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Астронет: Астрономическая картинка дня APOD: 2025 June 9 Б Between Scylla and Charybdis: A Double Cosmic Discovery http://www.astronet.ru/db/msg/1965835 |
Credit & Copyright: M. Drechsler, Y. Sainty, A. Soto, N. Martino,
L. Leroux-Gere,
S. Khallouqui, & A. Kaeouach;
Text:
Ogetay Kayali
(Michigan Tech U.)
Explanation:
Can you identify this celestial object?
Likely not Б because this is a
discovery image.
Massive stars forge heavy elements in their cores and,
after a few million years, end their lives in powerful
supernova explosions.
These
remnants cool relatively quickly and fade,
making them difficult to detect.
To uncover such faint, previously unknown supernova remnants,
a dedicated group of amateur astrophotographers searched through
sky surveys
for possible supernova remnant candidates.
The result: the first-ever image of supernova remnant G115.5+9.1 Б
named Scylla by its discoverersБglowing faintly
in the constellation of the mythological King of Aethiopia:
Cepheus.
Emission from
hydrogen atoms in the remnant is shown in red,
and faint
emission from oxygen is shown in hues of blue.
Surprisingly, another discovery lurked to
the upper right: a faint, previously unknown
planetary nebula candidate.
In keeping with mythological tradition,
it was named Charybdis (Sai 2) Б a nod to the ancient Greek expression
"caught between Scylla and Charybdis" from
HomerБs Odyssey.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day