We present a spectroscopic analysis of an extremely rapidly rotating late O-type star, VFTS102, observed during a spectroscopic survey of 30 Doradus. VFTS102 has a projected rotational velocity larger than 500 km s(-1) and probably as large as 600 km s-1; as such it would appear to be the most rapidly rotating massive star currently identified. Its radial velocity differs by 40 kms(-1) from the mean for 30 Doradus, suggesting that it is a runaway. VFTS102 lies 12 pc from the X-ray pulsar PSR J0537-6910 in the tail of its X-ray diffuse emission. We suggest that these objects originated from a binary system with the rotational and radial velocities of VFTS102 resulting from mass transfer from the progenitor of PSR J0537-691 and the supernova explosion, respectively.
ASJC Scopus subject areas
- Space and Planetary Science
- Astronomy and Astrophysics
Dufton, P., Dunstall, P. R., Evans, C. J., Brott, I., Cantiello, M., De Koter, A., De Mink, S. E., Fraser, M., Henault-Brunet, V., Howarth, I. D., Langer, N., Lennon, D. J., Markova, N., Sana, H., & Taylor, W. D. (2011). THE VLT-FLAMES TARANTULA SURVEY: THE FASTEST ROTATING O-TYPE STAR AND SHORTEST PERIOD LMC PULSAR-REMNANTS OF A SUPERNOVA DISRUPTED BINARY? Astrophysical Journal Letters, 743(1), 22-27. [L22]. https://doi.org/10.1088/2041-8205/743/1/L22