Name: Chris Packham

Institution: University of Florida

e-mail: packham(no-spam)astro.ufl.edu

Partner Contry: USA

Science Meeting: Yes

User Meeting: Yes

NGO Staff Meeting: No

Presentation: Yes

Format: Oral

Title: Mid-IR Sub-Arcsecond Resolution Observations of Luminous IR Galaxies

Co-author: Alonso-Herrero, Almudena Colina, Luis Díaz-Santos, Tanio Rieke, George H Radomski, James T Telesco, Charles M

Co-authors' Institutions: Departamento de Astrof?sica Molecular e Infrarroja, Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 Gemini Observatory, c/o AURA, Inc., Casilla 603, La Serena, Chile

Abstract:

The superb spatial resolution afforded by the Gemini telescopes at mid-IR wavelengths allows the investigation of galaxies at unprecedented resolution. The mid-IR emission of luminous IR galaxies follows a strikingly similar morphology to that of HST Pa-alpha images, closely following powerful HII regions. Subsequent spectroscopy shows deep silicate absorption over the HII regions, but not necessarily the nucleus, as well as extended PAH emission. Implications for understanding the central regions of galaxies as well as the star formation rates are examined.

Comments: