Change search
ReferencesLink to record
Permanent link

Direct link
A Spitzer Space Telescope Study of SN 2003gd: Still No Direct Evidence that Core-Collapse Supernovae are Major Dust Factories
Show others and affiliations
2007 (English)In: The Astrophysical Journal, Vol. 665, no 1, 608-617 p.Article in journal (Refereed) Published
Abstract [en]

We present a new, detailed analysis of late-time mid-infrared observations of the Type II-P supernova (SN) 2003gd. At about 16 months after the explosion, the mid-IR flux is consistent with emission from 4×10-5 Msolar of newly condensed dust in the ejecta. At 22 months emission from pointlike sources close to the SN position was detected at 8 and 24 μm. By 42 months the 24 μm flux had faded. Considerations of luminosity and source size rule out the ejecta of SN 2003gd as the main origin of the emission at 22 months. A possible alternative explanation for the emission at this later epoch is an IR echo from preexisting circumstellar or interstellar dust. We conclude that, contrary to the claim of Sugerman and coworkers, the mid-IR emission from SN 2003gd does not support the presence of 0.02 Msolar of newly formed dust in the ejecta. There is, as yet, no direct evidence that core-collapse supernovae are major dust factories.

Place, publisher, year, edition, pages
2007. Vol. 665, no 1, 608-617 p.
Keyword [en]
Stars: Supernovae: General, supernovae: individual (SN 2003gd)
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-11338DOI: doi:10.1086/519733ISI: 000248675700043OAI: diva2:177857
Available from: 2008-01-11 Created: 2008-01-11 Last updated: 2011-01-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Sollerman, JesperLundqvist, Peter
By organisation
Department of Astronomy
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 25 hits
ReferencesLink to record
Permanent link

Direct link