Tidal dwarf galaxies candidates in a sample of minor merger of galaxies

Details Tidal dwarf galaxies candidates in a sample of minor merger of galaxies Tidal dwarf galaxies candidates in a sample of minor merger of galaxies

2005-10-26

arxiv.org/abs/astro-ph/0510757v1

Astronomy and Astrophysics

Astrophysics

Send to A&A, 8 pages, 2 figures

Scientific paper

We present in this paper a list of candidates tidal dwarf galaxies selected among a sample of 117 HII region observed in 11 minor mergers. The classification of the HII regions was performed using the blue absolute magnitude (M$_B$ $<$ -15), H$\alpha$ luminosity ($\cal L$$(H\alpha)$ $>$ 10$^{39}$ erg s$^{-1}$) and the star formation rate ($SFR_{H\alpha}$ $>$ 0.4 M$_{\odot}$ y$^{-1}$) as parameters. The total number of UV photons, the number of the star of each spectral type and the total stellar mass of the cluster were computed for different models adopting Salpeter's IMF with $\alpha = -2.65$ for the ionizing cluster. The ionizing cluster model which better reproduce the observed properties are supermassive clusters with mass greater than 10$^6 \leq M/M_{\odot} \leq 10^7$.

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