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J/A+A/526/A44       Observations of II Peg                   (Lindborg+, 2011)

Doppler images of the RS Canum Venaticorum binary II Pegasi during the years 1994-2002. Lindborg M., Korpi M.J., Hackman T., Tuominen I., Ilyin I., Piskunov N. <Astron. Astrophys. 526, A44 (2011)> =2011A&A...526A..44L
ADC_Keywords: Stars, variable ; Spectroscopy Keywords: stars: individual: HD 224085 - stars: activity - stars: imaging - starspots Abstract: We publish 16 Doppler imaging temperature maps for the years 1994-2002 of the active RS CVn star II Peg. The six maps from 1999-2002 are based on previously unpublished observations. Through Doppler imaging we want to study the spot evolution of the star and in particular compare this with previous results showing a cyclic spot behaviour and persistent active longitudes. Description: The observations were collected with the SOFIN spectrograph at the Nordic Optical Telescope. The temperature maps were calculated using a Doppler imaging code based on Tikhonov regularization. Objects: -------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------- 23 55 04.1 +28 38 01 II Peg = HD 224085 -------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 27 144 Summary of the observations 1994-1995, 1996-1998, and 1999-2002
See also: J/A+A/334/863 : II Peg radial velocities (Berdyugina+ 1998) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 14 F14.6 d HJD Heliocentric Julian date 16- 23 F8.6 --- Phase Phase calculated based on the ephemeris given in the paper 25- 27 I3 --- S/N Signal-to-Noise Ratio
Acknowledgements: Marjaana Lindborg, marjaana.lindborg(at)helsinki.fi
(End) Patricia Vannier [CDS] 16-Nov-2010
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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