J/PASP/123/1062 BF Cyg 2006 outburst spectrum (McKeever+, 2011) ================================================================================ High-dispersion spectroscopy of BF Cygni at the beginning of the 2006 Outburst. McKeever J., Lutz J., Wallerstein G., Munari U., Siviero A. =2011PASP..123.1062M ================================================================================ ADC_Keywords: Stars, variable ; Spectroscopy Abstract: BF Cygni (hereafter BF Cyg) is a symbiotic star that in 2006 July started into an optical outburst that has lasted for several years. Between 2006 August and 2007 January we obtained high-dispersion spectra (r~35,000) over the wavelength range of 3800-10000{AA} of BF Cyg with the 3.5m echelle spectrograph at Apache Point Observatory. The emission lines in the optical spectrum of BF Cyg changed dramatically during the interval of observations. The species found were mostly low-ionization emission lines of H, He, C, N, O, Mg, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, and Ni. Both permitted and forbidden lines were seen. In particular, Fe I was observed in emission, which is not a common phenomenon. Description: Echelle spectrograph observations with a resolution of ~35,000 were obtained with the 3.5m ARC telescope at Apache Point Observatory. Objects: ----------------------------------------------- RA (2000) DE Designation(s) ----------------------------------------------- 19 23 53.51 +29 40 29.2 BF Cyg = V* BF Cyg ----------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table3.dat 46 657 List of emission lines found in 2006 October 3 spectrum of BF Cyg table4.dat 38 23 Prominent absorption lines found in 2007 January 28 spectrum of BF Cyg -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 F8.2 0.1nm lam.obs Observed Wavelength {lambda}_obs_ ({AA}) 10- 16 A7 --- Ion Ion (element and ionisation) 18- 27 A10 --- Mult Multiplet 28- 35 F8.2 0.1nm lam.lab Laboratory Wavelength {lambda}_lab_ 37- 42 F6.2 km/s RV Radial velocity 45- 46 A2 --- Notes Line pecularity (1) -------------------------------------------------------------------------------- Note (1): Notes as follows: p = P-Cygni profile ea = emission to absorption -------------------------------------------------------------------------------- Byte-by-byte Description of file: table4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 F7.2 0.1nm lam.obO Observed Wavelength {lambda}_obs_ ({AA}) 9- 15 A7 --- Ion Ion (element and ionisation) 17- 18 A2 --- Mult Multiplet 20- 26 F7.2 0.1nm lam.lab Laboratory Wavelength {lambda}_lab_ 28- 33 F6.2 km/s RV Radial velocity 35- 38 F4.2 0.1nm EW Equivalent width -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Patricia Vannier [CDS] 20-Mar-2013