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PKS 0405-123 COS Spectrum

PKS 0405-123 COS Spectrum
Spectrum of PKS 0405-123 quasar, showing evidence of intergalactic clouds at different distances

About the Object

  • Constellation
    ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
    Eridanus
  • Distance
    DistanceThe physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.
    7billion-8 billion light-years (~2 billion parsecs)

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.
    The Hubble spectrum was created from data from proposal 11508: K. Noll (STScI) and J. Green, C. Froning, and B. Keeney (University of Colorado, Boulder). Acknowledgments for PKS 0405-123 Observers: K. Noll (STScI) and J. Green, C. Froning, and B. Keeney (University of Colorado, Boulder) Data Analysis: C. Froning and J. Green (University of Colorado, Boulder) Image Composition: Z. Levay and L. Frattare (STScI) Text: L. Frattare, D. Weaver, and R. Villard (STScI) Illustrations: A. Feild and Z. Levay (STScI) Science Consultants: M. Livio (STScI) and C. Froning and J. Green (University of Colorado, Boulder)
  • Instrument
    InstrumentThe science instrument used to produce the data.
    HST>COS/FUV
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    August 3, 2009, Exposure Time: 2.7 hours
  • Filters
    FiltersThe camera filters that were used in the science observations.
    G130M (130nm)
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    PKS 0405-123
  • Object Description
    Object DescriptionThe type of astronomical object.
    Quasar/Active Galaxy
  • Release Date
    September 9, 2009
  • Science Release
    Hubble Opens New Eyes on the Universe
  • Credits
    NASA, ESA, and the Hubble SM4 ERO Team

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Details

Last Updated
Feb 17, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, MD
claire.andreoli@nasa.gov