J/A+A/388/298 BV photometry of RT Lac (Frasca+, 2002)
Hα spectroscopy and BV photometry of RT Lacertae
Frasca A., Cakirli O., Catalano S., Ibanoglu C., Marilli E., Evren S., Tas G.
<Astron. Astrophys. 388, 298 (2002)>
=2002A&A...388..298F 2002A&A...388..298F
ADC_Keywords: Stars, variable ; Photometry, UBV
Keywords: stars: activity - stars: binaries: spectroscopic - stars: late-type -
stars: starspots - stars: individual: RT Lac
Abstract:
Contemporaneous spectroscopic and photometric BV observations of the
RS CVn type eclipsing binary RT Lacertae were performed in summer
2000. The photometric observations were obtained at the Ege University
Observatory, while the spectroscopic ones were carried out at Catania
Astrophysical Observatory in the spectral range 5860-6700Å. We
obtained a high quality radial velocity curve of the system that
allowed us to give more accurate values of the orbital parameters.
Objects:
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RA (2000) DE Designation(s)
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22 01 30.7 +43 53 25 RT Lac
22 00 36.5 +44 06 18 HD 209219
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 32 478 B and V differential magnitudes of RT Lac in 2000
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See also:
J/A+A/287/817 : Period changes in RT Lac (Keskin+ 1994)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d HJD Heliocentric Julian Date
15- 20 F6.4 --- Phase Orbital phase
22- 26 F5.3 mag DBmag Differential B magnitude (RT Lac - HD 209219)
28- 32 F5.3 mag DVmag Differential V magnitude (RT Lac - HD 209219)
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Acknowledgements: Antonio Frasca
(End) Patricia Bauer [CDS] 10-Apr-2002