NOAO >   Observing Info >   Approved Programs >   2017B-0279

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Program Information for 2017B-0279


PI: Armin Rest, STScI, arest@stsci.edu
Address: 3700 San Martin Dr., Baltimore, MD 21218 USA

CoI: Federica Bianco, NYU
CoI: Alejandro Clocchiatti, Pontificia Universidad Catolica de Chile
CoI: Ryan Foley, UC Santa Cruz
CoI: David James, U. of Washington
CoI: Charles Kilpatrick, UC Santa Cruz
CoI: Thomas Matheson, NOAO
CoI: Gautham Narayan, NOAO
CoI: Knut Olsen, NOAO
CoI: Sean Points, CTIO
CoI: Jose Luis Prieto, Universidad Diego Portales
CoI: R Chris Smith, CTIO
CoI: Nathan Smith, U. of Arizona
CoI: Nicholas B Suntzeff, Texas A&M U.
CoI: Doug Welch, McMaster U.
CoI: Alfredo Zenteno, CTIO

Title: Light Echoes of Galactic Explosions and Eruptions

Abstract: We propose to continue our search for light echoes (LEs) from the historical brightening of the Luminous Blue Variable (LBV) P Cygni using the KPNO 4m Mosaic-3 imager. We also propose to use DECam to continue our search for LEs from the Crab supernova, SN~1054. In addition, we will monitor known LEs from the Cas~A and Tycho supernovae in order to identify suitable LE candidates for 3D-spectroscopy and spectral time series with 10m-class telescopes and {it HST}. In previously granted NOAO time, we have discovered LEs of three ancient SNe in the LMC as well as from the historic SN events of Cas~A and Tycho, which allowed their spectroscopic classification and 3D spectroscopy. Most recently, we discovered light echoes of the mid-19th-century Great Eruption of $eta$~Carinae using CTIO 4m Mosaic images. Subsequent spectroscopic follow-up of Eta Carinae revealed that its outburst spectral type was most similar to those of G-type supergiants, rather than reported LBV outburst spectral types of F-type (or earlier). Our extension of LE techniques to LBV outbursts promises to extend our ability to record outburst activity hundreds of years into the past --- a timescale which is likely a significant fraction of the brief final phases of these probable core-collapse supernova precursors.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017B):  KP-4m/MOSA3 -- 2n on Aug 18 - Aug 19 2017
Run 2 (2017B):  KP-4m/MOSA3 -- 2n on Sep 18 - Sep 19 2017
Run 3 (2017B):  KP-4m/MOSA3 -- 2n on Oct 23 - Oct 24 2017
Run 4 (2017B):  CT-4m/DECam -- 2.5n on Jan 22 - Jan 26 2018


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



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