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J/A+A/530/A146   Spectral and UBV analysis of ε Aur   (Chadima+ 2011)

Spectral and photometric analysis of the eclipsing binary epsilon Aurigae prior to and during the 2009-2011 eclipse. Chadima P., Harmanec P., Bennett P.D., Kloppenborg B., Stencel R., Yang S., Bozic H., Slechta M., Kotkova L., Wolf M., Skoda P., Votruba V., Hopkins J.L., Buil C., Sudar D. <Astron. Astrophys. 530, A146 (2011)> =2011A&A...530A.146C
ADC_Keywords: Stars, variable ; Photometry, UBV ; Spectroscopy Keywords: stars: variables: general - binaries: eclipsing - stars: individual: epsilon Aurigae Abstract: A series of 353 red electronic spectra (from three observatories, mostly from 6300 to 6700Å) obtained between 1994 and 2010, and of 171 UBV photometric observations (from two observatories) of the 2010 eclipse, were analyzed in an effort to better understand epsilon Aur, the well-known, but still enigmatic eclipsing binary with the longest known orbital period (∼27yrs). Description: The file table1a.dat contains measurements of a central intensity (CI), an equivalent width (EW) and a radial velocity (RV) of various lines (H-alpha, Si6347, Si6371, Fe6417 and Fe6433) made on spectra secured at the Ondrejov Observatory (OND). The file table1b.dat contains the same measurements but for spectra secured at the Dominion Astronomical Observatory (DAO) and the file table1c.dat for spectra secured at the Castanet-Tolosan Observatory (CTO). For CTO spectra, the H-alpha line was not measured. Note that the H-alpha line during an eclipse has two absorption cores and both were measured. But a word of caution is needed here - these measurements are done on original spectra, not on spectra after the correction presented in Sect. 4 of the related paper. The radial velocity of the Halpha emission was measured by matching V and R peak maxima of a normal and an inversed line profile. Note that table1a.dat tabel1b.dat and table1c.dat contain "blanks" for measurements which were not done. Its was due to a high asymetry of a particular line or its high degree of blending with strong teluric lines (or disappearing of an Halpha peak) which disables a reasonable measurement of given line characteristics. The file table2b.dat contains U,B,V photometry of eps Aur secured at the Hvar Observatory. The file table2a.dat contains U,B,V photometry of HR 1644 (a check star for eps Aur photometry presented in table2a.dat) secured at the Hvar Observatory. Entire information about all data sets can be found in the related paper in Sect. 2. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 05 01 58.1 +43 49 24 eps Aur = HR 1605 05 06 49.6 +43 10 29 HR 1644 = HD 32655 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1a.dat 133 105 eps Aur CI,EW,RV of various spectral lines (Si, Fe, Ha) (DAO) table1b.dat 133 201 eps Aur CI,EW,RV of various spectral lines (Si, Fe, Ha) (OND) table1c.dat 133 47 eps Aur CI,EW,RV of various spectral lines (Si, Fe) (CTO) table2a.dat 68 204 U,B,V photometry of eps Aur (Hvar Observatory) table2b.dat 68 198 U,B,V photometry of HR 1644 (Hvar Observatory)
Byte-by-byte Description of file: table1a.dat table1b.dat table1c.dat
Bytes Format Units Label Explanations
1- 12 F12.4 --- HJD Heliocentric Julian date 14- 18 F5.3 --- Si1_CI ?=- Central intensity (Si6347) 20- 24 F5.3 0.1nm Si1_EW Equivalent width (Si6347) 26- 30 F5.3 --- Si2_CI Central intensity (Si6371) 32- 36 F5.3 0.1nm Si2_EW Equivalent width (Si6371) 38- 43 F6.2 km/s Si_RV ?=- Radial velocity (mean of both Si lines) 45- 49 F5.3 --- Fe1_CI Central intensity (Fe6417) 51- 55 F5.3 0.1nm Fe1_EW Equivalent width (Fe6417) 57- 61 F5.3 --- Fe2_CI Central intensity (Fe6433) 63- 67 F5.3 0.1nm Fe2_EW Equivalent width (Fe6433) 69- 74 F6.2 km/s Fe_RV ?=- Radial velocity (mean of both Fe lines) 76- 80 F5.3 --- HaC_CI ? Central intensity (H-alpha core) 82- 86 F5.3 0.1nm HaC_EW ? Equivalent width (H-alpha core) 88- 93 F6.2 km/s Ha_RV1 ?=- Radial velocity (H-alpha red absorption) 95-100 F6.2 km/s Ha_RV2 ?=- Radial velocity (H-alpha blue absorption) 102-106 F5.3 --- HaV_CI ?=- Central intensity (H-alpha V emission peak) 108-113 F6.3 0.1nm HaV_EW ?=- Equivalent width (H-alpha V emission peak) 115-119 F5.3 --- HaR_CI ?=- Central intensity (H-alpha R emission peak) 121-126 F6.3 0.1nm HaR_EW ?=- Equivalent width (H-alpha R emission peak) 128-133 F6.2 km/s Ha_RV3 ?=- Radial velocity (H-alpha emission)
Byte-by-byte Description of file: table2a.dat table2b.dat
Bytes Format Units Label Explanations
1- 12 F12.4 --- HJD Heliocentric Julian date 15- 18 F4.2 --- w Weight 21- 25 F5.3 mag Vmag Magnitude (apparent) in V filter 28- 32 F5.3 mag Bmag Magnitude (apparent) in B filter 35- 39 F5.3 mag Umag Magnitude (apparent) in U filter 42- 46 F5.3 mag B-V Color index B-V 49- 53 F5.3 mag U-B Color index U-B 56- 60 F5.3 --- X Air mass 63- 68 F6.3 --- dX Diferential air mass
Acknowledgements: Pavel Chadima, pavel.chadima(at)
(End) Patricia Vannier [CDS] 12-Apr-2011
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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