SN 2005df
2005 supernova event in the constellation Reticulum
title: "SN 2005df" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["supernovae", "reticulum", "astronomical-objects-discovered-in-2005", "2005-in-science"] description: "2005 supernova event in the constellation Reticulum" topic_path: "general/supernovae" source: "https://en.wikipedia.org/wiki/SN_2005df" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary 2005 supernova event in the constellation Reticulum ::
::data[format=table title="Infobox astronomical event"]
| Field | Value |
|---|---|
| name | SN 2005df |
| image | File:Supernova 2005dh and Spiral Galaxy NGC 1559.jpg |
| image_size | 300px |
| caption | SN 2005df is visible as the bright star just above the galaxy at center |
| event_type | Supernova |
| class | Type Ia |
| start_time | August 4, 2005 (UTC) |
| constellation | Reticulum |
| ra | |
| dec | |
| epoch | J2000 |
| gal | l = 274.49°, b = −41.2° |
| distance | 12.59 ± |
| redshift | 0.0043 |
| host | NGC 1559 |
| progenitor_type | white dwarf |
| notes | First supernovae observed in NGC 1559 since 1986; brightest of 2005. |
| peak | 12.3 |
| :: |
| name = SN 2005df | image = File:Supernova 2005dh and Spiral Galaxy NGC 1559.jpg | image_size = 300px | caption = SN 2005df is visible as the bright star just above the galaxy at center | alt = | names = | event_type = Supernova | class = Type Ia | start_time = August 4, 2005 (UTC) | duration = | detected_by = | constellation = Reticulum | ra = | dec = | epoch = J2000 | gal = l = 274.49°, b = −41.2° | distance = 12.59 ± | redshift = 0.0043 | source = | remnant = | host = NGC 1559 | progenitor = | progenitor_type = white dwarf | b-v = | notes = First supernovae observed in NGC 1559 since 1986; brightest of 2005. | peak = 12.3 | energy = | website = | predecessor = | successor = | commons = | embedded = SN 2005df was a Type Ia supernova in the barred spiral galaxy NGC 1559, which is located in the southern constellation of Reticulum. The event was discovered in Australia by Robert Evans on the early morning of August 5, 2005 with a 13.8 magnitude, and was confirmed by A. Gilmore on August 6. The supernova was classified as Type Ia by M. Salvo and associates. It was positioned at an offset of east and north of the galaxy's nucleus, reaching a maximum brightness of 12.3 on August 18. The supernova luminosity appeared unreddened by dust from its host galaxy.
The progenitor was a carbon-oxygen white dwarf close to the Chandrasekhar limit, making a merger scenario unlikely. Modelling of the explosion shows a low central density for a hydrogen accretion scenario, suggesting the donating companion was a helium star or a tidally-disrupted white dwarf. Alternatively, the progenitor may have undergone some form of central mixing.
References
| title=Celestial Blast in Bleak Reticulum | url=http://www.eso.org/public/news/eso0527/ | accessdate=18 May 2012 | newspaper=ESO Press Release }}
| title=Supernovae 2005dd, 2005de, and 2005df | last1=Evans | first1=R. | last2=Gilmore | first2=A. | journal=IAU Circular | volume=8580 | number=2 | date=August 2005 | page=2 | editor1-last=Green | editor1-first=D. W. E. | bibcode=2005IAUC.8580....2E }}
| title=Asiago Supernova Catalogue | last1=Barbon | first1=R. | last2=Buondi | first2=V. | last3=Cappellaro | first3=E. | last4=Turatto | first4=M. | display-authors=1 | date=2008 | journal=CDS/ADC Collection of Electronic Catalogues | volume=1 | bibcode=2008yCat....1.2024B }}
| title=List of Supernovae | website=Central Bureau for Astronomical Telegrams | publisher=International Astronomical Union | url=http://www.cbat.eps.harvard.edu/lists/Supernovae.html | access-date=2021-12-02 }}
| title=Supernova 2005df in NGC 1559 | display-authors=1 | last1=Salvo | first1=M. | last2=Schmidt | first2=B. | last3=Owers | first3=M. | journal=IAU Circular | volume=8581 | number=2 | date=August 2005 | page=2 | editor1-last=Green | editor1-first=D. W. E. | bibcode=2005IAUC.8581....2S }}
| title=Signatures of Delayed Detonation, Asymmetry, and Electron Capture in the Mid-Infrared Spectra of Supernovae 2003hv and 2005df | display-authors=1 | last1=Gerardy | first1=Christopher L. | last2=Meikle | first2=W. P. S. | last3=Kotak | first3=Rubina | last4=Höflich | first4=Peter | last5=Farrah | first5=Duncan | last6=Filippenko | first6=Alexei V. | last7=Foley | first7=Ryan J. | last8=Lundqvist | first8=Peter | last9=Mattila | first9=Seppo | last10=Pozzo | first10=Monica | last11=Sollerman | first11=Jesper | last12=Van Dyk | first12=Schuyler D. | last13=Wheeler | first13=J. Craig | journal=The Astrophysical Journal | volume=661 | issue=2 | pages=995–1012 | date=June 2007 | doi=10.1086/516728 | arxiv=astro-ph/0702117 | bibcode=2007ApJ...661..995G | s2cid=14053348 }}
| title=Optical and Infrared Photometry of SN 2005df | last1=Krisciunas | first1=Kevin | last2=Suntzeff | first2=Nicholas B. | last3=Espinoza | first3=Juan | last4=Gonzalez | first4=David | last5=Miranda | first5=Alberto | last6=Sanhueza | first6=Pedro | journal=Research Notes of the American Astronomical Society | volume=1 | issue=1 | id=36 | date=December 2017 | page=36 | doi=10.3847/2515-5172/aa9f18 | arxiv=1711.10345 | bibcode=2017RNAAS...1...36K | s2cid=119010500 | doi-access=free }}
| title=Late-time Near-infrared Observations of SN 2005df | display-authors=1 | last1=Diamond | first1=Tiara R. | last2=Hoeflich | first2=Peter | last3=Gerardy | first3=Christopher L. | journal=The Astrophysical Journal | volume=806 | issue=1 | id=107 | pages=16 | date=June 2015 | doi=10.1088/0004-637X/806/1/107 | arxiv=1410.6759 | bibcode=2015ApJ...806..107D | s2cid=118732067 }}
| title=Cosmicflows-2: The Data | last1=Tully | first1=R. Brent | last2=Courtois | first2=Hélène M. | last3=Dolphin | first3=Andrew E. | last4=Fisher | first4=J. Richard | last5=Héraudeau | first5=Philippe | last6=Jacobs | first6=Bradley A. | last7=Karachentsev | first7=Igor D. | last8=Makarov | first8=Dmitry | last9=Makarova | first9=Lidia | last10=Mitronova | first10=Sofia | last11=Rizzi | first11=Luca | last12=Shaya | first12=Edward J. | last13=Sorce | first13=Jenny G. | last14=Wu | first14=Po-Feng | display-authors=1 | journal=The Astronomical Journal | volume=146 | issue=4 | id=86 | pages=25 | date=October 2013 | bibcode=2013AJ....146...86T | arxiv=1307.7213 | doi=10.1088/0004-6256/146/4/86 | s2cid=118494842 }}
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