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Compass Image for Dust-Reddened Quasars

Compass Image for Dust-Reddened Quasars

About the Object

  • 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.
    Redshifts: Between 1.7 and 2.3

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.
    Data were obtained from the HST proposals 12942, PI: E. Glikman (Middlebury College) et al. The science team comprises:T E. Glikman (Middlebury College), B. Simmons (University of Oxford), M. Mailly (Middlebury College), K. Schawinski (Institute for Astronomy, ETH Zurich), C.M. Urry (Yale University), and M. Lacy (NRAO Charlottesville).
  • Instrument
    InstrumentThe science instrument used to produce the data.
    HST>WFC3/IR
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    September 2012 through June 2013
  • Filters
    FiltersThe camera filters that were used in the science observations.
    F105W (Y), F125W (J), and F160W (H)
  • Object Description
    Object DescriptionThe type of astronomical object.
    Dust-Reddened Quasars
  • Release Date
    June 18, 2015
  • Science Release
    Hubble Sees the ‘Teenage Years’ of Quasars
    Read the release
  • Credit
    Image: NASA, ESA, and Z. Levay (STScI); Science: NASA, ESA, and E. Glikman (Middlebury College, Vermont)

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Compass Image for Dust-Reddened Quasars
Color Info
Color InfoA brief description of the methods used to convert telescope data into the color image being presented.

These images are composites of separate exposures acquired by the WFC3 instruments on the Hubble Space Telescope. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Blue: F105W (Y) or F125W (J), Orange: F160W (H)

Compass and Scale
Compass and ScaleAn astronomical image with a scale that shows how large an object is on the sky, a compass that shows how the object is oriented on the sky, and the filters with which the image was made.

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Details

Last Updated
Mar 28, 2025
Contact
Media

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

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