Star Formation in Quasar Host Galaxies at Redshift 6: Millimeter Surveys and New Insights from ALMA
arXiv:1210.0242 · doi:10.1017/S1743921313001002
Abstract
We have been carrying out a systematic survey of the star formation and ISM properties in the host galaxies of z~6 quasars. Our 250 GHz observations, together with available data from the literature, yield a sample of 14 z~6 quasars that are bright in millimeter dust continuum emission with estimated FIR luminosities of a few 10^12 to 10^13 Lsun. Most of these millimeter-detected z~6 quasars have also been detected in molecular CO line emission, indicating molecular gas masses on order of 10^10 Msun. We have searched for [C II] 158 micron fine structure line emission toward four of the millimeter bright z~6 quasars with ALMA and all of them have been detected. All these results suggest massive star formation at rates of about 600 to 2000 Msun/yr over the central few kpc region of these quasar host galaxies.
4 pages, 2 figures, submitted to Preceedings IAU Symposium No. 292 "Molecular Gas, Dust, and Star Formation in Galaxies", update for references, figure, and the ALMA data tag
References in corpus (6)
- Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey
- A Kiloparsec-Scale Hyper-Starburst in a Quasar Host Less than 1 Gigayear after the Big Bang
- Black hole masses and enrichment of z ~ 6 SDSS quasars
- CO(1-0) in z >/~ 4 Quasar Host Galaxies: No Evidence for Extended Molecular Gas Reservoirs
- Thermal Emission from Warm Dust in the Most Distant Quasars
- [CII] line emission in massive star-forming galaxies at z=4.7