Overdensities of SMGs around WISE-selected, ultraluminous, high-redshift AGNs

Journal Article

2017

Permanent link to this Item
http://hdl.handle.net/11427/34576
Files
JonesSuzyF_OverdensitiesSM_2017.pdf (770.66 KB)
Authors
Jones, Suzy F
Blain, Andrew W
Wright, Edward L
Jarrett, Tom
Assef, Roberto J
Eisenhardt, Peter
Lonsdale, Carol
Condon, James
Farrah, Duncan
Tsai, Chao-Wei
Bridge, Carrie
Wu, Jingwen
Journal Title

Monthly Notices of the Royal Astronomical Society

Link to Journal
https://dx.doi.org/10.1093/mnras/stx1141
Journal ISSN
Volume Title
Publisher
Publisher
Department
Department of Astronomy
Faculty
Faculty of Science
License
Series
Abstract
We investigate extremely luminous dusty galaxies in the environments around Wide-field Infrared Survey Explorer (WISE)-selected hot dust-obscured galaxies (Hot DOGs) and WISE/radio-selected active galactic nuclei (AGNs) at average redshifts of z = 2.7 and 1.7, respectively. Previous observations have detected overdensities of companion submillimetre-selected sources around 10 Hot DOGs and 30 WISE/radio AGNs, with overdensities of similar to 2-3 and similar to 5-6, respectively. We find that the space densities in both samples to be overdense compared to normal star-forming galaxies and submillimetre galaxies (SMGs) in the Submillimetre Common-User Bolometer Array 2 (SCUBA-2) Cosmology Legacy Survey (S2CLS). Both samples of companion sources have consistent mid-infrared (mid-IR) colours and mid-IR to submm ratios as SMGs. The brighter population around WISE/radio AGNs could be responsible for the higher overdensity reported. We also find that the star formation rate densities are higher than the field, but consistent with clusters of dusty galaxies. WISE-selected AGNs appear to be good signposts for protoclusters at high redshift on arcmin scales. The results reported here provide an upper limit to the strength of angular clustering using the two-point correlation function. Monte Carlo simulations show no angular correlation, which could indicate protoclusters on scales larger than the SCUBA-2 1.5-arcmin scale maps.
Description
Keywords
Science &
Technology
submillimetre: galaxies
DEEP SUBMILLIMETER SURVEY
COSMOLOGY LEGACY SURVEY
STAR-FORMING GALAXIES
SCUBA SUPER-MAP
DEGREE EXTRAGALACTIC SURVEY
ACTIVE GALACTIC NUCLEI
SIMILAR-TO 7
NUMBER COUNTS
DUSTY GALAXIES
Physical Sciences
INFRARED PROPERTIES
Journal Article
Astronomy &
Astrophysics
galaxies: active
galaxies: clusters: general
galaxies: high-redshift
quasars: general
infrared: galaxies

Reference:

Jones, S.F., Blain, A.W., Assef, R.J., Eisenhardt, P., Lonsdale, C., Condon, J., Farrah, D. & Tsai, C. et al. 2017. Overdensities of SMGs around WISE-selected, ultraluminous, high-redshift AGNs. Monthly Notices of the Royal Astronomical Society. 469(4):4565 - 4577. http://hdl.handle.net/11427/34576

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