Assassin Picture of the Week
Our Latest Paper, in Video Form
This week's "picture" is actually a video, describing the latest paper submitted by the ASAS-SN team about an ASAS-SN discovery. The paper, titled "Discovery and Observations of ASASSN-13db, an EXor Accretion Event on a Low-Mass T Tauri Star," was lead by first-year OSU Astronomy graduate student Tom Holoien and presents our findings on ASASSN-13db, one of our discoveries from 2013.
In the video above Tom describes ASASSN-13db, an accretion event on a T Tauri star that we discovered in September 2013. Follow-up observations of the transient showed that it had a very unique spectrum dominated by emission lines, characteristic of a class of episodic accretion events called "EXors." Further investigation revealed other similarities between ASASSN-13db and EXors, leading us to conclude that ASASSN-13db was also an EXor event. However, the number of known EXors is small, and ASASSN-13db appears to be much less massive and luminous than is typical for these objects, making it a particularly interesting object for further study.
The full text of the paper can be found on ADS here.
For more OSU Astronomy Coffee Brief videos, please see the OSU Astronomy YouTube Channel.
Back to ASAS-SN page.
See previous APOWs:
Host Galaxies of ASAS-SN Supernovae
Back in Real-Time Discovery Business!
We Have a Logo!
Active (Some Less, Some More) Galactic Nuclei with ASAS-SN
Brutus is EXPANDING!
Ultraviolet and Optical Follow-Up of ASASSN-13dl, Our Latest
Dramatic AGN Outburst in NGC 2617
M81 and Friends
Two ASAS-SN Views of Orion Nebula
AAVSO Observations of Cataclysmic Variable ASASSN-13ck
Two ASAS-SN Supernovae in One Day!
It is Good to be Lucky!
Extreme M-dwarf Flare Observed by ASAS-SN;
Multiband photometric follow-up of ASASSN-13aw (SN 2013dr);
"Assassin" Unit 1: Brutus;
How ASAS-SN Discovers Supernovae: Case of Supernova ASASSN-13bb;
NGC 2617: Dramatic Seyfert Type Change;
ASASSN-13/SN 2013da: Our First Supernova Three Weeks Later;
M31 and Companions;
This homepage is maintained by Ben Shappee, Tom Holoien and Kris Stanek. Updated Thu Jan 9 15:01:05 EST 2014