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Cross-checking SMBH...
Cross-checking SMBH mass estimates in NGC 6958-I. Stellar dynamics from adaptive optics-assisted MUSE observations
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- Thater, Sabine (författare)
- Universität Wien,University of Vienna,Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam
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- Krajnovic, Davor (författare)
- Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam
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- Weilbacher, Peter M. (författare)
- Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam
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- Nguyen, Dieu D. (författare)
- Vietnam National University
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- Bureau, Martin (författare)
- Yonsei University,University Of Oxford
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- Cappellari, Michele (författare)
- University Of Oxford
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- Davis, Timothy A. (författare)
- Cardiff University
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- Iguchi, Satoru (författare)
- National Institutes of Natural Sciences (NINS)
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- McDermid, Richard (författare)
- Macquarie University
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- Onishi, Kyoko, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Sarzi, Marc (författare)
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- van de Ven, Glenn (författare)
- Universität Wien,University of Vienna
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(creator_code:org_t)
- 2021-11-10
- 2022
- Engelska.
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Ingår i: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 509:4, s. 5416-5436
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Abstract
Ämnesord
Stäng
- Supermassive black hole masses (M (BH)) can dynamically be estimated with various methods and using different kinematic tracers. Different methods have only been cross-checked for a small number of galaxies and often show discrepancies. To understand these discrepancies, detailed cross-comparisons of additional galaxies are needed. We present the first part of our cross-comparison between stellar- and gas-based M-BH estimates in the nearby fast-rotating early-type galaxy NGC 6958. The measurements presented here are based on ground-layer adaptive optics-assisted Multi-Unit Spectroscopic Explorer (MUSE) science verification data at around 0."6 spatial resolution. The spatial resolution is a key ingredient for the measurement and we provide a Gaussian parametrization of the adaptive optics-assisted point spread function for various wavelengths. From the MUSE data, we extracted the stellar kinematics and constructed dynamical models. Using an axisymmetric Schwarzschild technique, we measured an M-BH of (3.6(-2.4)(+2.7)) x10(8) M-circle dot at 3 sigma significance taking kinematical and dynamical systematics (e.g. radially varying mass-to-light ratio) into account. We also added a dark halo, but our data do not allow us to constrain the dark matter fraction. Adding dark matter with an abundance matching prior results in a 25 per cent more massive black hole. Jeans anisotropic models return M-BH of (4.6(-2.7)(+2.5)) x10(8) and (8.6(-0.8)(+0.8)) x10(8) M-circle dot at 3 sigma confidence for spherical and cylindrical alignments of the velocity ellipsoid, respectively. In a follow-up study, we will compare the stellar-based M (BH) with those from cold and warm gas tracers, which will provide additional constraints for the M-BH for NGC 6958, and insights into assumptions that lead to potential systematic uncertainty.
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 -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
Nyckelord
- galaxies: kinematics and dynamics
- galaxies: individual: NGC 6958
- galaxies: nuclei
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Thater, Sabine
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Krajnovic, Davor
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Weilbacher, Pete ...
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Nguyen, Dieu D.
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Bureau, Martin
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Cappellari, Mich ...
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visa fler...
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Davis, Timothy A ...
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Iguchi, Satoru
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McDermid, Richar ...
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Onishi, Kyoko, 1 ...
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Sarzi, Marc
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van de Ven, Glen ...
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visa färre...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Subatomär fysik
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Astronomi astrof ...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Geofysik
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