Abstract
Infrared photometry of the probable triple WC4(+O?)+O8I: Wolf-Rayet system HD 36402 ( = BAT99-38) in the Large Magellanic Cloud shows emission characteristic of heated dust. The dust emission is variable on a time-scale of years, with a period near 4.7 yr, possibly associated with orbital motion of the O8 supergiant and the inner P ≃ 3.03-d WC4+O binary. The phase of maximum dust emission is close to that of the X-ray minimum, consistent with both processes being tied to colliding wind effects in an elliptical binary orbit. It is evident that Wolf-Rayet dust formation occurs also in metal-poor environments.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1160-1166 |
| Number of pages | 7 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 431 |
| Issue number | 2 |
| DOIs | |
| State | Published - May 11 2013 |
Keywords
- Infrared: stars
- Stars: Wolf-Rayet
- Stars: individual: HD 36402
- Stars: winds, outflows
- X-rays: binaries
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science