Speaker
Ms
María Jesús Jiménez
(Institut für Theoretische Astrophysik, Zentrum für Astronomie der Universität Heidelberg, Germany)
Description
The efficiency of star formation in other galaxies is often studied only focusing on molecular gas traced by CO emission due to the faintness of other lines. However the emission coming from lines such as HCN or HCO+ is an essential tool to probe the actual dense gas.
Therefore one of the key ways to probe the physics conditions in the star forming gas and as importantly, study if and how they vary across galactic disks and galaxy-to-galaxy, is assembling observations of molecular lines with different critical densities and compare these observations to tracers of star formation. For this purpose we initiated a large program (EMPIRE) using EMIR at the IRAM 30m telescope to map emission from dense gas tracers (HCN, HCO+, HCN, etc.) along with the CO isotope 13CO and C180 across 9 nearby disk galaxies.
Combined with existing ancillary data at virtually all wavelengths from the radio to the UV, we will be able to assess the physical properties of the gaseous ISM and and how they vary across entire galaxy disks systematically for the first time.
Author
Ms
María Jesús Jiménez
(Institut für Theoretische Astrophysik, Zentrum für Astronomie der Universität Heidelberg, Germany)
Co-authors
Adam K. Leroy
(National Radio Astronomy Observatory, Charlottesville, USA)
Alberto D. Bolatto
(Department of Astronomy, University of Maryland, USA)
Amanda Kepley
(National Radio Astronomy Observatory, Green Bank Observatory, USA)
Andreas Schruba
(Max Planck Institut für extraterrestrische Physik, Garching, Germany)
Annie Hughes
(Max-Planck-Institut für Astronomie, Heidelberg, Germany)
Antonio Usero
(Observatorio Astronómico Nacional, Madrid)
Carsten Kramer
(IRAM, Avenida Divina Pastora 7, Granada, España)
Diane Cormier
(Institut für theoretische Astrophysik, Zentrum für Astronomie der Universität Heidelberg, Germany)
Eva Schinnerer
(Max Planck Institute für Astronomie, Heidelberg, Germany)
Fabian Walter
(Max Planck Institut für Astronomie, Heidelberg, Germany)
Frank Bigiel
(Institut für Theoretische Astrophysik, Zentrum für Astronomie der Universität Heidelberg, Germany)
Gaelle Dumas
(IRAM, 300 Rue de la Pisicne, St. Martin d’Hères, France)
Jerôme Pety
(IRAM, 300 Rue de la Piscine, St. Martin d'Hères, France)
Karin Sandstrom
(Steward Observatory, University of Arizona, USA)
Karl-Friedrich Schuster
(IRAM, 300 Rue de la Piscine, St. Martin d’Hères, France)
Laura Zschaechner
(Max Planck Institute für Astronomie, Heidelberg, Germany)
Santiago García-Burillo
(Observatorio Astronómico Nacional, Madrid)