Spitzer Observations of High Redshift Radio Galaxies
Abstract
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 1.6μm. The stellar luminosities are found to be consistent with that of a giant elliptical with a stellar mass of 10^(11−12)M_⊙. The mean stellar mass remains constant at 10^(11.5)M_⊙ 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.
Additional Information
© 2008 Astronomical Society of the Pacific. We thank the LOC for organising a great conference and were particularly impressed by the nifty design of the webpage. We also liked Harry's conference haircut.Attached Files
Published - Seymour2008p8616Second_Annual_Spitzer_Science_Center_Conference_Infrared_Diagnostics_Of_Galaxy_Evolution.pdf
Files
| Name | Size | Download all |
|---|---|---|
|
md5:f06fdb12200dff540b1466a111e20a62
|
228.2 kB | Preview Download |
Additional details
- Eprint ID
- 19207
- Resolver ID
- CaltechAUTHORS:20100728-095131612
- Created
-
2010-08-02Created from EPrint's datestamp field
- Updated
-
2020-04-21Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)
- Series Name
- ASP Conference Series