Abstract
view Abstract Citations (8) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Possible Detection of a CO Emission Line from a Quasar at Z = 2.88 Yamada, Toru ; Aoki, Kentaro ; Tomita, Akihiko ; Takata, Tadafumi ; Ohta, Kouji ; Yoshida, Michitoshi Abstract We observed a high-redshift luminous radio-quiet quasar Q1235 +0857 at z = 2.880 with the Nobeyama 45 m radio telescope aiming at detection of a redshifted ^12^CO (J = 3-2) emission line. We have marginally (3-5 σ significance) detected an emission-line-like feature at ~89.8 GHz (z = 2.883) with ~150 km s^-1^ width (FWHM). Adopting the standard CO to H_2_ conversion factor obtained for galactic giant molecular clouds, the CO luminosity can be roughly converted to H_2_ gas mass of ~10^12^ M_sun_, which is much larger than the molecular gas content of any galaxies at present epoch and nearly equal to the total stellar mass of a giant elliptical galaxy. Although we should note that a confirmation of the detection by an independent facility is absolutely needed, the results discussed in this Letter would support the idea that luminous quasars at high redshift are associated with the massive galaxies in their forming phase. Publication: The Astrophysical Journal Pub Date: January 1995 DOI: 10.1086/187701 Bibcode: 1995ApJ...438L...5Y Keywords: Carbon Monoxide; Emission Spectra; Line Spectra; Quasars; Radio Astronomy; Radio Spectra; Red Shift; Astronomical Spectroscopy; Extremely High Frequencies; Galactic Evolution; Hydrogen; Luminosity; Millimeter Waves; Molecular Clouds; Starburst Galaxies; Stellar Mass; Astronomy; GALAXIES: FORMATION; GALAXIES: QUASARS: EMISSION LINES; GALAXIES: QUASARS: INDIVIDUAL ALPHANUMERIC: Q1235; 0857; GALAXIES: STARBURST full text sources ADS | data products SIMBAD (4) NED (1)
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