Dust and molecular gas in high redshift radio galaxies
نویسنده
چکیده
This review discusses the current status of our knowledge of emission by dust and molecular gas in high redshift radio galaxies, and the uncertainties in the derivation of physical parameters from these data. The similarity of far-infrared luminous, gas-rich high redshift radio galaxies and local ultraluminous infrared galaxies (ULIGs) is discussed. Given that local ULIGs rapidly convert most of their gas reservoir into stars, far-infrared luminous high-z radio galaxies are likely undergoing immense bursts of star formation, possibly accounting for a large fraction of the final stellar populations in these systems. These results are discussed in the context of formation scenarios of massive galaxies.
منابع مشابه
INTERFEROMETRIC CO OBSERVATIONS OF SUBMILLIMETER-FAINT, RADIO-SELECTED STARBURST GALAXIES AT z 2
High-redshift, dust-obscured galaxies, selected to be luminous in the radio but relatively faint at 850 m, appear to represent a different population from the ultraluminous submillimeter-bright population. They may be star-forming galaxies with hotter dust temperatures, or they may have lower far-infrared luminosities and larger contributions from obscured active galactic nuclei (AGNs). Here we...
متن کاملOn the Effect of the Cosmic Microwave Background in High-redshift (sub-)millimeter Observations
Modern (sub-)millimeter interferometers enable the measurement of the cool gas and dust emission of highredshift galaxies (z > 5). However, at these redshifts the cosmic microwave background (CMB) temperature is higher, approaching, and even exceeding, the temperature of cold dust and molecular gas observed in the local Universe. In this paper, we discuss the impact of the warmer CMB on (sub-)m...
متن کاملThe hyperluminous infrared quasar 3C 318 and its implications for interpreting sub-mm detections of high–redshift radio galaxies
We present near-infrared spectroscopy and imaging of the compact steep-spectrum radio source 3C 318 which shows it to be a quasar at redshift z = 1.574 (the z = 0.752 value previously reported is incorrect). 3C 318 is an IRAS, ISO and SCUBA source so its new redshift makes it the most intrinsically luminous far-infrared (FIR) source in the 3C catalogue (there is no evidence of strong gravitatio...
متن کاملDetection of Co(4–3), Co(9–8), and Dust Emission in the Bal Quasar Apm 08279+5255 at a Redshift of 3.9
We detected with the IRAM interferometer the lines of CO(4–3) and CO(9–8) from the recently-discovered broad absorption line quasar APM 08279+5255. The molecular lines are at a redshift of 3.9110, which we take to be the true cosmological redshift of the quasar’s host galaxy. This means the quasar emission lines at z = 3.87 are blueshifted by a kinematic component of 2500 km s, and, along with ...
متن کاملProbing the Interstellar Medium of Z ∼ 1 Ultra-luminous Infrared Galaxies through Interferometric Observations of Co and Spitzer Mid-infrared Spectroscopy
We explore the relationship between gas, dust and star formation in a sample of 12 ultra-luminous infrared galaxies (ULIRGs) at high redshift compared to a similar sample of local galaxies. We present new CO observations and/or Spitzer mid-IR spectroscopy for 6 70μm-selected galaxies at z ∼ 1 in order to quantify the properties of the molecular gas reservoir, the contribution of an active galac...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998