Spitzer observations of high redshift radio galaxies

被引：0

作者：

Seymour, N. ^{[1
]}

Stern, D. ^{[1
,2
]}

De Breuck, C. ^{[3
]}

Vernet, J. ^{[3
]}

Fosbury, R. ^{[3
]}

Rettura, A. ^{[3
,4
]}

Zirm, A. ^{[5
]}

Rocca-Volmerange, B. ^{[4
]}

Lacy, M. ^{[1
]}

Teplitz, H. ^{[1
]}

Dey, A. ^{[6
]}

Dickinson, A. ^{[6
]}

van Brengel, W. ^{[7
]}

Miley, G. ^{[8
]}

Rottgering, H. ^{[8
]}

Eisenhardt, P. ^{[2
]}

McCarthy, P. ^{[9
]}

De Breuck, F. ^{[3
]}

Vernet, L. ^{[3
]}

机构：

[1] CALTECH, Spitzer Sci Ctr, Mail Code 220-6,1200 E Calif Blvd, Pasadena, CA 91125 USA

[2] Jet Prop Lab, Pasadena, CA 91125 USA

[3] ESO, Munich, Germany

[4] IAP, Delhi, India

[5] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[6] Natl Opt Astron Observ, Tucson, AZ 85719 USA

[7] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[8] Leiden Univ, NL-2300 RA Leiden, Netherlands

[9] OCIW, Pittsburgh, PA 15213 USA

来源：

SECOND ANNUAL SPITZER SCIENCE CENTER CONFERENCE: INFRARED DIAGNOSTICS OF GALAXY EVOLUTION | 2008年 / 381卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of a comprehensive Spitzer survey of 70 radio galaxies across 1 < z < 5.2. Using IRAC, IRS and MIPS imaging we determine the rest-frame AGN contribution to the stellar emission peak at 1.6 mu m. The stellar luminosities are found to be consistent with that of a giant elliptical with a stellar mass of 10(11-12) M-circle dot. The mean stellar mass remains constant at 10(11-5) M-circle dot up to z = 3 indicating that the upper end of the mass function is already in place at redshift 3. The mid-IR luminosities imply bolometric IR luminosities that would classify most sources as ULIRGs. The mid-IR to radio luminosity generally correlate implying a common origin for these emissions. The ratio is higher than that found for lower redshift, i.e. z < 1, radio galaxies.

引用

页码：398 / +

页数：2

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