SN 1999ac Ia in NGC 6063
OBJECT: SN 1999ac Ia in NGC 6063 (Sc galaxy) which in Leda is
NGC 6063 (Leda).
DISCOVERY: 1999feb26.5 UT by Modjaz et al.
MAXIMUM: Bmax 1999mar13.5 (JD 2451251.0 +/- 0.5) in B (phillips2006).
JD 2451251.2 (jha2006)
Both values are of the same vintage from
comparably skilled groups, one might as well choose one as the other and I'' stick with phillips2006.
See the US Navy Observatory Julian Date Converter.
This day of the year 72.
SUPERNOVA of the YEAR: M = 29.
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)).
COMMENTS: This is a shallow silicon (SS) SN Ia.
REFERENCES:
CfA List of Supernovae
where SN 1999ac is noted.
CfA Supernova Archive
This has 0 SN 1999ac spectra, but there is photometry in jha2006.
conley2006 General value
of 19.4 days for Ia rise time in B.
garavini2005 Specifically on SN 1999ac.
jha2006 Gives
SN 1999ac B max date of JD 2451251.2 (on p. 549) and these guys are also light curve experts.
paturel2003 (Leda) Leda refererence.
phillips2006 Specifically on SN 1999ac.
There is photometry and 4 spectra.
SUSPECT Index.
SUSPECT Index: SN 1999ac Ia.
There are 12 SN 1999ac spectra from garavini2005. Two are missing: one's a duplicate, but the day 24
spectrum would be good to have.
CORRECTIONS: Heliocentric velocity 2848 +/- 3 km/s [2007jun27] from
NGC 6063 (Leda).
Galactic foreground reddening 0.20/4=.05 from
NGC 6063 (Leda).
This is given by
Schlegel et al. (1998).
OBSERVATIONS: From
1) SUSPECT: these are all garavini2005 spectra, except the day +24 one.
2) Eddie Baron: none.
3) David Branch /home/branch/synow/99ac: garavini2005 spectra and
3 of the 4 phillips2006 spectra. Why only 3.
SPECTRUM LOG:
JD times for the SN 1999ac spectra of garavini2005 and phillips2006.
Bmax 1999mar13.5 (JD 2451251.0 +/- 0.5) in B (phillips2006).
The garavini2005 spectra seem to be all in the rest frame.
They give rest-frame wavelength in their Table 1 and the
ranges correspond to the spectra from SUSPECT.
phillips2006 give observer-frame since the 7600 A telluric line
is unshifted in the feb28, mar11, and mar21.
JD Bmax Heliocentric velocity (Leda, 2007jul01)
1251.0 2848.
Heliocentric velocity Z redshift
2848.0000000000 0.0094999054
Index JD of some kind Observer phase Rest phase
1 1236.8900000000 -14.1100000000 -13.9772177532 ! garavini2005 1999feb27.39 3703.02--10306.29822
2 1237.8900000000 -13.1100000000 -12.9866282597 ! phillips2006 1999feb28.39
3 1242.9500000000 -8.0500000000 -7.9742454226 ! garavini2005 1999mar05.45 3826.903--8859.097045
4 0.0000000000****************************** ! Note garavini2005 give 1240.95, but
5 0.0000000000****************************** ! all evidence points to 1242.95.
6 1248.8900000000 -2.1100000000 -2.0901438313 ! phillips2006 1999mar11.39
7 1251.3900000000 0.3900000000 0.3863299025 ! garavini2005 1999mar13.89 3330.649--7493.630117
8 0.0000000000****************************** ! I truncated to 7341.110562.
9 0.0000000000****************************** ! The header gives this as mar14.
10 0.0000000000****************************** ! Which is right?
11 0.0000000000****************************** ! My guess is the header is a round-off.
12 1253.8400000000 2.8400000000 2.8132741615 ! garavini2005
13 1253.7200000000 2.7200000000 2.6944034223 ! garavini2005
14 1258.8800000000 7.8800000000 7.8058452087 ! phillips2006 1999mar21.38 3599.--9269.
15 1259.8800000000 8.8800000000 8.7964347022 ! garavini2005 1999mar22.38 3227.072--9253.61232
16 1262.8900000000 11.8900000000 11.7781090776 ! garavini2005
17 1267.8700000000 16.8700000000 16.7112447552 ! garavini2005
18 1275.9800000000 24.9800000000 24.7449255474 ! garavini2005 1999apr07.48 A missing spectrum
19 0.0000000000****************************** ! from SUSPECT.
20 1279.8500000000 28.8500000000 28.5785068872 ! garavini2005
21 1282.9000000000 31.9000000000 31.5998048424 ! garavini2005
22 1284.8400000000 33.8400000000 33.5215484597 ! garavini2005
23 1290.8400000000 39.8400000000 39.4650854207 ! garavini2005
24 1291.8500000000 40.8500000000 40.4655808091 ! phillips2006 1999apr23.35
25 1293.7900000000 42.7900000000 42.3873244265 ! garavini2005
&specnamelist
aname='sn1999ac Ia 1999_03_'
ebv=.05 !
epoch= ! This parameter needs to updated for the particular spectrum.
idifmake=0
iformat=-1 ! garavini2005 already deredshift; phillips2006 not deredshifted.
ismooth=0 ! Smoothing?
itick=2
itickln=4
t_rise=19.4d0 ! conley2006: just an average rise time.
v_helio=2848.
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:
