arXiv Open Access 2013

Optical linear polarization measurements of WR massive binary and single stars

Stavros Akras Julio Ramirez-Velez David Hiriart Jose Manuel Lopez

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Abstrak

We present optical (UBVRI) linear polarimetric observations of 8 Wolf-Rayet (WR) massive binaries and single stars. We have corrected the observed values for the interstellar extinction and polarization by the interstellar medium to obtain the intrinsic polarization and position angle. We find three highly polarization stars between 5% and 10% (WR1, WR5 and WR146), three between 3% and 4% (WR2, WR3 and WR4), and two between 1% and 2% (WR137 and WR140). Moreover, 5 stars show increasing degree of polarization to shorter wavelengths (e.g WR 146) indicative with asymmetric circumstellar envelope and 3 have nearly constant polarization within the errors (e.g WR 140).

Topik & Kata Kunci

astro-ph.GA astro-ph.SR

Penulis (4)

Stavros Akras

Julio Ramirez-Velez

David Hiriart

Jose Manuel Lopez

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APA MLA BibTeX

Akras, S., Ramirez-Velez, J., Hiriart, D., Lopez, J.M. (2013). Optical linear polarization measurements of WR massive binary and single stars. https://arxiv.org/abs/1309.0882

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Informasi Jurnal

Tahun Terbit: 2013
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓