SN 2001el Ia in NGC 1448
OBJECT: SN 2001el Ia in NGC 1448 (Sc galaxy) which in Leda is
NGC 1448 (Leda).
DISCOVERY: 2001sep21.3 UT by Monard.
MAXIMUM: 2001sep30.0 (JD 2452182.5) in B (krisciunas2003): wang2003 and mattila2005 adopt this value too.
See the US Navy Observatory Julian Date Converter.
This day of the year 273.
SUPERNOVA of the YEAR: M = 142.
HEADER: Header Common header information for this supernovae.
The common header may (or may not) be updated relative to the header information here
(D. J. Jeffery (2007jan01)).
SPECTRUM LOG:
JD times for the SN 2001el spectra of wang2003 and mattila2005
Bmax from krisciunas2003 where the full JD Bmax is JD 2452182.5
As far as I know this is the complete log of the mattile2005
and wang2003 spectra.
3 mattila2005 dates.
5 wang2003 dates.
I know of know other spectra.
JD Bmax heliocentric velocity (Leda)
2182.5d0 1168.d0
Heliocentric velocity Z redshift
1168.0000000000 0.0038960286
Index JD of some kind Observer phase Rest phase
1 2173.7650000000 -8.7350000000 -8.7011002642 ! mattila2005 2001sep21.265 3300--10079 (observed)
2 0.0000000000****************************** ! 4-spectrum composite.
3 2178.7950000000 -3.7050000000 -3.6906212340 ! wang2003 2001sep26.295 4163--8603 (rest)
4 0.0000000000****************************** ! 2-spectrum composite.
5 2180.7570000000 -1.7430000000 -1.7362355765 ! mattila2005 2001sep28.257
6 0.0000000000****************************** ! 3-spectrum composite.
7 2183.7050000000 1.2050000000 1.2003235053 ! wang2003 2001oct01.205 4201.06--8588.07999999992 (rest)
8 2191.7540000000 9.2540000000 9.2180860727 ! wang2003 2001oct09.254 3308.75--8586.12999999991 (rest)
9 0.0000000000****************************** ! 3-spectrum compossite.
10 2200.6760000000 18.1760000000 18.1054606071 ! wang2003 2001oct18.176 3308.82--8585.86999999992 (rest)
11 0.0000000000****************************** ! 2-spectrum composite.
12 2222.6010000000 40.1010000000 39.9453716882 ! wang2003 2001nov09.101
13 2580.6500000000 398.1500000000 396.6048162802 ! mattila2005 2002nov02.15
REFERENCES:
CfA List of Supernovae
where SN 2000cx is noted.
CfA Supernova Archive
This has 0 SN 2001el spectra and 0 photometry.
conley2006 General value
of 19.4 days for Ia rise time in B.
krisciunas2003 On SN 2001el photometry.
mattila2005 Specifically on SN 2001el
early and late spectra. There are only 3 and we only seem to have the earliest one from 2001sep21.
paturel2003 (Leda) Leda refererence.
SUSPECT Index.
SUSPECT Index: SN 2001el Ia.
There are 5 spectra all from wang2003.
wang2003 Specifically on SN 2001el spectra
day +9 to +53 and spectropolarimetry.
CORRECTIONS: heliocentric velocity 1168 +/- 5 km/s [2007jun29] from
NGC 1448 (Leda).
Galactic foreground 0.06/4=.015 reddening from
NGC 1448 (Leda).
But this is derived from
Schlegel et al. (1998)
not smoothed ????, not photometric ????
Derived bolometric maximum is ??? (see above).
COMMENTS: It seems pretty clear that the SUSPECT wang2003 spectra have been deredshifted.
The telluric line has been removed and so it is hard to tell.
But the place that it has been removed seems to be it's blueshifted location. See f4.ps
Also the two version of the 2001sep26 (Branch and SUSPECT) agree best when no
deredshifting corrections are applied and the Branch-version is clearly deredshifted
since it has the telluric line. See f5.ps.
The two version don't seem to have quite the same deredshifting or be quite the
same in other respects especially on the red side.
I have assume that all the SUSPECT spectra have been deredshifted.
OBSERVATIONS: From
1) David Branch in /home/branch/synow/01el: Seems to just have the mattila2005 2001sep21 spectrum.
But he also has different versions of the wang2005 spectra from SUSPECT. But they
are not easy to find.
2) Eddie Baron: Seems to just have the mattila2005 2001sep21 spectrum.
3) SUSPECT: the 5 wang2003 spectra.
PHASE:
For consistency we always use rest phase and for explicitness to more digits than are significant.
observer phase =
rest phase =
&specnamelist
aname='sn2001el Ia 2001_09_'
ebv=.015 !
epoch= ! This parameter needs to updated for the particular spectrum.
idifmake=0
iformat=1
ismooth=0 ! Smoothing?
itick=2
itickln=4
t_rise=19.4d0 ! conley2006, just an average rise time.
v_helio=1168.
ymin2=.2d-16
ymax2=100.d-16
ymin3=.3
ymax3=3.
wlammin1=
wlammax1=
wlammin2=
wlammax2=
wlammin3=
wlammax3=
/
Postscript plot of the spectrum.
Postscript plot of the spectrum with local normalization.
Information from somewhere and someone:
