The Decline and Fall of the Youngest Planetary Nebula

The Decline and Fall of the Youngest Planetary Nebula

The Stingray Nebula, a.k.a. Hen3-1357, appeared for the first time in 1990 when bright nebular lines and radio emission that had not been observed before were unexpectedly discovered. In the ensuing years, the nebula faded precipitously. We report changes in shape and large decreases in its nebular...

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Veröffentlicht in:The Astrophysical journal 2021-02, Vol.907 (2), p.104
Hauptverfasser: Balick, Bruce, Guerrero, Martín A., Ramos-Larios, Gerardo
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
Emission lines
Emissions
Fluxes
Hubble Space Telescope
Ionization
Planetary nebulae
Planets
Post-asymptotic giant branch stars
Radio emission
Space telescopes
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Beschreibung
Zusammenfassung:The Stingray Nebula, a.k.a. Hen3-1357, appeared for the first time in 1990 when bright nebular lines and radio emission that had not been observed before were unexpectedly discovered. In the ensuing years, the nebula faded precipitously. We report changes in shape and large decreases in its nebular emission-line fluxes based on well-calibrated images obtained by the Hubble Space Telescope in 1996 and 2016. Hen3-1357 is now a "recombination nebula."
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/abcc61