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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20140108T123000
DTEND;TZID=Atlantic/Canary:20140108T133000
UID:iactalks-572
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/572
CREATED:2014-01-08T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The Impact of Dwarf-Dwarf Galaxy Tidal Interactions
DESCRIPTION:The Impact of Dwarf-Dwarf Galaxy Tidal Interactions\nDr. Ruben 
 Sanchez-Janssen\n\nTwo competing effects appear to govern galaxy multiplic
 ity (pairs orgroups) at low masses: while associations of low-mass haloes 
 are naturally expected in a LCDM cosmology, galaxy formation within these 
 haloes is thought to be rendered inefficient due to the action of several 
 ionizing agents. Yet associations of dwarf galaxies are known to exist in 
 the Local Volume, and their frequency appears to be unexpectedly high for 
 LCDM expectations even in our own Local Group. Unfortunately, it is not ye
 t well understood what role do interactions between low-mass galaxies play
  in determining their star formation histories, structural properties, and
  neutral gas content. Here I will present an investigation of the impact o
 f dwarf-dwarf galaxy tidal interactions on their morphological and star fo
 rmation properties. The UGC5205 close pair consists of two low-mass (M* ~ 
 5E7 Msun), late-type galaxies with a relative projected distance of only 1
 0 kpc, and no nearby massive companions. I will show that these equal-mass
  interactions can be an important 'pre-processing' mechanism that acts bef
 ore dwarfs are affected by a more massive central galaxy, profoundly impac
 ting their star formation histories and morphologies.
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