J/A+A/343/847 Geneva Photometry of Eta Car (van Genderen+ 1999)
Photometric behaviour of η Carinae, a celestial Chinese lantern: 1974-1998.
Van Genderen A.M., Sterken C., De Groot M., Burki G.
<Astron. Astrophys. 343, 847 (1999)>
=1999A&A...343..847V 1999A&A...343..847V
ADC_Keywords: Stars, variable ; Photometry, Geneva
Keywords: stars: individual: eta Carinae - stars: oscillations -
stars: supergiants - stars: variables: general -
techniques: photometric
Abstract:
We discuss 24yr of optical photometry of η Carinae, among which
new Geneva photometry made between 1994 and 1998. Various conclusions
from our previous photometric studies are confirmed. The core hides a
normal S Dor variable (or LBV): it shows light variations on a time
scale of 1-4yr, with superimposed micro oscillations whose
quasi-period indicates a temperature in the order of 22000K.
Therefore, a more complicated model for η Car is necessary to
explain its extraordinary appearance and phenomena exhibited in the
past and at present.
Objects:
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RA (2000) DE Designation(s)
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10 45 03.6 -59 41 04 eta Car = HD 93308
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 60 122 Eta Car Geneva photometry
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See also:
J/ApJS/71/983 : UV spectrum of eta Car (Viotti+ 1989)
J/A+A/304/415 : uvby-Hbeta photometry of Eta Car 1992-94 (van Genderen+, 1995)
J/A+A/419/215 : Emission lines of eta Car (Hartman+, 2004)
J/AJ/129/2018 : RXTE scaled fluxes of eta Car (Corcoran+, 2005)
J/ApJS/157/138 : UV spectrum of eta Car (Nielsen+, 2005)
J/ApJS/163/173 : UV spectrum of eta Car in 2003.5 (Gull+, 2006)
J/ApJS/168/289 : NUV spectrum of eta Car in 2003.5 (Nielsen+, 2007)
J/A+A/493/1093 : BVRI light curves of eta Car (Fernandez-Lajus+, 2009)
J/ApJS/181/473 : Eta Carinae: visible and near-IR analysis (Nielsen+, 2009)
J/other/NewA/15.108 : UBVRIHalpha of eta Car in 2009 (Fernandez-Lajus+ 2010)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d JD Julian date
16- 20 F5.3 mag Vmag Geneva V magnitude
25- 29 F5.3 mag [U-B] Geneva [U-B] colour index
31- 36 F6.3 mag [V-B] Geneva [V-B] colour index
38- 42 F5.3 mag [B1-B] Geneva [B1-B] colour index
44- 48 F5.3 mag [B2-B] Geneva [B2-B] colour index
50- 54 F5.3 mag [V1-B] Geneva [V1-B] colour index
56- 60 F5.3 mag [G-B] Geneva [V-B] colour index
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(End) Francois Ochsenbein [CDS] 02-Sep-2002