PKS B1740-517: an ALMA view of the cold gas feeding a distant interacting young radio galaxy

J. R. Allison, E. K. Mahony, V. A. Moss, E. M. Sadler, M. T. Whiting, R. F. Allison, J. Bland-Hawthorn, S. J. Curran, B. H. C. Emonts, C. D. P. Lagos, R. Morganti, G. Tremblay, M. Zwaan, C. S. Anderson, J. D. Bunton, M. A. Voronkov

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Cold neutral gas is a key ingredient for growing the stellar and central black hole mass in galaxies throughout cosmic history. We have used the Atacama Large Millimetre Array to detect a rare example of redshifted (CO)-C-12 (2-1) absorption in PKS B1740-517, a young (t similar to 1.6 x 10(3) yr) and luminous (L-5GH approximate to 6.6 x 10(43) erg s(-1)) radio galaxy at z = 0.44 that is undergoing a tidal interaction with at least one lower mass companion. The coincident H I 21-cm and molecular absorption have very similar line profiles and reveal a reservoir of cold gas (M-gas similar to 10(7) -10(8) M-circle dot), likely distributed in a disc or ring within a few kiloparsecs of the nucleus. A separate HI component is kinematically distinct and has a very narrow line width (Delta u(FWHM)

Original languageEnglish
Pages (from-to)2934-2949
Number of pages16
JournalMonthly Notices of the Royal Astronomical Society
Volume482
Issue number3
DOIs
Publication statusPublished - Jan 2019

Cite this

Allison, J. R., Mahony, E. K., Moss, V. A., Sadler, E. M., Whiting, M. T., Allison, R. F., ... Voronkov, M. A. (2019). PKS B1740-517: an ALMA view of the cold gas feeding a distant interacting young radio galaxy. Monthly Notices of the Royal Astronomical Society, 482(3), 2934-2949. https://doi.org/10.1093/mnras/sty2852
Allison, J. R. ; Mahony, E. K. ; Moss, V. A. ; Sadler, E. M. ; Whiting, M. T. ; Allison, R. F. ; Bland-Hawthorn, J. ; Curran, S. J. ; Emonts, B. H. C. ; Lagos, C. D. P. ; Morganti, R. ; Tremblay, G. ; Zwaan, M. ; Anderson, C. S. ; Bunton, J. D. ; Voronkov, M. A. / PKS B1740-517 : an ALMA view of the cold gas feeding a distant interacting young radio galaxy. In: Monthly Notices of the Royal Astronomical Society. 2019 ; Vol. 482, No. 3. pp. 2934-2949.
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abstract = "Cold neutral gas is a key ingredient for growing the stellar and central black hole mass in galaxies throughout cosmic history. We have used the Atacama Large Millimetre Array to detect a rare example of redshifted (CO)-C-12 (2-1) absorption in PKS B1740-517, a young (t similar to 1.6 x 10(3) yr) and luminous (L-5GH approximate to 6.6 x 10(43) erg s(-1)) radio galaxy at z = 0.44 that is undergoing a tidal interaction with at least one lower mass companion. The coincident H I 21-cm and molecular absorption have very similar line profiles and reveal a reservoir of cold gas (M-gas similar to 10(7) -10(8) M-circle dot), likely distributed in a disc or ring within a few kiloparsecs of the nucleus. A separate HI component is kinematically distinct and has a very narrow line width (Delta u(FWHM)",
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Allison, JR, Mahony, EK, Moss, VA, Sadler, EM, Whiting, MT, Allison, RF, Bland-Hawthorn, J, Curran, SJ, Emonts, BHC, Lagos, CDP, Morganti, R, Tremblay, G, Zwaan, M, Anderson, CS, Bunton, JD & Voronkov, MA 2019, 'PKS B1740-517: an ALMA view of the cold gas feeding a distant interacting young radio galaxy' Monthly Notices of the Royal Astronomical Society, vol. 482, no. 3, pp. 2934-2949. https://doi.org/10.1093/mnras/sty2852

PKS B1740-517 : an ALMA view of the cold gas feeding a distant interacting young radio galaxy. / Allison, J. R.; Mahony, E. K.; Moss, V. A.; Sadler, E. M.; Whiting, M. T.; Allison, R. F.; Bland-Hawthorn, J.; Curran, S. J.; Emonts, B. H. C.; Lagos, C. D. P.; Morganti, R.; Tremblay, G.; Zwaan, M.; Anderson, C. S.; Bunton, J. D.; Voronkov, M. A.

In: Monthly Notices of the Royal Astronomical Society, Vol. 482, No. 3, 01.2019, p. 2934-2949.

Research output: Contribution to journalArticle

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T2 - an ALMA view of the cold gas feeding a distant interacting young radio galaxy

AU - Allison, J. R.

AU - Mahony, E. K.

AU - Moss, V. A.

AU - Sadler, E. M.

AU - Whiting, M. T.

AU - Allison, R. F.

AU - Bland-Hawthorn, J.

AU - Curran, S. J.

AU - Emonts, B. H. C.

AU - Lagos, C. D. P.

AU - Morganti, R.

AU - Tremblay, G.

AU - Zwaan, M.

AU - Anderson, C. S.

AU - Bunton, J. D.

AU - Voronkov, M. A.

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KW - galaxies: high redshift

KW - galaxies: ISM

KW - galaxies: structure

KW - radio lines: galaxies

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KW - SUPERMASSIVE BLACK-HOLES

KW - ACTIVE GALACTIC NUCLEI

KW - COMPACT STEEP-SPECTRUM

KW - ELECTRON MASS-RATIO

KW - DIGITAL SKY SURVEY

KW - H I GAS

KW - MOLECULAR GAS

KW - STAR-FORMATION

KW - GRAVITATIONAL LENS

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JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

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