Results 11 to 20 of about 201,327 (224)

Dwarf elliptical galaxies as ancient tidal dwarf galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
The formation of tidal dwarf galaxies (TDGs) is triggered by the encounters of already existing galaxies. Their existence is predicted from numerical calculations of encountering galaxies and is also well documented with observations. The numerical calculations on the formation of TDGs furthermore predict that TDGs cannot contain significant amounts of
Joerg Dabringhausen, Pavel Kroupa
exaly   +3 more sources

Dwarf Galaxies with the Highest Concentration Are Not Thicker than Ordinary Dwarf Galaxies

open access: yesThe Astrophysical Journal, 2023
The formation mechanism of high-concentration dwarf galaxies is still a mystery. We perform a comparative study of the intrinsic shape of nearby low-mass galaxies with different stellar concentration.
Lijun Chen   +7 more
doaj   +3 more sources

THE NATURE OF RED DWARF GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2009
9 pages, 8 figures, Accepted for publication in ...
Wang, Y   +7 more
openaire   +5 more sources

Star Forming Dwarf Galaxies [PDF]

open access: yes, 2011
Star forming dwarf galaxies (SFDGs) have a high gas content and low metallicities, reminiscent of the basic entities in hierarchical galaxy formation scenarios. In the young universe they probably also played a major role in the cosmic reionization. Their abundant presence in the local volume and their youthful character make them ideal objects for ...
Bergvall, Nils,, Nils Bergvall
openaire   +3 more sources

Ultra-compact dwarf galaxy formation by tidal stripping of nucleated dwarf galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2013
Ultra Compact Dwarf Galaxies (UCDs) and dwarf galaxy nuclei have many common properties, such as internal velocity dispersions and colour-magnitude trends, suggesting tidally stripped dwarf galaxies as a possible UCD origin. However, UCDs typically have sizes more than twice as large as nuclei at the same luminosity. We use a GPU-enabled version of the
Holger Baumgardt
exaly   +6 more sources

Tidal Dwarf Galaxies [PDF]

open access: yesSymposium - International Astronomical Union, 1999
We review the observational evidences for tidal dwarf galaxies, a class of small galaxies formed out of the tidal debris of collisions between massive galaxies. Tidal dwarfs are found far from the interacting parent galaxies, associated with massive clouds of atomic hydrogen located at the tip of long tidal tails.
Duc, Pierre-Alain, Mirabel, Felix
openaire   +2 more sources

The Pristine dwarf galaxy survey–V. The edges of the dwarf galaxy Hercules

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We present a new spectroscopic study of 175 stars in the vicinity of the dwarf galaxy Hercules (d ∼ 132 kpc) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Field multi-object system to solve the conundrum that whether Hercules is tidally disrupting.
Nicolas Longeard   +8 more
openaire   +3 more sources

Dwarf‐Galaxy Cosmology [PDF]

open access: yesAdvances in Astronomy, 2010
This is the editorial paper which introduces the Special Issue on Dwarf-Galaxy Cosmology published in Advances in Astronomy. The issue contains fourteen review papers, and one original research article. All papers were peer-reviewed by a minimum of two referees. To read the Special Issue, please follow this link: http://www.hindawi.com/journals/aa/2010/
Regina Schulte-Ladbeck   +3 more
openaire   +3 more sources

An Overview of the Dwarf Galaxy Survey [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 2013
The Dwarf Galaxy Survey (DGS) program is studying low-metallicity galaxies using 230h of far-infrared (FIR) and submillimetre (submm) photometric and spectroscopic observations of the Herschel Space Observatory and draws to this a rich database of a wide range of wavelengths tracing the dust, gas and stars.
Madden, S. C.   +40 more
openaire   +8 more sources

Identification and Characterization of a Large Sample of Distant Active Dwarf Galaxies in XMM-SERVS

open access: yesThe Astrophysical Journal, 2023
Active dwarf galaxies are important because they contribute to the evolution of dwarf galaxies and can reveal their hosted massive black holes. However, the sample size of such sources beyond the local universe is still highly limited.
Fan Zou   +12 more
doaj   +1 more source

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