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Black Holes and Revelations: Dynamic...

Kabasares, Kyle Kristian Muyalde.

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Black Holes and Revelations: Dynamical Mass Measurements of Supermassive Black Holes in Early-Type Galaxies With ALMA and HST.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Black Holes and Revelations: Dynamical Mass Measurements of Supermassive Black Holes in Early-Type Galaxies With ALMA and HST./
Author:	Kabasares, Kyle Kristian Muyalde.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
Description:	199 p.
Notes:	Source: Dissertations Abstracts International, Volume: 85-02, Section: B.
Contained By:	Dissertations Abstracts International85-02B.
Subject:	Astronomy. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30527147
ISBN:	9798380131209

Black Holes and Revelations: Dynamical Mass Measurements of Supermassive Black Holes in Early-Type Galaxies With ALMA and HST.
Kabasares, Kyle Kristian Muyalde.

Black Holes and Revelations: Dynamical Mass Measurements of Supermassive Black Holes in Early-Type Galaxies With ALMA and HST. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 199 p.

Source: Dissertations Abstracts International, Volume: 85-02, Section: B.

Thesis (Ph.D.)--University of California, Irvine, 2023.

This dissertation presents the results of a set of research projects focused on using optical and near-infrared Hubble Space Telescope and CO(2-1) Atacama Large Millimeter/submillimeter observations to measure the masses of central black holes in nearby (< 100 Mpc) early-type galaxies. By modeling the rotation of circumnuclear disks, I dynamically measured the masses of eight supermassive black holes in the following galaxies: NGC 1380, NGC 6861, NGC 4786, NGC 5193, NGC 3245, NGC 4435, NGC 5838, and ESO 208-G21.I developed a thin disk gas-dynamical modeling framework in Python in order to analyze, model, and interpret the observed ALMA CO(2-1) gas kinematics. Using near-infrared (J and H-band) Hubble Space Telescope data from Wide Field Camera 3, I constructed Multi-Gaussian Expansion models in GALFIT to model the gravitational potential of the host galaxy and developed a novel method to account for the effects of circumnuclear dust on molecular gas-dynamical black hole mass measurements using two-band color information. I performed rigorous systematic and statistical tests of my dynamical models to fully explore the error budget of each measurement. Key limiting factors on the precision of mass measurements such as dust extinction, recent star-formation, low level active galactic nuclei activity, insufficient angular resolution, and lack of dynamical information within the black hole's sphere of influence were identified.In summary, I provide the following MBH measurements and estimates for the eight early-type galaxies: NGC 1380 (MBH = [1.02 - 2.04] x 108 M⊙), NGC 6861 (MBH = [1.13 - 2.89] x 109 M⊙), NGC 4786 (MBH = [3.7 - 6.4] x 108 M⊙), NGC 5193 (MBH = [1.3 - 2.9] x 108 M⊙), NGC 3245 (MBH = [0.9 - 1.4] x 108 M⊙), NGC 4435 (MBH = [0.5 - 0.8] x 108 M⊙), NGC 5838 (MBH = [0.01 - 19.4] x 108 M⊙), and ESO 208 - G21 (MBH = 2.3 x 108 M⊙) The mass measurements of the central black holes in NGC 1380, NGC 4786, NGC 5193, NGC 5838, and ESO 208 - G21 are the first black hole mass measurements of any kind in those galaxies, while the NGC 3245, NGC 4435, and NGC 6861 mass measurements provide independent crosschecks of previous results.

ISBN: 9798380131209Subjects--Topical Terms:

517668
Astronomy.
Subjects--Index Terms:

ALMA

Black Holes and Revelations: Dynamical Mass Measurements of Supermassive Black Holes in Early-Type Galaxies With ALMA and HST.
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100 1 $a Kabasares, Kyle Kristian Muyalde. $3 3773022
245 1 0 $a Black Holes and Revelations: Dynamical Mass Measurements of Supermassive Black Holes in Early-Type Galaxies With ALMA and HST.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 199 p.
500 $a Source: Dissertations Abstracts International, Volume: 85-02, Section: B.
500 $a Advisor: Barth, Aaron J.
502 $a Thesis (Ph.D.)--University of California, Irvine, 2023.
520 $a This dissertation presents the results of a set of research projects focused on using optical and near-infrared Hubble Space Telescope and CO(2-1) Atacama Large Millimeter/submillimeter observations to measure the masses of central black holes in nearby (< 100 Mpc) early-type galaxies. By modeling the rotation of circumnuclear disks, I dynamically measured the masses of eight supermassive black holes in the following galaxies: NGC 1380, NGC 6861, NGC 4786, NGC 5193, NGC 3245, NGC 4435, NGC 5838, and ESO 208-G21.I developed a thin disk gas-dynamical modeling framework in Python in order to analyze, model, and interpret the observed ALMA CO(2-1) gas kinematics. Using near-infrared (J and H-band) Hubble Space Telescope data from Wide Field Camera 3, I constructed Multi-Gaussian Expansion models in GALFIT to model the gravitational potential of the host galaxy and developed a novel method to account for the effects of circumnuclear dust on molecular gas-dynamical black hole mass measurements using two-band color information. I performed rigorous systematic and statistical tests of my dynamical models to fully explore the error budget of each measurement. Key limiting factors on the precision of mass measurements such as dust extinction, recent star-formation, low level active galactic nuclei activity, insufficient angular resolution, and lack of dynamical information within the black hole's sphere of influence were identified.In summary, I provide the following MBH measurements and estimates for the eight early-type galaxies: NGC 1380 (MBH = [1.02 - 2.04] x 108 M⊙), NGC 6861 (MBH = [1.13 - 2.89] x 109 M⊙), NGC 4786 (MBH = [3.7 - 6.4] x 108 M⊙), NGC 5193 (MBH = [1.3 - 2.9] x 108 M⊙), NGC 3245 (MBH = [0.9 - 1.4] x 108 M⊙), NGC 4435 (MBH = [0.5 - 0.8] x 108 M⊙), NGC 5838 (MBH = [0.01 - 19.4] x 108 M⊙), and ESO 208 - G21 (MBH = 2.3 x 108 M⊙) The mass measurements of the central black holes in NGC 1380, NGC 4786, NGC 5193, NGC 5838, and ESO 208 - G21 are the first black hole mass measurements of any kind in those galaxies, while the NGC 3245, NGC 4435, and NGC 6861 mass measurements provide independent crosschecks of previous results.
590 $a School code: 0030.
650 4 $a Astronomy. $3 517668
650 4 $a Astrophysics. $3 535904
650 4 $a Physics. $3 516296
653 $a ALMA
653 $a Black holes
653 $a Early-type galaxies
653 $a HST
653 $a Python
653 $a Radio astronomy
690 $a 0606
690 $a 0596
690 $a 0605
710 2 $a University of California, Irvine. $b Physics. $3 3193115
773 0 $t Dissertations Abstracts International $g 85-02B.
790 $a 0030
791 $a Ph.D.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30527147