SN 1997br Ia in ESO576-040
OBJECT: SN 1997br Ia in ESO576-040 (SBc galaxy) which in Leda is
ESO576-040 (Leda).
Leda is ambiguous about whether the Galaxy name is
ESO576-040 or ESO576-G40.
DISCOVERY: 1997apr10.6 UT by Li et al.
MAXIMUM: 1997apr20.6 (JD 2450559.1 +/- 1.5) in B (li1999, p. 2712, but note the value in the table probably is the right
one as opposed to the one in the foot note to the other table.
See the US Navy Observatory Julian Date Converter.
This day of the year 110.
SUPERNOVA of the YEAR: M = 70.
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 (2006jan01)).
COMMENT: A shallow silicon (SS) SN Ia.
REFERENCES:
branch2006 Synthetic spectra for
SNe Ia at maximum light.
CfA List of Supernovae
where SN 1997br is noted.
CfA Supernova Archive
For SN 1997br, there are 0 spectra and UBVRI photometry.
\citet{conley2006} General value
of 19.4 days for Ia rise time in B.
li1999 Specifically on SN 1997br with 18 spectra.
SUSPECT Index.
SUSPECT Index: SN 1997br Ia.
There are 11 SN 1997br spectra. They are all from li1999. But li1999 had 18 spectra. Where are the other ones?
CORRECTIONS: Heliocentric velocity 2086 +/- 3 km/s (2007jul11) from
ESO576-040 (Leda).
Galactic foreground 0.49/4=.1225 reddening from
ESO576-040 (Leda).
This is derived from
Schlegel et al. (1998)
OBSERVATIONS: From
1) SUSPECT: 11 of 18 li1999 spectra and no others.
2) David Branch /home/branch/synow/97br: these seem to be li1999 spectra, but he has
days 10, 12, and 14 relative to Bmax which are not on SUSPECT. But he seems not
to haves days -4 (one of them), 21, 47, and 81.
3) Eddie Baron: none.
SPECTRUM LOG:
JD times for the SN 1997br spectra of li1999.
Bmax from li1999 1997apr20.6 (JD 2450559.1 +/- 1.5).
The li1999 spectra from SUSPECT all seem deredshifted.
JD Bmax Heliocentric velocity (Leda, 2007jul01)
0559.1 2086.
Heliocentric velocity Z redshift
2086.0000000000 0.0069581470
Index JD of some kind Observer phase Rest phase
1 550.2000000000 -8.9000000000 -8.8385004146 ! li1999 1997apr11.7 3712.32--8404.665
2 551.2000000000 -7.9000000000 -7.8454104804 ! li1999 1997apr12.7 3716.21--8403.725
3 552.2000000000 -6.9000000000 -6.8523205462 ! li1999 1997apr13.7 3718.71--8413.47
4 553.2000000000 -5.9000000000 -5.8592306119 ! li1999
5 554.8000000000 -4.3000000000 -4.2702867172 ! li1999
6 555.2000000000 -3.9000000000 -3.8730507435 ! li1999
7 567.1000000000 8.0000000000 7.9447194738 ! li1999 1997apr28.6 3170.83--9406.03
8 569.2000000000 10.1000000000 10.0302083357 ! li1999
9 571.1000000000 12.0000000000 11.9170792107 ! li1999
10 573.2000000000 14.1000000000 14.0025680726 ! li1999
11 577.1000000000 18.0000000000 17.8756188161 ! li1999 1997may08.6 3304.74--9979.45
12 579.8000000000 20.7000000000 20.5569616385 ! li1999 1997may11.3
13 0.0000000000-559.1000000000-555.2365822267 ! Uncertain date because typo in li1999.
14 583.1000000000 24.0000000000 23.8341584215 ! li1999 1997may14.6
15 597.1000000000 38.0000000000 37.7374175007 ! li1999
16 605.8000000000 46.7000000000 46.3772999284 ! li1999
17 610.1000000000 51.0000000000 50.6475866456 ! li1999
18 626.1000000000 67.0000000000 66.5370255933 ! li1999
19 639.7000000000 80.6000000000 80.0430486988 ! li1999
&specnamelist
aname='sn1997br Ia 1997_04_'
ebv=.1225 !
epoch= ! This parameter needs to updated for the particular spectrum.
idifmake=0
iformat=1
ismooth=0
itick=2
itickln=4
t_rise=19.4d0 ! conley2006: just an average rise time.
v_helio=2086.
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:
