Search: onr:"swepub:oai:DiVA.org:su-110197" >
The ratio of patter...
The ratio of pattern speeds in double-barred galaxies
-
Font, Joan (author)
-
Beckman, John E. (author)
-
Zaragoza-Cardiel, Javier (author)
-
show more...
-
- Fathi, Kambiz (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
-
Epinat, Benoit (author)
-
Amram, Philippe (author)
-
show less...
-
(creator_code:org_t)
- 2014-08-18
- 2014
- English.
-
In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966 .- 1745-3933 .- 1745-3925. ; 444:1, s. l85-L89
- Related links:
-
https://academic.oup...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- We have obtained two-dimensional velocity fields in the ionized gas of a set of eight double-barred galaxies, at high spatial and spectral resolution, using their H alpha emission fields measured with a scanning Fabry-Perot spectrometer. Using the technique by which phase reversals in the non-circular motion indicate a radius of corotation, taking advantage of the high angular and velocity resolution, we have obtained the corotation radii and the pattern speeds of both the major bar and the small central bar in each of the galaxies; there are few such measurements in the literature. Our results show that the inner bar rotates more rapidly than the outer bar by a factor between 3.3 and 3.6.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Galaxies: evolution
- Galaxies: kinematics and dynamics
- Galaxies: structure
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database