CO emission from the Z = 3.137 damped Ly-alpha system toward PC 1643+4631A

Details CO emission from the Z = 3.137 damped Ly-alpha system toward PC 1643+4631A CO emission from the Z = 3.137 damped Ly-alpha system toward PC 1643+4631A

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...433l...5f&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 433, no. 1, p. L5-L8

Astronomy and Astrophysics

Astronomy

15

Absorption Spectra, Carbon Monoxide, Emission Spectra, Galactic Evolution, Lyman Alpha Radiation, Quasars, Radio Astronomy, Red Shift, Astronomical Models, Astronomical Spectroscopy, Interstellar Gas, Lyman Spectra, Mathematical Models, Molecular Excitation, Radio Telescopes, Stellar Luminosity

Scientific paper

We report the detection of CO (1-0) and CO(3-2) emission observed toward the quasar PC 1643+4631A at a redshift corresponding to the z = 3.137 damped Ly-alpha system previously identified in the optical spectrum of the object. This is the highest redshift CO detection reported to date. The CO emission lines have a velocity width greater than or approximately equal to 700 km/s full width at zero intensity (FWZI). The CO line luminosities are approximately 108 solar luminosity, and the mass of molecular gas is approximately 1012 solar mass. Radiative transfer calculations using a large velocity gradient model imply a gas kinetic temperature of approximately 30 K. The models and observations together indicate that the angular size of the higher excitation CO(3-2) emission region is approximately 0.3-0.5 times that of the lower excitation CO(1-0) emission region; that is, the gas is appreciably clumped.

Affiliated with

Also associated with

No associations

Rating

CO emission from the Z = 3.137 damped Ly-alpha system toward PC 1643+4631A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with CO emission from the Z = 3.137 damped Ly-alpha system toward PC 1643+4631A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CO emission from the Z = 3.137 damped Ly-alpha system toward PC 1643+4631A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1788761