Kavli Affiliate: Luis Ho | First 5 Authors: Kayhan Gültekin, Aaron Barth, Karl Gebhardt, Jenny Greene, Luis Ho | Summary: Supermassive black holes are located at the center of most, if not all, massive galaxies. They follow close correlations with global properties of their host galaxies (scaling relations), and are thought to play a crucial […]
Kavli Affiliate: Luis Ho | First 5 Authors: Carine Brum, Marlon R. Diniz, Rogemar A. Riffel, Alberto Rodriguez-Ardila, Luis Ho | Summary: Intermediate mass black holes (10$^3$-10$^5$ M$_odot$) in the center of dwarf galaxies are believed to be analogous to growing Active Galactic Nuclei (AGN) in the early Universe. Their characterization can provide insight about […]
Kavli Affiliate: Luis Ho | First 5 Authors: Yue Shen, Scott Anderson, Edo Berger, W. N. Brandt, Gisella De Rosa | Summary: The ubiquitous variability of quasars across a wide range of wavelengths and timescales encodes critical information about the structure and dynamics of the circumnuclear emitting regions that are too small to be directly […]
Kavli Affiliate: Jinyi Shangguan | First 5 Authors: Jinyi Shangguan, Luis C. Ho, , , | Summary: In a popular scenario for the coevolution of massive black holes and galaxies, major mergers of gas-rich galaxies fuel vigorous star formation and obscured (type 2) quasar activity until energy feedback from the active galactic nucleus clears away […]
Kavli Affiliate: Eric Peng | First 5 Authors: Eric Emsellem, Remco F. J. van der Burg, Jeremy Fensch, Tereza Jerabkova, Anita Zanella | Summary: The so-called ultra-diffuse galaxy NGC~1052-DF2 was announced to be a galaxy lacking dark matter based on a spectroscopic study of its constituent globular clusters. Here we present the first spectroscopic analysis […]
Kavli Affiliate: Lile Wang | First 5 Authors: Lile Wang, Xue-Ning Bai, Jeremy Goodman, , | Summary: Magnetized winds may be important in dispersing protoplanetary disks and influencing planet formation. We carry out global full magnetohydrodynamic simulations in axisymmetry, coupled with ray-tracing radiative transfer, consistent thermochemistry, and non-ideal MHD diffusivities. Magnetized models lacking EUV photons […]
Kavli Affiliate: Jinyi Shangguan | First 5 Authors: Jinyi Shangguan, Luis C. Ho, Yanxia Xie, , | Summary: The interstellar medium is crucial to understanding the physics of active galaxies and the coevolution between supermassive black holes and their host galaxies. However, direct gas measurements are limited by sensitivity and other uncertainties. Dust provides an […]
Kavli Affiliate: Ruobing Dong | First 5 Authors: Ruobing Dong, Rebekah Dawson, , , | Summary: Transitional disks, protoplanetary disks with deep and wide central gaps, may be the result of planetary sculpting. By comparing numerical planet-opening-gap models with observed gaps, we find systems of 3-6 giant planets are needed in order to open gaps […]
Fangzhou Jiang, Frank C. van den Bosch, , , | Summary: [[{“value”:”We use a semi-analytical model for the substructure of dark matter haloes to assess the too-big-to-fail (TBTF) problem. The model accurately reproduces the average subhalo mass and velocity functions, as well as their halo-to-halo variance, in N-body simulations. We construct thousands of realizations of […]
Kavli Affiliate: Ruobing Dong | First 5 Authors: Ruobing Dong, , , , | Summary: We explore whether protoplanetary disks with self-shadowing from puffed up inner rims exhibit observable features in scattered light images. We use both self-consistent hydrostatic equilibrium calculations and parameterized models to produce the vertically puffed up inner rims. We find that, […]