Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasj...47..739o&link_type=abstract
Publications of the Astronomical Society of Japan, v.47, p.739-743.
Astronomy and Astrophysics
Astronomy
1
Co Emission Line, Galaxies: Individual (Mg 0414+0534), Gravitational Lenses, Quasars
Scientific paper
MG 0414+0534 is a gravitational-lens system at z = 2.64 having a steep power-law continuum and an unusually red color in optical light. We searched for redshifted (12) CO (J = 3--2) emission from MG 0414+0534 and (12) CO (J=1--0) emission from its lensing galaxy at z = 0.468 using the Nobeyama 45-m radio telescope. No significant emission was detected with a rms noise of 5mK at a velocity resolution of 20 km s(-1) . Assuming a velocity width of 400 km s(-1) , we obtained 3 sigma upper limits on the molecular gas mass of 1.1 times 10(11) h(-2) MO for MG 0414+0534 and 5.7 times 10(10) h(-2) MO for the lensing galaxy (q_0 = 0.5, H_0 = 100\ h\ km s(-1) Mpc(-1) ), adopting a standard Galactic CO-to-H_2 conversion factor and neglecting the influence of the lensing event. We examined two views: MG 0414+0534 is a quasar reddened by the interstellar matter in the lensing galaxy or by the interstellar matter surrounding the power-law source.
Ikeuchi Satoru
Kawabe Ryohei
Kono Kotaro
Ohta Kouji
Turner Edwin L.
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