Ground-based spectroscopic monitoring of the 2020 periastron in eta Carinae
Abstract
Based on a high signal-to-noise and high plus intermediate resolution (R=100,000 and R > 6,000) ground-based monitoring of eta Carinae periastron (ATEL #13508), we report the following results: Representative lines of the extended primary's photosphere, (H- & delta; and SiII & lambda;6347A) indicate no significant changes as compared to the 2014.5 (Teodoro et al. 2016, ApJ 819, 131).
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- March 2020
- Bibcode:
- 2020ATel13600....1N
- Keywords:
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- Binary;
- Star;
- Variables