Access to Astronomical Catalogues

← Click to display the menu
J/A+A/351/212       V1794 UBVR time series                   (Jetsu+, 1999)

Time series analysis of V1794 Cygni long-term photometry Jetsu L., Pelt J., Tuominen I. <Astron. Astrophys. 351, 212 (1999)> =1999A&A...351..212J
ADC_Keywords: Stars, variable ; Photometry, UBVRI Keywords: stars: individual: V1794 Cyg - stars: variables: general - stars: activity - techniques: photometric Description: Standard Johnson UBVRI photometry of V1794 Cyg (HD 199178) between 1975 and 1995 is analysed. Instead of the traditional constant period ephemeris, we determine the seasonal periodicities (Pphot) and the primary and secondary minima epochs (tmin,1, tmin,2) of the normalized UBVRI magnitudes using the three stage period analysis (TSPA) and complementary methods. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 20 53 53.7 +44 23 11 V1794 Cyg = HD 199178 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 115 93 Means and total amplitudes for the modelled UBVR light curves of subsets with number of observing nights (Nnigths) ≥7 table3.dat 66 93 The tmin,1, tmin,2 and P for the ynorm of subsets with Nnigths≥7. tables.tex 78 620 LaTeX version of the tables
See also: J/A+AS/139/513 : 1975-1995 V1794 Cyg UBVRI photometry (Jetsu+, 1999) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- SET Subset number 5- 11 F7.2 yr Epoch Observation date 13- 18 F6.4 mag MUmag ? Mean U magnitude 20- 24 F5.4 mag e_MUmag ? rms uncertainty on MUmag 26- 31 F6.4 mag AUmag ? Total U amplitude 33- 37 F5.4 mag e_AUmag ? rms uncertainty on AUmag 39- 44 F6.4 mag MBmag ? Mean B magnitude 46- 50 F5.4 mag e_MBmag ? rms uncertainty on MBmag 52- 57 F6.4 mag ABmag ? Total B amplitude 59- 63 F5.4 mag e_ABmag ? rms uncertainty on ABmag 65- 70 F6.4 mag MVmag Mean V magnitude 72- 76 F5.4 mag e_MVmag rms uncertainty on MVmag 78- 83 F6.4 mag AVmag ? Total V amplitude 85- 89 F5.4 mag e_AVmag ? rms uncertainty on AVmag 91- 96 F6.4 mag MRmag ? Mean R magnitude 98-102 F5.4 mag e_MRmag ? rms uncertainty on MRmag 104-109 F6.4 mag ARmag ? Total R amplitude 111-115 F5.4 mag e_ARmag ? rms uncertainty on ARmag
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 3 I3 --- SET Subset number 5- 6 I2 --- Nnigths Number of observing nights 8 A1 --- HG [r] Rejections (1) 10- 15 F6.4 d Per Period 17- 21 F5.4 d e_Per rms uncertainty on Per 23- 33 F11.3 d tmin1 Epoch of the primary minimum in time 35- 38 F4.3 d e_tmin1 rms uncertainty on tmin1 40- 50 F11.3 d tmin2 ? Epoch of the secondary minimum in time 52- 55 F4.3 d e_tmin2 ? rms uncertainty on tmin2 57- 59 I3 --- S ? Number of times that a secondary minimum tmin2 was present in the models of 200 bootstrap samples.
Note (1): The rejections are denoted with "r", while the rejections are applied to subsets with Nnigths<10. Finally, rejects the tmin,2 with S<190
Acknowledgements: Lauri Jetsu
(End) Patricia Bauer [CDS] 10-Sep-1999
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

catalogue service

© UDS/CNRS

Contact