Galaxy Environments in the UKIDSS Ultra Deep Survey (UDS)

Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Accepted for publication in MNRAS. The paper contains 9 pages, 11 figures and 1 table

Scientific paper

We present a study of galaxy environments to z~2, based on a sample of over 33,000 K-band selected galaxies detected in the UKIDSS Ultra Deep Survey (UDS). The combination of infrared depth and area in the UDS allows us to extend previous studies of galaxy environment to z>1 without the strong biases associated with optical galaxy selection. We study the environments of galaxies divided by rest frame (U-B) colours, in addition to `passive' and `star-forming' subsets based on template fitting. We find that galaxy colour is strongly correlated with galaxy overdensity on small scales (<1Mpc diameter), with red/passive galaxies residing in significantly denser environments than blue/star-forming galaxies to z~1.5. On smaller scales (<0.5Mpc diameter) we also find a relationship between galaxy luminosity and environment, with the most luminous blue galaxies at z~1 inhabiting environments comparable to red, passive systems at the same redshift. Monte Carlo simulations demonstrate that these conclusions are robust to the uncertainties introduced by photometric redshift errors.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Galaxy Environments in the UKIDSS Ultra Deep Survey (UDS) 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 Galaxy Environments in the UKIDSS Ultra Deep Survey (UDS), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxy Environments in the UKIDSS Ultra Deep Survey (UDS) will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-265856

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.