Results 11 to 20 of about 445,447 (209)

The Full-fledged Dwarf Irregular Galaxy Leo A [PDF]

open access: yesThe Astrophysical Journal, 2004
9 pages, 3 figures, submitted to ...
Vansevicius, Vladas   +10 more
openaire   +4 more sources

THE OUTER DISKS OF DWARF IRREGULAR GALAXIES [PDF]

open access: yesThe Astronomical Journal, 2011
AJ, in ...
Hunter, Deidre A.   +7 more
openaire   +2 more sources

Giant halos in dwarf irregular galaxies vs. dwarf elliptical galaxies [PDF]

open access: yesProceedings of the International Astronomical Union, 2005
We present a discovery of a giant stellar halo in NGC 6822, a dwarf irregular galaxy in the Local Group. This halo is mostly made of old red giants, showing striking features: 1) it is several times larger than the main body of the galaxy seen in the optical images, and 2) it is elongated in the direction almost perpendicular to the HI disk of NGC 6822.
Lee, Myung Gyoon, Hwang, Narae
openaire   +2 more sources

Lopsidedness in dwarf irregular galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2000
We quantify the amplitude of the lopsidedness, the azimuthal angular asymmetry index, and the concentration of star forming regions, as represented by the distribution of the H$α$ emission, in a sample of 78 late-type irregular galaxies. We bin the observed galaxies in two groups representing blue compact galaxies (BCDs) and low surface brightness ...
Heller, Ana B.   +4 more
openaire   +2 more sources

ON THE RADIAL EXTENT OF THE DWARF IRREGULAR GALAXY IC10 [PDF]

open access: yesThe Astrophysical Journal, 2010
7 pages, 4 figures, ApJ Letters ...
Sanna, N.   +18 more
openaire   +3 more sources

A STAR FORMATION LAW FOR DWARF IRREGULAR GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2015
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
openaire   +2 more sources

The Stellar Content of 10 Dwarf Irregular Galaxies [PDF]

open access: yesThe Astronomical Journal, 1998
We examine the stellar content of 10 dwarf irregular galaxies of which broad-band CCD photometry was published in Hopp & Schulte-Ladbeck (1995). We also present Halpha images for several of these galaxies. The galaxies in the sample are located outside of the Local Group.
Schulte-Ladbeck, Regina E., Hopp, Ulrich
openaire   +2 more sources

The CO contents of dwarf irregular galaxies

open access: yesThe Astrophysical Journal, 1987
A search has been conducted for CO in 16 dwarf irregular galaxies selected to span a wide range of infrared luminosity and color. CO was detected in six dwarf galaxies spanning the entire range in optical color and IR luminosity. The dwarf galaxies extend by three orders of magnitude in luminosity the correlation between IR and CO luminosities found ...
TACCONI, LJ, Young, JS
openaire   +2 more sources

Stellar Populations of Dwarf Irregular Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1996
We recently completed two-color CCD photometry of resolved stars in 11 dwarf irregular galaxies (Hopp & Schulte-Ladbeck, 1995, A&AS 111, 527), selected because of their relative isolation from massive galaxies in the Kran-Korteweg – Tammann sample (1979, AN 300, 181).
R.E. Schulte-Ladbeck, Ulrich Hopp
openaire   +1 more source

Chemical and kinematical evolution in nearby dwarf spheroidal galaxies [PDF]

open access: yes, 2006
Dwarf spheroidal (dSph) galaxies are the least massive and luminous objects known to exist. These galaxies are often considered as the fossil building blocks of massive systems predicted by some cosmological models.
Koch, Andreas
core   +1 more source

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