Search Results - "Ho, Luis C."

The diversity of quasars unified by accretion and orientation by Shen, Yue, Ho, Luis C.

“…Analysis of archival quasar data reveals that two quantities — the Eddington ratio and orientation — explain most of the diverse characteristics of quasars…”
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Intermediate-Mass Black Holes by Greene, Jenny E, Strader, Jay, Ho, Luis C

“…We describe ongoing searches for intermediate-mass black holes with M BH ≈ 10-10 5 M . We review a range of search mechanisms, both dynamical and those that…”
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Nuclear Activity in Nearby Galaxies by Ho, Luis C

“…A significant fraction of nearby galaxies show evidence of weak nuclear activity unrelated to normal stellar processes. Recent high-resolution, multiwavelength…”
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Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies by Kormendy, John, Ho, Luis C

“…Supermassive black holes (BHs) have been found in 85 galaxies by dynamical modeling of spatially resolved kinematics. The Hubble Space Telescope revolutionized…”
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THE BLACK HOLE MASS SCALE OF CLASSICAL AND PSEUDO BULGES IN ACTIVE GALAXIES by Ho, Luis C, KIM, MINJIN

“…The mass estimator used to calculate black hole (BH) masses in broad-line active galactic nuclei (AGNs) relies on a virial coefficient (the "f factor") that is…”
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On the Gas Content and Efficiency of AGN Feedback in Low-redshift Quasars by Shangguan, Jinyi, Ho, Luis C., Xie, Yanxia

“…The interstellar medium is crucial to understanding the physics of active galaxies and the coevolution between supermassive black holes and their host…”
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A New Calibration of Star Formation Rate in Galaxies Based on Polycyclic Aromatic Hydrocarbon Emission by Xie, Yanxia, Ho, Luis C.

“…Polycyclic aromatic hydrocarbon (PAH) emission has long been proposed to be a potential star formation rate indicator, as it arises from the photodissociation…”
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The Interaction between AGN and Starburst Activity in the Circumnuclear Region of NGC 7469 as Viewed with JWST by Zhang, Lulu, Ho, Luis C.

“…Abstract We combine mid-infrared diagnostics obtained from integral-field-unit observations taken with Mid-Infrared Instrument/Medium Resolution Spectrograph…”
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Gas Content Regulates the Life Cycle of Star Formation and Black Hole Accretion in Galaxies by Yesuf, Hassen M., Ho, Luis C.

“…Abstract Feedback from active galactic nuclei (AGNs) is expected to impact the amount of cold gas in galaxies by driving strong galactic winds, by preventing…”
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The Black Hole Masses and Eddington Ratios of Type 2 Quasars by Kong, Minzhi, Ho, Luis C.

“…Type 2 quasars are an important constituent of active galaxies, possibly representing the evolutionary precursors of traditionally studied type 1 quasars. We…”
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Chandra Survey of Nearby Galaxies: The Catalog by She, Rui, Ho, Luis C., Feng, Hua

“…We searched the public archive of the Chandra X-ray Observatory as of 2016 March and assembled a sample of 719 galaxies within 50 Mpc with available Advanced…”
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Dirt-cheap Gas Scaling Relations: Using Dust Absorption, Metallicity, and Galaxy Size to Predict Gas Masses for Large Samples of Galaxies by Yesuf, Hassen M., Ho, Luis C.

“…We apply novel survival analysis techniques to investigate the relationship between a number of the properties of galaxies and their atomic (MH i) and…”
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AGN Feedback and Star Formation of Quasar Host Galaxies: Insights from the Molecular Gas by Shangguan, Jinyi, Ho, Luis C., Bauer, Franz E., Wang, Ran, Treister, Ezequiel

“…Molecular gas serves as a key probe of the complex interplay between black hole accretion and star formation in the host galaxies of active galactic nuclei…”
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The Contribution of Evolved Stars to Polycyclic Aromatic Hydrocarbon Heating and Implications for Estimating Star Formation Rates by Zhang, Lulu, Ho, Luis C.

“…Abstract Emission from polycyclic aromatic hydrocarbons (PAHs) is a promising tool for estimating star formation rate (SFR) in galaxies, but the origin of its…”
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The Interplay between Star Formation and Black Hole Accretion in Nearby Active Galaxies by Zhuang, Ming-Yang, Ho, Luis C.

“…Black hole accretion is widely thought to influence star formation in galaxies, but the empirical evidence for a physical correlation between star formation…”
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Evolution of broad-line emission from active galactic nuclei by Elitzur, Moshe, Ho, Luis C., Trump, Jonathan R.

“…Apart from viewing-dependent obscuration, intrinsic broad-line emission from active galactic nuclei (AGN) follows an evolutionary sequence: type 1 → 1.2/1.5 →…”
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Chandra Survey of Nearby Galaxies: A Significant Population of Candidate Central Black Holes in Late-type Galaxies by She, Rui, Ho, Luis C., Feng, Hua

“…Based on the Chandra data archive as of 2016 March, we have identified 314 candidate active galactic nuclei in 719 galaxies located closer than 50 Mpc, among…”
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Estimating Molecular Gas Content in Galaxies from Polycyclic Aromatic Hydrocarbon Emission by Zhang, Lulu, Ho, Luis C.

“…Abstract Emission from polycyclic aromatic hydrocarbons (PAHs), a commonly used indicator of star formation activity in galaxies, also has the potential to…”
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The Infrared Emission and Opening Angle of the Torus in Quasars by Zhuang, Ming-Yang, Ho, Luis C., Shangguan, Jinyi

“…According to the unified model of active galactic nuclei (AGNs), a putative dusty torus plays an important role in determining an AGN's external appearance…”
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The close environments of accreting massive black holes are shaped by radiative feedback by Ricci, Claudio, Trakhtenbrot, Benny, Koss, Michael J., Ueda, Yoshihiro, Schawinski, Kevin, Oh, Kyuseok, Lamperti, Isabella, Mushotzky, Richard, Treister, Ezequiel, Ho, Luis C., Weigel, Anna, Bauer, Franz E., Paltani, Stephane, Fabian, Andrew C., Xie, Yanxia, Gehrels, Neil

“…Radiation pressure on dusty gas is the main physical mechanism that regulates the distribution of the circumnuclear material that obscures many supermassive…”
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