Extragalactic abstracts - IRSA - California Institute of Technology
Extragalactic abstracts - IRSA - California Institute of Technology
Extragalactic abstracts - IRSA - California Institute of Technology
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Spitzer_Approved_<strong>Extragalactic</strong><br />
Mar 25, 10 16:24 Page 673/742<br />
Spitzer Space Telescope − General Observer Proposal #3640<br />
IRS observations <strong>of</strong> ultraluminous ELAIS galaxies<br />
Principal Investigator: Ismael Perez−Fournon<br />
Institution: Instituto de Astr<strong>of</strong>isica de Canarias<br />
Technical Contact: Ismael Perez−Fournon, Inst. Astr<strong>of</strong>isica de Canarias<br />
Co−Investigators:<br />
Baltasar Vila−Vilaro, University <strong>of</strong> Arizona<br />
Michael Rowan−Robinson, Imperial College <strong>of</strong> Science, <strong>Technology</strong> and Med<br />
Dimitra Rigopoulou, Department <strong>of</strong> Astrophysics, Oxford University<br />
Duncan Farrah, Jet Propulsion Laboratory<br />
Sebastian Oliver, University <strong>of</strong> Sussex<br />
Francesca Pozzi, University <strong>of</strong> Sussex<br />
David Clements, Imperial College <strong>of</strong> Science, <strong>Technology</strong> and Medici<br />
Eduardo A. Gonzalez−Solares, <strong>Institute</strong> <strong>of</strong> Astronomy, U. <strong>of</strong> Cambridge<br />
Ivan Valtchanov, Imperial College <strong>of</strong> Science, <strong>Technology</strong> and Medici<br />
Fabio La Franca, Dipartimento di Fisica, Universita‘ degli Studi "R<br />
Steve Serjeant, University <strong>of</strong> Kent, Canterbury<br />
Mattia Vaccari, Imperial College <strong>of</strong> Science, <strong>Technology</strong> and Medici<br />
Thomas Babbedge, Imperial College <strong>of</strong> Science, <strong>Technology</strong> and Medici<br />
Carlotta Gruppioni, University <strong>of</strong> Bologna<br />
Carlo Lari, Istituto di Radioastronomia, Bologna<br />
Evanthia Hatziminaoglou, Instituto de Astr<strong>of</strong>isica de Canarias<br />
Antonio Hernan−Caballero, Instituto de Astr<strong>of</strong>isica de Canarias<br />
Francisco M. Montenegro Montes, Instituto de Astr<strong>of</strong>isica de Canarias<br />
Alejandro Afonso−Luis, Instituto de Astr<strong>of</strong>isica de Canarias<br />
Science Category: ULIRGS/LIRGS/HLIRGS<br />
Observing Modes: IrsStare<br />
Hours Approved: 65.9<br />
Abstract:<br />
We propose to use the low spectral resolution capabilities <strong>of</strong> IRS to obtain high<br />
signal−to−noise mid−infrared spectra <strong>of</strong> a sample <strong>of</strong> 70 Ultra− and Hyperluminous<br />
extragalactic objects at high redshift discovered in the ELAIS survey. The<br />
European Large Area ISO Survey (ELAIS) <strong>of</strong>fers the largest complete mid−IR,<br />
high−z, high−L extragalactic sample prior to SPITZER. At any redshift ELAIS<br />
provides the most luminous objects easily observable with IRS, being complete to<br />
about S (15 um) = 1 mJy, well−matched to the sensitivity <strong>of</strong> IRS. For this<br />
proposal we have selected all those galaxies and AGN which have redshift<br />
(determined either spectroscopically or photometrically) larger than one. The<br />
sample includes objects confirmed to be type−1 quasars with optical spectroscopy<br />
as well as galaxies, fainter in the optical, which are probably dusty luminous<br />
starbursts. From the IRS observations we plan to investigate in detail: a) the<br />
source <strong>of</strong> the high bolometric luminosities <strong>of</strong> the most luminous objects in the<br />
distant Universe and compare them with nearby galaxies <strong>of</strong> similar luminosities,<br />
b) the physics <strong>of</strong> dust and gas in high−redshift objects using well−established<br />
mid−infrared spectral diagnostic tools, c) the role <strong>of</strong> the high−luminosity<br />
objects in current models <strong>of</strong> galaxy formation, and d) the AGN−starburst<br />
connection.<br />
Spitzer_Approved_<strong>Extragalactic</strong><br />
Printed_by_SSC<br />
Mar 25, 10 16:24 Page 674/742<br />
Spitzer Space Telescope − Directors Discretionary Time Proposal #288<br />
The Evolution <strong>of</strong> Infrared−luminous Galaxies at High Redshift<br />
Principal Investigator: Alexandra Pope<br />
Institution: U. British Columbia<br />
Technical Contact: Alexandra Pope, U. British Columbia<br />
Science Category: ULIRGS/LIRGS/HLIRGS<br />
Observing Modes: IrsStare<br />
Hours Approved: 13.2<br />
Abstract:<br />
My primary goal is to understand how different populations <strong>of</strong> infrared−luminous<br />
galaxies are related to each other, and how they all fit into our picture <strong>of</strong><br />
galaxy evolution. This goal will be addressed using upcoming deep, wide−field<br />
Spitzer and SCUBA−2 extragalactic surveys, along with multi−wavelength imaging<br />
and spectroscopic data. I will use these datasets to constrain the shape <strong>of</strong> the<br />
IR SED to obtain accurate estimates <strong>of</strong> the star formation rates and dust<br />
properties. I will use IRS observations to characterize the mid−IR SED as a<br />
function <strong>of</strong> redshift, luminosity and sample selection to separate AGN and<br />
starburst components.<br />
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