1.7k citations · 15.8k across the 157 of their papers we have counts for
156 papers
Beyond spectroscopy. II. Stellar parameters for over twenty million stars in the northern sky from SAGES DR1 and Gaia DR3
Yang Huang, Timothy C. Beers, Hai-Bo Yuan +18
We present precise photometric estimates of stellar parameters, including effective temperature, metallicity, luminosity classification, distance, and stellar age, for nearly 26 mi…
Probing Quasar Viewing Angle with the Variability Structure Function
Ji-Jia Tang, Christian Wolf, John Tonry +3
Given the anisotropic emission from quasar accretion discs, their viewing angle affects estimates of the quasar luminosity, black-hole mass and Eddington ratio. Discs appear overlu…
A redshifted excess in the broad emission lines after the flare of the -ray narrow-line Seyfert 1 PKS 2004-447
W. Hon, M. Berton, E. Sani +6
PKS 2004-447 is a narrow-line Seyfert 1 (NLS1) harbouring a relativistic jet with gamma-ray emission. On 2019-10-25, the Fermi-Large Area Telescope captured a -ray flare from th…
Characterising SMSS J2157--3602, the most luminous known quasar, with accretion disc models
Samuel Lai, Christian Wolf, Christopher Onken +1
We develop an accretion disc (AD) fitting method, utilising thin and slim disc models and Bayesian inference with the Markov-Chain Monte-Carlo approach, testing it on the most lumi…
Spatially Dependent Photometric Activity of M dwarfs in the Solar Cylinder
Seo-Won Chang, Christian Wolf, Christopher A. Onken
We study the relationship between Galactic location () and photometric activity for 3.6 million M dwarf stars within 1 kpc of the Sun. For this purpose, we identify 906 uniqu…
AllBRICQS: the All-sky BRIght, Complete Quasar Survey
Christopher A. Onken, Christian Wolf, Wei Jeat Hon +3
We describe the first results from the All-sky BRIght, Complete Quasar Survey (AllBRICQS), which aims to discover the last remaining optically bright quasars. We present 156 spectr…