SN 1999by Ia in NGC 2841
OBJECT: SN 1999by Ia in NGC 2841 (Sb galaxy) which in Leda is
NGC 2841 (Leda).
DISCOVERY: 1999apr30 UT by Arbour & Lick Observatory Supernova Search.
MAXIMUM: Bmax 1999may10.3 (7h 12m) (JD 2451308.8) (garnavich2004).
See the US Navy Observatory Julian Date Converter.
This day of the year 130.
SUPERNOVA of the YEAR: M = 77.
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)).
REFERENCES:
CfA List of Supernovae
where SN 1999by is noted.
CfA Supernova Archive
This has 18 SN 1999by spectra in garnavich2004.
conley2006 General value
of 19.4 days for Ia rise time in B.
garnavich2004 Specifically on SN 1999by.
hoeflich2002 Specifically on SN 1999by's
infrared spectra.
howell2001 SN 1999by spectropolarimetry.
paturel2003 (Leda) Leda refererence.
SUSPECT Index.
SUSPECT Index: SN 1999by Ia.
There are 17 SN 1999by spectra from garnavich2004. So one is missing that we could get from the cfa supernova archive.
Also the dates on SUSPECT are a bit suspect. Check the headers and garnavich2004.
I think what happened is that SUSPECT got most of the dates wrong and don't have the real may13 spectrum.
What SUSPECT calls the may13 spectrum is the may14 spectrum.
I think the SUSPECT headers are right for the spectra.
I think all the garnavich spectrum from SUSPECT are not deredshifted.
In the may08 and may14 spectra (the real ones) the telluric line is not blueshifted.
Those are the only ones we can check.
vinko2001 Specifically on SN 1999by.
Spectrosocpy of limited time and wavenlength coverage.
Mostly redundant with garnvich2004.
CORRECTIONS: Heliocentric velocity 636 +/- 2 km/s (2007jun28) from
NGC 2841 (Leda).
Galactic foreground reddening 0.07/4=.0175 from
NGC 2841 (Leda)
This is derived from
Schlegel et al. (1998)
OBSERVATIONS: From
1) SUSPECT: all from garnavich2004, but missing the real may13 I think.
2) Eddie Baron: just two garnavich2004 spectra.
3) David Branch /home/branch/synow/99by: just the garnavich spectra.
4) CfA supernova archive: all the garnavich spectra I think.
SPECTRUM LOG:
JD times for the SN 1999by spectra of garnavich2004.
Bmax 1999may10.3 (7h 12m) (JD 2451308.8) (garnavich2004)
garnavich2004 spectra all seem to be observer-frame.
JD Bmax Heliocentric velocity (Leda, 2007jul01)
1308.8d0 636.d0
Heliocentric velocity Z redshift
636.0000000000 0.0021214676
Index JD of some kind Observer phase Rest phase
1 1304.7200000000 -4.0800000000 -4.0713627357 ! garnavich2004 1999may06.22 3598.5712890625--7538.81106901168
2 1305.6300000000 -3.1700000000 -3.1632891843 ! garnavich2004 1999may07.13
3 1306.6400000000 -2.1600000000 -2.1554273307 ! garnavich2004 1999may08.14 3273.5939941406--9037.34774708752
4 1307.6400000000 -1.1600000000 -1.1575443072 ! garnavich2004 1999may09.14
5 1311.6700000000 2.8700000000 2.8639242773 ! garnavich2004 1999may13.17
6 1312.6400000000 3.8400000000 3.8318708101 ! garnavich2004 1999may14.14
7 1313.6500000000 4.8500000000 4.8397326637 ! garnavich2004 1999may15.15
8 1314.6700000000 5.8700000000 5.8575733477 ! garnavich2004 1999may16.17
9 1315.6600000000 6.8600000000 6.8454775409 ! garnavich2004 1999may17.16 3623.4711914063--7561.14649701121
10 1316.6300000000 7.8300000000 7.8134240736 ! garnavich2004 1999may18.13
11 1317.6300000000 8.8300000000 8.8113070971 ! garnavich2004 1999may19.13
12 1319.6400000000 10.8400000000 10.8170519742 ! garnavich2004 1999may21.14
13 1320.6400000000 11.8400000000 11.8149349977 ! garnavich2004 1999may22.14
14 1334.6600000000 25.8600000000 25.8052549865 ! garnavich2004 1999jun05.16
&specnamelist
aname='sn1999by Ia 1999_05_'
ebv=.0175 !
epoch= ! This parameter needs to updated for the particular spectrum.
idifmake=0
iformat=1 ! The garnavich spectra seem to be observer frame. The 7600 A
! telluric line is unshifted when it can be found.
ismooth=0 ! Smoothing?
itick=2
itickln=4
t_rise=19.4d0 ! conley2006: just an average rise time.
v_helio=636.
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:
