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OCA General Meeting
Friday June 10th, 2016, 7:30 PM
Chapman University
Free and open to public more

The All-Sky Automated Survey for Supernovae (ASAS-SN or "Assassin")

For the first time, the entire visible sky is being surveyed for the violent, variable, and transient events that shape our universe. To accomplish this, my collaborators and I built the All-Sky Automated Survey for Supernovae (ASAS-SN or "Assassin"), which is a long-term project to monitor the whole sky, at high cadence, using a global network of robotic telescopes. The primary goal of ASAS-SN is to find the closest and brightest supernovae (SNe) with an unbiased search: ASAS-SN now discovers about two-thirds of all bright (V<17 mag) supernovae. However, this systematic all-sky technique also leaves us with a movie of the sky and allows ASAS-SN to discover many other interesting galactic and extragalactic transients. During this talk, I will give an overview of the ASAS-SN survey, mention the significant contributions of amateur astronomers, and highlight some of our more interesting discoveries. These discoveries include ASASSN-15lh, likely the most luminous supernovae ever discovered, ASASSN-14lp, one of the earliest observed Type Ia supernovae, and ASASSN-14ae, ASASSN-14li, and ASASSN-15oi, the three nearest tidal disruption events discovered in the optical.


Ben Shappee

I am an observational and theoretical astrophysicist, who focuses on optical surveys and the transient universe. I am currently a Hubble and Carnegie-Princeton Fellow at Carnegie Observatories in Pasadena, CA. I recently completed my graduate education at the Department of Astronomy of The Ohio State University in Columbus, Ohio and I was an undergraduate at Rutgers University. I am a founding member of the All-Sky Automated Survey for Supernovae (ASAS-SN or "assassin"). This is the first survey to scan the entire sky for transient objects in real-time and is currently the leading discoverer of Supernovae brighter than 17th magnitude.


"What's Up?" in this month will be presented by Jim Benet

Pre-meeting Slide Show (~2 MB)
Club Announcements (~2 MB)
Meeting Video (YouTube)

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