SN 1991bg: A type Ia supernova with a difference

Bruno Leibundgut; Robert P. Kirshner; Mark M. Phillips; Lisa A. Wells; N. B. Suntzeff; Mario Hamuy; R. A. Schommer; A. R. Walker; L. Gonzalez; P. Ugarte; R. E. Williams; G. Williger; Mercedes Gomez; Ronald Marzke; Brian P. Schmidt; Barbara Whitney; Nelson Caldwell; J. Peters; F. H. Chaffee; Craig B. Foltz; D. Rehner; L. Siciliano; T. G. Barnes; K. P. Cheng; P. M.N. Hintzen; Y. C. Kim; Jose Maza; J. Wm Parker; A. C. Porter; P. C. Schmidtke; George Sonneborn

doi:10.1086/116427

SN 1991bg: A type Ia supernova with a difference

Bruno Leibundgut^*, Robert P. Kirshner, Mark M. Phillips, Lisa A. Wells, N. B. Suntzeff, Mario Hamuy, R. A. Schommer, A. R. Walker, L. Gonzalez, P. Ugarte, R. E. Williams, G. Williger, Mercedes Gomez, Ronald Marzke, Brian P. Schmidt, Barbara Whitney, Nelson Caldwell, J. Peters, F. H. Chaffee, Craig B. FoltzD. Rehner, L. Siciliano, T. G. Barnes, K. P. Cheng, P. M.N. Hintzen, Y. C. Kim, Jose Maza, J. Wm Parker, A. C. Porter, P. C. Schmidtke, George Sonneborn

^*Corresponding author for this work

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

275 Citations (Scopus)

Abstract

We present 13 spectra and 31 photometric observations covering the first 150 days of SN 1991bg in NGC 4374 (M 84). Although SN 1991bg was a type Ia supernova displaying the characteristic Si II absorption at 6150 Å near maximum and the Fe emission lines at late phases, it varied from the well-defined norm for SNe Ia in several important respects. The peculiarities include faster declines in the B and V light curves after maximum, a distinct color evolution, a very red B - V color near maximum, relatively faint peak luminosity, a distinct spectral evolution, and a short peak phase. The narrow peak of the luminosity and the rapid declines of the light curves suggest a smaller mass in the.

Original language	English
Pages (from-to)	301-313
Number of pages	13
Journal	Astronomical Journal
Volume	105
Issue number	1
DOIs	https://doi.org/10.1086/116427
Publication status	Published - Jan 1993
Externally published	Yes

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Leibundgut, B., Kirshner, R. P., Phillips, M. M., Wells, L. A., Suntzeff, N. B., Hamuy, M., Schommer, R. A., Walker, A. R., Gonzalez, L., Ugarte, P., Williams, R. E., Williger, G., Gomez, M., Marzke, R., Schmidt, B. P., Whitney, B., Caldwell, N., Peters, J., Chaffee, F. H., ... Sonneborn, G. (1993). SN 1991bg: A type Ia supernova with a difference. Astronomical Journal, 105(1), 301-313. https://doi.org/10.1086/116427

@article{997d0462bd6c4dfe8b3eff5f11b6201c,

title = "SN 1991bg: A type Ia supernova with a difference",

abstract = "We present 13 spectra and 31 photometric observations covering the first 150 days of SN 1991bg in NGC 4374 (M 84). Although SN 1991bg was a type Ia supernova displaying the characteristic Si II absorption at 6150 {\AA} near maximum and the Fe emission lines at late phases, it varied from the well-defined norm for SNe Ia in several important respects. The peculiarities include faster declines in the B and V light curves after maximum, a distinct color evolution, a very red B - V color near maximum, relatively faint peak luminosity, a distinct spectral evolution, and a short peak phase. The narrow peak of the luminosity and the rapid declines of the light curves suggest a smaller mass in the.",

author = "Bruno Leibundgut and Kirshner, {Robert P.} and Phillips, {Mark M.} and Wells, {Lisa A.} and Suntzeff, {N. B.} and Mario Hamuy and Schommer, {R. A.} and Walker, {A. R.} and L. Gonzalez and P. Ugarte and Williams, {R. E.} and G. Williger and Mercedes Gomez and Ronald Marzke and Schmidt, {Brian P.} and Barbara Whitney and Nelson Caldwell and J. Peters and Chaffee, {F. H.} and Foltz, {Craig B.} and D. Rehner and L. Siciliano and Barnes, {T. G.} and Cheng, {K. P.} and Hintzen, {P. M.N.} and Kim, {Y. C.} and Jose Maza and Parker, {J. Wm} and Porter, {A. C.} and Schmidtke, {P. C.} and George Sonneborn",

year = "1993",

month = jan,

doi = "10.1086/116427",

language = "English",

volume = "105",

pages = "301--313",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "1",

}

Leibundgut, B, Kirshner, RP, Phillips, MM, Wells, LA, Suntzeff, NB, Hamuy, M, Schommer, RA, Walker, AR, Gonzalez, L, Ugarte, P, Williams, RE, Williger, G, Gomez, M, Marzke, R, Schmidt, BP, Whitney, B, Caldwell, N, Peters, J, Chaffee, FH, Foltz, CB, Rehner, D, Siciliano, L, Barnes, TG, Cheng, KP, Hintzen, PMN, Kim, YC, Maza, J, Parker, JW, Porter, AC, Schmidtke, PC & Sonneborn, G 1993, 'SN 1991bg: A type Ia supernova with a difference', Astronomical Journal, vol. 105, no. 1, pp. 301-313. https://doi.org/10.1086/116427

TY - JOUR

T1 - SN 1991bg

T2 - A type Ia supernova with a difference

AU - Leibundgut, Bruno

AU - Kirshner, Robert P.

AU - Phillips, Mark M.

AU - Wells, Lisa A.

AU - Suntzeff, N. B.

AU - Hamuy, Mario

AU - Schommer, R. A.

AU - Walker, A. R.

AU - Gonzalez, L.

AU - Ugarte, P.

AU - Williams, R. E.

AU - Williger, G.

AU - Gomez, Mercedes

AU - Marzke, Ronald

AU - Schmidt, Brian P.

AU - Whitney, Barbara

AU - Caldwell, Nelson

AU - Peters, J.

AU - Chaffee, F. H.

AU - Foltz, Craig B.

AU - Rehner, D.

AU - Siciliano, L.

AU - Barnes, T. G.

AU - Cheng, K. P.

AU - Hintzen, P. M.N.

AU - Kim, Y. C.

AU - Maza, Jose

AU - Parker, J. Wm

AU - Porter, A. C.

AU - Schmidtke, P. C.

AU - Sonneborn, George

PY - 1993/1

Y1 - 1993/1

N2 - We present 13 spectra and 31 photometric observations covering the first 150 days of SN 1991bg in NGC 4374 (M 84). Although SN 1991bg was a type Ia supernova displaying the characteristic Si II absorption at 6150 Å near maximum and the Fe emission lines at late phases, it varied from the well-defined norm for SNe Ia in several important respects. The peculiarities include faster declines in the B and V light curves after maximum, a distinct color evolution, a very red B - V color near maximum, relatively faint peak luminosity, a distinct spectral evolution, and a short peak phase. The narrow peak of the luminosity and the rapid declines of the light curves suggest a smaller mass in the.

AB - We present 13 spectra and 31 photometric observations covering the first 150 days of SN 1991bg in NGC 4374 (M 84). Although SN 1991bg was a type Ia supernova displaying the characteristic Si II absorption at 6150 Å near maximum and the Fe emission lines at late phases, it varied from the well-defined norm for SNe Ia in several important respects. The peculiarities include faster declines in the B and V light curves after maximum, a distinct color evolution, a very red B - V color near maximum, relatively faint peak luminosity, a distinct spectral evolution, and a short peak phase. The narrow peak of the luminosity and the rapid declines of the light curves suggest a smaller mass in the.

UR - http://www.scopus.com/inward/record.url?scp=4243253788&partnerID=8YFLogxK

U2 - 10.1086/116427

DO - 10.1086/116427

M3 - Article

SN - 0004-6256

VL - 105

SP - 301

EP - 313

JO - Astronomical Journal

JF - Astronomical Journal

IS - 1

ER -

SN 1991bg: A type Ia supernova with a difference

Abstract

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