Results 1 to 10 of about 9,733 (218)

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
doaj   +3 more sources

Formation of Transitional cE/UCD Galaxies through Massive/Dwarf Disc Galaxy Mergers

open access: yesGalaxies, 2023
The dynamics of the merger of a dwarf disc galaxy with a massive spiral galaxy of the Milky Way type were studied in detail. The remnant of such interaction after numerous crossings of the satellite through the disc of the main galaxy was a compact ...
Alexander V. Khoperskov   +2 more
doaj   +1 more source

Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers [PDF]

open access: yesSerbian Astronomical Journal, 2022
Stellar streams and shells are observed in halos of spiral galaxies. In this paper, we investigated the formation of these structures due to mergers between the host spiral galaxy and its dwarf satellite galaxies.
Milošević S.
doaj   +1 more source

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

Formation of a Massive Lenticular Galaxy Under the Tidal Interaction with a Group of Dwarf Galaxies

open access: yesThe Astrophysical Journal Letters, 2023
Based on the atomic-hydrogen (H i ) observations using the Five-hundred-meter Aperture Spherical radio Telescope, we present a detailed study of the gas-rich massive S0 galaxy NGC 1023 in a nearby galaxy group.
Jin-Long Xu   +8 more
doaj   +1 more source

A spectroscopic study of the low redshift dwarf galaxy SDSS J134326.99+431118.7 to calculate star formation rate

open access: yesBibechana, 2021
We present a spectroscopic study of an interacting emission-line dwarf galaxy SDSS J134326.99+431118.7. We analyzed eight-strong emission lines of wavelength in a range of 3902.1Å to 6619.1Å.
Daya Nidhi Chhatkuli   +2 more
doaj   +3 more sources

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
Dabringhausen, Jörg, Kroupa, Pavel
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

A Nonrepeating Fast Radio Burst in a Dwarf Host Galaxy

open access: yesThe Astrophysical Journal, 2023
We present the discovery of an as yet nonrepeating fast radio burst (FRB), FRB 20210117A, with the Australian Square Kilometre Array Pathfinder (ASKAP), as a part of the Commensal Real-time ASKAP Fast Transients Survey.
Shivani Bhandari   +16 more
doaj   +1 more source

Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers

open access: yesThe Astrophysical Journal, 2023
Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić   +3 more
doaj   +1 more source

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