Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..421...81h&link_type=abstract
Galaxies in Isolation: Exploring Nature Versus Nurture, proceedings of a conference held 12 to 15 May 2009 in Granada, Spain. Ed
Astronomy and Astrophysics
Astronomy
Scientific paper
Using SDSS-DR4 we studied the spatial distribution and the influence over star formation activity due to interactions in low and high surface brightness galaxies in the redshift range 0.01< z <0.1. With cylinder counts and projected distance to the fifth-nearest neighbor as environment tracers, we found that LSBs tend to have a lack of companions compared to HSBs in small scales (< 2 Mpc). Regarding the interactions, we found that the fraction of LSBs with strong star formation activity increases when the neighbor is closer than rp / r90 ˜ 4. The intensity of the reaction, measured by the average value of b, seems to be stronger for HSBs compared to LSBs. Our results suggest that, rather than be a condition for their survival and evolution, isolation of LSBs is connected with their formation scenario.
Galaz Gaspar
Herrera-Camus Rodrigo
Lambas Diego G.
Padilla Nelson
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