Search: (WFRF:(McDermid Richard M.)) >
Cross-checking SMBH...
Cross-checking SMBH mass estimates in NGC 6958-I. Stellar dynamics from adaptive optics-assisted MUSE observations
-
- Thater, Sabine (author)
- Universität Wien,University of Vienna,Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam
-
- Krajnovic, Davor (author)
- Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam
-
- Weilbacher, Peter M. (author)
- Leibniz-Institut Für Astrophysik Potsdam,Leibniz Institute for Astrophysics Potsdam
-
show more...
-
- Nguyen, Dieu D. (author)
- Vietnam National University
-
- Bureau, Martin (author)
- Yonsei University,University Of Oxford
-
- Cappellari, Michele (author)
- University Of Oxford
-
- Davis, Timothy A. (author)
- Cardiff University
-
- Iguchi, Satoru (author)
- National Institutes of Natural Sciences (NINS)
-
- McDermid, Richard (author)
- Macquarie University
-
- Onishi, Kyoko, 1989 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
Sarzi, Marc (author)
-
- van de Ven, Glenn (author)
- Universität Wien,University of Vienna
-
show less...
-
(creator_code:org_t)
- 2021-11-10
- 2022
- English.
-
In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 509:4, s. 5416-5436
- Related links:
-
https://research.cha... (primary) (free)
-
show more...
-
https://academic.oup...
-
https://doi.org/10.1...
-
https://research.cha...
-
show less...
Abstract
Subject headings
Close
- 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.
Subject headings
- 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)
Keyword
- galaxies: kinematics and dynamics
- galaxies: individual: NGC 6958
- galaxies: nuclei
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Thater, Sabine
-
Krajnovic, Davor
-
Weilbacher, Pete ...
-
Nguyen, Dieu D.
-
Bureau, Martin
-
Cappellari, Mich ...
-
show more...
-
Davis, Timothy A ...
-
Iguchi, Satoru
-
McDermid, Richar ...
-
Onishi, Kyoko, 1 ...
-
Sarzi, Marc
-
van de Ven, Glen ...
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Subatomic Physic ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Earth and Relate ...
-
and Geophysics
- Articles in the publication
-
Monthly Notices ...
- By the university
-
Chalmers University of Technology