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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
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:
    ----------------------------------------------------------
       RA   (2000)   DE      Designation(s)
    ----------------------------------------------------------
    10 45 03.6   -59 41 04   eta Car = HD 93308
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table2.dat        60      122   Eta Car Geneva photometry


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

   Bytes Format Units   Label     Explanations

   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

(End)                                   Francois Ochsenbein [CDS]    02-Sep-2002