J/MNRAS/498/2703 Second amendment compilation of type Ia SNe (Boruah+, 2020)
Cosmic flows in the nearby Universe: new peculiar velocities from SNe and
cosmological constraints.
Boruah S.S., Hudson M.J., Lavaux G.
<Mon. Not. R. Astron. Soc., 498, 2703-2718 (2020)>
=2020MNRAS.498.2703B 2020MNRAS.498.2703B (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Galaxies ; Redshifts ; Infrared
Keywords: Galaxy: kinematics and dynamics - galaxies: statistics -
large-scale structure of Universe - cosmology: observations
Abstract:
The peculiar velocity field offers a unique way to probe dark matter
density field on large scales at low redshifts. In this work, we have
compiled a new sample of 465 peculiar velocities from low redshift
(z<0.067) Type Ia supernovae. We compare the reconstructed velocity
field derived from the 2M++ galaxy redshift compilation to the
supernovae, the SFI++ and the 2MTF Tully-Fisher distance catalogues.
We used a forward method to jointly infer the distances and the
velocities of distance indicators by comparing the observations to the
reconstruction. Comparison of the reconstructed peculiar velocity
fields to observations allows us to infer the cosmological parameter
combination fσ8, and the bulk flow velocity arising from
outside the survey volume. The residual bulk flow arising from outside
the 2M++ volume is inferred to be 171+11-11km/s in the direction
l=301°±4° and b=0°±3°. We obtain
fσ8=0.400±0.017, equivalent to
S8~σ8(Ωm/0.3)0.55=0.776±0.033, which corresponds
to an approximately 4 per cent statistical uncertainty on the value of
fσ8. Our inferred value is consistent with other low redshift
results in the literature.
Description:
Turnbull et al. (2012MNRAS.420..447T 2012MNRAS.420..447T) previously presented the 'first
amendment' (A1) compilation of Type Ia supernovae in the local
universe. This was based on the addition of 26 SNe from the first data
release (DR1) of the Carnegie Supernovae Project (CSP; Folatelli et
al. 2010AJ....139..120F 2010AJ....139..120F, Cat. J/AJ/139/120) to the low-z set of
'Constitution' supernovae (Hicken et al. 2009ApJ...700.1097H 2009ApJ...700.1097H, Cat.
J/ApJ/700/1097). In this work, we add to the first amendment catalogue
additional supernovae from the third data release (DR3) of CSP
(Krisciunas et al. 2017AJ....154..211K 2017AJ....154..211K, Cat. J/AJ/154/211), the Lick
Observatory Supernova Search (LOSS; Li et al. 2000AIPC..522..103L 2000AIPC..522..103L) and
the Foundation Supernova Survey data release 1 (DR1) (Foley et al.
2018MNRAS.475..193F 2018MNRAS.475..193F, Cat. J/MNRAS/475/193; Jones et al.
2019ApJ...881...19J 2019ApJ...881...19J), resulting in the 'second amendment' (A2)
compilation of SNe peculiar velocities.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 275 465 Second amendment compilation
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See also:
J/AJ/139/120 : Low-redshift Type-Ia supernovae (Folatelli+, 2010)
J/ApJ/700/1097 : Light curve parameters of SN Ia (Hicken+, 2009)
J/AJ/154/211 : The CSP (DR3): photometry of low-z SNe Ia (Krisciunas+, 2017)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 29 A29 --- Name Supernova name
31- 51 F21.19 --- zCMB Redshift in the CMB frame corrected to the mean
group redshift if appropriate
53- 70 F18.15 mag mu Distance modulus
72- 90 F19.17 mag e_mu Error on mu
92- 111 F20.16 deg RAdeg Right ascension (J2000)
113- 134 F22.18 deg DEdeg Declination (J2000)
136- 153 F18.15 --- mB ? mB Tripp amplitude parameter (1)
155- 174 F20.18 --- e_mB ? Error on mB
176- 195 F20.17 --- x1 ? x1 Tripp stretch parameter (1)
197- 216 F20.18 --- e_x1 ? Error on x1
218- 238 F21.18 --- c ? c Tripp colour parameter (1)
240- 259 F20.18 --- e_c ? Error on c
261- 270 A10 --- Sample Supernova sample (A1/LOSS/CSP-DR3 or Foundation)
272- 275 I4 --- GID Group identifier from the 2M++ catalogue
(Lavaux & Hudson 2011MNRAS.416.2840L 2011MNRAS.416.2840L,
Cat. J/MNRAS/416/2840) (2)
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Note (1): The Foundation DR1 and the LOSS sample provides the supernovae
light-curve stretch parameter, x1, colour parameter c, and the
amplitude, mB after fitting the light curves using the SALT2
(Guy et al. 2007A&A...466...11G 2007A&A...466...11G) fitter. The distance modulus for the
SALT2 model is given by the Tripp formula (Tripp 1998A&A...331..815T 1998A&A...331..815T),
µ=mB-M+αx1-Bc.
Note (2): If there is no identified group in the 2M++ group catalogue, it is
denoted with '0'
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History:
From electronic version of the journal
(End) Ana Fiallos [CDS] 04-Aug-2023