NOAO >   Observing Info >   Approved Programs >   2009B-0516

Small NOAO Logo

Proposal Information for 2009B-0516


PI: Masaaki Otsuka, Space Telescope Science Institute, otsuka@stsci.edu
Address: SMO, 3700 San Martin Drive, Baltimore, MD 21218, USA

CoI: Margaret Meixner, Space Telescope Science Institute
CoI: Michael J. Barlow, University College London
CoI: Barbara Ercolano, University College London
CoI: Joanna Fabbri, University College London
CoI: Roger Wesson, University College London
CoI: Geoffrey C. Clayton, Luisiana State University
CoI: Ben E. Sugerman, Goucher College
CoI: Jennifer E. Andews, Luisiana State University
CoI: Joseph S. Gallagher, Luisiana State University
CoI: Mikako Matsuura, University College London

Title: A comprehensive study of dust formation in Type II Supernovae: the case of SN 2004et

Abstract: We propose high-resolution near-infrared photometry of the Type II supernova (SN), SN 2004et using WIYN/WHIRC. We have been monitoring SN 2004et for > 4 years using space telescopes and ground-based telescopes. Our recent observation for SN 2004et shows that this object has optical and IR-echoes. Optical and IR-echoes are very interesting and rare phenomenon among SNe, they are found in only 3 Type II SNe including SN 2004et, so far. Recent detections of many high redshift (\it z>2.5) infrared luminous galaxies suggest that in early galaxies Type II SNe play an important role as dust producers. However, there is large discrepancy (a factor of ~100) between the amounts of dust found in the early Universe, or predicted by nucleation theory, and inferred from SNe observations. Are Type II SNe really the main producers and triggers of dust formation in the early universe? To answer this, we need to investigate the dust around Type II SNe in detail, i.e., (1) when and where does the dust form and how much? (2) how is the amount of dust produced affected by the progenitor mass and the circumstellar environment? SN 2004et would provide us with the great opportunity to study these subjects by using WIYN/WHIRC.


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 >   2009B-0516

noaoprop-help@noao.edu

Small NOAO Logo