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Type Ia supernova Hubble diagram with near-infrared and optical observations

Type Ia supernova Hubble diagram with near-infrared and optical observations
Type Ia supernova Hubble diagram with near-infrared and optical observations

Context. Type Ia Supernovae (SNe Ia) have been used as standardizable candles in the optical wavelengths to measure distances with an accuracy of ∼7% out to redshift z ∼ 1.5. There is evidence that in the near-infrared (NIR) wavelengths SNe Ia are even better standard candles, however, NIR observations are much more time-consuming. Aims. We aim to test whether the NIR peak magnitudes could be accurately estimated with only a single observation obtained close to maximum light, provided that the time of B band maximum, the B − V color at maximum and the optical stretch parameter are known. Methods. We present multi-epoch UBVRI and single-epoch J and H photometric observations of 16 SNe Ia in the redshift range z = 0.037 − 0.183, doubling the leverage of the current SN Ia NIR Hubble diagram and the number of SNe beyond redshift 0.04. This sample was analyzed together with 102 NIR and 458 optical light curves (LCs) of normal SNe Ia from the literature. Results. The analysis of 45 NIR LCs with well-sampled first maximum shows that a single template accurately describes the LCs if its time axis is stretched with the optical stretch parameter. This allows us to estimate the peak NIR magnitudes of SNe with only few observations obtained within ten days from B-band maximum. The NIR Hubble residuals show weak correlation with ∆M15 and the color excess E(B − V), and for the first time we report a potential dependence on the Jmax − Hmax color. With these corrections, the intrinsic NIR luminosity scatter of SNe Ia is estimated to be ∼0.10 mag, which is smaller than what can be derived for a similarly heterogeneous sample at optical wavelengths. Analysis of both NIR and optical data shows that the dust extinction in the host galaxies corresponds to a low RV 1.8–1.9. Conclusions. We conclude that SNe Ia are at least as good standard candles in the NIR as in the optical and are potentially less affected by systematic uncertainties. We extended the NIR SN Ia Hubble diagram to its nonlinear part at z ∼ 0.2 and confirmed that it is feasible to accomplish this result with very modest sampling of the NIR LCs, if complemented by well-sampled optical LCs. With future facilities it will be possible to extend the NIR Hubble diagram beyond redshift z 1, and our results suggest that the most efficient way to achieve this would be to obtain a single observation close to the NIR maximum.

Methods: observational, Supernovae: general, Techniques: photometric
0004-6361
Stanishev, V.
a86531f0-799a-4593-a754-c1e1651fe734
Goobar, A.
ac815421-dedb-4275-83cb-12f9073d7c68
Amanullah, R.
3c7a52e1-0e02-417a-8f07-63fd3c94af24
Bassett, B.
704146fa-6b5b-4e3d-986d-b70e16326d15
Fantaye, Y. T.
6ccade9e-0a09-4813-9384-de24a684e0be
Garnavich, P.
a46bc21c-8239-423a-b02c-9cfd267b1a09
Hlozek, R.
fbd2322e-9713-40b6-a357-27fac2d5b342
Nordin, J.
f887a7d5-d13f-4988-8b3a-605f61984541
Okouma, P. M.
cd731b63-0bdc-49e3-a1cc-c07c008b87bc
Stman, L.
594cd495-b456-4763-b844-b043e03dc2b0
Sako, M.
c55b2dbb-04bd-4759-8c37-4d640f09c286
Scalzo, R.
3f79fbf7-f10b-4294-8b63-e355a928b536
Smith, M.
8bdc74e1-a37b-434d-ae75-82763109bf7a
Stanishev, V.
a86531f0-799a-4593-a754-c1e1651fe734
Goobar, A.
ac815421-dedb-4275-83cb-12f9073d7c68
Amanullah, R.
3c7a52e1-0e02-417a-8f07-63fd3c94af24
Bassett, B.
704146fa-6b5b-4e3d-986d-b70e16326d15
Fantaye, Y. T.
6ccade9e-0a09-4813-9384-de24a684e0be
Garnavich, P.
a46bc21c-8239-423a-b02c-9cfd267b1a09
Hlozek, R.
fbd2322e-9713-40b6-a357-27fac2d5b342
Nordin, J.
f887a7d5-d13f-4988-8b3a-605f61984541
Okouma, P. M.
cd731b63-0bdc-49e3-a1cc-c07c008b87bc
Stman, L.
594cd495-b456-4763-b844-b043e03dc2b0
Sako, M.
c55b2dbb-04bd-4759-8c37-4d640f09c286
Scalzo, R.
3f79fbf7-f10b-4294-8b63-e355a928b536
Smith, M.
8bdc74e1-a37b-434d-ae75-82763109bf7a

Stanishev, V., Goobar, A., Amanullah, R., Bassett, B., Fantaye, Y. T., Garnavich, P., Hlozek, R., Nordin, J., Okouma, P. M., Stman, L., Sako, M., Scalzo, R. and Smith, M. (2018) Type Ia supernova Hubble diagram with near-infrared and optical observations. Astronomy & Astrophysics, 615. (doi:10.1051/0004-6361/201732357).

Record type: Article

Abstract

Context. Type Ia Supernovae (SNe Ia) have been used as standardizable candles in the optical wavelengths to measure distances with an accuracy of ∼7% out to redshift z ∼ 1.5. There is evidence that in the near-infrared (NIR) wavelengths SNe Ia are even better standard candles, however, NIR observations are much more time-consuming. Aims. We aim to test whether the NIR peak magnitudes could be accurately estimated with only a single observation obtained close to maximum light, provided that the time of B band maximum, the B − V color at maximum and the optical stretch parameter are known. Methods. We present multi-epoch UBVRI and single-epoch J and H photometric observations of 16 SNe Ia in the redshift range z = 0.037 − 0.183, doubling the leverage of the current SN Ia NIR Hubble diagram and the number of SNe beyond redshift 0.04. This sample was analyzed together with 102 NIR and 458 optical light curves (LCs) of normal SNe Ia from the literature. Results. The analysis of 45 NIR LCs with well-sampled first maximum shows that a single template accurately describes the LCs if its time axis is stretched with the optical stretch parameter. This allows us to estimate the peak NIR magnitudes of SNe with only few observations obtained within ten days from B-band maximum. The NIR Hubble residuals show weak correlation with ∆M15 and the color excess E(B − V), and for the first time we report a potential dependence on the Jmax − Hmax color. With these corrections, the intrinsic NIR luminosity scatter of SNe Ia is estimated to be ∼0.10 mag, which is smaller than what can be derived for a similarly heterogeneous sample at optical wavelengths. Analysis of both NIR and optical data shows that the dust extinction in the host galaxies corresponds to a low RV 1.8–1.9. Conclusions. We conclude that SNe Ia are at least as good standard candles in the NIR as in the optical and are potentially less affected by systematic uncertainties. We extended the NIR SN Ia Hubble diagram to its nonlinear part at z ∼ 0.2 and confirmed that it is feasible to accomplish this result with very modest sampling of the NIR LCs, if complemented by well-sampled optical LCs. With future facilities it will be possible to extend the NIR Hubble diagram beyond redshift z 1, and our results suggest that the most efficient way to achieve this would be to obtain a single observation close to the NIR maximum.

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More information

Accepted/In Press date: 2 March 2018
e-pub ahead of print date: 11 July 2018
Keywords: Methods: observational, Supernovae: general, Techniques: photometric

Identifiers

Local EPrints ID: 425341
URI: https://eprints.soton.ac.uk/id/eprint/425341
ISSN: 0004-6361
PURE UUID: f553fc22-a9e9-478f-b35d-d4fde3527dca
ORCID for M. Smith: ORCID iD orcid.org/0000-0002-3321-1432

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Date deposited: 12 Oct 2018 16:30
Last modified: 20 Jul 2019 00:36

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Contributors

Author: V. Stanishev
Author: A. Goobar
Author: R. Amanullah
Author: B. Bassett
Author: Y. T. Fantaye
Author: P. Garnavich
Author: R. Hlozek
Author: J. Nordin
Author: P. M. Okouma
Author: L. Stman
Author: M. Sako
Author: R. Scalzo
Author: M. Smith ORCID iD

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