Results 131 to 140 of about 611,346 (300)

A γ-Ray-emitting Collisional Ring Galaxy System in Our Galactic Neighborhood

open access: yesThe Astrophysical Journal Letters
The astrophysical γ -ray photons carry the signatures of the violent phenomena happening on various astronomical scales in our Universe. This includes supernova remnants, pulsars, and pulsar wind nebulae in the Galactic environment and extragalactic ...
Vaidehi S. Paliya, D. J. Saikia
doaj   +1 more source

Galaxy Evolution in Local Group Analogs. I. A GALEX study of nearby groups

open access: yes, 2009
Understanding the astrophysical processes acting within galaxy groups and their effects on the evolution of the galaxy population is one of the crucial topic of modern cosmology, as almost 60% of galaxies in the Local Universe are found in groups.
Bettoni, D.   +4 more
core   +1 more source

Molecular Clouds in Dwarf Irregular Galaxies [PDF]

open access: yesHighlights of Astronomy, 1989
The study of molecular clouds in dwarf galaxies was, until recently, an arduous task and provided detections in only a handful of sources (see Thronson and Bally 1986; Wiklind et al. 1986; Tacconi and Young 1987; Arnoult et al. 1988). Line strengths observed in CO were small (<100mK) and measurements were confined to one position per source, thus ...
openaire   +1 more source

Interstellar gas motions around massive star formation regions in the nearby dwarf galaxy DDO43

open access: yesActa Polytechnica
Areas of massive star formation are strongly influenced by stellar winds and supernovae, therefore, enhanced turbulent flows are expected. We analyse high-quality Karl G. Jansky Very Large Array observations of the neutral hydrogen gas content of DDO43,
Enikő Pichler   +4 more
doaj   +1 more source

A survey of nearby galaxies for CO [PDF]

open access: yes, 1980
We have made a survey of the nuclei of 81 galaxies for the 1-) line of CO. 38 of the galaxies are from a complete sample with recession velocity ≦400 km s-1 and 21-cm line strength ≧10-27 Wm-2, and the remainder represent nearby galaxies with weaker or ...
Phillips, T. G.   +2 more
core  

Galaxy Morphological Classification with Zernike Moments and Machine Learning Approaches

open access: yesThe Astrophysical Journal Supplement Series
Classifying galaxies is an essential step for studying their structures and dynamics. Using GalaxyZoo2 (GZ2) fractions thresholds, we collect 545 and 11,735 samples in nongalaxy and galaxy classes, respectively.
Hamed Ghaderi   +2 more
doaj   +1 more source

WILLMAN 1—A PROBABLE DWARF GALAXY WITH AN IRREGULAR KINEMATIC DISTRIBUTION [PDF]

open access: bronze, 2011
Beth Willman   +7 more
openalex   +1 more source

IUE spectra of clumpy irregular galaxies⋆ [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1982
BENVENUTI, PIERO, C. Casini, J. Heidmann
openaire   +3 more sources

THE CHEMISTRY OF IRREGULAR GALAXIES

open access: yes, 1995
8 pages with figures, uuencoded, compressed PostScript file; invited talk at the 5th Texas-Mexico Conference on Astrophysics, Tequesquitengo, Mexico, 3-5 April 1995; to appear in Rev. Mex. Astron.
openaire   +2 more sources

A Luminous X-Ray Active Galactic Nucleus in the Dwarf–Dwarf Galaxy Merger RGG 66

open access: yesThe Astrophysical Journal
We present the discovery of a luminous X-ray active galactic nucleus (AGN) in the dwarf galaxy merger RGG 66. The black hole is predicted to have a mass of M _BH ∼ 10 ^5.4 M _⊙ and to be radiating close to its Eddington limit ( L _bol / L _Edd ∼ 0.75 ...
Seth J. Kimbrell, Amy E. Reines
doaj   +1 more source

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