J/A+A/611/A25 Updated Type II supernova Hubble diagram (Gall+, 2018)
An updated Type II supernova Hubble diagram.
Gall E.E.E., Kotak R., Leibundgut B., Taubenberger S., Hillebrandt W.,
Kromer M., Burgett W.S., Chambers K., Flewelling H., Huber M.E., Kaiser N.,
Kudritzki R.P., Magnier E.A., Metcalfe N., Smith K., Tonry J.L.,
Wainscoat R.J., Waters C.
<Astron. Astrophys. 611, A25 (2018)>
=2018A&A...611A..25G 2018A&A...611A..25G (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Photometry
Keywords: supernovae: general - distance scale
Abstract:
We present photometry and spectroscopy of nine Type II-P/L supernovae
(SNe) with redshifts in the 0.045~<z~<0.335 range, with a view to
re-examining their utility as distance indicators. Specifically, we
apply the expanding photosphere method (EPM) and the standardized
candle method (SCM) to each target, and find that both methods yield
distances that are in reasonable agreement with each other. The
current record-holder for the highest-redshift spectroscopically
confirmed SN II-P is PS1-13bni (z=0.335+0.009-0.012), and
illustrates the promise of Type II SNe as cosmological tools. We
updated existing EPM and SCM Hubble diagrams by adding our sample to
those previously published. Within the context of Type II SN distance
measuring techniques, we investigated two related questions. First, we
explored the possibility of utilising spectral lines other than the
traditionally used FeII λ5169 to infer the photospheric
velocity of SN ejecta. Using local well-observed objects, we derive an
epoch-dependent relation between the strong Balmer lines Hα,
Hβ and FeII λ5169 velocities that is applicable 30 to
40 days post-explosion. Motivated in part by the continuum of key
observables such as rise time and decline rates exhibited from II-P to
II-L SNe, we assessed the possibility of using Hubble-flow Type II-L
SNe as distance indicators. These yield similar distances as the Type
II-P SNe. Although these initial results are encouraging, a
significantly larger sample of SNe II-L would be required to draw
definitive conclusions.
Description:
Photometric parameters for 9 Type IIP and IIL supernovae: SN 2013ca,
PS1-13wr, PS1-14vk, PS1-12bku, PS1-13abg, PS1-13baf, PS1-13bmf,
PS1-13atm and PS1-13bni.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 120 11 Sample of intermediate redshift Type II-P/L SNe
sn2013ca.dat 50 6 SN 2013ca photometric observations
ps112bku.dat 50 60 PS1-12bku photometric observations
ps113abg.dat 50 34 PS1-13abg photometric observations
ps113atm.dat 50 13 PS1-13atm photometric observations
ps113baf.dat 50 76 PS1-13baf photometric observations
ps113bmf.dat 50 36 PS1-13bmf photometric observations
ps113bni.dat 50 74 PS1-13bni photometric observations
ps113wr.dat 50 113 PS1-13wr photometric observations
ps114vk.dat 50 52 PS1-14vk photometric observations
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- SN SN name
11- 15 A5 --- Type Type
17- 18 I2 h RAh Right ascension (J2000)
20- 21 I2 min RAm Right ascension (J2000)
23- 27 F5.2 s RAs Right ascension (J2000)
29 A1 --- DE- Declination sign (J2000)
30- 31 I2 deg DEd Declination (J2000)
33- 34 I2 arcmin DEm Declination (J2000)
36- 39 F4.1 arcsec DEs Declination (J2000)
41- 64 A24 --- Host Host galaxy name
66- 70 F5.3 mag E(B-V)g Galactic E(B-V)
72 A1 --- l_E(B-V)h Limit flag on E(B-V)h
73- 77 F5.3 mag E(B-V)h ?=- Host E(B-V)
79- 83 F5.3 mag e_E(B-V)h ? rms uncertainty on E(B-V)h
85- 89 F5.3 --- z Redshift
90 A1 --- --- [+]
91- 95 F5.3 --- E_z Error on z (upper value)
96 A1 --- --- [-]
97-101 F5.3 --- e_z Error on z (lower value)
103-107 A5 --- r_z Redhsidt reference(s) (1)
109-120 A12 --- FileName Name of the file with light curve data
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Note (1): References as follows:
a = Gall et al. (2016A&A...592A.129G 2016A&A...592A.129G)
b = this study
c = NASA/IPAC Extragalactic Database
d = Gall et al. (2015A&A...582A...3G 2015A&A...582A...3G)
e = Sloan Digital Sky Survey
f = Lilly et al. (2007, Cat. J/ApJS/172/70)
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Byte-by-byte Description of file: ps1*.dat sn2013ca.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Date Date
12- 19 F8.2 d MJD Modified Julian Day
21- 27 F7.2 d Epoch Rest frame epoch (1)
29- 33 F5.2 mag mag Magnitude (2)
37- 40 F4.2 mag e_mag rms uncertainty on mag
42- 46 A5 --- Filt Filter
48- 50 A3 --- Tel Telescope (3)
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Note (1): Epochs are in rest frame with respect to the first detection.
SN2013ca : z=0.045 assumed, date of first detection on 56392.0 (MJD)
in gp (g'), rp (r') and ip (i')
PS1-13wr : z=0.076 assumed, date of first detection on 56349.60 (MJD)
in y_PS1, g_PS1, r_PS1, i_PS1, z_PS1
PS1-14vk : z=0.080 assumed, date of first detection on 56740.51 (MJD)
in gp (g'), rp (r') and ip (i')
PS1-12bku : z=0.088 assumed, date of discovery on 56161.36 (MJD)
in gp (g'), rp (r') and ip (i'),
g_PS1, r_PS1, i_PS1, z_PS1, y_PS1
PS1-13abg : z=0.123 assumed, date of first detection on 56380.37 (MJD)
in y_PS1, g_PS1, r_PS1, i_PS1, z_PS1
PS1-13baf : z=0.144 assumed, date of first detection on 56409.49 (MJD)
in y_PS1, g_PS1, r_PS1, i_PS1, z_PS1
PS1-13bmf : z=0.163 assumed, date of first detection on 56420.36 (MJD)
in y_PS1, g_PS1, r_PS1, i_PS1, z_PS1
PS1-13atm : z=0.220 assumed, date of first detection on 56396.37 (MJD)
in y_PS1, g_PS1, r_PS1, i_PS1, z_PS1
PS1-13bni : z=0.335 assumed, date of discovery on 56409.49 (MJD)
in y_PS1, g_PS1, r_PS1, i_PS1, z_PS1
Note (2): The tabulated magnitudes are given "as observed", i.e. neither
corrected for dust extinction nor K-corrected.
Note (3): Telescopes as follows:
PS1 = Panoramic Survey Telescope & Rapid Response System 1.
LT = Liverpool Telescope.
NOT = Nordic Optical Telescope
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Acknowledgements:
Elisabeth Gall, egall01(at)qub.ac.uk
(End) Elisabeth Gall [QUB, UK], Patricia Vannier [CDS] 26-Oct-2017