1 citations · 1 across the 5 of their papers we have counts for
5 papers
Detection of Variability in Seyfert 2 Galaxies and Measurement of the Optical Scattering Region Size
Natalie Kovacevic, Xinyu Dai, Heechan Yuk +5
One main theme of the Unification Model of active galactic nuclei is that there is an obscuring torus structure blocking the direct view of the central engine for Seyfert 2 galaxie…
The shortest detected intra-day variability of active galactic nuclei in TESS survey
Heechan Yuk, Xinyu Dai, Natalie Kovacevic
AGNs are known to be variable in almost all wavelengths and timescales. The shortest variability timescale of AGNs can be used to probe the smallest scale structures within AGNs. W…
A Decade-Long Increasing Mid-Infrared Luminosity in Galaxy NGC6447: a Turning-On Candidate of Active Galactic Nucleus
Xinyu Dai, Nate Adams, Natalie Kovacevic +6
It is widely expected that the obscured accretion stage can be the initial turning-on stage of active galactic nuclei from quiescent galaxies. We present mid-infrared light curves…
Comparing Optical Variability of Type 1 and Type 2 AGN from the BAT 9-Month Sample using ASAS-SN and TESS Surveys
Natalie Kovacevic, Xinyu Dai, Heechan Yuk +6
We present an optical variability analysis and comparison of the samples of Seyfert 1 and 2 galaxies, selected from the \textit{Swift} 9-month BAT catalog, using the light curves f…
Discovery of a Nearby Young Brown Dwarf Disk
M. C. Schutte, K. D. Lawson, J. P. Wisniewski +15
We report the discovery of the youngest brown dwarf with a disk at 102 pc from the Sun, WISEA~J120037.79-784508.3 (W1200-7845), via the Disk Detective citizen science project. We e…