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Tarantula Massive Binary Monitoring

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Tarantula Massive Binary Monitoring

Laurent Mahy - KU Leuven

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VLT/FLAMES Tarantula Survey (VFTS):

• 800 massive stars • 360 O-type stars

• 116 binaries (SB1+SB2)

Tarantula Massive Binary Monitoring (TMBM):

• FLAMES (51 SB1+32 SB2) • Multi-epoch campaign

(32 epochs)

• [3950-4560] A

• [H, He I, He II, C III, N III, Si IV]

OGLE photometry (V & I bands) 13 systems

°

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Masses +

Radii

from

photometry

For stars with masses between 6 and 50 Msun:

For galactic stars with masses between 10 and 50 Msun:

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Teff, log g, surface abundances (He, C, N) from spectroscopy Spectral disentangling + Atmosphere modelling

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VFTS 352

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Martins, Mahy, Hervé (2017)

Pilot study of 6 eclipsing massive binaries

30 systems will come

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