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SUMMARY:The cold winds of change – hot cores and molecular outflows in d
 usty galaxies - Susanne Aalto (Chalmers\, Sweden)
DTSTART:20150505T130000Z
DTEND:20150505T140000Z
UID:TALK59210@talks.cam.ac.uk
CONTACT:David Titterington
DESCRIPTION:Molecular gas plays a fundamental role in feeding and regulati
 ng star formation and growth of supermassive black holes (SMBH) in galaxy 
 nuclei and is therefore a primary evolutionary parameter in starburst and 
 AGN activity.  ALMA and NOEMA are powerful new instruments for studying ga
 laxy evolution using molecules as observational tools – exploiting their
  ability to trace dynamical\, chemical and physical conditions.\n   I will
  present recent high resolution ALMA results on vibrationally excited mole
 cules and how they can be used to peek inside the optically thick veil of 
 extremely obscured\, Compton thick\, galaxy nuclei.  These lines are effic
 ient probes even when N(H2) exceeds 1e24 cm-2 and trace nuclear disks and 
 bars\, enclosed mass inside the dusty core – and are direct measurements
  of the hidden mid-infrared luminosity densities.  These nuclei may also d
 rive cold molecular winds and we have studied the massive outflow of the n
 earby lenticular NGC1377 in exquisite detail with ALMA – revealing new s
 urprising results on its morphology and origin.\n   Furthermore\, new ALMA
  spectral scans demonstrate the emerging power of astrochemistry as a tool
  to probe starburst and AGN evolution in obscured nuclei\, AGNs and starbu
 rsts.  I will discuss the astrochemistry of the obscured LIRG NGC4418 in r
 elation to that of the nearby Seyfert galaxy NGC1068 and the ULIRG Arp220.
 \n
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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