The type Ic SN 1990B in NGC 4568

Alejandro Clocchiatti, Nicholas B. Suntzeff, Mark M. Phillips, Alexei V. Filippenko, Massimo Turatto, Stefano Benetti, Enrico Cappellaro, Roberto Avilés, Ricardo Covarrubias, Kathleen D Eastwood, Mark Dickinson, Christian Gouiffes, Puragra Guhathakurta, Mario Hamuy, Steve R. Heathcote, Bruno Leibundgut, Thomas Matheson, Mauricio Navarrete, M. Perez, Andrew Phillips & 8 others Antonello Piemonte, María T. Ruiz, Joseph C. Shields, Chris Smith, Hyron Spinrad, Conrad R. Sturch, J. Anthony Tyson, Lisa Wells

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

We present a study of the Type Ic supernova (SN) 1990B that includes most of the observations obtained from around the world. The combined data set comprises 84 BV(RI)c photometric points spanning approximately 360 days after maximum light and 14 spectra from 5 up to ∼150 days after maximum light. In contrast to other Type Ic SNe, SN 1990B did not display a weak but distinct He I λ5876 line indicating that its He content was smaller or that the He layers were rather effectively shielded from the radioactive matter in the ejecta. The behavior of the Na I D line, however, suggests that He I λ5876 was blended with it. SN 1990B appeared on a sharply varying background that complicates the usual techniques of digital photometry. In order to do unbiased photometry, we modeled and subtracted the background of each image with the SN using images of NGC 4568 taken ∼2500 days after the explosion when SN 1990B had faded beyond detection. We compare the performance of standard point-spread function fitting photometry of the SN in the images with and without the background of the parent galaxy and find the results to differ systematically at late times. The photometry done on the images with the background light of NGC 4568 subtracted shows the light curves of SN 1990B to be of the slow Type Ic variety, with a slope steeper than that of the Type Ib SN 1983N or the Type II transition (Type IIb) SN 1993J but slower than that of the Type Ic SN 1994I. We estimate the reddening by foreground matter in the Galaxy and NGC 4568 and compute BV(RI)c light curves spanning ∼110 days after maximum light.

Original languageEnglish (US)
Pages (from-to)886-896
Number of pages11
JournalAstrophysical Journal
Volume553
Issue number2 PART 1
StatePublished - Jun 1 2001

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supernovae
photometry
light curve
ejecta
explosion
galaxies
D lines
point spread functions
explosions
slopes
estimates

Keywords

  • Supernovae: general
  • Supernovae: individual (SN 1990B)

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Clocchiatti, A., Suntzeff, N. B., Phillips, M. M., Filippenko, A. V., Turatto, M., Benetti, S., ... Wells, L. (2001). The type Ic SN 1990B in NGC 4568. Astrophysical Journal, 553(2 PART 1), 886-896.

The type Ic SN 1990B in NGC 4568. / Clocchiatti, Alejandro; Suntzeff, Nicholas B.; Phillips, Mark M.; Filippenko, Alexei V.; Turatto, Massimo; Benetti, Stefano; Cappellaro, Enrico; Avilés, Roberto; Covarrubias, Ricardo; Eastwood, Kathleen D; Dickinson, Mark; Gouiffes, Christian; Guhathakurta, Puragra; Hamuy, Mario; Heathcote, Steve R.; Leibundgut, Bruno; Matheson, Thomas; Navarrete, Mauricio; Perez, M.; Phillips, Andrew; Piemonte, Antonello; Ruiz, María T.; Shields, Joseph C.; Smith, Chris; Spinrad, Hyron; Sturch, Conrad R.; Tyson, J. Anthony; Wells, Lisa.

In: Astrophysical Journal, Vol. 553, No. 2 PART 1, 01.06.2001, p. 886-896.

Research output: Contribution to journalArticle

Clocchiatti, A, Suntzeff, NB, Phillips, MM, Filippenko, AV, Turatto, M, Benetti, S, Cappellaro, E, Avilés, R, Covarrubias, R, Eastwood, KD, Dickinson, M, Gouiffes, C, Guhathakurta, P, Hamuy, M, Heathcote, SR, Leibundgut, B, Matheson, T, Navarrete, M, Perez, M, Phillips, A, Piemonte, A, Ruiz, MT, Shields, JC, Smith, C, Spinrad, H, Sturch, CR, Tyson, JA & Wells, L 2001, 'The type Ic SN 1990B in NGC 4568', Astrophysical Journal, vol. 553, no. 2 PART 1, pp. 886-896.
Clocchiatti A, Suntzeff NB, Phillips MM, Filippenko AV, Turatto M, Benetti S et al. The type Ic SN 1990B in NGC 4568. Astrophysical Journal. 2001 Jun 1;553(2 PART 1):886-896.
Clocchiatti, Alejandro ; Suntzeff, Nicholas B. ; Phillips, Mark M. ; Filippenko, Alexei V. ; Turatto, Massimo ; Benetti, Stefano ; Cappellaro, Enrico ; Avilés, Roberto ; Covarrubias, Ricardo ; Eastwood, Kathleen D ; Dickinson, Mark ; Gouiffes, Christian ; Guhathakurta, Puragra ; Hamuy, Mario ; Heathcote, Steve R. ; Leibundgut, Bruno ; Matheson, Thomas ; Navarrete, Mauricio ; Perez, M. ; Phillips, Andrew ; Piemonte, Antonello ; Ruiz, María T. ; Shields, Joseph C. ; Smith, Chris ; Spinrad, Hyron ; Sturch, Conrad R. ; Tyson, J. Anthony ; Wells, Lisa. / The type Ic SN 1990B in NGC 4568. In: Astrophysical Journal. 2001 ; Vol. 553, No. 2 PART 1. pp. 886-896.
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abstract = "We present a study of the Type Ic supernova (SN) 1990B that includes most of the observations obtained from around the world. The combined data set comprises 84 BV(RI)c photometric points spanning approximately 360 days after maximum light and 14 spectra from 5 up to ∼150 days after maximum light. In contrast to other Type Ic SNe, SN 1990B did not display a weak but distinct He I λ5876 line indicating that its He content was smaller or that the He layers were rather effectively shielded from the radioactive matter in the ejecta. The behavior of the Na I D line, however, suggests that He I λ5876 was blended with it. SN 1990B appeared on a sharply varying background that complicates the usual techniques of digital photometry. In order to do unbiased photometry, we modeled and subtracted the background of each image with the SN using images of NGC 4568 taken ∼2500 days after the explosion when SN 1990B had faded beyond detection. We compare the performance of standard point-spread function fitting photometry of the SN in the images with and without the background of the parent galaxy and find the results to differ systematically at late times. The photometry done on the images with the background light of NGC 4568 subtracted shows the light curves of SN 1990B to be of the slow Type Ic variety, with a slope steeper than that of the Type Ib SN 1983N or the Type II transition (Type IIb) SN 1993J but slower than that of the Type Ic SN 1994I. We estimate the reddening by foreground matter in the Galaxy and NGC 4568 and compute BV(RI)c light curves spanning ∼110 days after maximum light.",
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AU - Suntzeff, Nicholas B.

AU - Phillips, Mark M.

AU - Filippenko, Alexei V.

AU - Turatto, Massimo

AU - Benetti, Stefano

AU - Cappellaro, Enrico

AU - Avilés, Roberto

AU - Covarrubias, Ricardo

AU - Eastwood, Kathleen D

AU - Dickinson, Mark

AU - Gouiffes, Christian

AU - Guhathakurta, Puragra

AU - Hamuy, Mario

AU - Heathcote, Steve R.

AU - Leibundgut, Bruno

AU - Matheson, Thomas

AU - Navarrete, Mauricio

AU - Perez, M.

AU - Phillips, Andrew

AU - Piemonte, Antonello

AU - Ruiz, María T.

AU - Shields, Joseph C.

AU - Smith, Chris

AU - Spinrad, Hyron

AU - Sturch, Conrad R.

AU - Tyson, J. Anthony

AU - Wells, Lisa

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N2 - We present a study of the Type Ic supernova (SN) 1990B that includes most of the observations obtained from around the world. The combined data set comprises 84 BV(RI)c photometric points spanning approximately 360 days after maximum light and 14 spectra from 5 up to ∼150 days after maximum light. In contrast to other Type Ic SNe, SN 1990B did not display a weak but distinct He I λ5876 line indicating that its He content was smaller or that the He layers were rather effectively shielded from the radioactive matter in the ejecta. The behavior of the Na I D line, however, suggests that He I λ5876 was blended with it. SN 1990B appeared on a sharply varying background that complicates the usual techniques of digital photometry. In order to do unbiased photometry, we modeled and subtracted the background of each image with the SN using images of NGC 4568 taken ∼2500 days after the explosion when SN 1990B had faded beyond detection. We compare the performance of standard point-spread function fitting photometry of the SN in the images with and without the background of the parent galaxy and find the results to differ systematically at late times. The photometry done on the images with the background light of NGC 4568 subtracted shows the light curves of SN 1990B to be of the slow Type Ic variety, with a slope steeper than that of the Type Ib SN 1983N or the Type II transition (Type IIb) SN 1993J but slower than that of the Type Ic SN 1994I. We estimate the reddening by foreground matter in the Galaxy and NGC 4568 and compute BV(RI)c light curves spanning ∼110 days after maximum light.

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