J/MNRAS/448/1345 YJK for Type Ia supernovae (Dhawan+, 2015)
Near-infrared light curves of Type Ia supernovae:
studying properties of the second maximum.
Dhawan S., Leibundgut B., Spyromilio J., Maguire K.
<Mon. Not. R. Astron. Soc., 448, 1345-1359 (2015)>
=2015MNRAS.448.1345D 2015MNRAS.448.1345D (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Photometry, infrared
Keywords: supernovae: general - distance scale
Abstract:
Type Ia supernovae (SNe Ia) have been proposed to be much better
distance indicators at near-infrared (NIR) compared to optical
wavelengths - the effect of dust extinction is expected to be lower
and it has been shown that SNe Ia behave more like `standard candles'
at NIR wavelengths. To better understand the physical processes behind
this increased uniformity, we have studied the Y, J and H-filter
light curves of 91 SNe Ia from the literature. We show that the phases
and luminosities of the first maximum in the NIR light curves are
extremely uniform for our sample. The phase of the second maximum, the
late-phase NIR luminosity and the optical light-curve shape are found
to be strongly correlated, in particular more luminous SNe Ia reach
the second maximum in the NIR filters at a later phase compared to
fainter objects. We also find a strong correlation between the phase
of the second maximum and the epoch at which the SN enters the Lira
law phase in its optical colour curve (epochs ∼15 to 30d after
B-band maximum). The decline rate after the second maximum is very
uniform in all NIR filters. We suggest that these observational
parameters are linked to the nickel and iron mass in the explosion,
providing evidence that the amount of nickel synthesized in the
explosion is the dominating factor shaping the optical and NIR
appearance of SNe Ia.
Description:
We investigate a large sample of nearby objects with well-sampled
optical and NIR data (Table 1). The main data source of NIR SN Ia
photometry is the Carnegie SN Project (CSP; Contreras et al., 2010,
Cat. J/AJ/139/519; Burns et al. 2011AJ....141...19B 2011AJ....141...19B,
2014ApJ...789...32B 2014ApJ...789...32B; Stritzinger et al., 2011, Cat. J/AJ/142/156;
Phillips, 2012PASA...29..434P 2012PASA...29..434P). The low-redshift CSP provides a sample
of SNe Ia with optical and NIR light curves in a homogeneous and
well-defined photometric system ( in Vega magnitude system) and thus
forms an ideal basis for the evaluation of light-curve properties. CSP
relies primarily on SN discoveries from the Lick Observatory SN Search
(Leaman et al., 2011, Cat. J/MNRAS/412/1419). The CSP has published
light curves on a total of 82 SNe Ia of which 70 have photometry in
YJHK bands.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 54 91 SN sample
tablea1.dat 74 48 Y filter apparent magnitude and phase of the two
maxima and the minimum for the complete sample
tablea2.dat 74 64 J filter apparent magnitude and phase of the two
maxima and the minimum for the complete sample
tablea3.dat 74 52 H filter apparent magnitude and phase of the two
maxima and the minimum for the complete sample
tablea4.dat 34 36 Late time decline rate and luminosity at
+55days in YJH
tablea5.dat 32 42 t2 and epoch at which SN enters Lira law
--------------------------------------------------------------------------------
See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- SN SN name (SNYYYYaa or PTFYYaaa)
11- 16 F6.2 d bPhase Lower value of phase range
18- 19 A2 --- --- [to ]
22- 26 F5.1 d BPhase Upper value of phase range
29- 30 I2 --- Ni ?=- Number of observations in i band
32- 33 I2 --- NY ?=- Number of observations in Y band
35- 36 I2 --- NJ ?=- Number of observations in J band
38- 39 I2 --- NH ?=- Number of observations in H band
41- 42 I2 --- NK ?=- Number of observations in K band
44- 54 A11 --- Ref Reference (1)
--------------------------------------------------------------------------------
Note (1): References as follows:
M00 = Meikle (2000MNRAS.314..782M 2000MNRAS.314..782M)
Ph06 = Phillips et al. (2006AJ....131.2615P 2006AJ....131.2615P)
K04a = Krisciunas et al. (2004AJ....127.1664K 2004AJ....127.1664K)
V03 = Valentini et al. (2003ApJ...595..779V 2003ApJ...595..779V)
K04b = Krisciunas et al. (2004AJ....128.3034K 2004AJ....128.3034K)
K03 = Krisciunas et al. (2003AJ....125..166K 2003AJ....125..166K)
P08 = Pignata et al. (2008MNRAS.388..971P 2008MNRAS.388..971P)
C13 = Cartier et al. (2014ApJ...789...89C 2014ApJ...789...89C)
ER06 = Elias-Rosa et al. (2006, Cat. J/MNRAS/369/1880)
L09 = Leloudas et al. (2009A&A...505..265L 2009A&A...505..265L)
P07 = Pastorello et al. (2007, Cat. J/MNRAS/377/1531)
CSP = Carnegie Supernova Project Contreras et al. (2010, Cat. J/AJ/139/519);
Stritzinger et al. (2011, Cat. J/AJ/142/156)
BN12 = Barone-Nugent et al. (2012MNRAS.425.1007B 2012MNRAS.425.1007B)
M12 = Matheson et al. (2012ApJ...754...19M 2012ApJ...754...19M)
F14 = Foley et al. (2014MNRAS.443.2887F 2014MNRAS.443.2887F)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea1.dat tablea2.dat tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- SN SN name (SNYYYYaa)
10- 14 F5.2 d t1 ?=- Phase of first maximum (1)
16- 19 F4.2 d e_t1 ? rms uncertainty on t1
21- 25 F5.2 mag m1 ?=- Magnitude of first maximum
27- 30 F4.2 mag e_m1 ? rms uncertainty on m1
32- 36 F5.2 d t0 ?=- Phase of first minimum (1)
38- 41 F4.2 d e_t0 ? rms uncertainty on t0
43- 47 F5.2 mag m0 ?=- Magnitude of first minimum
49- 52 F4.2 mag e_m0 ? rms uncertainty on m0
54- 58 F5.2 d t2 ?=- Phase of second maximum (1)
60- 63 F4.2 d e_t2 ? rms uncertainty on t2
65- 69 F5.2 mag m2 ?=- Magnitude of second maximum
71- 74 F4.2 mag e_m2 ? rms uncertainty on m2
--------------------------------------------------------------------------------
Note (1): The phases are given in days relative to the B maximum.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Filt [YJH] Filter
3- 10 A8 --- SN SN name (SNYYYYaa)
12- 16 F5.3 mag/d slope Slope
18- 22 F5.3 mag/d e_slope rms uncertainty on slope
24- 29 F6.2 mag M55 Absolute magnitude at +55days after explosion
31- 34 F4.2 mag e_M55 rms uncertainty on M55
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Filt [YJH] Filter
3- 10 A8 --- SN SN name (SNYYYYaa)
12- 16 F5.2 d t2 Epoch of second maximum
18- 21 F4.2 d e_t2 rms uncertainty on t2
23- 27 F5.2 d tL Epoch at which SN enters Lira law
29- 32 F4.2 d e_tL rms uncertainty on tL
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Sep-2015