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Your search keyword '"galaxies: fundamental parameter"' showing total 2 results
Start Over Descriptor "galaxies: fundamental parameter" Publisher american astronomical society
2 results on '"galaxies: fundamental parameter"'

1. The Impact of Evolving Infrared Spectral Energy Distributions of Galaxies on Star Formation Rate Estimates

Author

Emanuele Daddi, Roberto Maiolino, Herve Aussel, Dieter Lutz, Ivan Valtchanov, Paola Popesso, Alessandro Cimatti, Albrecht Poglitsch, Amélie Saintonge, Reinhard Genzel, Stijn Wuyts, S. Berta, Francesca Pozzi, Bruno Altieri, A. M. Pérez García, David J. Rosario, M. Sanchez-Portal, Guilaine Lagache, Linda J. Tacconi, Giulia Rodighiero, Ángel Bongiovanni, Jordi Cepa, N. M. Förster Schreiber, Raanan Nordon, Lin Yan, Dario Fadda, P. Santini, E. Sturm, Benjamin Magnelli, Paola Andreani, Nordon R., Lutz D., Genzel R., Berta S., Wuyts S., Magnelli B., Altieri B., Andreani P., Aussel H., Bongiovanni A., Cepa J., Cimatti A., Daddi E., Fadda D., Förster Schreiber N. M., Lagache G., Maiolino R., Pérez García A. M., Poglitsch A., Popesso P., Pozzi F., Rodighiero G., Rosario D., Saintonge A., Sanchez-Portal M., Santini P., Sturm E., Tacconi L. J., Valtchanov I., and Yan L.

Subjects
Physics, cosmology: observation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, Infrared, Star formation, Spectral density, FOS: Physical sciences, galaxies: starburst, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Redshift, Spectral line, Galaxy, infrared: galaxies, Space and Planetary Science, Spectral energy distribution, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, galaxies: evolution, galaxies: fundamental parameter, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We combine Herschel-PACS data from the PEP program with Spitzer 24 um and 16 um photometry and ultra deep IRS mid-infrared spectra, to measure the mid- to far-infrared spectral energy distribution (SED) of 0.7, Comment: 25 pages, 15 figures, accepted to ApJ; v3 include many minor modifications following the referee report, added a section comparing various z~2 IR template calibrations

Published
2012

2. THE TEMPERATURE OF HOT GAS HALOS OF EARLY-TYPE GALAXIES

Author

Silvia Pellegrini and S. Pellegrini

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Virial theorem, cD, Luminosity, Gravitational potential, Astrophysics::Solar and Stellar Astrophysics, galaxies: elliptical and lenticular, galaxies: fundamental parameter, Astrophysics::Galaxy Astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Velocity dispersion, Astronomy and Astrophysics, Extragalactic astronomy, X-rays: ISM, Galaxy, Supernova, Space and Planetary Science, galaxies: kinematics and dynamic, High Energy Physics::Experiment, Halo, Astrophysics - High Energy Astrophysical Phenomena, galaxies: ISM, X-rays: galaxie, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Recently, the temperature T and luminosity L_X of the hot gas halos of early type galaxies have been derived with unprecedented accuracy from Chandra data, for 30 galaxies covering a wider range of galactic luminosity (and central velocity dispersion sigma_c) than before. This work investigates the origin of the observed temperatures, by examining the relationship between them and the galaxy structure, the gas heating due to Type Ia supernovae (SNIa's) and the gravitational potential, and the dynamical status of the gas flow. In galaxies with sigma_c, Comment: 16 pages, accepted for publication in ApJ

Published
2011
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