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Direct T metallicity calibration of R23 in strong line emitters
Tianxing Jiang, Sangeeta Malhotra, James E. Rhoads +1
The gas metallicity of galaxies is often estimated using strong emission lines such as the optical lines of [OIII] and [OII]. The most common measure is "R23", defined as ([OII]…
Correlation between SFR surface density and thermal pressure of ionized gas in local analogs of high-redshift galaxies
Tianxing Jiang, Sangeeta Malhotra, Huan Yang +1
We explore the relation between the star formation rate surface density (SFR) and the interstellar gas pressure for nearby compact starburst galaxies. The sample consists of 17…
Discovery of An Active Intermediate-Mass Black Hole Candidate in the Barred Bulgeless Galaxy NGC 3319
Ning Jiang, Tinggui Wang, Hongyan Zhou +7
We report the discovery of an active intermediate-mass black hole (IMBH) candidate in the center of nearby barred bulgeless galaxy . The point X-ray source revealed b…
Emission Line Metallicities From The Faint Infrared Grism Survey and VLT/MUSE
John Pharo, Sangeeta Malhotra, James Rhoads +20
We derive direct measurement gas-phase metallicities of for 14 low-mass Emission Line Galaxies (ELGs) at identified in the Faint Infrar…
Gravitational floating orbits around hairy black holes
Jun Zhang, Huan Yang
We show that gravitational floating orbits may exist for black holes with rotating hairs. These black hole hairs could originate from the superradiant growth of a light axion field…
The Dawn Light of Blueberry Galaxies: Spectroscopic and Photometric Studies of two Starburst Dwarf Galaxies
Yu Rong, Huan Yang, Hong-xin Zhang +8
A population of so-called "blueberry" starbursting dwarf galaxies with extremely blue colors, low-metallicities, and enormous ionization ratios, has recently been found by Yang et…