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J/A+A/367/236       Radial velocity variations of EN Lac      (Lehmann+, 2001)

A new analysis of the radial-velocity variations of the eclipsing and spectroscopic binary EN Lacertae Lehmann H., Harmanec P., Aerts C, Bozic H., Eenens P., Hildebrandt G., Holmgren D., Mathias P., Scholz G., Slechta M., Yang S. <Astron. Astrophys. 367, 236 (2001)> =2001A&A...367..236L
ADC_Keywords: Binaries, eclipsing ; Binaries, orbits ; Binaries, spectroscopic ; Radial velocities Keywords: stars: binaries: close - stars: binaries: eclipsing - stars: binaries: spectroscopic - stars: fundamental parameters - stars: oscillations - stars: individual: EN Lac Abstract: An analysis of 1236 new electronic spectra of the eclipsing binary EN Lac from four observatories and of 994 radial velocities (RV hereafter) from photographic spectra, published by several authors, has allowed us to disentangle the RV variations due to orbital motion and due to pulsations of the star. New, accurate orbital elements as well as precise values of the three pulsation periods, already known from the previous studies, were derived. The accuracy of the orbital solution has been substantially improved after the observed RV changes were properly prewhitened for the short-term oscillations. For the first time we present evidence of line profile variations of EN Lac. They correlate well with the short-term RV variations but they alternatively occur with periods corresponding either to the fundamental periods or to the first harmonics of the short-term RV variations. Objects: ------------------------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------------------------- 22 56 23.6 +41 36 14 EN Lac = 16 Lac = HD 216916 ------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 22 1236 New radial velocities of EN Lac
See also: J/A+A/304/406 : Photometry and radial velocities of 16 Lac (Chapellier+, 1995) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 12 F12.4 d HJD Heliocentric Julian Date 14- 19 F6.2 km/s RV Radial velocity 21- 22 I2 --- Source See Note (1)
Note (1): Column "Source" is identical with column "set" in Table 2 of the printed paper which gives the detailed journal of observations.
Acknowledgements: Holger Lehmann
(End) Patricia Bauer [CDS] 31-Jan-2001
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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