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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20181120T123000
DTEND;TZID=Atlantic/Canary:20181120T133000
UID:iactalks-1212
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1212
CREATED:2018-11-20T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Spatially resolved studies of Diffuse Interstellar Bands in Galaxie
 s beyond the Local Group
DESCRIPTION:Spatially resolved studies of Diffuse Interstellar Bands in Gal
 axies beyond the Local Group\nDr. Ana Monreal Ibero\n\nDiffuse Interstella
 r Bands (DIBs) are non-stellar weak absorption  features of unknown origin
  found in the spectra of different  astronomical objects when they are vie
 wed through one or several clouds  of Interstellar Medium. Galaxies other 
 than ours offer the opportunity  of study the behavior of DIBs under physi
 cal (e.g. radiation field) and  chemical (e.g. metallicity and relative ab
 undances) different to those  typically found in the Milky Way. This can i
 n turn, put further  constrains on the nature of the agents creating these
  features. Because  of their weakness, studies targeting extragalactic DIB
 s are relatively  scarce.  This is a research that will certainly blo
 ssom at the E-ELT  era. However, we can already start paving the way.  In 
 this talk, we will illustrate how MUSE can help us in this quest. I  will 
 use as examples some results on two highly reddened systems. In the  first
  one, AM 1353-272, we established a gradient of DIB strength in a  galaxy 
 at more than 150 Mpc (Monreal-Ibero et al. 2015, A&A, 576,  3). In the
  second one, The Antennae Galaxy, we measured the strength of  the l5780 a
 nd l5797 DIBs in more than 100 independent line of sights,  thus mapping t
 hese DIBs in a system outside the Local Group for the  first time (Monreal
 -Ibero et al. 2017, A&A, 615, 33). The  distribution of DIB strength w
 as compared with that of atomic hydrogen,  molecular gas, and PAHs as trac
 ed by the emission in the mid-infrared.  In both cases, DIB strength corre
 lates well with extinction, similar to  results for the Milky Way.
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