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Stars and gas in the inner parts of galaxies seen in SAURON integral field observations

Peletier, R. F. (author)
Fathi, Kambiz (author)
Stockholms universitet,Institutionen för astronomi
Allard, E. L. (author)
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Knapen, Johan (author)
Sarzi, M. (author)
van de Ven, G. (author)
Falcón Barroso, Jesús (author)
Cappellari, M. (author)
de Zeeuw, P. T. (author)
Emsellem, Eric (author)
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 (creator_code:org_t)
Elsevier BV, 2007
2007
English.
In: New Astronomy Reviews. - : Elsevier BV. - 1387-6473. ; 51:1-2, s. 29-33
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We give two examples of spiral galaxies that show non-circular gas motions in the inner kiloparsecs, from SAURON integral field spectroscopy. We use harmonic decomposition of the velocity field of the ionized gas to study the underlying mass distribution, employing linear theory. The higher order harmonic terms and the main kinematic features of the observed data are consistent with an analytically constructed simple bar model. We also present maps of a number of strong absorption lines in M 100, derive simple stellar populations and correlate them with features in the gas kinematics.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

Galaxies: bulges
Galaxies: evolution
Galaxies: formation
Galaxies: kinematics and dynamics
Galaxies: spiral
Galaxies: structure
Galaxies: nuclei
Galaxies: individual (NGC 5448
M 100)
Extragalactical astronomy
Extragalaktisk astronomi

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ref (subject category)
art (subject category)

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