SN 1986G Ia in NGC 5128 (S0)
OBJECT: SN 1986G Ia in NGC 5128 (S0). In Leda it is
NGC 5128 (Leda).
DISCOVERY: 1986may3.5 UT by Evans (1986)
CfA List of Supernovae.
MAXIMUM: 1986may11.0 +/- 1 (JD 2446561.5) in B (phillips1987).
See the US Navy Observatory Julian Date Converter.
This day of the year 131.
SUPERNOVA of the YEAR: 7.
COMMENTS: A cool (CL) SN Ia, but not an extreme cool.
HEADER: Header Common header information for this supernova.
The common header may be updated relative to information given here
(D. J. Jeffery (2007jan01)).
SPECTRUM LOG:
JD times for the SN 1986g spectra of phillips1987 and cristiani1992.
Bmax JD 2446561.5 +/- 0.5 (phillips1987) (1986may11.0) and cristiani1992 uses the same date.
I believe all the spectra are observer frame.
The cristiani1992 JDs may be rounded off to midnight UT unless they really were taking
data near midnight UT which in Chile would be 8:00pm local time which
near the winter solstice could be quite dark.
The phillips1987g spectra were also taken in Chile and were mostly not far from
UT midnight.
JD Bmax Heliocentric velocity (Leda, 2007jul03)
6561.5 552.
Heliocentric velocity Z redshift
552.0000000000 0.0018412738
Index JD of some kind Observer phase Rest phase
1 6555.6000000000 -5.9000000000 -5.8891564505 ! phillips1987 1986may05.1 4796.--7192. (observed)
2 6556.6000000000 -4.9000000000 -4.8909943402 ! phillips1987 1986may06.1 4796.--7192. (observed)
3 6557.7000000000 -3.8000000000 -3.7930160190 ! cristiani1992 1986may07.2 3403.42431641--7176.42431641 (observed)
4 6558.6500000000 -2.8500000000 -2.8447620142 ! phillips1987 1986may08.15 3600.--7162. (observed)
5 0.0000000000****************************** ! Seems to be a composite spectrum.
6 6559.5000000000 -2.0000000000 -1.9963242205 ! cristiani1992 1986may09.0 3650--7094 (observed)
7 6560.5000000000 -1.0000000000 -0.9981621103 ! cristiani1992 1986may10.0 3650--7094 (observed)
8 6561.5000000000 0.0000000000 0.0000000000 ! cristiani1992 1986may11.0 not used, but it might be a bit better
9 0.0000000000****************************** ! than phillips1987 may11 spectrum.
10 6561.8000000000 0.3000000000 0.2994486331 ! phillips1987 1986may11.3 3555.9998--6637.9996459 (observed)
11 6562.5000000000 1.0000000000 0.9981621103 ! cristiani1992 1986may12.0 3650--7094 (observed)
12 6563.6000000000 2.1000000000 2.0961404315 ! phillips1987 1986may13.1 3698.--5265. (observed)
13 0.0000000000****************************** ! phillips1987 JD seems 1 day too big.
14 6565.8000000000 4.3000000000 4.2920970741 ! phillips1987 1986may15.3 4374.--6330. (observed)
15 0.0000000000****************************** ! phillips1987 JD seems 1 day too big.
16 6567.5000000000 6.0000000000 5.9889726615 ! phillips1987 1986may17.0 5991.--7012. (observed)
17 0.0000000000****************************** ! phillips1987 JD seems 1 day too big.
18 6582.5000000000 21.0000000000 20.9614043153 ! cristiani1992 1986jun01.0 4263.08--6815.08 (observed)
19 6583.5000000000 22.0000000000 21.9595664256 ! cristiani1992 1986jun02.0 3664.2421875--6210.2421875 (observed)
20 6584.5000000000 23.0000000000 22.9577285358 ! cristiani1992 1986jun03.0 3664.2421875--6206.2421875 (observed)
21 6591.0500000000 29.5500000000 29.4956903580 ! phillips1987 1986jun09.55 3400.--5900. (observed)
22 0.0000000000****************************** ! A composite jun08 and jun11 spectrum.
23 6651.5000000000 90.0000000000 89.8345899227 ! cristiani1992 1986aug09.0 3300--8750 (observed)
REFERENCES:
CfA List of Supernovae
where SN 1986G is noted.
CfA Supernova Archive
For SN 1986G, there are 0 spectra and photometry.
conley2006 General value
of 19.4 days for Ia rise time in B.
cristiani1992 Photometry and spectra.
paturel2003 (Leda) Leda refererence.
phillips1987 Photometry and spectra.
SUSPECT Index.
SUSPECT Index: SN 1986G Ia.
There are 39 spectra all from cristiani1992.
CORRECTIONS: Heliocentric velocity 552 +/- 6 km/s (2007jul03) and
NGC 5128 (Leda).
Galactic foreground reddening .50/4=.125
NGC 5128 (Leda).
This is derived from
Schlegel et al. (1998).
OBSERVATIONS: From
1) David Jeffery old catalog: These are from phillips1987.
2) David Branch (/home/branch/synow/86G): Some phillips1987a via David Jeffery and some cristiani1992.
3) Eddie Baron: no 86G spectra in /home/baron/bru2/spec.
4) SUSPECT: The whole set of cristiani1992 and nothing else it seems.
DATE: 1986may (JD ) with 1986may11.0 (JD 2446561.5) for B maximum gives:
day = - 2446561.5 =
For consistency we always use rest phase and for explicitness to more digits than are significant.
observer phase =
rest phase =
&specnamelist
aname='sn1986g Ia 1986_05_'
ebv=.125 ! This is foreground. {phillips1987} suggests total ebv = 0.82 +/- .05, but this is really uncertain.
epoch= ! This parameter needs to updated for the particular spectrum.
idifmake=0
iformat=1 ! This has to be checked for every spectrum.
ismooth=0
itick=2
itickln=4
scale_flux=1.d-24
t_rise=19.4d0 ! conley2006: just an average rise time.
v_helio=552.
ymin2=1.e-15
ymax2=7.e-14
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.
FITS: Fits format information from the observers if there is any.
