Extended Data Table 1 A log of NIRC and NIRC2 observations of WR140 presented in this study

From: Radiation-driven acceleration in the expanding WR140 dust shell

  1. Filters [name / central wavelength / fractional bandpass] for the NIRC camera: [CH4 / 2.269 μm / 6.8%]; [K / 2.2135 μm / 19%]; [PAHCS / 3.0825 μm / 3.3%]; and for the NIRC2 camera: [H / 1.633 μm / 18%]; [Kp / 2.124 μm / 16.5%]; [Lp / 3.776 μm / 18.5%]; [Ms / 4.67 μm / 5.2%]. The "Masking” observing mode corresponds to a partially redundant aperture mask as described in Tuthill et al.22. "Full pupil” indicates normal imagery, while one epoch also employed an occulting "Coronagraph200” spot. Orbital phases were calculated using orbital parameters derived by Monnier et al.1.
Back to article page