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J/A+A/598/A85           Disentangled spectra of R145             (Shenar+, 2017)

The Tarantula Massive Binary Monitoring. II. First SB2 orbital and spectroscopic analysis for the Wolf-Rayet binary R145. Shenar T., Richardson N.D., Sablowski D.P., Hainich R., Sana H., Moffat A.F.J., Todt H., Hamann W.-R., Oskinova L.M., Sander A., Tramper F., Langer N., Bonanos A.Z., de Mink S.E., Graefener G., Crowther P.A., Vink J.S., Almeida L.A., de Koter A., Barba R., Herrero A., Ulaczyk K. <Astron. Astrophys. 598, A85 (2017)> =2017A&A...598A..85S (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Binaries, spectroscopic ; Spectroscopy Keywords: binaries: spectroscopic - stars: Wolf-Rayet - stars: massive - Magellanic Clouds - stars: individual: R 145 - stars: atmospheres Abstract: We present the first SB2 orbital solution and disentanglement of the massive Wolf-Rayet binary R145 (P=159d) located in the Large Magellanic Cloud. The primary was claimed to have a stellar mass greater than 300M, making it a candidate for the most massive star known. While the primary is a known late type, H-rich Wolf-Rayet star (WN6h), the secondary could not be so far unambiguously detected. Using moderate resolution spectra, we are able to derive accurate radial velocities for both components. By performing simultaneous orbital and polarimetric analyses, we derive the complete set of orbital parameters, including the inclination. The spectra are disentangled and spectroscopically analyzed, and an analysis of the wind-wind collision zone is conducted. Description: Disentangled spectra of R145, observed spectrum of R145, and observed spectrum of Mk51 (Fig. 9 in the paper) Objects: ------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------ 05 38 57.06 -69 06 05.7 R145 = RMC 145 12 24 14.53 +04 13 33.7 Mk51 = Mrk 51 ------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table.dat 99 7978 Disentangled spectra of R145, observed spectrum of R145 and Mk51 (Fig. 9)
Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1- 11 F11.6 0.1nm lambda1 Wavelength for disentangled spectrum of component 1 of R145 13- 24 F12.10 --- FComp1 Disentangled spectrum of component 1 of R145 26- 36 F11.6 0.1nm lambda2 ? Wavelength for disentangled spectrum of component 2 of R145 38- 49 F12.10 --- FComp2 ? Disentangled spectrum of component 2 of R145 51- 61 F11.6 0.1nm lambda3 ? Wavelength for observed normalized FLAMES spectrum of R145 63- 73 F11.9 --- FR145 ? Observed normalized FLAMES spectrum of R145 (phase ∼0.5) 75- 85 F11.6 0.1nm lambda4 ? Wavelength for observed normalized FLAMES spectrum of Mk51 87- 99 F13.10 --- FMk51 ? Observed normalized FLAMES spectrum of Mk51 (P. Crowther, priv. com.)
Acknowledgements: Tomer Shenar, shtomer(at)astro.physik.uni-potsdam.de References: Almeida et al., Paper I 2017A&A...598A..84A
(End) Patricia Vannier [CDS] 31-Oct-2016
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