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Deep multiband surf...
Deep multiband surface photometry on a sample of 24 blue compact galaxies II. A volume-limited sample of 21 emission line galaxies
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- Micheva, Genoveva (author)
- Stockholms universitet,Institutionen för astronomi
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- Östlin, Göran (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Zackrisson, Erik (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Bergvall, Nils (author)
- Uppsala universitet,Observationell astrofysik
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- Marquart, Thomas (author)
- Uppsala universitet,Stockholms universitet,Institutionen för astronomi,Observationell astrofysik
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Masegosa, J. (author)
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Marquez, I. (author)
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- Cumming, Robert, 1967 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Durret, F. (author)
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(creator_code:org_t)
- 2013-07-17
- 2013
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 556, s. A10-
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Abstract
Subject headings
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- Aims. We present deep surface photometry of a volume-limited sample of 21 UM emission line galaxies in broadband optical UBVRI and near infrared (NIR) HKs filters. The sample comprises 19 blue compact galaxies (BCGs) and two spirals. Methods. We separated the burst and host populations for each galaxy and compared them to stellar evolutionary models with and without nebular emission contribution. We measured and analyzed the A(180) asymmetry in all filters, the concentration index C, the scale length, and the central surface brightness of the host galaxy. Results. A shift in the average A180 asymmetry is detected from optical to NIR. This shift seems correlated with the morphological class of the BCGs. Using the color-asymmetry relation, we identify five BCGs in the sample as mergers, which is confirmed by their morphological class. Though clearly separated from normal galaxies in the concentration-asymmetry parameter space, we find that it is not possible to distinguish luminous starbursting BCGs from the merely star forming low luminosity BCGs.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies: starburst
- galaxies: dwarf
- galaxies: irregular
- galaxies: photometry
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Micheva, Genovev ...
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Östlin, Göran
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Zackrisson, Erik
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Bergvall, Nils
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Marquart, Thomas
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Masegosa, J.
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show more...
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Marquez, I.
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Cumming, Robert, ...
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Durret, F.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astronomy and As ...
- By the university
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Stockholm University
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Chalmers University of Technology
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Uppsala University