Classical Nova Carinae 2018: Discovery of circumbinary iron and oxygen
| Autor: | Katherine M. Blundell, Steven Lee, Dominic McLoughlin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics Angular momentum 010308 nuclear & particles physics FOS: Physical sciences Astronomy and Astrophysics Astrophysics 01 natural sciences Nova (rocket) Space and Planetary Science 0103 physical sciences Circumbinary planet Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics Event (particle physics) |
| Popis: | We present time-lapse spectroscopy of a classical nova explosion commencing 9 d after discovery. These data reveal the appearance of a transient feature in Fe ii and [O i]. We explore different models for this feature and conclude that it is best explained by a circumbinary disc shock-heated following the classical nova event. Circumbinary discs may play an important role in novae in accounting for the absorption systems known as transient heavy element absorption (THEA), the transfer of angular momentum, and the possible triggering of the nova event itself. |
| Databáze: | OpenAIRE |
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