A high precision mass measurement of the central black hole in the massive elliptical NGC 2513 with ALMA molecular gas dynamics

Autor(en)

S.~A. Harrisberg, S. Thater, D. Nguyen, A. Hacar, H.~N. Ngo

Abstrakt

Supermassive black holes (SMBH) are believed to co-evolve with their host galaxies. Evidence for the co-
evolution is found in the form of several tight correlations between the SMBH mass and various properties of
the host galaxy, such as bulge stellar velocity dispersion (Ferrarese & Merritt 2000). In order to better
understand the correlations more SMBH measurements are required in the low- and high-mass SMBH
regime.
In this talk, I present my results of a SMBH mass measurement in the massive elliptical galaxy NGC 2513
obtained from cold molecular gas dynamics (Davis et al. 2013), using high resolution ALMA (Atacama Large
Millimeter/sub-millimeter Array) observations.
I will first discuss the method, its advantages and its limitations.
Knowing the luminous mass of the galaxy is crucial for a precise SMBH mass measurement. I will then
present how I derived the luminous mass of NGC 2513 using near-infrared images from the Hubble Space
Telescope taking detailed dust masking into account.
In the final part of my talk, I will present kinematic maps obtained from the high-resolution observations
(0.369'' x 0.325'') of the CO(2-1) lines obtained from ALMA.
These are then modeled using the KInMS (KINematic Molecular Simulation) routines developed by Davis et
al. (2013). Applying the best-fit model to the ALMA data, the SMBH mass and its limits can finally be
constrained.

Organisation(en)

Institut für Astrophysik

Publikationsdatum

03-2024

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie, 103004 Astrophysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5b5428b6-6852-49e3-927c-88ec0b921213