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If you would like to receive announcements for supernovae identified by the
CfA SN group, please contact:
SN 2008
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SN 2008cg (FGC 1965) (IIn)
[CBET 1368]
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May 8, 2008 UT, FLWO 1.5m spectrum shows this
type-IIn supernova, compared with a spectrum of 1999Z taken on UT 1999
Feb. 9.
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SN 2008ce (NGC 4428) (II)
[CBET 1364]
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May 4, 2008 UT, FLWO 1.5m spectrum shows this
type-II supernova several weeks past explosion.
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SN 2008cd (NGC 5038) (Ia)
[CBET 1362]
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April 30, 2008 UT, FLWO 1.5m spectrum shows this
reddened type-Ia supernova around maximum light. The spectrum
is heavily contaminated by the underlying host galaxy.
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SN 2008bx (MCG +07-31-004) (II)
[CBET 1359]
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April 29, 2008 UT, FLWO 1.5m spectrum shows this
young type-II supernova.
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SN 2008bt (NGC 3404) (Ia-91bg)
[CBET 1337]
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April 15, 2008 UT, FLWO 1.5m spectrum shows this
subluminous type-Ia supernova around maximum light, compared with
1991bg at a similar age.
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SN 2008bl (UGC 9317) (II)
[CBET 1318]
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March 29, 2008 UT, FLWO 1.5m spectrum shows this
young type-II supernova.
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SN 2008bg (Anon. galaxy) (Ia)
[CBET 1308]
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March 15, 2008 UT, FLWO 1.5m spectrum shows this
type-Ia supernova around maximum light, compared with 1994ae
at a similar age.
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SN 2008az (UGC 10721) (II)
[CBET 1295]
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March 10, 2008 UT, FLWO 1.5m spectrum shows this
type-IIP supernova around 3-4 weeks past explosion, compared with
1999em at a similar age.
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SN 2008ax (NGC 4990) (II-pec -> IIb)
[CBET 1285]
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March 4, 2008 UT, FLWO 1.5m spectrum shows this
young peculiar type-II supernova, compared with 1987A at 2 days past explosion.
Note that 2008X1 has been dereddened by 0.6 mag in this plot.
NEW: He lines have developped in the optical spectrum,
hence a new IIb classification.
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SN 2008aw (NGC 4939) (II)
[CBET 1282]
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March 4, 2008 UT, FLWO 1.5m spectrum shows this
young type-II supernova.
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SN 2008at (UGC 5645) (Ia)
[CBET 1287]
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March 5, 2008 UT, FLWO 1.5m spectrum shows this
type-Ia supernova around one week past maximum, compared with 2001ep
at a similar age.
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SN 2008as (ESO 567- G057) (Ia)
[CBET 1276]
-
March 1, 2008 UT, Magellan Clay 6.5m spectrum shows this
type-Ia supernova around one month past maximum light, compared with 1996X
at a similar age.
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SN 2008aq (MCG -02-33-020) (II/IIb?)
[CBET 1271]
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February 28, 2008 UT, FLWO 1.5m spectrum shows this
type-II/IIb supernova around one week before maximum, compared with 2006T
at a similar age.
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SN 2008ao (CGCG 524-054) (Ic)
[CBET 1274]
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February 29, 2008 UT, FLWO 1.5m spectrum shows this
type-Ic supernova around maximum, compared with 1994I
at a similar age.
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SN 2008an (UGC 10936) (Ic)
[CBET 1271]
-
February 28, 2008 UT, FLWO 1.5m spectrum shows this
type-Ic supernova around maximum, compared with 1994I
at a similar age.
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SN 2008af (UGC 9640) (Ia)
[CBET 1253]
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February 11, 2008 UT, FLWO 1.5m spectrum shows this
type-Ia supernova around one week past maximum, compared with 1992A
at a similar age.
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SN 2008ae (IC 577) (Ia-pec)
[CBET 1250]
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February 10, 2008 UT, FLWO 1.5m spectrum shows this
peculiar type-Ia supernova around one week before maximum, compared with 2005hk
at a similar age.
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SN 2008Z (Anon. galaxy) (Ia)
[CBET 1246]
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February 9, 2008 UT, FLWO 1.5m spectrum shows this
type-Ia supernova before maximum light, compared with 2003du at 6 days before maximum.
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SN 2008Y (MCG +9-19-39) (Ia)
[CBET 1246]
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February 9, 2008 UT, FLWO 1.5m spectrum shows this
type-Ia supernova around maximum light, compared with 2005cf at 5 days past maximum.
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SN 2008X (NGC 4141) (IIP)
[CBET 1242,
CBET 1300]
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February 8, 2008 UT, FLWO 1.5m spectrum shows this
type-IIP supernova around 3-4 weeks past explosion.
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SN 2008U (UGC 8917) (II)
[CBET 1242,
CBET 1300]
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February 8, 2008 UT, FLWO 1.5m spectrum shows this
possible "supernova impostor" (LBV). It could also be a type-IIn in its early stages
or a low-luminosity type-IIP past the recombination phase (A. Pastorello, priv. comm.)
NEW: Re-analysis of the same data show that 2008U is in fact a type-II during the
hydrogen recombination phase (see CBET 1300).
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SN 2008G (UGC 2851) (IIP)
[CBET 1209]
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January 14, 2008 UT, FLWO 1.5m spectrum shows this
type-II supernova around three weeks past explosion, compared with 2004et.
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SN 2008F (MCG -01-8-15) (IIP)
[CBET 1209]
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January 14, 2008 UT, FLWO 1.5m spectrum shows this
type-II supernova around one week past explosion, compared with 1999gi.
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SN 2008D (NGC 2770) (Ic-broad)
[CBET 1204,
CBET 1205]
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January 11, 2008 UT, MMT 6.5m spectrum shows this
peculiar type-Ic supernova around maximum light, compared with
1990aa and 1998bw.
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SN 2008B (NGC 5829) (IIn)
[CBET 1201]
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January 10, 2008 UT, FLWO 1.5m spectrum shows this
type-IIn supernova around maximum light, compared with 2000eo
at a similar age.
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SN 2008A (NGC 634) (Ia-pec)
[CBET 1198]
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January 5, 2008 UT, FLWO 1.5m spectrum shows this
peculiar type-Ia supernova around one week before maximum, compared with 2005hk
at a similar age.
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