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Prospects of resolving and localising individual supermassive black hole binaries with pulsar timing arrays: the host ranking challenge
Niccolò Veronesi, Maria Charisi, Polina Petrov +5
Pulsar Timing Arrays (PTAs) are soon expected to detect individually resolved supermassive black hole (SMBH) binaries, opening the possibility for multi-messenger discoveries. The…
Mapping the Stellar Kinematics in the Central 240 Parsecs of M87 with the James Webb Space Telescope
Refa M. Al-Amri, Jonelle L. Walsh, Emily R. Liepold +2
The supermassive black hole (SMBH) in the giant elliptical galaxy M87 is one of the most well-studied in the local universe, but the stellar- and gas-dynamical SMBH mass measuremen…
The MASSIVE Survey. XX. A Triaxial Stellar Dynamical Measurement of the Supermassive Black Hole Mass and Intrinsic Galaxy Shape of Giant Radio Galaxy NGC 315
Jacob Pilawa, Emily R. Liepold, Chung-Pei Ma +2
We present a new dynamical measurement of the supermassive black hole mass and intrinsic shape of the stellar halo of the massive radio galaxy NGC 315 as part of the MASSIVE survey…
A 22-Billion Solar Mass Black Hole in Holmberg 15A with Keck KCWI Spectroscopy and Triaxial Orbit Modeling
Emily R. Liepold, Chung-Pei Ma, Jonelle L. Walsh
Holmberg 15A (H15A), the brightest cluster galaxy of Abell 85, has an exceptionally low central surface brightness even among local massive elliptical galaxies with distinct stella…
Big Galaxies and Big Black Holes: The Massive Ends of the Local Stellar and Black Hole Mass Functions and the Implications for Nanohertz Gravitational Waves
Emily R. Liepold, Chung-Pei Ma
We construct the galaxy stellar mass function (GSMF) by combining the GSMF at stellar masses from the census study of Leja et al. (2020) and…
Identifying Host Galaxies of Supermassive Black Hole Binaries Found by PTAs
Polina Petrov, Stephen R. Taylor, Maria Charisi +1
Supermassive black hole binaries (SMBHBs) present us with exciting opportunities for multi-messenger science. These systems are thought to form naturally in galaxy mergers and ther…
TriOS Schwarzschild Orbit Modeling: Robustness of Parameter Inference for Masses and Shapes of Triaxial Galaxies with Supermassive Black Holes
Jacob Pilawa, Emily R. Liepold, Chung-Pei Ma
Evidence for the majority of the supermassive black holes in the local universe has been obtained dynamically from stellar motions with the Schwarzschild orbit superposition method…
The MASSIVE survey -- XIX. Molecular gas measurements of the supermassive black hole masses in the elliptical galaxies NGC 1684 and NGC 0997
Pandora Dominiak, Martin Bureau, Timothy A. Davis +3
Supermassive black hole (SMBH) masses can be measured by observing their dynamical effects on tracers, such as molecular gas. We present high angular resolution Atacama Large Milli…
Keck Integral-Field Spectroscopy of M87 Reveals an Intrinsically Triaxial Galaxy and a Revised Black Hole Mass
Emily R. Liepold, Chung-Pei Ma, Jonelle L. Walsh
The three-dimensional intrinsic shape of a galaxy and the mass of the central supermassive black hole provide key insight into the galaxy's growth history over cosmic time. Standar…
The MASSIVE Survey. XVIII. Deep Wide-Field -band Photometry and Local Scaling Relations for Massive Early-Type Galaxies
Matthew E. Quenneville, John P. Blakeslee, Chung-Pei Ma +4
We present wide-field, deep -band photometry of 98 luminous early-type galaxies (ETGs) from the MASSIVE survey based on observations taken with the WIRCam instrument on the Cana…
Gas inflows in the polar ring of NGC 4111: the birth of an AGN
Gabriel R. Hauschild-Roier, Thaisa Storchi-Bergmann, Richard M. McDermid +14
We have used Hubble Space Telescope (HST) images, SAURON Integral Field Spectroscopy (IFS) and adaptative optics assisted Gemini NIFS near-infrared K-band IFS to map the stellar an…