SN 2000cx Ia in NGC 524
OBJECT: SN 2000cx Ia in (SO-a galaxy) which in Leda is
NGC 524: Leda.
DISCOVERY: 2000jul17.5 UT by the Lick Observatory Supernova Search (LOSS).
MAXIMUM: 2000jul26.7 +/- 0.1 UT (JD 2451752.2 +/- 0.1) in B (li2001; jha2006).
See the US Navy Observatory Julian Date Converter.
This day of the year 208 and remember 2000 was a leap as a century
year divisible by 4.
SUPERNOVA of the YEAR: M = 102.
HEADER: Header Common header information for this supernovae.
The common header may (or may not) be updated relative to the header information given here
(D. J. Jeffery (2007jan01)).
SPECTRUM LOG:
JD times for the SN 2000cx spectra of li2001
Bmax 2000jul26.7 +/- 0.1 UT (JD 2451752.2 +/- 0.1) (li2001; jha2006).
I believe all li2001 spectra are rest frame.
li2001 has not provided UTs or JDs.
But all the observations were from Lick and so must have UT .3 +/- .3.
So we can estimate the JDs.
JD Bmax Heliocentric velocity (Leda, 2007jul04)
1752.2 2423.
Heliocentric velocity Z redshift
2423.0000000000 0.0080822580
Index JD of some kind Observer phase Rest phase
1 1748.8000000000 -3.4000000000 -3.3727406399 ! li2001 2000jul23.3 not yet in SUSPEND.
2 1751.8000000000 -0.4000000000 -0.3967930165 ! li2001 2000jul26.3 3819.03--7141.47 (rest)
3 1758.8000000000 6.6000000000 6.5470847716 ! li2001 2000aug02.3 3323.05--10299.85 (rest)
4 1771.8000000000 19.6000000000 19.4428578064 ! li2001 2000aug15.3 3918.23--7389.17 (rest)
5 1841.5000000000 89.3000000000 88.5840409242 ! li2001 2000oct24.3 3273.46--10315.81 (rest)
REFERENCES:
CfA List of Supernovae
where SN 2000cx is noted.
CfA Supernova Archive
This has 0 SN 2000cx spectra, but does have photometry reported by jha2006.
conley2006 General value
of 19.4 days for Ia rise time in B.
jha2006 SN 2000cx photometry, but no spectra.
Bmax is HJD 2451752.2.
paturel2003 (Leda) Leda refererence.
li2001 SN 2000cx spectra.
SUSPECT Index.
SUSPECT Index: SN 2000cx Ia.
There are 27 spectra all from li2001, except li2001 report only 26 spectra: one may be a redundant spectrum.
They give Bmax as JD 2451752.2 +/- 0.1 which agrees with jha2006.
CORRECTIONS: heliocentric velocity 2423 +/- 37 km/s [2007jun29] from
NGC 524: Leda.
Galactic foreground 0.36/4=.09 reddening from
NGC 524: Leda.
But the reddening is derived from
Schlegel et al. (1998)
OBSERVATIONS: From
1) David Jeffery: no old catalog
2) David Branch: some in /home/branch/synow/sn2002cx, but whose or when is unclear.
3) Eddie Baron: some, but they seem to be just li2001 spectra.
4) SUSPECT: 27 li2001 spectra and that's all.
DATE: 2000 with 2000jul26.7 +/- 0.1 UT (JD 2451752.2 +/- 0.1) for Bmax gives:
day = - 2451752.2 =
At present, precise UT and JD dates have to be estimated as they are not given.
As a check the author phase is given.
author phase =
For consistency we always use rest phase and for explicitness to more digits than are significant.
observer phase =
rest phase =
&specnamelist
aname='sn2000cx Ia 2000_07_'
ebv=.09 ! The spectra from Li2001 have been corrected for extinction with E(B-V)=0.08.
epoch= ! This parameter needs to updated for the particular spectrum.
idifmake=0
iformat=-1 ! All the li2001 spectra are not deredshifted it seems. The
! SUSPECT header says this. Li2001 spectrum plot are supposed
! to be deredshifted and they agree with the numbers as far as
! I can tell. The 7600 A telluric line has been removed, but
! but the 6867 A line is there it seems and seemingly blueshifted
! to 6812 A or so as one would expect.
ismooth=0 ! Smoothing ?
itick=2
itickln=4
t_rise=19.4d0 ! conley2006: just an average rise time.
v_helio=2423.
ymin2=.1d0
ymax2=100.d0
ymin3=.3
ymax3=3.
wlammin1=
wlammax1=
wlammin2=
wlammax2=
wlammin3=
wlammax3=
/
Postscript plot of the spectrum.
Postscript plot of the spectrum with local normalization.
FITS: Fits format information from the observers.
