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 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:
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RA (2000) DE Designation(s)
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05 38 57.06 -69 06 05.7 R145 = RMC 145
12 24 14.53 +04 13 33.7 Mk51 = Mrk 51
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 99 7978 Disentangled spectra of R145, observed spectrum
of R145 and Mk51 (Fig. 9)
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Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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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.)
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Acknowledgements:
Tomer Shenar, shtomer(at)astro.physik.uni-potsdam.de
References:
Almeida et al., Paper I 2017A&A...598A..84A 2017A&A...598A..84A
(End) Patricia Vannier [CDS] 31-Oct-2016