Optical light curve of the type Ia supernova 1998bu in M96 and the supernova calibration of the hubble constant

Nicholas B. Suntzeff; M. M. Phillips; R. Covarrubias; M. Navarrete; J. J. Pérez; A. Guerra; M. T. Acevedo; Laurance R. Doyle; Thomas Harrison; Stephen Kane; Knox S. Long; José Maza; Scott Miller; Andrés E. Piatti; Juan J. Clariá; Andrea V. Ahumada; Barton Pritzl; P. Frank Winkler

doi:10.1086/300771

Optical light curve of the type Ia supernova 1998bu in M96 and the supernova calibration of the hubble constant

Nicholas B. Suntzeff, M. M. Phillips, R. Covarrubias, M. Navarrete, J. J. Pérez, A. Guerra, M. T. Acevedo, Laurance R. Doyle, Thomas Harrison, Stephen Kane, Knox S. Long, José Maza, Scott Miller, Andrés E. Piatti, Juan J. Clariá, Andrea V. Ahumada, Barton Pritzl, P. Frank Winkler

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

Abstract

We present the UBV(RI)_KC light curves of the Type Ia supernova SN 1998bu, which appeared in the nearby galaxy M96 (NGC 3368). M96 is a spiral galaxy in the Leo I group that has a Cepheid-based distance. Our photometry allows us to calculate the absolute magnitude and reddening of this supernova. These data, when combined with measurements of the four other well-observed supernovae with Cepheid-based distances, allow us to calculate the Hubble constant with respect to the Hubble flow defined by the distant Calán/Tololo Type Ia sample. We find a Hubble constant of 63.9 ± 2.2(internal) ± 3.5(external) km s^-1 Mpc^-1, consistent with most previous estimates based on Type Ia supernovae. We note that the two well-observed Type Ia supernovae in Fornax, if placed at the Cepheid distance to the possible Fornax spiral NGC 1365, are apparently too faint with respect to the Calán/Tololo sample calibrated with the five Type Ia supernovae with Cepheid distances to the host galaxies.

Original language	English (US)
Pages (from-to)	1175-1184
Number of pages	10
Journal	Astronomical Journal
Volume	117
Issue number	3
DOIs	https://doi.org/10.1086/300771
State	Published - Mar 1999
Externally published	Yes

Keywords

Distance scale
Galaxies: Individual (NGC 3368)
Supernovae: General
Supernovae: Individual (SN 1998bu)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1086/300771

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Suntzeff, N. B., Phillips, M. M., Covarrubias, R., Navarrete, M., Pérez, J. J., Guerra, A., Acevedo, M. T., Doyle, L. R., Harrison, T., Kane, S., Long, K. S., Maza, J., Miller, S., Piatti, A. E., Clariá, J. J., Ahumada, A. V., Pritzl, B., & Winkler, P. F. (1999). Optical light curve of the type Ia supernova 1998bu in M96 and the supernova calibration of the hubble constant. Astronomical Journal, 117(3), 1175-1184. https://doi.org/10.1086/300771

Suntzeff, NB, Phillips, MM, Covarrubias, R, Navarrete, M, Pérez, JJ, Guerra, A, Acevedo, MT, Doyle, LR, Harrison, T, Kane, S, Long, KS, Maza, J, Miller, S, Piatti, AE, Clariá, JJ, Ahumada, AV, Pritzl, B & Winkler, PF 1999, 'Optical light curve of the type Ia supernova 1998bu in M96 and the supernova calibration of the hubble constant', Astronomical Journal, vol. 117, no. 3, pp. 1175-1184. https://doi.org/10.1086/300771

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title = "Optical light curve of the type Ia supernova 1998bu in M96 and the supernova calibration of the hubble constant",

abstract = "We present the UBV(RI)KC light curves of the Type Ia supernova SN 1998bu, which appeared in the nearby galaxy M96 (NGC 3368). M96 is a spiral galaxy in the Leo I group that has a Cepheid-based distance. Our photometry allows us to calculate the absolute magnitude and reddening of this supernova. These data, when combined with measurements of the four other well-observed supernovae with Cepheid-based distances, allow us to calculate the Hubble constant with respect to the Hubble flow defined by the distant Cal{\'a}n/Tololo Type Ia sample. We find a Hubble constant of 63.9 ± 2.2(internal) ± 3.5(external) km s-1 Mpc-1, consistent with most previous estimates based on Type Ia supernovae. We note that the two well-observed Type Ia supernovae in Fornax, if placed at the Cepheid distance to the possible Fornax spiral NGC 1365, are apparently too faint with respect to the Cal{\'a}n/Tololo sample calibrated with the five Type Ia supernovae with Cepheid distances to the host galaxies.",

keywords = "Distance scale, Galaxies: Individual (NGC 3368), Supernovae: General, Supernovae: Individual (SN 1998bu)",

author = "Suntzeff, {Nicholas B.} and Phillips, {M. M.} and R. Covarrubias and M. Navarrete and P{\'e}rez, {J. J.} and A. Guerra and Acevedo, {M. T.} and Doyle, {Laurance R.} and Thomas Harrison and Stephen Kane and Long, {Knox S.} and Jos{\'e} Maza and Scott Miller and Piatti, {Andr{\'e}s E.} and Clari{\'a}, {Juan J.} and Ahumada, {Andrea V.} and Barton Pritzl and Winkler, {P. Frank}",

year = "1999",

month = mar,

doi = "10.1086/300771",

language = "English (US)",

volume = "117",

pages = "1175--1184",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "3",

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T1 - Optical light curve of the type Ia supernova 1998bu in M96 and the supernova calibration of the hubble constant

AU - Suntzeff, Nicholas B.

AU - Phillips, M. M.

AU - Covarrubias, R.

AU - Navarrete, M.

AU - Pérez, J. J.

AU - Guerra, A.

AU - Acevedo, M. T.

AU - Doyle, Laurance R.

AU - Harrison, Thomas

AU - Kane, Stephen

AU - Long, Knox S.

AU - Maza, José

AU - Miller, Scott

AU - Piatti, Andrés E.

AU - Clariá, Juan J.

AU - Ahumada, Andrea V.

AU - Pritzl, Barton

AU - Winkler, P. Frank

PY - 1999/3

Y1 - 1999/3

N2 - We present the UBV(RI)KC light curves of the Type Ia supernova SN 1998bu, which appeared in the nearby galaxy M96 (NGC 3368). M96 is a spiral galaxy in the Leo I group that has a Cepheid-based distance. Our photometry allows us to calculate the absolute magnitude and reddening of this supernova. These data, when combined with measurements of the four other well-observed supernovae with Cepheid-based distances, allow us to calculate the Hubble constant with respect to the Hubble flow defined by the distant Calán/Tololo Type Ia sample. We find a Hubble constant of 63.9 ± 2.2(internal) ± 3.5(external) km s-1 Mpc-1, consistent with most previous estimates based on Type Ia supernovae. We note that the two well-observed Type Ia supernovae in Fornax, if placed at the Cepheid distance to the possible Fornax spiral NGC 1365, are apparently too faint with respect to the Calán/Tololo sample calibrated with the five Type Ia supernovae with Cepheid distances to the host galaxies.

AB - We present the UBV(RI)KC light curves of the Type Ia supernova SN 1998bu, which appeared in the nearby galaxy M96 (NGC 3368). M96 is a spiral galaxy in the Leo I group that has a Cepheid-based distance. Our photometry allows us to calculate the absolute magnitude and reddening of this supernova. These data, when combined with measurements of the four other well-observed supernovae with Cepheid-based distances, allow us to calculate the Hubble constant with respect to the Hubble flow defined by the distant Calán/Tololo Type Ia sample. We find a Hubble constant of 63.9 ± 2.2(internal) ± 3.5(external) km s-1 Mpc-1, consistent with most previous estimates based on Type Ia supernovae. We note that the two well-observed Type Ia supernovae in Fornax, if placed at the Cepheid distance to the possible Fornax spiral NGC 1365, are apparently too faint with respect to the Calán/Tololo sample calibrated with the five Type Ia supernovae with Cepheid distances to the host galaxies.

KW - Distance scale

KW - Galaxies: Individual (NGC 3368)

KW - Supernovae: General

KW - Supernovae: Individual (SN 1998bu)

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U2 - 10.1086/300771

DO - 10.1086/300771

M3 - Article

AN - SCOPUS:0000967681

SN - 0004-6256

VL - 117

SP - 1175

EP - 1184

JO - Astronomical Journal

JF - Astronomical Journal

IS - 3

ER -

Optical light curve of the type Ia supernova 1998bu in M96 and the supernova calibration of the hubble constant

Abstract

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