 |
Астронет: Астрономическая картинка дня NGC 7814: Маленькое Сомбреро со сверхновой http://variable-stars.ru/db/msg/1749738/eng |
Credit & Copyright: CHART32 Team,
Explanation:
Point your telescope toward the high flying constellation
Pegasus
and you can find this
expanse
of Milky Way stars and distant galaxies.
NGC 7814 is centered in the pretty
field of view that would almost
be covered by a full moon.
NGC 7814 is
sometimes called the Little Sombrero for its
resemblance to the brighter more famous M104,
the Sombrero Galaxy.
Both Sombrero and Little Sombrero are spiral galaxies
seen edge-on, and both have extensive halos and central
bulges cut by a thin disk with thinner dust lanes in silhouette.
In fact, NGC 7814
is some 40 million light-years away and an estimated 60,000 light-years
across.
That actually makes the
Little Sombrero
about the same physical size as
its better known namesake, appearing smaller and fainter
only because it is farther away.
In this telescopic view from July 17, NGC 7814 is hosting a newly
discovered supernova, dominant immediately to the left of the galaxy's core.
Cataloged as SN 2021rhu,
the stellar explosion has been identified as a
Type Ia
supernova, useful toward calibrating the
distance scale
of
the universe.
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.