R. Barvainis et al., DETECTION OF CO-(3-2) EMISSION AT Z=2.64 FROM THE GRAVITATIONALLY LENSED QUASAR MG-0414+0534, The Astrophysical journal, 492(1), 1998, pp. 13-16
We have detected CO (3-2) line emission from the gravitationally lense
d quasar MG 0414+0534 at redshift 2.64, using the IRAM Plateau de Bure
Interferometer. The line is broad, with Delta v(FWHM) = 580 km s(-1).
The velocity-integrated CO flux is comparable to, but somewhat smalle
r than, that of IRAS F10214+4724 and the Cloverleaf quasar (H1413+117)
, both of which are at similar redshifts. The lensed components Al + A
2 and B were resolved, and separate spectra are presented for each. We
also observed the unlensed radio-quiet quasar PG 1634+706 at z = 1.33
, finding no significant CO emission.