Detection of molecular gas in the quasar BR1202 - 0725 at redshift z = 4.69

Details Detection of molecular gas in the quasar BR1202 - 0725 at redshift z = 4.69 Detection of molecular gas in the quasar BR1202 - 0725 at redshift z = 4.69

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996natur.382..426o&link_type=abstract

Nature, Volume 382, Issue 6590, pp. 426-428 (1996).

Computer Science

146

Scientific paper

ALTHOUGH great efforts1-8 have been made to locate molecular gas-the material out of which stars form-in the early Universe, there have been only two firm detections at high redshift. Both are gravitationally lensed objects at redshift z ~ 2.5 (refs 9-14). Here we report the detection of CO emission from the radio-quiet quasar BR1202 - 0725, which is at redshift z = 4.69. From the observed CO luminosity, we estimate that almost 1011 solar masses of molecular hydrogen are associated with the quasar; this is comparable to the stellar mass of a present-day luminous galaxy. Our results suggest that BR1202 - 0725 is a massive galaxy, in which the gas is largely concentrated in the central region, and that it is currently undergoing a large burst of star formation.

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