http://arxiv.org/abs/2009.01701
The Stingray Nebula, aka Hen3-1357, went undetected until 1990 when bright nebular lines and radio emission were unexpectedly discovered. We report changes in shape and rapid and secular decreases in its nebular emission-line fluxes based on well calibrated images obtained by the Hubble Space Telescope in 1996, 2000, and 2016. Hen3-1357 is now a “recombination nebula”.
B. Balick, M. Guerrero and G. Ramos-Larios
Fri, 4 Sep 20
-1398/65
Comments: 5 rages, 2 figures, 1 table
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