J/ApJ/848/56 Relationships between SNe Ia and the host galaxies (Uddin+, 2017)
The influence of host galaxies in Type Ia supernova cosmology.
Uddin S.A., Mould J., Lidman C., Ruhlmann-Kleider V., Zhang B.R.
<Astrophys. J., 848, 56-56 (2017)>
=2017ApJ...848...56U 2017ApJ...848...56U (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, optical; Supernovae; Redshifts; Surveys
Keywords: dark energy; galaxies: general; supernovae: general
Abstract:
We use a sample of 1338 spectroscopically confirmed and
photometrically classified Type Ia supernovae (SNe Ia) sourced from
Carnegie Supernova Project, Center for Astrophysics Supernova Survey,
Sloan Digital Sky Survey-II, and SuperNova Legacy Survey SN samples to
examine the relationships between SNe Ia and the galaxies that host
them. Our results provide confirmation with improved statistical
significance that SNe Ia, after standardization, are on average more
luminous in massive hosts (significance >5σ), and decline more
rapidly in massive hosts (significance >9σ) and in hosts with
low specific star formation rates (significance >8σ). We study
the variation of these relationships with redshift and detect no
evolution. We split SNe Ia into pairs of subsets that are based on the
properties of the hosts and fit cosmological models to each subset.
Including both systematic and statistical uncertainties, we do not
find any significant shift in the best-fit cosmological parameters
between the subsets. Among different SN Ia subsets, we find that SNe
Ia in hosts with high specific star formation rates have the least
intrinsic scatter (σint=0.08±0.01) in luminosity after
standardization.
Description:
The SN Ia samples in this paper come from the following surveys:
SuperNova Legacy Survey (SNLS): The SNLS was conducted between 2002
and 2008 with the 3.6m Canada-France-Hawaii Telescope located atop the
summit of Mauna Kea on the island of Hawai'i. The instrument MegaCam
was used to image four one-square degree fields located in areas of
low galactic extinction in the gM, rM, iM, and zM bands.
For spectroscopic confirmation, several 8-10m telescopes were used,
including the Gemini North and South telescopes, the Very Large
Telescope, and the Keck telescopes. SN spectra have been published in
several papers.
SDSS-II SN Survey: The SDSS-II SN survey used the 2.5m SDSS telescope
located at the Apache Point Observatory in New Mexico. In this
program, a part of the sky called stripe 82 was repeatedly scanned in
the ugriz bands for SNe during the northern falls of 2005, 2006, and
2007.
Visual inspection and model fitting of the light-curves were performed
to select SN Ia candidates, which were then spectroscopically
confirmed using a number of telescopes.
Carnegie Supernova Project (CSP): CSP was conducted between 2004 and
2009 (Hamuy+ 2006PASP..118....2H 2006PASP..118....2H) at the Las Campanas Observatory in
Chile using several telescopes, most notably the 1m Swope and 2.5m du
Pont telescopes. CSP has obtained light-curves in the u'gir'i'BVYJHKs
bands, which range from the near-UV to the near-infrared (near-IR).
Centre for Astrophysics (CfA) Supernova Survey: Astronomers at the
Harvard-Smithsonian CfA have been collecting photometric and
spectroscopic data of local SNe Ia since 1993. The CfA SN program uses
the 1.2m telescope at the Fred Lawrence Whipple observatory using the
UBVIr'i' bands.
See section 2 for further details.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 118 1338 The Spectral Adaptive Light-curve Template
(Guy+ 2007A&A...466...11G 2007A&A...466...11G) version 2.4
(SALT2.4) light-curve parameters
table8.dat 74 1335 *Z-PEG host galaxy properties
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Note on table8.dat: With ugriz photometry, we derive host galaxy stellar mass
and sSFR using the spectral energy distribution (SED) fitting code Z-PEG
(Le Borgne & Rocca-Volmerange 2002A&A...386..446L 2002A&A...386..446L).
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
J/MNRAS/457/3470 : SN Ia host-galaxy/cosmological parameters (Campbell+, 2016)
J/ApJ/821/115 : SDSS-II SN Survey: host-galaxy spectral data (Wolf+, 2016)
J/MNRAS/448/732 : SN Ia environment within host galaxies (Anderson+, 2015)
J/A+A/568/A22 : Joint analysis of the SDSS-II and SNLS SNe Ia (Betoule+, 2014)
J/MNRAS/438/1391 : Host galaxies of Type Ia SN from PTF (Pan+, 2014)
J/ApJ/763/88 : SDSS-II supernovae Ia cosmological analysis (Campbell+, 2013)
J/ApJS/200/12 : CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)
J/A+A/544/A81 : Supernovae and their hosts in the SDSS DR8 (Hakobyan+, 2012)
J/A+A/538/A120 : A unified supernova catalogue (Lennarz+, 2012)
J/AJ/142/156 : The CSP (DR2): photometry of SNe Ia (Stritzinger+, 2011)
J/ApJ/740/92 : SN.Ia host galaxies properties (Gupta+, 2011)
J/ApJ/738/162 : SN Ia candidates from the SDSS-II SN Survey (Sako+, 2011)
J/MNRAS/410/1262 : Supernova Legacy Survey. Type Ia supernovae (Walker+, 2011)
J/ApJS/192/1 : Light-curve parameters from the SNLS (Conley+, 2011)
J/A+A/523/A7 : Light curves of type Ia supernovae in SNLS (Guy+, 2010)
J/ApJ/722/566 : Host galaxies of SNe Ia in SDSS-II SN survey (Lampeitl+, 2010)
J/ApJ/713/1026 : SN Ia rate at redshift ≲0.3 from SDSS-II (Dilday+, 2010)
J/MNRAS/406/782 : Type Ia supernovae luminosities (Sullivan+, 2010)
J/AJ/139/519 : Carnegie supernova project. SNe Ia (Contreras+, 2010)
J/ApJ/707/1449 : Local hosts of SNe Ia (Neill+, 2009)
J/A+A/507/85 : ESO/VLT 3rd year type Ia supernova data set (Balland+, 2009)
J/ApJ/700/331 : Light curves of type Ia supernovae (CfA3) (Hicken+, 2009)
J/AJ/135/1766 : Sloan Digital Sky Survey-II supernova survey (Zheng+, 2008)
J/AJ/135/348 : SDSS-II SNe survey: search and follow-up (Sako+, 2008)
J/A+A/477/717 : Spectroscopy of Type Ia supernovae (Bronder+, 2008)
J/ApJ/659/122 : Improved distances to type Ia supernovae (Jha+, 2007)
J/AJ/112/2408 : Light Curves of 29 SNe (Hamuy+ 1996)
Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name SN Ia name
20- 27 F8.6 --- zhel [0.01/1.5] SN Ia heliocentric redshift (zhel)
29- 36 F8.6 --- zcmb [0.01/1.5] SN Ia CMB reference redshift (zcmb)
38- 44 F7.4 mag Bmag [14.5/25.6] SNIa peak B band apparent
magnitude (mb)
46- 51 F6.4 mag e_Bmag [0.01/0.7] Error in mB (emb)
53- 59 F7.4 --- x1 [-4.2/5] SNIa stretch or
light-curve width (x1)
61- 66 F6.4 --- e_x1 [0.01/8] Error in x1 (ex1)
68- 74 F7.4 --- c [-0.4/0.9] SN Ia color (c)
76- 81 F6.4 --- e_c [0.01/0.6] Error in c (ec)
83- 89 F7.4 --- cov(mbx1) [-0.2/1.8] Covariance between Bmag and x1
(in units of 10-4) (cov(mbx1))
91- 97 F7.4 --- cov(mc) [-0.4/0.05] Covariance between Bmag and Col
(in units of 10-4) (cov(mc))
99-105 F7.4 --- cov(x1c) [-0.6/1.4] Covariance between x1 and Col
(in units of 10-4) (cov(x1c))
107-116 A10 --- Source Source of SN Ia (source) (1)
118 A1 --- Type Type of SN Ia (s: spectroscopically confirmed;
p: photometrically classified)
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Note (1): Source as follows:
SDSS_spec = SDSS-II SN spectroscopically confirmed SN Ia
(Zheng+, 2008, J/AJ/135/1766 ; 311 occurrences);
SNLS_spec = SuperNova Legacy Survey spectroscopically confirmed SN Ia
(C. Balland et al. 2017, in preparation and Betoule+,
2014, J/A+A/568/A22 ; 196 occurrences);
CfA3 = Centre for Astrophysics (CfA) Supernova Survey 3
spectroscopically confirmed SN Ia (Hicken+ 2009, J/ApJ/700/331 ;
32 occurrences);
CSP = Carnegie Supernova Project spectroscopically confirmed SN Ia
(Stritzinger+ 2011, J/AJ/142/156 ; 27 occurrences) and
CfA4 = Centre for Astrophysics (CfA) Supernova Survey 4
spectroscopically confirmed SN Ia
(Hicken+, 2012, J/ApJS/200/12 ; 17 occurrences)
SDSS_photo = SDSS-II SN survey photometrically classified SN Ia
(Sako+, 2018PASP..130f4002S 2018PASP..130f4002S ; 661 occurrences);
SNLS_photo = SuperNova Legacy Survey photometrically classified SN Ia
(Bazin+ 2011A&A...534A..43B 2011A&A...534A..43B ; 94 occurrences);
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 18 A18 --- Name Name of SN Ia
20- 25 F6.3 [Msun] logM* [8/12.1] Host galaxy stellar mass (mass)
27- 33 F7.3 [yr-1] logsSFR [-11.9/-8.6]?=-99 Host galaxy sSFR (sSRR) (1)
35- 43 F9.6 --- NPD [0/11.9] Normalized projected distance between
SNIa and host galaxy centers (NPD)
45- 52 F8.6 --- a/b Ratio between semimajor and semiminor axes
of host galaxy (Axial_Ratio)
54- 63 F10.6 deg RAdeg Right ascension of host galaxy (J2000) (RA)
65- 74 F10.6 deg DEdeg Declination of host galaxy (J2000) (Dec)
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Note (1): Passive galaxies have values of -99.
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 11-Jun-2018