SN 2011dh
| Event type | Supernova |
|---|---|
| IIb[1][2] | |
| Date | 31 May 2011[3] |
| Constellation | Canes Venatici |
| Right ascension | 13h30m05.08s[4][5] |
| Declination | +47° 10′ 11.2″[4][5] |
| Epoch | J2000 |
| Host | Whirlpool Galaxy(M51) |
| Progenitor | ? |
| Progenitor type | yellow supergiant[6][7] |
| Colour(B-V) | ? |
| Peakapparent magnitude | 12.1[8] |
| Other designations | SN 2011dh, [RMS2015] J133005+471010 |
SN 2011dhwas asupernovain theWhirlpool Galaxy(M51). It was discovered on 31 May 2011, with anapparent magnitude13.5.[4]and confirmed by several sources, including thePalomar Transient Factory.[5]A candidate progenitor was detected inHubble Space Telescopeimages.[9]The progenitor may have been a highly luminousyellow supergiantwith an initial mass of 18-24solar masses.[6]The supernova peaked nearapparent magnitude12.1 on 19 June 2011.[8]Emission spectraindicated that the explosion was atype II supernova,in which a massive star collapses oncenuclear fusionhas ceased in its core.[4]
SN2011dh was the third supernova to be recorded in the Whirlpool galaxy since 1994 (followingSN 1994IandSN 2005cs).[10]The supernova frequency in theMilky Wayis estimated to be around one event every 40 years.[11]
References
[edit]- ^"ATEL 3413: PTF11eon/SN2011dh is Possibly a Type IIb Event".Astronomers Telegram. 2011-06-08.Retrieved2011-06-08.
- ^"Early Optical Spectroscopy of SN 2011dh in M51".Astronomers Telegram. 2011-06-12.Retrieved2011-06-14.
- ^Kelly Beatty (June 3, 2011)."Supernova Erupts in Whirlpool Galaxy".Sky and Telescope.Retrieved2011-06-06.
- ^abcdRichard Kinne (kqr) (2011-06-03)."AAVSO Special Notice #241: New Supernova in M51".AAVSO.Retrieved2011-06-06.
- ^abc"ATEL 3398: PTF Discovery of a Type II Supernova in M51".Astronomers Telegram. 2011-06-03.Retrieved2011-06-06.
- ^ab"ATEL 3401: Properties of the Candidate Progenitor of SN 2011dh in M51".Astronomers Telegram. 2011-06-03.Retrieved2011-06-06.
- ^Matson, John (2013). "Sayonara, Supergiant".Scientific American.309(5): 18–9.doi:10.1038/scientificamerican1113-18a.PMID24283007.
- ^abDavid Bishop."Supernovae 2011dh in M51".supernovae.net (International Supernovae Network).Retrieved2011-06-06.
- ^"ATEL 3399: POSSIBLE PROGENITOR OF THE NEW TYPE II SN IN M51".Astronomers Telegram. 2011-06-03.Retrieved2011-06-06.
- ^Nemiroff, R.; Bonnell, J., eds. (5 June 2011)."Another Nearby Supernova in the Whirlpool Galaxy".Astronomy Picture of the Day.NASA.
- ^Tammann, G. A.; Loeffler, W.; Schroeder, A. (June 1994)."The Galactic supernova rate".The Astrophysical Journal Supplement Series.92(2): 487–493.Bibcode:1994ApJS...92..487T.doi:10.1086/192002.
External links
[edit]- Light curves and spectraArchived2017-10-22 at theWayback Machineon theOpen Supernova Catalog
- GIF animation of pre and post images of SN 2011dh
- Views of the developing supernova
- SN 2011dh progenitor?
- Magnitude comparison 2011-06-02
- Twitter Helps Astronomers Zero-In on M51 SupernovaArchived2012-09-30 at theWayback Machine(Jun 6, 2011 Ian O'Neill)
- M51 (Whirlpool Galaxy)at Las Cumbres Observatory on 6 Jun 2011
- Supernova sn2011dh in M51 is brightening!(June 14, 2011 Ian Musgrave)
- PTF11eon/SN2011dh: Discovery of a Type IIb Supernova From a Compact Progenitor in the Nearby Galaxy M51(arXiv:1106.3551: 17 Jun 2011)
- Panchromatic Observations of SN 2011dh Point to a Compact Progenitor Star(arXiv:1107.1876: 10 Jul 2011)
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