Quantitative comparison between type la supernova spectra at low and high redshifts: A case study

G. Garavini; G. Folatelli; S. Nobili; G. Aldering; R. Amanullah; P. Antilogus; P. Astier; G. Blanc; T. Bronder; M. S. Burns; A. Conley; S. E. Deustua; M. Doi; S. Fabbro; V. Fadeyev; R. Gibbons; G. Goldhaber; A. Goobar; D. E. Groom; I. Hook; D. A. Howell; N. Kashikawa; A. G. Kim; M. Kowalski; N. Kuznetsova; B. C. Lee; C. Lidman; J. Mendez; T. Morokuma; K. Motohara; P. E. Nugent; R. Pain; S. Perlmutter; R. Quimby; J. Raux; N. Regnault; P. Ruiz-Lapuente; G. Sainton; K. Schahmaneche; E. Smith; A. L. Spadafora; V. Stanishev; R. C. Thomas; N. A. Walton; L. Wang; W. M. Wood-Vasey; N. Yasuda

doi:10.1051/0004-6361:20065400

Quantitative comparison between type la supernova spectra at low and high redshifts: A case study

G. Garavini^*, G. Folatelli, S. Nobili, G. Aldering, R. Amanullah, P. Antilogus, P. Astier, G. Blanc, T. Bronder, M. S. Burns, A. Conley, S. E. Deustua, M. Doi, S. Fabbro, V. Fadeyev, R. Gibbons, G. Goldhaber, A. Goobar, D. E. Groom, I. HookD. A. Howell, N. Kashikawa, A. G. Kim, M. Kowalski, N. Kuznetsova, B. C. Lee, C. Lidman, J. Mendez, T. Morokuma, K. Motohara, P. E. Nugent, R. Pain, S. Perlmutter, R. Quimby, J. Raux, N. Regnault, P. Ruiz-Lapuente, G. Sainton, K. Schahmaneche, E. Smith, A. L. Spadafora, V. Stanishev, R. C. Thomas, N. A. Walton, L. Wang, W. M. Wood-Vasey, N. Yasuda

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

We develop a method to measure the strength of the absorption features in type la supernova (SN la) spectra and use it to make a quantitative comparisons between the spectra of type la supernovae at low and high redshifts. In this case study, we apply the method to 12 high-redshift (0.212 ≤ z ≤ 0.912) SNe la observed by the Supernova Cosmology Project. Through measurements of the strengths of these features and of the blueshift of the absorption minimum in Ca II H&K, we show that the spectra of the high-redshift SNe Ia are quantitatively similar to spectra of nearby SNe la (z < 0.15). One supernova in our high redshift sample, SN 2002fd at z = 0.279, is found to have spectral characteristics that are associated with peculiar SN 1991T/SN 1999aa-like supernovae.

Original language	English
Pages (from-to)	411-424
Number of pages	14
Journal	Astronomy and Astrophysics
Volume	470
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361:20065400
Publication status	Published - 1 Jan 2007
Externally published	Yes

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Garavini, G., Folatelli, G., Nobili, S., Aldering, G., Amanullah, R., Antilogus, P., Astier, P., Blanc, G., Bronder, T., Burns, M. S., Conley, A., Deustua, S. E., Doi, M., Fabbro, S., Fadeyev, V., Gibbons, R., Goldhaber, G., Goobar, A., Groom, D. E., ... Yasuda, N. (2007). Quantitative comparison between type la supernova spectra at low and high redshifts: A case study. Astronomy and Astrophysics, 470(2), 411-424. https://doi.org/10.1051/0004-6361:20065400

@article{e582db9ab2674e0d8ba63171c302f67c,

title = "Quantitative comparison between type la supernova spectra at low and high redshifts: A case study",

abstract = "We develop a method to measure the strength of the absorption features in type la supernova (SN la) spectra and use it to make a quantitative comparisons between the spectra of type la supernovae at low and high redshifts. In this case study, we apply the method to 12 high-redshift (0.212 ≤ z ≤ 0.912) SNe la observed by the Supernova Cosmology Project. Through measurements of the strengths of these features and of the blueshift of the absorption minimum in Ca II H&K, we show that the spectra of the high-redshift SNe Ia are quantitatively similar to spectra of nearby SNe la (z < 0.15). One supernova in our high redshift sample, SN 2002fd at z = 0.279, is found to have spectral characteristics that are associated with peculiar SN 1991T/SN 1999aa-like supernovae.",

keywords = "Cosmology: early Universe, Stars: supernovae: general",

author = "G. Garavini and G. Folatelli and S. Nobili and G. Aldering and R. Amanullah and P. Antilogus and P. Astier and G. Blanc and T. Bronder and Burns, {M. S.} and A. Conley and Deustua, {S. E.} and M. Doi and S. Fabbro and V. Fadeyev and R. Gibbons and G. Goldhaber and A. Goobar and Groom, {D. E.} and I. Hook and Howell, {D. A.} and N. Kashikawa and Kim, {A. G.} and M. Kowalski and N. Kuznetsova and Lee, {B. C.} and C. Lidman and J. Mendez and T. Morokuma and K. Motohara and Nugent, {P. E.} and R. Pain and S. Perlmutter and R. Quimby and J. Raux and N. Regnault and P. Ruiz-Lapuente and G. Sainton and K. Schahmaneche and E. Smith and Spadafora, {A. L.} and V. Stanishev and Thomas, {R. C.} and Walton, {N. A.} and L. Wang and Wood-Vasey, {W. M.} and N. Yasuda",

year = "2007",

month = jan,

day = "1",

doi = "10.1051/0004-6361:20065400",

language = "English",

volume = "470",

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journal = "Astronomy and Astrophysics",

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Garavini, G, Folatelli, G, Nobili, S, Aldering, G, Amanullah, R, Antilogus, P, Astier, P, Blanc, G, Bronder, T, Burns, MS, Conley, A, Deustua, SE, Doi, M, Fabbro, S, Fadeyev, V, Gibbons, R, Goldhaber, G, Goobar, A, Groom, DE, Hook, I, Howell, DA, Kashikawa, N, Kim, AG, Kowalski, M, Kuznetsova, N, Lee, BC, Lidman, C, Mendez, J, Morokuma, T, Motohara, K, Nugent, PE, Pain, R, Perlmutter, S, Quimby, R, Raux, J, Regnault, N, Ruiz-Lapuente, P, Sainton, G, Schahmaneche, K, Smith, E, Spadafora, AL, Stanishev, V, Thomas, RC, Walton, NA, Wang, L, Wood-Vasey, WM & Yasuda, N 2007, 'Quantitative comparison between type la supernova spectra at low and high redshifts: A case study', Astronomy and Astrophysics, vol. 470, no. 2, pp. 411-424. https://doi.org/10.1051/0004-6361:20065400

TY - JOUR

T1 - Quantitative comparison between type la supernova spectra at low and high redshifts

T2 - A case study

AU - Garavini, G.

AU - Folatelli, G.

AU - Nobili, S.

AU - Aldering, G.

AU - Amanullah, R.

AU - Antilogus, P.

AU - Astier, P.

AU - Blanc, G.

AU - Bronder, T.

AU - Burns, M. S.

AU - Conley, A.

AU - Deustua, S. E.

AU - Doi, M.

AU - Fabbro, S.

AU - Fadeyev, V.

AU - Gibbons, R.

AU - Goldhaber, G.

AU - Goobar, A.

AU - Groom, D. E.

AU - Hook, I.

AU - Howell, D. A.

AU - Kashikawa, N.

AU - Kim, A. G.

AU - Kowalski, M.

AU - Kuznetsova, N.

AU - Lee, B. C.

AU - Lidman, C.

AU - Mendez, J.

AU - Morokuma, T.

AU - Motohara, K.

AU - Nugent, P. E.

AU - Pain, R.

AU - Perlmutter, S.

AU - Quimby, R.

AU - Raux, J.

AU - Regnault, N.

AU - Ruiz-Lapuente, P.

AU - Sainton, G.

AU - Schahmaneche, K.

AU - Smith, E.

AU - Spadafora, A. L.

AU - Stanishev, V.

AU - Thomas, R. C.

AU - Walton, N. A.

AU - Wang, L.

AU - Wood-Vasey, W. M.

AU - Yasuda, N.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - We develop a method to measure the strength of the absorption features in type la supernova (SN la) spectra and use it to make a quantitative comparisons between the spectra of type la supernovae at low and high redshifts. In this case study, we apply the method to 12 high-redshift (0.212 ≤ z ≤ 0.912) SNe la observed by the Supernova Cosmology Project. Through measurements of the strengths of these features and of the blueshift of the absorption minimum in Ca II H&K, we show that the spectra of the high-redshift SNe Ia are quantitatively similar to spectra of nearby SNe la (z < 0.15). One supernova in our high redshift sample, SN 2002fd at z = 0.279, is found to have spectral characteristics that are associated with peculiar SN 1991T/SN 1999aa-like supernovae.

AB - We develop a method to measure the strength of the absorption features in type la supernova (SN la) spectra and use it to make a quantitative comparisons between the spectra of type la supernovae at low and high redshifts. In this case study, we apply the method to 12 high-redshift (0.212 ≤ z ≤ 0.912) SNe la observed by the Supernova Cosmology Project. Through measurements of the strengths of these features and of the blueshift of the absorption minimum in Ca II H&K, we show that the spectra of the high-redshift SNe Ia are quantitatively similar to spectra of nearby SNe la (z < 0.15). One supernova in our high redshift sample, SN 2002fd at z = 0.279, is found to have spectral characteristics that are associated with peculiar SN 1991T/SN 1999aa-like supernovae.

KW - Cosmology: early Universe

KW - Stars: supernovae: general

UR - http://www.scopus.com/inward/record.url?scp=34547364426&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:20065400

DO - 10.1051/0004-6361:20065400

M3 - Article

AN - SCOPUS:34547364426

SN - 0004-6361

VL - 470

SP - 411

EP - 424

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

Quantitative comparison between type la supernova spectra at low and high redshifts: A case study

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