MEASUREMENT OF THE BLACK HOLE MASS IN NGC 1332 FROM ALMA OBSERVATIONS AT 0.044 ARCSECOND RESOLUTION

Aaron J Barth; Benjamin D Boizelle; Jeremy Darling; Andrew J Baker; David A Buote; Luis C Ho; Jonelle L Walsh

doi:10.3847/2041-8205/822/2/L28

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MEASUREMENT OF THE BLACK HOLE MASS IN NGC 1332 FROM ALMA OBSERVATIONS AT 0.044 ARCSECOND RESOLUTION

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MEASUREMENT OF THE BLACK HOLE MASS IN NGC 1332 FROM ALMA OBSERVATIONS AT 0.044 ARCSECOND RESOLUTION

Aaron J Barth, Benjamin D Boizelle, Jeremy Darling, Andrew J Baker, David A Buote, Luis C Ho and Jonelle L Walsh

Astrophysical journal. Letters, Vol.822(2), pp.L28-L28

05/05/2016

DOI: https://doi.org/10.3847/2041-8205/822/2/L28

Abstract

galaxies: bulges

galaxies: individual (NGC 1332)

galaxies: kinematics and dynamics

galaxies: nuclei

ABSTRACT We present Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 3 observations of CO(2-1) emission from the circumnuclear disk in the E/S0 galaxy NGC 1332 at 0 044 resolution. The disk exhibits regular rotational kinematics and central high-velocity emission ( 500 km s−1) consistent with the presence of a compact central mass. We construct models for a thin, dynamically cold disk in the gravitational potential of the host galaxy and black hole and fit the beam-smeared model line profiles directly to the ALMA data cube. Model fits successfully reproduce the disk kinematics out to r = 200 pc. Fitting models just to spatial pixels within projected r = 50 pc of the nucleus (two times larger than the black hole's gravitational radius of influence), we find M BH = ( 6.64 − 0.63 + 0.65 ) × 10 8 M . This observation demonstrates ALMA's powerful capability to determine the masses of supermassive black holes by resolving gas kinematics on small angular scales in galaxy nuclei.

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Title: MEASUREMENT OF THE BLACK HOLE MASS IN NGC 1332 FROM ALMA OBSERVATIONS AT 0.044 ARCSECOND RESOLUTION
Creators: Aaron J Barth - Department of Physics and Astronomy, University of California , 4129 Frederick Reines Hall, Irvine, CA, 92697-4575, USA
Benjamin D Boizelle - Department of Physics and Astronomy, University of California , 4129 Frederick Reines Hall, Irvine, CA, 92697-4575, USA
Jeremy Darling - Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences, University of Colorado , 389 UCB, Boulder, CO 80309-0389, USA
Andrew J Baker - Department of Physics and Astronomy, Rutgers, the State University of New Jersey , 136 Frelinghuysen Road, Piscataway, NJ 08854-8019, USA
David A Buote - Department of Physics and Astronomy, University of California , 4129 Frederick Reines Hall, Irvine, CA, 92697-4575, USA
Luis C Ho - Kavli Institute for Astronomy and Astrophysics and Department of Astronomy, School of Physics, Peking University , Beijing 100871, China
Jonelle L Walsh - George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A&M University , College Station, TX 77843-4242, USA
Publication Details: Astrophysical journal. Letters, Vol.822(2), pp.L28-L28
Date published: 05/05/2016
Publisher: The American Astronomical Society
Number of pages: 5
Academic Unit: Physics and Astronomy (SAS)
Language: English
Resource Type: Journal article
Identifiers: 991031666254504646