J/MNRAS/436/774 Core collapse supernovae (type Ibc) (Eldridge+, 2013)
The death of massive stars.
II. Observational constraints on the progenitors of type Ibc supernovae.
Eldridge J.J., Fraser M., Smartt S.J., Maund J.R., Crockett R.M.
<Mon. Not. R. Astron. Soc., 436, 774-795 (2013)>
=2013MNRAS.436..774E 2013MNRAS.436..774E
ADC_Keywords: Supernovae
Keywords: binaries: general - stars: evolution - supergiants -
supernovae: general - stars: Wolf-Rayet
Abstract:
The progenitors of many Type II core-collapse supernovae (SNe) have
now been identified directly on pre-discovery imaging. Here, we
present an extensive search for the progenitors of Type Ibc SNe in all
available pre-discovery imaging since 1998. There are 12 Type Ibc SNe
with no detections of progenitors in either deep ground-based or
Hubble Space Telescope archival imaging. The deepest absolute
BVR magnitude limits are between -4 and -5mag. We compare these
limits with the observed Wolf-Rayet population in the Large Magellanic
Cloud and estimate a 16 percent probability that we have failed to
detect such a progenitor by chance. Alternatively, the progenitors
evolve significantly before core-collapse or we have underestimated
the extinction towards the progenitors. Reviewing the relative rates
and ejecta mass estimates from light-curve modelling of Ibc SNe, we
find both incompatible with Wolf-Rayet stars with initial masses
>25M☉ being the only progenitors. We present binary evolution
models that fit these observational constraints. Stars in binaries
with initial masses ≲20M☉ lose their hydrogen envelopes in
binary interactions to become low-mass helium stars. They retain a
low-mass hydrogen envelope until ∼104yr before core-collapse;
hence, it is not surprising that Galactic analogues have been
difficult to identify.
Description:
We have followed the methodology of Paper I (Smartt et al.,
2009MNRAS.395.1409S 2009MNRAS.395.1409S) in sample selection. The list of SNe maintained
by the International Astronomical Union (IAU) Central Bureau for
Astronomical Telegrams (CBET) was searched for all SNe with a named
host galaxy discovered in the 14yr period from 1998 January 1 to
2012 March 30. This sample was then cross-matched against the
HyperLEDA galaxy data base to identify all SNe for which the host
galaxy had a recessional velocity (corrected for Local Group infall on
Virgo) of 2000km/s or less, corresponding to a distance limit of
28Mpc for H0=72km/s/Mpc. For SNe where there was not a
named host in the IAU catalogue, HyperLEDA was searched for any galaxy
within 1.5-arcmin of the SN position. Finally, the coordinates of any
SNe which did not have a named host or a galaxy within 1.5-arcmin and
was brighter than magnitude 16 were queried via the NASA Extragalactic
Database (NED).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 106 201 Core collapse SNe discovered between 1998-2012.25
in galaxies with recessional velocities less
than 2000km/s
refs.dat 100 203 References
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- n_SN Code for supernoa type (1)
4- 18 A15 --- SN SN name
20- 32 A13 --- Gal Host galaxy name
36- 41 F6.1 km/s Vvir ? Host galaxy recessional velocity, corrected
for the Local Group infall on Virgo
43- 54 A12 --- Type SN type
56- 58 A3 --- HSTFOV [in/out ] notes if the host galaxy has been
observed by HST prior to explosion and if the
position of the SN is "in" or "out" of the
camera field-of-view
60- 96 A37 --- Com References code in brackets (in refs.dat file)
and comments
98 A1 --- Notes [12345]? Individual notes (2)
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Note (1): Code as follows:
C = Core-collapse
Ia = Type Ia
Un = Unclassified
U = Uncertain or non-supernova
Note (2): Notes as follows:
1 = SNe 2002ao and 2006jc have been termed Ibn as they show narrow He lines
due to circumstellar He rich shells. We adopt Ic rather than Ibn as that
more accurately reflects the nature of the event.
2 = http://www.supernovae.net/sn2004/sn2004gn.jpg
3 = Although Vvir outside limit, the TF/SBF distance from Tonry et al.
(2000ApJ...530..625T 2000ApJ...530..625T) puts it within our distance limit and so it is
included
4 = SNe 2002ao and 2006jc have been termed Ibn as they show narrow He lines
due to circumstellar He rich shells. We adopt Ic rather than Ibn as that
more accurately reflects the nature of the event.
5 = http://etacar.umn.edu/etainfo/related/
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Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Ref Reference code
5- 23 A19 --- BibCode BibCode
25- 67 A43 --- Aut Author's name
69- 89 A21 --- Com Comments
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History:
From electronic version of the journal.
The "Gal" column in tablea1 was fixed for "NC2997", "E121-G26",
"E209-G09", "M-01-39-03", "M-03-11-19" and "M-03-23-11"
References:
Smartt et al., Paper I 2009MNRAS.395.1409S 2009MNRAS.395.1409S
(End) Patricia Vannier [CDS] 19-Oct-2014