Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey

Short description: Hubble Space Telescope project

Hubble image of a field of galaxies with high redshift (z = 7.7).^[1]

The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) is the largest project in the history of the Hubble Space Telescope, with 902 assigned orbits (about 60 continuous days^[2]) of observing time. It was carried out between 2010 and 2013 with two cameras on board Hubble – WFC3 and ACS – and aims to explore galactic evolution in the early Universe, and the very first seeds of cosmic structure at less than one billion years after the Big Bang.^[3]

Science goals

CANDELS is designed to document the first third of galactic evolution – on the redshifts from 8 to 1.5 – via deep imaging of more than 250,000 galaxies. Another goal is to find the first Type Ia supernova beyond z > 1.5 and establish their accuracy as standard candles for cosmology. Additional "daytime" WFC3/UV/Vis exposures in the GOODS-N field were conducted to take advantage of its continuous viewing zone opportunity.^[4]

Facility and instruments

CANDELS' main instrument is the Wide Field Camera 3, a near-infrared camera installed on Hubble in May 2009. WFC3 works in tandem with the visible-light Advanced Camera for Surveys, which together gives unprecedented panchromatic coverage of galaxies from optical wavelengths to the near-infrared.^[5]

References

↑ "Astronomers Set a New Galaxy Distance Record". 6 May 2015. https://www.spacetelescope.org/images/opo1522a/. Retrieved 14 June 2015.
↑ "Hyperwall: CANDELS UDF". 28 January 2019. https://svs.gsfc.nasa.gov/31020.
↑ "Hubble explores the origins of modern galaxies". 15 August 2013. https://www.spacetelescope.org/news/heic1315/.
↑ "Science Goals". University of California Observatories. http://arcoiris.ucolick.org/candels/survey/Science_Goals.html.
↑ "About". University of California Observatories. http://arcoiris.ucolick.org/candels/survey/Science_Goals.html.

External links

CANDELS website by University of California Observatories

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Original source: https://en.wikipedia.org/wiki/Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey. Read more

[1] "Astronomers Set a New Galaxy Distance Record". 6 May 2015. https://www.spacetelescope.org/images/opo1522a/. Retrieved 14 June 2015.

[2] "Hyperwall: CANDELS UDF". 28 January 2019. https://svs.gsfc.nasa.gov/31020.

[3] "Hubble explores the origins of modern galaxies". 15 August 2013. https://www.spacetelescope.org/news/heic1315/.

[4] "Science Goals". University of California Observatories. http://arcoiris.ucolick.org/candels/survey/Science_Goals.html.

[5] "About". University of California Observatories. http://arcoiris.ucolick.org/candels/survey/Science_Goals.html.