SIMBAD references

2012A&A...545L...1H - Astronomy and Astrophysics, volume 545, L1-1 (2012/9-1)

The VLT-FLAMES Tarantula Survey. VI. Evidence for rotation of the young massive cluster R136.

HENAULT-BRUNET V., GIELES M., EVANS C.J., SANA H., BASTIAN N., MAIZ-APELLANIZ J., TAYLOR W.D., MARKOVA N., BRESSERT E., DE KOTER A. and VAN LOON J.T.

Abstract (from CDS):

Although it has important ramifications for both the formation of star clusters and their subsequent dynamical evolution, rotation remains a largely unexplored characteristic of young star clusters (few Myr). Using multi-epoch spectroscopic data of the inner regions of 30 Doradus in the Large Magellanic Cloud obtained as part of the VLT-FLAMES Tarantula Survey, we search for rotation of the young massive cluster R136. From the radial velocities of 36 apparently single O-type stars within a projected radius of 10pc from the centre of the cluster, we find evidence, at the 95% confidence level, for rotation of the cluster as a whole. We use a maximum likelihood method to fit simple rotation curves to our data and find a typical rotational velocity of ∼3km/s. When compared to the low velocity dispersion of R136, our result suggests that star clusters may form with at least ∼20% of the kinetic energy in rotation.

Abstract Copyright:

Journal keyword(s): galaxies: star clusters: individual: R136 - Magellanic Clouds - stars: kinematics and dynamics - clusters: general globular

Simbad objects: 11

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2021.06.12-21:41:41

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