The overlap and clustering between Chandra and SCUBA sources

Omar Almaini; Jim Dunlop; Andy Lawrence; James Manners; Olivia Johnson; Rob Ivison; Susie Scott; John Peacock; Bob Mann

The overlap and clustering between Chandra and SCUBA sources

Omar Almaini, Jim Dunlop, Andy Lawrence, James Manners, Olivia Johnson, Rob Ivison, Susie Scott, John Peacock, Bob Mann

School of Physics and Astronomy

Research output: Contribution to conference › Abstract › peer-review

Abstract / Description of output

We present results from a unique deep Chandra survey, which coincides with the largest sub-mm survey ever undertaken (that of the 8mJy SCUBA consortium). In agreement with other recent findings, we confirm that the direct overlap between these populations is small. Only 1/17 SCUBA sources are detected by Chandra, or 3/33 if the SCUBA detection limit is relaxed to 3σ. If the remaining SCUBA sources contain AGN they must either be very weak or obscured by Compton thick material. Despite this small overlap, we find evidence for strong clustering between these populations. The AGN and SCUBA sources therefore appear to trace the same large scale structure, but in general are not concurrent. Given the strong suspicion that every massive galaxy has undergone a luminous quasar phase, we suggest that this must be essentially distinct from the major episode of star formation.

Original language	English
Pages	55
Publication status	Published - 1 Sept 2001

Keywords / Materials (for Non-textual outputs)

EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

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http://adsabs.harvard.edu/abs/2001tysc.confE..55A

Cite this

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title = "The overlap and clustering between Chandra and SCUBA sources",

abstract = "We present results from a unique deep Chandra survey, which coincides with the largest sub-mm survey ever undertaken (that of the 8mJy SCUBA consortium). In agreement with other recent findings, we confirm that the direct overlap between these populations is small. Only 1/17 SCUBA sources are detected by Chandra, or 3/33 if the SCUBA detection limit is relaxed to 3σ. If the remaining SCUBA sources contain AGN they must either be very weak or obscured by Compton thick material. Despite this small overlap, we find evidence for strong clustering between these populations. The AGN and SCUBA sources therefore appear to trace the same large scale structure, but in general are not concurrent. Given the strong suspicion that every massive galaxy has undergone a luminous quasar phase, we suggest that this must be essentially distinct from the major episode of star formation.",

keywords = "EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS",

author = "Omar Almaini and Jim Dunlop and Andy Lawrence and James Manners and Olivia Johnson and Rob Ivison and Susie Scott and John Peacock and Bob Mann",

note = "Two Years of Science with Chandra, Abstracts from the Symposium held in Washington, DC, 5-7 September, 2001, meeting abstract.",

year = "2001",

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language = "English",

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TY - CONF

T1 - The overlap and clustering between Chandra and SCUBA sources

AU - Almaini, Omar

AU - Dunlop, Jim

AU - Lawrence, Andy

AU - Manners, James

AU - Johnson, Olivia

AU - Ivison, Rob

AU - Scott, Susie

AU - Peacock, John

AU - Mann, Bob

N1 - Two Years of Science with Chandra, Abstracts from the Symposium held in Washington, DC, 5-7 September, 2001, meeting abstract.

PY - 2001/9/1

Y1 - 2001/9/1

N2 - We present results from a unique deep Chandra survey, which coincides with the largest sub-mm survey ever undertaken (that of the 8mJy SCUBA consortium). In agreement with other recent findings, we confirm that the direct overlap between these populations is small. Only 1/17 SCUBA sources are detected by Chandra, or 3/33 if the SCUBA detection limit is relaxed to 3σ. If the remaining SCUBA sources contain AGN they must either be very weak or obscured by Compton thick material. Despite this small overlap, we find evidence for strong clustering between these populations. The AGN and SCUBA sources therefore appear to trace the same large scale structure, but in general are not concurrent. Given the strong suspicion that every massive galaxy has undergone a luminous quasar phase, we suggest that this must be essentially distinct from the major episode of star formation.

AB - We present results from a unique deep Chandra survey, which coincides with the largest sub-mm survey ever undertaken (that of the 8mJy SCUBA consortium). In agreement with other recent findings, we confirm that the direct overlap between these populations is small. Only 1/17 SCUBA sources are detected by Chandra, or 3/33 if the SCUBA detection limit is relaxed to 3σ. If the remaining SCUBA sources contain AGN they must either be very weak or obscured by Compton thick material. Despite this small overlap, we find evidence for strong clustering between these populations. The AGN and SCUBA sources therefore appear to trace the same large scale structure, but in general are not concurrent. Given the strong suspicion that every massive galaxy has undergone a luminous quasar phase, we suggest that this must be essentially distinct from the major episode of star formation.

KW - EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

M3 - Abstract

SP - 55

ER -

The overlap and clustering between Chandra and SCUBA sources

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Keywords / Materials (for Non-textual outputs)

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