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Chandra observations of galaxy zoo mergers: frequency of binary active nuclei in massive mergers

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Chandra observations of galaxy zoo mergers: frequency of binary active nuclei in massive mergers. / Teng, Stacy H.; Schawinski, Kevin; Urry, C. Megan et al.
In: The Astrophysical Journal, Vol. 753, No. 2, 165, 10.07.2012.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Teng, SH, Schawinski, K, Urry, CM, Darg, DW, Kaviraj, S, Oh, K, Bonning, EW, Cardamone, CN, Keel, WC, Lintott, CJ, Simmons, BD & Treister, E 2012, 'Chandra observations of galaxy zoo mergers: frequency of binary active nuclei in massive mergers', The Astrophysical Journal, vol. 753, no. 2, 165. https://doi.org/10.1088/0004-637X/753/2/165

APA

Teng, S. H., Schawinski, K., Urry, C. M., Darg, D. W., Kaviraj, S., Oh, K., Bonning, E. W., Cardamone, C. N., Keel, W. C., Lintott, C. J., Simmons, B. D., & Treister, E. (2012). Chandra observations of galaxy zoo mergers: frequency of binary active nuclei in massive mergers. The Astrophysical Journal, 753(2), Article 165. https://doi.org/10.1088/0004-637X/753/2/165

Vancouver

Teng SH, Schawinski K, Urry CM, Darg DW, Kaviraj S, Oh K et al. Chandra observations of galaxy zoo mergers: frequency of binary active nuclei in massive mergers. The Astrophysical Journal. 2012 Jul 10;753(2):165. doi: 10.1088/0004-637X/753/2/165

Author

Teng, Stacy H. ; Schawinski, Kevin ; Urry, C. Megan et al. / Chandra observations of galaxy zoo mergers : frequency of binary active nuclei in massive mergers. In: The Astrophysical Journal. 2012 ; Vol. 753, No. 2.

Bibtex

@article{1eab4ee377f44c6cb55a0c986f5edb2f,
title = "Chandra observations of galaxy zoo mergers: frequency of binary active nuclei in massive mergers",
abstract = "We present the results from a Chandra pilot study of 12 massive galaxy mergers selected from Galaxy Zoo. The sample includes major mergers down to a host galaxy mass of 1011 M ☉ that already have optical active galactic nucleus (AGN) signatures in at least one of the progenitors. We find that the coincidences of optically selected active nuclei with mildly obscured (N H 1.1 × 1022 cm–2) X-ray nuclei are relatively common (8/12), but the detections are too faint (<40 counts per nucleus; f 2-10 keV 1.2 × 10–13 erg s–1 cm–2) to reliably separate starburst and nuclear activity as the origin of the X-ray emission. Only one merger is found to have confirmed binary X-ray nuclei, though the X-ray emission from its southern nucleus could be due solely to star formation. Thus, the occurrences of binary AGNs in these mergers are rare (0%-8%), unless most merger-induced active nuclei are very heavily obscured or Compton thick.",
author = "Teng, {Stacy H.} and Kevin Schawinski and Urry, {C. Megan} and Darg, {Dan W.} and Sugata Kaviraj and Kyuseok Oh and Bonning, {Erin W.} and Cardamone, {Carolin N.} and Keel, {William C.} and Lintott, {Chris J.} and Simmons, {Brooke D.} and Ezequiel Treister",
year = "2012",
month = jul,
day = "10",
doi = "10.1088/0004-637X/753/2/165",
language = "English",
volume = "753",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing",
number = "2",

}

RIS

TY - JOUR

T1 - Chandra observations of galaxy zoo mergers

T2 - frequency of binary active nuclei in massive mergers

AU - Teng, Stacy H.

AU - Schawinski, Kevin

AU - Urry, C. Megan

AU - Darg, Dan W.

AU - Kaviraj, Sugata

AU - Oh, Kyuseok

AU - Bonning, Erin W.

AU - Cardamone, Carolin N.

AU - Keel, William C.

AU - Lintott, Chris J.

AU - Simmons, Brooke D.

AU - Treister, Ezequiel

PY - 2012/7/10

Y1 - 2012/7/10

N2 - We present the results from a Chandra pilot study of 12 massive galaxy mergers selected from Galaxy Zoo. The sample includes major mergers down to a host galaxy mass of 1011 M ☉ that already have optical active galactic nucleus (AGN) signatures in at least one of the progenitors. We find that the coincidences of optically selected active nuclei with mildly obscured (N H 1.1 × 1022 cm–2) X-ray nuclei are relatively common (8/12), but the detections are too faint (<40 counts per nucleus; f 2-10 keV 1.2 × 10–13 erg s–1 cm–2) to reliably separate starburst and nuclear activity as the origin of the X-ray emission. Only one merger is found to have confirmed binary X-ray nuclei, though the X-ray emission from its southern nucleus could be due solely to star formation. Thus, the occurrences of binary AGNs in these mergers are rare (0%-8%), unless most merger-induced active nuclei are very heavily obscured or Compton thick.

AB - We present the results from a Chandra pilot study of 12 massive galaxy mergers selected from Galaxy Zoo. The sample includes major mergers down to a host galaxy mass of 1011 M ☉ that already have optical active galactic nucleus (AGN) signatures in at least one of the progenitors. We find that the coincidences of optically selected active nuclei with mildly obscured (N H 1.1 × 1022 cm–2) X-ray nuclei are relatively common (8/12), but the detections are too faint (<40 counts per nucleus; f 2-10 keV 1.2 × 10–13 erg s–1 cm–2) to reliably separate starburst and nuclear activity as the origin of the X-ray emission. Only one merger is found to have confirmed binary X-ray nuclei, though the X-ray emission from its southern nucleus could be due solely to star formation. Thus, the occurrences of binary AGNs in these mergers are rare (0%-8%), unless most merger-induced active nuclei are very heavily obscured or Compton thick.

U2 - 10.1088/0004-637X/753/2/165

DO - 10.1088/0004-637X/753/2/165

M3 - Journal article

VL - 753

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 165

ER -