An askap survey for hi absorption towards dust-obscured quasars

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dc.contributor.authorGlowacki, Marcin
dc.date.accessioned2023-01-12T07:27:58Z
dc.date.available2023-01-12T07:27:58Z
dc.date.issued2019
dc.description.abstractObscuration of quasars by accreted gas and dust, or dusty intervening galaxies, can cause active galactic nuclei (AGN) to be missed in optically selected surveys. Radio observations can overcome this dust bias. In particular, radio surveys searching for H I absorption inform us on how the AGN can impact on the cold neutral gas medium within the host galaxy, or the population of intervening galaxies through the observed line of sight gas kinematics. We present the results of an H I absorption line survey at 0.4 < z < 1 towards 34 obscured quasars with the Australian SKA Pathfinder (ASKAP) commissioning array. We detect three H I absorption lines, with one of these systems previously unknown. Through optical follow-up for two sources, we find that in all detections the H I gas is associated with the AGN, and hence that these AGN are obscured by material within their host galaxies.en_US
dc.identifier.citationM Glowacki, J R Allison, V A Moss, E K Mahony, E M Sadler, J R Callingham, S L Ellison, M T Whiting, J D Bunton, A P Chippendale, I Heywood, D McConnell, W Raja, M A Voronkov, An ASKAP survey for H I absorption towards dust-obscured quasars, Monthly Notices of the Royal Astronomical Society, Volume 489, Issue 4, November 2019, Pages 4926–4943, https://doi.org/10.1093/mnras/stz2452en_US
dc.identifier.issn2331-8422
dc.identifier.urihttp://hdl.handle.net/10566/8287
dc.language.isoen_USen_US
dc.publisherOxford Academicen_US
dc.subjectgalaxies: activeen_US
dc.subjectgalaxies: ISMen_US
dc.subjectgalaxies: nucleien_US
dc.subjectradio lines: galaxiesen_US
dc.titleAn askap survey for hi absorption towards dust-obscured quasarsen_US
dc.typeArticleen_US

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