SN 2005bc
{{Short description|Supernova in the constellation Boötes}}
{{Infobox supernova
| name = SN 2005bc
| image = SN2005bc.JPG
| caption = SN 2005bc just over a week after peak brightness
| event_type = Supernova
| constellation = Boötes
| epoch = J2000.0
| gal = Long 66.76°
Lat 65.17°
| distance = {{Convert|39.63|Mpc|Mly|abbr=on|lk=on|order=flip}}
| redshift =
| host = NGC 5698
| progenitor_type = white dwarf
|discovery={{circa}} 129.3 million years ago
(detected 2 April 2005 by Tim Puckett and L. Cox)}}
SN 2005bc was a Type Ia supernova occurring in the barred spiral galaxy NGC 5698, located in the northern constellation of Boötes. SN 2005bc was discovered on 2 April 2005 by LOSS and independently by Tim Puckett and L. Cox. It was positioned at an offset of {{val|4.6|ul=arcsecond}} east and {{val|7.5|u=arcsecond}} north of the galactic nucleus. The supernova was at magnitude 16.4 at discovery, and quickly rose to a peak magnitude of around 15.3 (in visible light) just over a week after discovery. It showed an expansion velocity of {{val|12000|u=km/s|fmt=commas}}. By mid-May, the supernova had faded to 17th magnitude.
The host galaxy, NGC 5698, along with the supernova lie approximately 129 million light-years (~40 million parsecs) from Earth. As the supernova was of Type Ia, its progenitor star was a compact white dwarf star that exceeded the Chandrasekhar limit.
References
{{reflist|refs=
| title=Supernovae 2005az, 2005bb, and 2005bc
| last1=Burket | first1=J. | last2=Pugh | first2=H.
| last3=Li | first3=W. | last4=Puckett | first4=T.
| last5=Cox | first5=L. | display-authors=1
| journal=IAU Circular | date=April 2005
| volume=8504 | number=2
| page=2 | editor1-last=Green | editor1-first=D. W. E.
| bibcode=2005IAUC.8504....2B | postscript=. }}
| title=Supernova 2005bc in NGC 5698
| last1=Modjaz | first1=M. | last2=Kirshner | first2=R.
| last3=Challis | first3=P. | last4=Nutzman | first4=P.
| journal=Central Bureau Electronic Telegrams
| volume=132 | number=1 | date=April 2005
| page=1 | editor1-last=Green | editor1-first=D. W. E.
| bibcode=2005CBET..132....1M | postscript=. }}
| title=Asiago Supernova Catalogue | display-authors=1
| last1=Barbon | first1=R. | last2=Buondi | first2=V.
| last3=Cappellaro | first3=E. | last4=Turatto | first4=M.
| work=CDS/ADC Collection of Electronic Catalogues | date=2008
| volume=1
| bibcode=2008yCat....1.2024B | postscript=. }}
| last1=Tully | first1=R. Brent | last2=Courtois | first2=Hélène M.
| last3=Sorce | first3=Jenny G. | display-authors=1
| title=Cosmicflows-3 | journal=The Astronomical Journal
| volume=152 | issue=2 | id=50 | pages=21 | date=August 2016
| doi=10.3847/0004-6256/152/2/50 | bibcode=2016AJ....152...50T
| arxiv=1605.01765 | s2cid=250737862 | postscript=. | doi-access=free }}
}}
External links
- [https://sne.space/sne/SN2005bc/ Light curves and spectra] {{Webarchive|url=https://web.archive.org/web/20171202203132/https://sne.space/sne/SN2005bc/ |date=2017-12-02 }} on the [https://sne.space Open Supernova Catalog] {{Webarchive|url=https://web.archive.org/web/20160303230459/https://sne.space/ |date=2016-03-03 }}
- [http://cbat.eps.harvard.edu/iauc/08500/08504.html#Item2 IAUC 8504]
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