NOAO >   Observing Info >   Approved Programs >   2016B-0265

Small NOAO Logo

Program Information for 2016B-0265


PI: Dacheng Lin, U. of New Hampshire, dacheng@dachenglin.com
Address: USA

CoI: Aaron Romanowsky, University of California Observatories
CoI: Jimmy Irwin, University of Alabama

Title: Measuring the distance to a supercritically accreting tidal disruption event candidate with Gemini

Abstract: We have discovered a new candidate X-ray tidal disruption event. It was serendipitously detected in a recent XMM-Newton observation, showing a very soft X-ray spectrum. However, the characteristic temperature of kT~0.3 keV is much higher than previous candidates or thermal disk around a supermassive black hole (SMBH), but could signal a super-Eddington state characterized by an optically thick low-temperature corona emission. It thus provides a unique opportunity to study the supercritical accretion onto SMBHs. We propose for a 2 hr Gemini spectroscopic observation to measure the redshift and nuclear activity of the host galaxy, in order to calculate the energetics of our event, to test our tidal disruption event explanation of the source, and to estimate the central black hole mass.

Program Type: Standard/Extragalactic

Scheduled Nights:
Run 1 (2016B):  GEM-SQ/GMOSS -- 5hrs band 3 (GS-2016B-Q-75)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2016B-0265

noaoprop-help@noao.edu

Small NOAO Logo