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PEREIRA , C. B.

Last name: PEREIRA

First name: C. B.

August 1, 2019 (v1)

Journal article

Metadata-only

Probing the weak wind phenomenon in Galactic O-type giants

de Almeida, E. S. G. Marcolino, W. L. F. Bouret, J.-C.

Aims. Analyses of Galactic late O dwarfs (O8-O9.5V stars) raised the "weak wind problem": spectroscopic mass loss rates (˙ M) are up to two orders of magnitude lower than the theoretical values. We investigated the stellar and wind properties of Galactic late O giants (O8-O9.5III stars). These stars have luminosities log(L /L) ≈ 5.2, this is...

Uploaded on: December 4, 2022
October 3, 2016 (v1)

Conference paper

Metadata-only

Late O Giants and the Weak Wind Problem

de Almeida, E. S. G. Marcolino, W. L. F. Pereira, C. B.

We analysed O giants through UV and optical spectroscopy using the code CMFGEN. We conclude that these stars show weak winds and are at the transition region in luminosity for such issue.

Uploaded on: December 3, 2022