Fuse View of Primordial Helium Traces the Structure of Early Universe

About the Data

• Data Description

  Data DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
  Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.

  Technical facts about this news release: Principal Astronomers: G. A. Kriss (STScI/JHU), J. M. Shull (U. Colorado), W. Oegerle (GSFC), W. Zheng (JHU), A. F. Davidsen (JHU), A. Songaila (U. Hawaii), J. Tumlinson (U. Colorado), L. L. Cowie (U. Hawaii), J.-M. Deharveng (Laboratorie d'Astronomie Spatiale, France), S. D. Friedman (JHU), M. L. Giroux (U. Colorado), R. F. Green (KPNO/NOAO), J. B. Hutchings (Herzberg Inst. of Astrophysics,Canada), E. B. Jenkins (Princeton U. Obs.), J. W. Kruk (JHU), H. W. Moos (JHU), D. C. Morton (Herzberg Inst. of Astrophysics/Canada), K. R. Sembach (JHU), T. M. Tripp (Princeton U. Obs.) About this Object: Object Name: HE2347-4342 Object Description: Quasar R.A.: 23h 50m 34.24s Dec.: -43° 26' 00.0" Constellation: Phoenix Distance: 3,070 Mpc (10 billion light-years). Redshift: Z2.885 Magnitude: V16.1 About the Data: Instrument: HST–STIS, HST–FUSE Exposure Dates: August 21, 2000 and October 16, 2000, Exposure Time: 55 minutes (STIS); August 17 - 27, 2000, and October 11- 21, 2001, Exposure Time: 105 hours (FUSE)