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J/AJ/139/2269       P Cyg Hα squared visibility        (Balan+, 2010)

The spatially resolved Hα-emitting wind structure of P Cygni. Balan A., Tycner C., Zavala R.T., Benson J.A., Hutter D.J., Templeton M. <Astron. J., 139, 2269-2278 (2010)> =2010AJ....139.2269B
ADC_Keywords: Stars, variable ; Interferometry ; Photometry, H-alpha Keywords: stars: individual (P Cyg) - stars: winds, outflows - techniques: interferometric Abstract: High spatial resolution observations of the Hα-emitting wind structure associated with the luminous blue variable star P Cygni were obtained with the Navy Prototype Optical Interferometer. These observations represent the most comprehensive interferometric data set on P Cyg to date. We demonstrate how the apparent size of the Hα-emitting region of the wind structure of P Cyg compares between the 2005, 2007, and 2008 observing seasons and how this relates to the Hα line spectroscopy. Using the data sets from 2005, 2007, and 2008 observing seasons, we fit a circularly symmetric Gaussian model to the interferometric signature from the H#-emitting wind structure of P Cyg. Description: High angular resolution long-baseline interferometric observations were obtained on P Cyg over 37 nights in 2005, 2007, and 2008 using the Navy Prototype Optical Interferometer (NPOI) located near Flagstaff, Arizona. We obtained complementary spectroscopy of P Cyg using Lowell Observatory's John S. Hall 1.1m telescope located at the same observing site as the NPOI. Objects: --------------------------------------------- RA (2000) DE Designation(s) --------------------------------------------- 20 17 47.20 +38 01 58.6 P Cyg = HR 7763 --------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 46 1534 Calibrated Hα squared visibilities of P Cyg
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 11 F11.3 d JD Julian Date 13- 20 F8.3 10+6/rad u Spatial frequency u in 10+6cycles/radian 22- 28 F7.3 10+6/rad v Spatial frequency v in 10+6cycles/radian 30- 34 F5.3 --- VHa2 Hα squared visibility 36- 40 F5.3 --- e_VHa2 Uncertainty in VHa2 42- 46 A5 --- Base Baseline configuration
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 30-May-2012
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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