Results 191 to 200 of about 46,922 (223)

Extreme energy in a relaxed galaxy group indicates the bursty nature of AGN feedback

Eckert D, Gastaldello F, Lovisari L, McGee S, Pasini T, Brienza M, Kolokythas K, O'Sullivan E, Simionescu A, Sun M, Bourne M, Chen Y, Cui W, Ettori S, Finoguenov A, Gozaliasl G, Kale R, Mernier F, Oppenheimer B, Schellenberger G, Seppi R, Tempel E.   +21 more
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Kinematics of luminous blue compact galaxies

Astrophysics and Space Science, 2001
We present results from a Fabry-Perot study of the Hα velocity fields and morphologies of a sample of luminous blue compact galaxies. We estimate masses from photometry and kinematics and show that many of these BCGs are not rotationally supported. Mergers or strong interactions appear to be the triggering mechanism of the extreme starbursts seen in ...
Göran Östlin, Philippe Amram, Jaques Boulesteix, Nils Bergvall, Josefa Masegosa, Isabel Márquez   +5 more
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Galaxy kinematics from ISIS spectra

Vistas in Astronomy, 1991
Abstract The ISIS spectrograph on the 4.2 m WHT was used to observe three galaxies NGC 2146, NGC 1569, and NGC 3034 (M82). Rotation curves along the major axes of these galaxies are presented. For NGC 3034, the rotation curve derived using the relatively new technique for measuring stellar motion from one of the the CaII IR triplet ( ∼8550 A )
J. Castles, C.D. McKeith, A. Greve
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Local kinematics of the Galaxy

Astronomical & Astrophysical Transactions, 2006
We found the parameters of the velocity ellipsoid in the solar neighbourhood, the Galactocentric solar velocity, and the circular velocity at the solar radius. In order to take into account biasing and irregularities of the velocity field, we extrapolated to zero heliocentric distance. For the Galactocentric solar velocity, we also extrapolated to zero
V. V. Orlov, A. A. Mylläri, A. S. Stepanishchev, L. P. Ossipkov   +3 more
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Phoenix Dwarf Galaxy Stellar Kinematics

EAS Publications Series, 2011
The Phoenix dwarf galaxy is the nearest and most typical representative of the class of the so-called transition dwarf galaxies (from spheroidal to irregular). We present here precise velocity measurements obtained from high-resolution spectroscopy of more than one hundred member stars, allowing us to study the stellar kinematics and estimate the ...
S. Zaggia, E.V. Held, V. Sommariva, Y. Momany, I. Saviane, L. Rizzi   +5 more
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Kinematic asymmetry of galaxy pairs

Proceedings of the International Astronomical Union, 2019
AbstractThe interaction between galaxies is believed to be the main origin of the peculiarities of galaxies. It can disturb not only the morphology but also the kinematics of galaxies. These disturbed and asymmetric features are the indicators of galaxy interaction. We study the velocity field of ionized gas in galaxy pairs based on MaNGA survey. Using
Shuai Feng, Shi-Yin Shen, Fang-Ting Yuan
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The Dependence of Satellite Galaxy Kinematics on Galaxy Properties

Chinese Astronomy and Astrophysics, 2018
Abstract The relations between the kinematics of satellites and the properties of hosts and satellites themselves are investigated in this paper. Our sample of hosts and satellites is selected from the Sloan Digital Sky Survey (SDSS) data by adopting a self-adapted method developed by van den Bosch et al.
Pei Yuan, Wang Hui-yuan
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Galaxy kinematics and gravitation

1990
Two galactic length-scale modifications of the Newtonian gravity law are examined in the light of observational dynamical properties of spiral galaxies: (1) the introduction of a Yukawa-type coupling for the gravitational potential, proposed by Sanders (1986); and (2) the introduction of a 1/R correction to the Newtonian gravitational force, proposed ...
Dubal, M. R., Salucci, P., Persic, M.
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Kinematic lopsidedness in spiral galaxies

1999
Morphological asymmetries between the approaching and receding sides in both the stellar and neutral hydrogen distribution are often observed in spiral galaxies. Here, attention is drawn to the presence of large-scale asymmetries in the kinematics of the neutral hydrogen gas. An example of such a kinematically lopsided galaxy is presented and discussed.
Schoenmakers, RHM, Swaters, RA
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