Sökning: onr:"swepub:oai:research.chalmers.se:a392fd5f-56c1-483a-b3ed-c01fa7481535" >
WISDOM project – V....
WISDOM project – V. Resolving molecular gas in Keplerian rotation around the supermassive black hole in NGC 0383
-
- North, Eve V. (författare)
- Cardiff University
-
- Davis, Timothy A. (författare)
- Cardiff University
-
- Bureau, M. (författare)
- Yonsei University,University Of Oxford
-
visa fler...
-
- Cappellari, Michele (författare)
- University Of Oxford
-
- Iguchi, Satoru (författare)
- The Graduate University for Advanced Studies (SOKENDAI),National Astronomical Observatory of Japan
-
- Liu, Lijie (författare)
- University Of Oxford
-
- Onishi, Kyoko, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology,Ehime University
-
Sarzi, Marc (författare)
-
- Smith, Mark D. (författare)
- University Of Oxford
-
- Williams, Thomas G. (författare)
- Cardiff University
-
visa färre...
-
(creator_code:org_t)
- 2019-09-17
- 2019
- Engelska.
-
Ingår i: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 490:1, s. 319-330
- Relaterad länk:
-
https://research.cha... (primary) (free)
-
visa fler...
-
https://academic.oup...
-
https://research.cha...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- As part of the mm-Wave Interferometric Survey of Dark Object Masses (WISDOM), we present a measurement of the mass of the supermassive black hole (SMBH) in the nearby early-type galaxy NGC 0383 (radio source 3C 031). This measurement is based on Atacama Large Millimeter/sub-millimeter Array (ALMA) cycle 4 and 5 observations of the 12CO(2–1) emission line with a spatial resolution of 58 × 32 pc2 (0.18 arcsec × 0.1 arcsec). This resolution, combined with a channel width of 10 km s−1, allows us to well resolve the radius of the black hole sphere of influence (measured as RSOI = 316 pc = 0.98 arcsec), where we detect a clear Keplerian increase of the rotation velocities. NGC 0383 has a kinematically relaxed, smooth nuclear molecular gas disc with weak ring/spiral features. We forward model the ALMA data cube with the KINEMATIC MOLECULAR SIMULATION (KinMS) tool and a Bayesian Markov Chain Monte Carlo method to measure an SMBH mass of (4.2 ± 0.7) × 109 M, a F160W-band stellar mass-to-light ratio that varies from 2.8 ± 0.6 M/LF160W in the centre to 2.4 ± 0.3 M/LF160W at the outer edge of the disc and a molecular gas velocity dispersion of 8.3 ± 2.1 km s−1(all 3σ uncertainties). We also detect unresolved continuum emission across the full bandwidth, consistent with synchrotron emission from an active galactic nucleus. This work demonstrates that low-J CO emission can resolve gas very close to the SMBH (≈ 140 000 Schwarzschild radii) and hence that the molecular gas method is highly complimentary to megamaser observations, as it can probe the same emitting material.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Nyckelord
- Galaxies: kinematics and dynamics
- Galaxies: elliptical and lenticular
- Galaxies: ISM
- Galaxies: individual: NGC 0383
- Galaxies: nuclei
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
-
North, Eve V.
-
Davis, Timothy A ...
-
Bureau, M.
-
Cappellari, Mich ...
-
Iguchi, Satoru
-
Liu, Lijie
-
visa fler...
-
Onishi, Kyoko, 1 ...
-
Sarzi, Marc
-
Smith, Mark D.
-
Williams, Thomas ...
-
visa färre...
- Om ämnet
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Subatomär fysik
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Astronomi astrof ...
-
- NATURVETENSKAP
-
NATURVETENSKAP
-
och Fysik
-
och Atom och molekyl ...
- Artiklar i publikationen
-
Monthly Notices ...
- Av lärosätet
-
Chalmers tekniska högskola