxies [PDF]
42 pages, LaTex.
Ana Heller+4 more
core +7 more sources
DDO 43: A Prototypical Dwarf Irregular Galaxy? [PDF]
We present sensitive and high resolution 21 cm observations of the dwarf irregular (dIm) galaxy DDO 43, in conjunction with optical broad and narrow band images in U, B, V, and Halpha. The observations are used to examine the relationship between its HI morphology and kinematics to past and present star formation.
Caroline E. Simpson+2 more
openalex +5 more sources
A STAR FORMATION LAW FOR DWARF IRREGULAR GALAXIES [PDF]
The radial profiles of gas, stars, and far ultraviolet radiation in 20 dwarf Irregular galaxies are converted to stability parameters and scale heights for a test of the importance of two-dimensional (2D) instabilities in promoting star formation. A detailed model of this instability involving gaseous and stellar fluids with self-consistent thicknesses
Bruce G. Elmegreen, Deidre A. Hunter
openalex +5 more sources
The Sagittarius dwarf irregular galaxy: Metallicity and stellar populations [PDF]
10 pages, 7 figures, accepted A& ...
Y. Momany+3 more
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Star clusters in the dwarf irregular galaxy Leo A [PDF]
Context. Leo A is an isolated gas-rich dwarf irregular galaxy of low stellar mass and metallicity residing at the outskirts of the Local Group. Ages of the stellar populations in Leo A range from ∼10 Myr to ∼10 Gyr. So far, only one star cluster has been discovered in this galaxy. Aims.
R. Stonkutė+4 more
openalex +5 more sources
Properties of the Dwarf Irregular Galaxy DDO 169 [PDF]
This paper investigates the H i, optical, and dark matter properties of the dwarf irregular galaxy DDO 169. The galaxy shows signs of being tidally disrupted. Evidence of this can easily be seen in the galaxy's velocity field. We also show that DDO 169, which was thought to have a companion galaxy, does not.
Mansie G. Iyer, Caroline E. Simpson
openalex +3 more sources
Kinematics of the Ionized Gas in Dwarf Irregular Galaxies [PDF]
AbstractSome preliminary results focused on the kinematics and dynamics of the ionized gas in the Local Group dwarf irregular galaxy IC10 are presented.
Margarita Valdez-Gutiérrez, M. Rosado
openalex +3 more sources
The inclination of the dwarf irregular galaxy Holmberg II
We provide constraints on the inclination angle of the H\,{\sc i} disk of the dwarf irregular galaxy Holmberg II (Ho II) from stability analysis of the outer gaseous disk. We point out that a mean inclination angle of 27 degrees and thus a flat circular velocity of ~60 km/s, is required to have a level of gravitational stability similar to that found ...
F. J. Sánchez-Salcedo+2 more
openalex +5 more sources
Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions [PDF]
Famaey B, McGaugh SS.
exaly +2 more sources
Countless low-surface brightness objects - including spiral galaxies, dwarf galaxies, and noise patterns - have been detected in recent large surveys.
Oliver Müller, Eva Schnider
doaj +1 more source