2009
DOI: 10.1051/0004-6361/200911878
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Star formation in the intragroup medium and other diagnostics of the evolutionary stages of compact groups of galaxies

Abstract: Context. Compact groups of galaxies are entities that have high densities of galaxies and serve as laboratories to study galaxy interactions, intergalactic star formation and galaxy evolution. Aims. The main goal of this study is to search for young objects in the intragroup medium of seven compact groups of galaxies: HCG 2, 7, 22, 23, 92, 100 and NGC 92 as well as to evaluate the stage of interaction of each group. Methods. We used Fabry-Perot velocity fields and rotation curves together with GALEX NUV and FU… Show more

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Cited by 40 publications
(49 citation statements)
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References 73 publications
(138 reference statements)
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“…The present study complements the sample of compact group galaxies with measured velocity maps presented by Plana et al (1998Plana et al ( , 2000Plana et al ( , 2003, Mendes de Oliveira et al (1998), Amram et al (2003Amram et al ( , 2004Amram et al ( , 2007, and Torres-Flores et al (2009). We present for the first time velocity maps for galaxies in nine Hickson compact groups (HCGs 37,40,47,49,54,56,68,79,and 93.…”
Section: Introductionmentioning
confidence: 71%
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“…The present study complements the sample of compact group galaxies with measured velocity maps presented by Plana et al (1998Plana et al ( , 2000Plana et al ( , 2003, Mendes de Oliveira et al (1998), Amram et al (2003Amram et al ( , 2004Amram et al ( , 2007, and Torres-Flores et al (2009). We present for the first time velocity maps for galaxies in nine Hickson compact groups (HCGs 37,40,47,49,54,56,68,79,and 93.…”
Section: Introductionmentioning
confidence: 71%
“…This difference is an indicator of interactions only for unbarred galaxies given that it is common to find bars that are not aligned with kinematic major axes of galaxies. If we discard the barred galaxies we still find that almost one third of the sample of 32 galaxies studied in detail so far (this paper, Mendes de Oliveira et al 2003;Torres-Flores et al 2009) has a misalignment greater than 20 degrees between the kinematic and the morphological position angle, yielding even more pieces of evidence for the high incidence of interactions among galaxies in compact groups. Only one galaxy (HCG 49a) has a kinematic and morphological inclination lower than 25 degrees.…”
Section: Interaction Indicatorsmentioning
confidence: 78%
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“…Using the classification scheme of Surace et al (1998;see also Veilleux et al 2002), such interactions are at least type II ("First contact"), where there is clear overlap. Second, for a subset of our data, the level of interaction has been studied in detail by means of kinematic, Fabry-Perot, data, and specific interaction indicators Mendes de Oliveira et al 1998Amram et al 2004;Torres-Flores et al 2009. These indicators include a highly disturbed velocity field, central double nuclei, double kinematic gas component (i.e., a disagreement between both sides of the rotation curve), kinematic warping, gaseous versusstellar major-axis misalignment (hereafter, G/SMM), tidal tails, high IR luminosity, and central activity.…”
Section: Sfr and M *mentioning
confidence: 99%