Properties of the Z =2.73 galaxy, MS1512-CB58

Sara R. Heap, Ivan Hubeny, Thierry M. Lanz

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


MS1512-cB58 is an z = 2.73 galaxy whose apparent brightness is amplified by 30-50X due to gravitationally lensing. The restframe far-UV spectrum of cB58 that was obtained by Keck-I/LRIS is 'one of the best ultraviolet spectra of a starburst galaxy obtained at any redshift' (Pettini et al., 2000). We have analyzed and modeled the spectrum of this galaxy in order to learn the properties of high-redshift galaxies. We find that our model spectrum is a near match to the observed spectrum of cB58 if the galaxy has a SMC-like metallicity, and has a Salpeter IMF extending up to ∼ 100 M. The spectrum of cB58 also shows many absorption lines formed in a giant, expanding gas shell surrounding the star-forming complex. We show preliminary findings of the properties of the giant HII region based on our CLOUDSPEC model.

Original languageEnglish (US)
Pages (from-to)263-266
Number of pages4
JournalAstrophysics and Space Science
StatePublished - Jan 1 2001


  • Cosmology: observations
  • Galaxies: evolution
  • Galaxies: individual (MS1512-cB58)
  • Ultraviolet

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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