Spectroscopic and photometric observations of supernova 1987A - VII. Days 793 to 1770

J. A.R. Caldwell; J. W. Menzies; R. M. Banfield; R. M. Catchpole; P. A. Whitelock; M. W. Feast; T. H.H. Lloyd Evans; K. Sekiguchi; A. Zijlstra; D. A. Allen; S. A. Bell; J. C. Blades; D. A.H. Buckley; P. B. Byrne; P. Callanan; C. Collins; R. J. Cumming; D. O'Donoghue; A. P. Fairall; F. F. Freeman; D. Holmgren; K. Jones; D. W. Latham; S. Maddox; V. S. Meadows; W. P.S. Meikle; J. P.D. Mittaz; A. Monk; A. J. Penny; D. Pollacco; R. D. Slawson; M. G. Soltynski; J. Spyromilio; G. M. Stirpe; R. S. Stobie; C. Willmer

doi:10.1093/mnras/262.2.313

Spectroscopic and photometric observations of supernova 1987A - VII. Days 793 to 1770

J. A.R. Caldwell, J. W. Menzies, R. M. Banfield, R. M. Catchpole, P. A. Whitelock, M. W. Feast, T. H.H. Lloyd Evans, K. Sekiguchi, A. Zijlstra, D. A. Allen, S. A. Bell, J. C. Blades, D. A.H. Buckley, P. B. Byrne, P. Callanan, C. Collins, R. J. Cumming, D. O'Donoghue, A. P. Fairall, F. F. FreemanD. Holmgren, K. Jones, D. W. Latham, S. Maddox, V. S. Meadows, W. P.S. Meikle, J. P.D. Mittaz, A. Monk, A. J. Penny, D. Pollacco, R. D. Slawson, M. G. Soltynski, J. Spyromilio, G. M. Stirpe, R. S. Stobie, C. Willmer

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Abstract

We present spectroscopic and UBV(RI)_c JHKLM photometric observations of SN 1987A in the Large Magellanic Cloud made between days 793 and 1770 after the Kamiokande-II neutrino event, as well as some CCD UBV(RI)_c photometry from day 640 to day 792, which overlaps the interval covered in the preceding paper of this series. During the period from about day 670 to day 1260, the U- to M-bolometric magnitude (hereafter M_UM) of the supernova and its adjoining circumstellar ring hereafter 'the enclosed supernova' dimmed at an increasingly slower rate than during the preceding interval from day 500 to day 670. The rate of dimming steadily increased again between days 1270 and 1770. From day 1000 onwards, the light of the circumstellar ring made an increasingly significant contribution to the light of the enclosed supernova, and by day 1250 had become so dominant that it is probable that useful Earth-based photometry of the bare supernova itself was not feasible thereafter.

Original language	English (US)
Pages (from-to)	313-324
Number of pages	12
Journal	Monthly Notices of the Royal Astronomical Society
Volume	262
Issue number	2
DOIs	https://doi.org/10.1093/mnras/262.2.313
State	Published - 1993
Externally published	Yes

Keywords

Magellanic Clouds
Supernovae: individual: 1987A

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/262.2.313

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Caldwell, J. A. R., Menzies, J. W., Banfield, R. M., Catchpole, R. M., Whitelock, P. A., Feast, M. W., Lloyd Evans, T. H. H., Sekiguchi, K., Zijlstra, A., Allen, D. A., Bell, S. A., Blades, J. C., Buckley, D. A. H., Byrne, P. B., Callanan, P., Collins, C., Cumming, R. J., O'Donoghue, D., Fairall, A. P., ... Willmer, C. (1993). Spectroscopic and photometric observations of supernova 1987A - VII. Days 793 to 1770. Monthly Notices of the Royal Astronomical Society, 262(2), 313-324. https://doi.org/10.1093/mnras/262.2.313

Caldwell, JAR, Menzies, JW, Banfield, RM, Catchpole, RM, Whitelock, PA, Feast, MW, Lloyd Evans, THH, Sekiguchi, K, Zijlstra, A, Allen, DA, Bell, SA, Blades, JC, Buckley, DAH, Byrne, PB, Callanan, P, Collins, C, Cumming, RJ, O'Donoghue, D, Fairall, AP, Freeman, FF, Holmgren, D, Jones, K, Latham, DW, Maddox, S, Meadows, VS, Meikle, WPS, Mittaz, JPD, Monk, A, Penny, AJ, Pollacco, D, Slawson, RD, Soltynski, MG, Spyromilio, J, Stirpe, GM, Stobie, RS & Willmer, C 1993, 'Spectroscopic and photometric observations of supernova 1987A - VII. Days 793 to 1770', Monthly Notices of the Royal Astronomical Society, vol. 262, no. 2, pp. 313-324. https://doi.org/10.1093/mnras/262.2.313

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title = "Spectroscopic and photometric observations of supernova 1987A - VII. Days 793 to 1770",

abstract = "We present spectroscopic and UBV(RI)c JHKLM photometric observations of SN 1987A in the Large Magellanic Cloud made between days 793 and 1770 after the Kamiokande-II neutrino event, as well as some CCD UBV(RI)c photometry from day 640 to day 792, which overlaps the interval covered in the preceding paper of this series. During the period from about day 670 to day 1260, the U- to M-bolometric magnitude (hereafter MUM) of the supernova and its adjoining circumstellar ring hereafter 'the enclosed supernova' dimmed at an increasingly slower rate than during the preceding interval from day 500 to day 670. The rate of dimming steadily increased again between days 1270 and 1770. From day 1000 onwards, the light of the circumstellar ring made an increasingly significant contribution to the light of the enclosed supernova, and by day 1250 had become so dominant that it is probable that useful Earth-based photometry of the bare supernova itself was not feasible thereafter.",

keywords = "Magellanic Clouds, Supernovae: individual: 1987A",

author = "Caldwell, {J. A.R.} and Menzies, {J. W.} and Banfield, {R. M.} and Catchpole, {R. M.} and Whitelock, {P. A.} and Feast, {M. W.} and {Lloyd Evans}, {T. H.H.} and K. Sekiguchi and A. Zijlstra and Allen, {D. A.} and Bell, {S. A.} and Blades, {J. C.} and Buckley, {D. A.H.} and Byrne, {P. B.} and P. Callanan and C. Collins and Cumming, {R. J.} and D. O'Donoghue and Fairall, {A. P.} and Freeman, {F. F.} and D. Holmgren and K. Jones and Latham, {D. W.} and S. Maddox and Meadows, {V. S.} and Meikle, {W. P.S.} and Mittaz, {J. P.D.} and A. Monk and Penny, {A. J.} and D. Pollacco and Slawson, {R. D.} and Soltynski, {M. G.} and J. Spyromilio and Stirpe, {G. M.} and Stobie, {R. S.} and C. Willmer",

note = "Publisher Copyright: {\textcopyright} Royal Astronomical Society.",

year = "1993",

doi = "10.1093/mnras/262.2.313",

language = "English (US)",

volume = "262",

pages = "313--324",

journal = "Monthly Notices of the Royal Astronomical Society",

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publisher = "Oxford University Press",

number = "2",

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TY - JOUR

T1 - Spectroscopic and photometric observations of supernova 1987A - VII. Days 793 to 1770

AU - Caldwell, J. A.R.

AU - Menzies, J. W.

AU - Banfield, R. M.

AU - Catchpole, R. M.

AU - Whitelock, P. A.

AU - Feast, M. W.

AU - Lloyd Evans, T. H.H.

AU - Sekiguchi, K.

AU - Zijlstra, A.

AU - Allen, D. A.

AU - Bell, S. A.

AU - Blades, J. C.

AU - Buckley, D. A.H.

AU - Byrne, P. B.

AU - Callanan, P.

AU - Collins, C.

AU - Cumming, R. J.

AU - O'Donoghue, D.

AU - Fairall, A. P.

AU - Freeman, F. F.

AU - Holmgren, D.

AU - Jones, K.

AU - Latham, D. W.

AU - Maddox, S.

AU - Meadows, V. S.

AU - Meikle, W. P.S.

AU - Mittaz, J. P.D.

AU - Monk, A.

AU - Penny, A. J.

AU - Pollacco, D.

AU - Slawson, R. D.

AU - Soltynski, M. G.

AU - Spyromilio, J.

AU - Stirpe, G. M.

AU - Stobie, R. S.

AU - Willmer, C.

PY - 1993

Y1 - 1993

N2 - We present spectroscopic and UBV(RI)c JHKLM photometric observations of SN 1987A in the Large Magellanic Cloud made between days 793 and 1770 after the Kamiokande-II neutrino event, as well as some CCD UBV(RI)c photometry from day 640 to day 792, which overlaps the interval covered in the preceding paper of this series. During the period from about day 670 to day 1260, the U- to M-bolometric magnitude (hereafter MUM) of the supernova and its adjoining circumstellar ring hereafter 'the enclosed supernova' dimmed at an increasingly slower rate than during the preceding interval from day 500 to day 670. The rate of dimming steadily increased again between days 1270 and 1770. From day 1000 onwards, the light of the circumstellar ring made an increasingly significant contribution to the light of the enclosed supernova, and by day 1250 had become so dominant that it is probable that useful Earth-based photometry of the bare supernova itself was not feasible thereafter.

AB - We present spectroscopic and UBV(RI)c JHKLM photometric observations of SN 1987A in the Large Magellanic Cloud made between days 793 and 1770 after the Kamiokande-II neutrino event, as well as some CCD UBV(RI)c photometry from day 640 to day 792, which overlaps the interval covered in the preceding paper of this series. During the period from about day 670 to day 1260, the U- to M-bolometric magnitude (hereafter MUM) of the supernova and its adjoining circumstellar ring hereafter 'the enclosed supernova' dimmed at an increasingly slower rate than during the preceding interval from day 500 to day 670. The rate of dimming steadily increased again between days 1270 and 1770. From day 1000 onwards, the light of the circumstellar ring made an increasingly significant contribution to the light of the enclosed supernova, and by day 1250 had become so dominant that it is probable that useful Earth-based photometry of the bare supernova itself was not feasible thereafter.

KW - Magellanic Clouds

KW - Supernovae: individual: 1987A

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U2 - 10.1093/mnras/262.2.313

DO - 10.1093/mnras/262.2.313

M3 - Article

AN - SCOPUS:84974808023

SN - 0035-8711

VL - 262

SP - 313

EP - 324

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Spectroscopic and photometric observations of supernova 1987A - VII. Days 793 to 1770

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