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.