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THOR 42: A touchstone 24 Myr-old eclipsing binary spanning the fully-convective boundary
Simon J. Murphy, Warrick A. Lawson, Christopher A. Onken +7
We present the characterization of CRTS J055255.7004426 (=THOR 42), a young eclipsing binary comprising two pre-main sequence M dwarfs (combined spectral type M3.5). This nearby…
Photometric Flaring Fraction of M dwarf Stars from the SkyMapper Southern Survey
Seo-Won Chang, Christian Wolf, Christopher A. Onken
We present our search for flares from M dwarf stars in the SkyMapper Southern Survey DR1, which covers nearly the full Southern hemisphere with six-filter sequences that are repeat…
Ultra-luminous quasars at redshift from SkyMapper
Christian Wolf, Wei Jeat Hon, Fuyan Bian +6
The most luminous quasars at high redshift harbour the fastest-growing and most massive black holes in the early Universe. They are exceedingly rare and hard to find. Here, we pres…
A Cepheid-Based Distance to the Seyfert Galaxy NGC 6814
Misty C. Bentz, Laura Ferrarese, Christopher A. Onken +2
We present a Cepheid-based distance to the nearby Seyfert galaxy NGC\,6814 from {\it Hubble Space Telescope} observations. We obtained F555W and F814W imaging over the course of 12…
Five new real-time detections of Fast Radio Bursts with UTMOST
W. Farah, C. Flynn, M. Bailes +25
We detail a new fast radio burst (FRB) survey with the Molonglo Radio Telescope, in which six FRBs were detected between June 2017 and December 2018. By using a real-time FRB detec…
SkyMapper SEDs of nearby galaxies: quenching and bursting probed by a change index for star formation
Christian Wolf, Jacob Golding, Christopher A. Onken +1
The wish list of astronomers includes a tool that reveals quenching of star formation in galaxies directly as it proceeds. Here, we present a proof-of-concept for a new quenching-a…