CO in a Starburst Galaxy at High Z

HiZ CO Starburst CO in a HiZ Starburst

From Silk and Spaans ApJ 488, L79 (1997) Fig 2.: Redshift dependence of the CO emission spectrum for a starburst galaxy containing 3 x 10^5 Orion regions. The three red lines indicate the range in line intensities resulting from metallicities equal to 4 and 1/4 times solar. Note the rough constancy of line luminosity with redshift.