J/A+A/680/A56 DES supernova host galaxies fits (Duarte+, 2023)
A sample of dust attenuation laws for Dark Energy Survey supernova host
galaxies.
Duarte J., Gonzalez-Gaitan S., Mourao A., Paulino-Afonso A.,
Guilherme-Garcia P., Aguas J., Galbany L., Kelsey L., Scolnic D.,
Sullivan M., Brout D., Palmese A., Wiseman P., Aguena M., Alves O.,
Bacon D., Bertin E., Bocquet S., Brooks D., Burke D.L., Carnero Rosell A.,
Carrasco Kind M., Carretero J., Costanzi M., Pereira M.E.S., Davis T.M.,
De Vicente J., Desai S., Diehl H.T., Doel P., Everett S., Ferrero I.,
Friedel D., Frieman J., Garcia-Bellido J., Gatti M., Gerdes D.W., Gruen D.,
Gruendl R.A., Gutierrez G., Hinton S.R., Hollowood D.L., Honscheid K.,
James D.J., Kuehn K., Kuropatkin N., Melchior P., Miquel R.,
Paz-Chinchon F., Pieres A., Plazas Malagon A.A., Raveri M.,
Rodriguez-Monroy M., Sanchez E., Scarpine V., Sevilla-Noarbe I., Smith M.,
Suchyta E., Tarle G., To C., Weaverdyck N.
<Astron. Astrophys., 680, A56 (2023)>
=2023A&A...680A..56D 2023A&A...680A..56D (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Models ; Abundances ; Stars, ages ; Optical
Keywords: dust - extinction - supernovae: general - distance scale -
galaxies: general
Abstract:
Type Ia supernovae (SNe Ia) are useful distance indicators in
cosmology, provided their luminosity is standardized by applying
empirical corrections based on light-curve properties. One factor
behind these corrections is dust extinction, which is accounted for in
the color-luminosity relation of the standardization. This relation is
usually assumed to be universal, which can potentially introduce
systematics into the standardization. The 'mass step' observed for
SN Ia Hubble residuals has been suggested as one such systematic.
We seek to obtain a more complete view of dust attenuation properties
for a sample of 162 SN Ia host galaxies and to probe their link to the
mass step.
We inferred attenuation laws toward hosts from both global and local
(4 kpc) Dark Energy Survey photometry and composite stellar population
model fits.
We recovered a relation between the optical depth and the attenuation
slope, best explained by differing star-to-dust geometry for different
galaxy orientations, which is significantly different from the optical
depth and extinction slope relation observed directly for SNe. We
obtain a large variation of attenuation slopes and confirm these
change with host properties, such as the stellar mass and age, meaning
a universal SN Ia correction should ideally not be assumed. Analyzing
the cosmological standardization, we find evidence for a mass step and
a two-dimensional 'dust step', both more pronounced for red SNe.
Although comparable, the two steps are not found to be completely
analogous.
We conclude that host galaxy dust data cannot fully account for the
mass step, using either an alternative SN standardization with
extinction proxied by host attenuation or a dust-step approach.
Description:
In this work we look at data collected as part of the first three-year
cosmological sample of the SN survey (DES3YR) (Brout et al.,
2019ApJ...874..150B 2019ApJ...874..150B, Cat. J/ApJ/874/150), consisting of 206
spectroscopically confirmed SNe, as well as their respective host
galaxies (Smith et al., 2020MNRAS.494.4426S 2020MNRAS.494.4426S, Cat. J/MNRAS/494/4426;
Wiseman et al., 2020MNRAS.495.4040W 2020MNRAS.495.4040W, Cat. J/MNRAS/495/4040).
The table contains the best-fit results for the DES host galaxy fits
with DECam griz global and local photometry for 162 SNe.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablee1.dat 159 162 Best-fit results for the DES host galaxy fits
with DECam griz global and local photometry
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See also:
J/ApJ/874/150 : The first 3yrs of DES-SN (DES-SN3YR) (Brout+, 2019)
J/MNRAS/494/4426 : Effect of host galaxies on SN luminosity (Smith+, 2020)
J/MNRAS/495/4040 : SN host galaxies in Dark Energy Survey I (Wiseman+, 2020)
Byte-by-byte Description of file: tablee1.dat
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Bytes Format Units Label Explanations
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1- 7 I7 --- SNID SN identifier
9- 14 F6.3 [Sun] logZG Global metallicity
15- 22 F8.5 [Sun] E_logZG Global metallicity error (upper value)
24- 29 F6.4 [Sun] e_logZG Global metallicity error (lower value)
31- 35 F5.3 Gyr tageG Global stellar population age
37- 41 F5.3 Gyr E_tageG Global stellar population age error
(upper value)
43- 47 F5.3 Gyr e_tageG Global stellar population age error
(lower value)
49- 53 F5.3 --- tauVG Global time measured up to the stellar
population age tage
55- 59 F5.3 --- E_tauVG Global time measured up to the stellar
population age tage error (upper value)
61- 65 F5.3 --- e_tauVG Global time measured up to the stellar
population age tage error (lower value)
67- 72 F6.3 --- nG Global dust index
74- 78 F5.3 --- E_nG Global dust index error (upper value)
80- 84 F5.3 --- e_nG Global dust index error (lower value)
86- 91 F6.3 [Sun] logZL ? Local metallicity
93- 97 F5.3 [Sun] E_logZL ? Local metallicity error (upper value)
99-103 F5.3 [Sun] e_logZL ? Local metallicity error (lower value)
105-110 F6.3 Gyr tageL ? Local Stellar population age
112-116 F5.3 Gyr E_tageL ? Local Stellar population age error
(upper value)
118-122 F5.3 Gyr e_tageL ? Local Stellar population age error
(lower value)
124-128 F5.3 --- tauVL ? Local time measured up to the stellar
population age tage
130-134 F5.3 --- E_tauVL ? Local time measured up to the stellar
population age tage (upper value)
136-140 F5.3 --- e_tauVL ? Local time measured up to the stellar
population age tage error (lower value)
142-147 F6.3 --- nL ? Local dust index
149-153 F5.3 --- E_nL ? Local dust index (upper value)
155-159 F5.3 --- e_nL ? Local dust index error (lower value)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-Apr-2024