Hintze Centre for Astrophysical Surveys

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The fast, luminous ultraviolet transient AT2018cow: extreme supernova, or disruption of a star by an intermediate-mass black hole?

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 484:1 (2019) 1031-1049

Authors:

Daniel A Perley, Paolo A Mazzali, Lin Yan, S Bradley Cenko, Suvi Gezari, Kirsty Taggart, Nadia Blagorodnova, Christoffer Fremling, Brenna Mockler, Avinash Singh, Nozomu Tominaga, Masaomi Tanaka, Alan M Watson, Tomás Ahumada, GC Anupama, Chris Ashall, Rosa L Becerra, David Bersier, Varun Bhalerao, Joshua S Bloom, Nathaniel R Butler, Chris Copperwheat, Michael W Coughlin, Kishalay De, Andrew J Drake, Dmitry A Duev, Sara Frederick, J Jesús González, Ariel Goobar, Marianne Heida, Anna YQ Ho, John Horst, Tiara Hung, Ryosuke Itoh, Jacob E Jencson, Mansi M Kasliwal, Nobuyuki Kawai, Tanazza Khanam, Shrinivas R Kulkarni, Brajesh Kumar, Harsh Kumar, Alexander S Kutyrev, William H Lee, Keiichi Maeda, Ashish Mahabal, Katsuhiro L Murata, James D Neill, Chow-Choong Ngeow, Bryan Penprase, Elena Pian, Robert Quimby, Enrico Ramirez-Ruiz, Michael G Richer, Carlos G Román-Zúñiga, DK Sahu, Shubham Srivastav, Quentin Socia, Jesper Sollerman, Yutaro Tachibana, Francesco Taddia, Samaporn Tinyanont, Eleonora Troja, Charlotte Ward, Jerrick Wee, Po-Chieh Yu
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The case for a 'sub-millimeter SDSS': a 3D map of galaxy evolution to z~10

(2019)

Authors:

James E Geach, Manda Banerji, Frank Bertoldi, Matthieu Bethermin, Caitlin M Casey, Chian-Chou Chen, David L Clements, Claudia Cicone, Francoise Combes, Christopher Conselice, Asantha Cooray, Kristen Coppin, Emanuele Daddi, Helmut Dannerbauer, Romeel Dave, Matthew Doherty, James S Dunlop, Alastair Edge, Duncan Farrah, Maximilien Franco, Gary Fuller, Tracy Garratt, Walter Gear, Thomas R Greve, Evanthia Hatziminaoglou, Christopher C Hayward, Rob J Ivison, Ryohei Kawabe, Pamela Klaassen, Kirsten K Knudsen, Kotaro Kohno, Maciej Koprowski, Claudia DP Lagos, Georgios E Magdis, Benjamin Magnelli, Sean L McGee, Michal Michalowski, Tony Mroczkowski, Omid Noroozian, Seb Oliver, Dominik Riechers, Wiphu Rujopakarn, Douglas Scott, Stephen Serjeant, Matthew WL Smith, Mark Swinbank, Yoichi Tamura, Paul van der Werf, Eelco van Kampen, Aprajita Verma, Joaquin Vieira, Jeff Wagg, Fabian Walter, Lingyu Wang, Al Wootten, Min S Yun
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The spectral evolution of AT 2018dyb and the presence of metal lines in tidal disruption events

(2019)

Authors:

Giorgos Leloudas, Lixin Dai, Iair Arcavi, Paul M Vreeswijk, Brenna Mockler, Rupak Roy, Daniele B Malesani, Steve Schulze, Thomas Wevers, Morgan Fraser, Enrico Ramirez-Ruiz, Katie Auchettl, Jamison Burke, Giacomo Cannizzaro, Panos Charalampopoulos, Ting-Wan Chen, Aleksandar Cikota, Massimo Della Valle, Lluis Galbany, Mariusz Gromadzki, Kasper E Heintz, Daichi Hiramatsu, Peter G Jonker, Zuzanna Kostrzewa-Rutkowska, Kate Maguire, Ilya Mandel, Francesca Onori, Matt Nicholl, Nathaniel Roth, Stephen J Smartt, Lukasz Wyrzykowski, Dave R Young
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WISDOM project - IV. A molecular gas dynamical measurement of the supermassive black hole mass in NGC 524

(2019)

Authors:

Mark D Smith, Martin Bureau, Timothy A Davis, Michele Cappellari, Lijie Liu, Eve V North, Kyoko Onishi, Satoru Iguchi, Marc Sarzi
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WISDOM project – IV. A molecular gas dynamical measurement of the supermassive black hole mass in NGC 524

Monthly Notices of the Royal Astronomical Society Oxford University Press 485:3 (2019) 4359-4374

Authors:

Mark D Smith, Martin Bureau, TA Davis, Michele Cappellari, Lijie Liu, EV North, K Onishi, S Iguchi, M Sarzi

Abstract:

We present high angular resolution (0.3 arcsec or 37 pc) Atacama Large Millimeter/submillimeter Array observations of the CO(2–1) line emission from a central disc in the early-type galaxy NGC 524. This disc is shown to be dynamically relaxed, exhibiting ordered rotation about a compact 1.3 mm continuum source, which we identify as emission from an active supermassive black hole (SMBH). There is a hole at the centre of the disc slightly larger than the SMBH sphere of influence. An azimuthal distortion of the observed velocity field is found to be due to either a position angle warp or radial gas flow over the inner 2. 5. By forward-modelling the observations, we obtain an estimate of the SMBH mass of 4.0+3.5 −2.0 × 108 M, where the uncertainties are at the 3σ level. The uncertainties are dominated by the poorly constrained inclination and the stellar mass-to-light ratio of this galaxy, and our measurement is consistent with the established correlation between SMBH mass and stellar velocity dispersion. Our result is roughly half that of the previous stellar dynamical measurement, but is consistent within the uncertainties of both. We also present and apply a new tool for modelling complex molecular gas distributions.
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