J/A+A/596/A44 Tr16-22. V and V/I Stokes parameters (Naze+, 2016) ================================================================================ The puzzling properties of the magnetic O star Tr16-22. Naze Y., Barba R., Bagnulo S., Morrell N., Gamen R., Petit V., Neiner C. =2016A&A...596A..44N (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Stars, early-type ; Magnetic fields Keywords: stars: early-type - X-rays: stars - stars: individual: Tr16-22 - stars: magnetic field Abstract: The detection of bright, hard, and variable X-ray emission in Tr16-22 prompted spectropolarimetric observations of this star, which in turn led to the discovery of a surface magnetic field. We want to further constrain the properties of this star, in particular to verify whether X-ray variations are correlated to changes in optical emission lines and magnetic field strength, as expected from the oblique rotator model that is widely accepted for magnetic O stars. We have obtained new low-resolution spectropolarimetric and long-term high-resolution spectroscopic monitoring of Tr16-22, and we also analyse new, serendipitous X-ray data. Description: The following tables provide the I (2nd column) and V/I (3rd column) values vs wavelength (1st column), for each FORS2 observation of 2015. They are raw, i.e. not shifted for heliocentric correction, not rectified, not filtered by line-selecting masks, not filtered for deviant points... (see Sect. 2.2 of the paper for details on the reduction and subsequent analysis) to permit re-analysis. However, the authors advice anyone interested doing so to rather reduce the data from scratch (data are available in the ESO archive). Note also that the I was not flat-fielded, as needed for the analysis (see Sect. 2.2). Objects: -------------------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------------------- 10 45 08.22 -59 46 07.0 Tr 16-22 = Cl Trumpler 16 22 -------------------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file list.dat 41 7 List of observation files files/* . 7 Individual observation files -------------------------------------------------------------------------------- Byte-by-byte Description of file: list.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 13 A13 --- FileName Name of the file in subdirectory files 16-41 A26 --- Title Title of the file -------------------------------------------------------------------------------- Byte-by-byte Description of file: files/* -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 7 F7.2 0.1nm lambda Wavelength 9- 18 F10.2 --- I Stokes I 20- 34 F15.9 --- V/I Stokes V/I -------------------------------------------------------------------------------- Acknowledgements: Yael Naze, ynaze(at)uliege.be ================================================================================ (End) Patricia Vannier [CDS] 30-Sep-2016