NOAO >   Observing Info >   Approved Programs >   2015B-0307

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Program Information for 2015B-0307


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

CoI: Federica Bianco, NYU
CoI: Ryan Chornock, Harvard-Smithsonian Center for Astrophysics
CoI: Alejandro Clocchiatti, Pontificia Universidad Catolica de Chile
CoI: Ryan Foley, U. of Illinois Urbana-Champaign
CoI: David James, CTIO
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: Douglas Welch, McMaster U.
CoI: Alfredo Zenteno, CTIO

Title: Light Echoes of Galactic Explosions and Eruptions

Abstract: We propose to search for light echoes (LEs) from the historical brightening of the Luminous Blue Variable (LBV) P Cygni using the KPNO 4m Mosaic 1.1 imager. We also propose to us DECam to continue our search for LEs from the the Crab supernova SN~1054. In addition, we continue to monitor the LEs from the Cas~A and Tycho supernovae in order to identify suitable LE candidates for 3D-spectroscopy and spectral time series. In previously granted NOAO time, we have discovered light echoes of three ancient SNe in the LMC as well as from the historic SN events of Cas~A and Tycho [2, 3], which allowed their spectroscopic classification [6, 7, 10] and 3D spectroscopy [8, 9]. Most recently, we discovered light echoes of the mid-19th-century Great Eruption of $\eta$~Carinae using CTIO 4m Mosaic images [11]. 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) [11]. 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 (2015B):  KP-4m/MOSA -- 3.5n on Aug 13 - Aug 17 2015, Sep 11 2015
Run 2 (2015B):  KP-4m/MOSA -- 2n on Sep 14 2015, Oct 11 2015
Run 3 (2015B):  KP-4m/MOSA3 -- 1n on Jan 08 - Jan 09 2016
Run 4 (2015B):  CT-4m/DECam -- 2.5n on Aug 09 - Aug 10 2015, Sep 03 2015, Dec 31 2015, Jan 19 2016


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 >   2015B-0307

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