Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-05-18
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
Submitted to Astrophysical Journal Supplement Series; Revised version, subsequent to referee report
Scientific paper
The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) is designed to document the first third of galactic evolution, over the approximate redshift (z) range 8--1.5. It will image >250,000 distant galaxies using three separate cameras on the Hubble Space Telescope, from the mid-ultraviolet to the near-infrared, and will find and measure Type Ia supernovae at z>1.5 to test their accuracy as standardizable candles for cosmology. Five premier multi-wavelength sky regions are selected, each with extensive ancillary data. The use of five widely separated fields mitigates cosmic variance and yields statistically robust and complete samples of galaxies down to a stellar mass of 10^9 M_\odot to z \approx 2, reaching the knee of the ultraviolet luminosity function (UVLF) of galaxies to z \approx 8. The survey covers approximately 800 arcmin^2 and is divided into two parts. The CANDELS/Deep survey (5\sigma\ point-source limit H=27.7 mag) covers \sim 125 arcmin^2 within GOODS-N and GOODS-S. The CANDELS/Wide survey includes GOODS and three additional fields (EGS, COSMOS, and UDS) and covers the full area to a 5\sigma\ point-source limit of H \gtrsim 27.0 mag. Together with the Hubble Ultra Deep Fields, the strategy creates a three-tiered "wedding cake" approach that has proven efficient for extragalactic surveys. Data from the survey are nonproprietary and are useful for a wide variety of science investigations. In this paper, we describe the basic motivations for the survey, the CANDELS team science goals and the resulting observational requirements, the field selection and geometry, and the observing design. The Hubble data processing and products are described in a companion paper.
Acquaviva Viviana
Alexander David M.
Almaini Omar
Ashby Matthew L. N.
Barden Marco
No associations
LandOfFree
CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-68169