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J/A+A/600/A96       V407 Cyg spectral variations                 (Iijima+, 2017)

Spectral variations of the symbiotic star V407 Cygni around light maximum of the secondary Mira variable in 2012. Iijima T., Naito H. <Astron. Astrophys. 600, A96 (2017)> =2017A&A...600A..96I (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, cataclysmic ; Novae ; Spectroscopy Keywords: stars: individual: V407 Cyg - novae, cataclysmic variables - stars: symbiotic Abstract: The outburst of the symbiotic recurrent nova V407 Cyg in 2010 has been studied by numerous authors. On the other hand, its spectral variations in the quiescent stage have not been well studied yet. This paper is probably the first report for the relation between the pulsation of the secondary Mira variable and the temperature of the primary hot component for V407 Cyg. The spectral variation in the post-outburst stage has been monitored to study the properties of this object. In the course of this work, we found some unexpected spectral variations around the light maximum of the secondary Mira variable in 2012. The relation between the mass transfer in the binary system and the pulsation of the secondary Mira variable is studied. High- and low-resolution optical spectra obtained at the Astronomical Observatories at Asiago were used. The photometric data depend on the database of the VSNET. Description: The calibrated low- and high-resolution spectra of V407 Cyg used in the article are presented. The spectra are given in the Fits format. The low- dispersion spectra are named as becNNNNN.fits, and the high-dispersion spectra as echNNNNN.fits, where NNNNN is the ID number of the spectra given in Table 1. The sensitivity of the spectrographs were calibrated using the spectra of the standard stars BD+40 4032 or HD192281 obtained during the same nights of the observations. The wavelengths are given in the heliocentric frame, and no correction is applied for the interstellar extinction. Objects: ------------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------------ 21 02 09.81 +45 46 33.0 V407 Cyg = NOVA Cyg 1936 ------------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file list.dat 141 18 List of fits spectra fits/* 0 18 Individual fits spectra
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right ascension (J2000) 4- 5 I2 min RAm Right ascension (J2000) 7- 8 I2 s RAs Right ascension (J2000) 10 A1 --- DE- Declination sign (J2000) 11- 12 I2 deg DEd Declination (J2000) 14- 15 I2 arcmin DEm Declination (J2000) 17- 18 I2 arcsec DEs Declination (J2000) 20- 23 I4 --- Nx Number of measurements 25- 45 A21 --- Obs.Date Observation date (YYYY-MM-DDThh:mm:ss.s) 47- 50 I4 s TExp Exposure time 52- 58 F7.2 0.1nm blambda Lower value of wavelength interval 60- 66 F7.2 0.1nm Blambda Upper value of wavelength interval 68- 75 F8.6 0.1nm dlambda Wavelenght resolution 77- 80 I4 Kibyte size Size of FITS file 82- 94 A13 --- FileName Name of FITS file, in subdirectory fits 96-141 A46 --- Title Title of the FITS file
Acknowledgements: Takashi Iijima, takashi.iijima(at)oapd.inaf.it
(End) Patricia Vannier [CDS] 16-Jan-2017
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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