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What do astronomers want from the STFC?

Astronomy and Geophysics Oxford University Press 60:2 (2019) 2.13-2.17

Authors:

Stephen Serjeant, James Bolton, Poshak Gandhi, Christiane Helling, Paolo Mazzali, Ben Stappers, Yvonne Unruh, Aprajita Verma

Abstract:

Stephen Serjeant and the STFC's Astronomy Advisory Panel summarize community responses to its consultation on research priorities, undertaken in November 2018.
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Detecting Earth-like Biosignatures on Rocky Exoplanets around Nearby Stars with Ground-based Extremely Large Telescopes

(2019)

Authors:

Mercedes López-Morales, Thayne Currie, Johanna Teske, Eric Gaidos, Eliza Kempton, Jared Males, Nikole Lewis, Benjamin V Rackham, Sagi Ben-Ami, Jayne Birkby, David Charbonneau, Laird Close, Jeff Crane, Courtney Dressing, Cynthia Froning, Yasuhiro Hasegawa, Quinn Konopacky, Ravi K Kopparapu, Dimitri Mawet, Bertrand Mennesson, Ramses Ramirez, Deno Stelter, Andrew Szentgyorgyi, Ji Wang
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Single-object Imaging and Spectroscopy to Enhance Dark Energy Science from LSST

ArXiv 1903.09324 (2019)

Authors:

Renée A Hložek, Thomas Collett, Lluís Galbany, Daniel A Goldstein, Saurabh W Jha, Alex G Kim, Rachel Mandelbaum, Jeffrey A Newman, Saul Perlmutter, Daniel J Perrefort, Mark Sullivan, Aprajita Verma
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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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