The Molecular Disk in the Cloverleaf Quasar
نویسندگان
چکیده
منابع مشابه
The Molecular Disk in the Cloverleaf Quasar
We propose a new interpretation for the CO emitting region of the Cloverleaf (H1413+1143), a gravitationally lensed QSO. We proceed by fitting a two-galaxy lensing model directly to the IRAM CO(7-6) data rather than to the optical HST image. From the fit we infer that the CO source might be a disk-like structure with a characteristic radius R ≥ 790 pc, a value similar to that of the CO emitting...
متن کاملThe Warm Molecular Gas around the Cloverleaf Quasar
We present the first broadband λ = 1mm spectrum toward the z = 2.56 Cloverleaf Quasar, obtained with Z-Spec, a 1-mm grating spectrograph on the 10.4-meter Caltech Submillimeter Observatory. The 190–305 GHz observation band corresponds to rest-frame 272 to 444 μm, and we measure the dust continuum as well as all four transitions of carbon monoxide (CO) lying in this range. The power-law dust emi...
متن کاملMultiple CO Transitions, CI, and HCN from the Cloverleaf Quasar
New millimeter-wavelength emission lines are reported for the Cloverleaf (H1413+117), a gravitationally lensed quasar at redshift 2.56. High signal-to-noise ratio spectra of four lines in CO (J = 3 → 2, 4 → 3, 5 → 4, and 7 → 6) have been obtained and are modelled using an escape probability formalism. The line brightness temperatures are flat or rising between CO(3 → 2) and CO(4 → 3) and then d...
متن کاملGas and Dust in the Cloverleaf Quasar at Redshift 2.5
We observed the upper fine structure line of neutral carbon, C I(P2 →P1) (νrest = 809 GHz), the 12CO(J=3→2) line (νrest = 345 GHz) and the 1.2 mm continuum emission from H1413+117 (Cloverleaf quasar, z = 2.5) using the IRAM interferometer. Together with the detection of the lower fine structure line (Barvainis et al. 1997), the Cloverleaf quasar is now only the second extragalactic system, besi...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2003
ISSN: 0004-637X,1538-4357
DOI: 10.1086/375050