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NGC 4535 (Barred Spiral Galaxy)


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NGC 4535
Barred Spiral Galaxy (棒渦巻銀河)
Gx SBc


別名 (Other names)
PGC 41812, UGC 7727, MCG 1-32-104

明るさ (Brightness)
9.8等級

星座 (Constellation)
おとめ座 (Vir) (Virgo)


距離 (Distance)
5,200万光年 (52 million light-years)

NGC 4535 is a barred spiral galaxy located 52 million light years from the Earth in the constellation Virgo.

NGC 4535 (Barred Spiral Galaxy) : Picture

NGC 4535 (Barred Spiral Galaxy)
NGC 4535 (Barred Spiral Galaxy)
(C) ESO
This image depicts the galaxy NGC 4535, in the constellation of Virgo, on a beautiful background full of many distant faint galaxies. Its almost circular appearance shows that we observe it nearly face-on. In the centre of the galaxy, there is a well-defined bar structure, with dust lanes that curve sharply before the spiral arms break from the ends of the bar. The bluish colour of the spiral arms points to the presence of a large number of hot young stars. In the centre, however, older and cooler stars give the bulge of the galaxy a yellower appearance.

This visible image was made with the FORS1 instrument on ESO’s 8.2-metre Very Large Telescope. The galaxy can also be seen through smaller amateur telescopes, and was first observed by William Herschel in 1785. When seen through a smaller telescope, NGC 4535 has a hazy, ghostly appearance, which inspired the prominent amateur astronomer Leland S. Copeland to name it “The Lost Galaxy” in the 1950s.

NGC 4535 is one of the largest galaxies in the Virgo Cluster, a massive cluster of as many as 2000 galaxies, about 50 million light-years away. Although the Virgo Cluster is not much larger in diameter than the Local Group — the galaxy cluster to which the Milky Way belongs —  it contains almost fifty times as many galaxies.

NGC 4535 (Barred Spiral Galaxy)
NGC 4535 (Barred Spiral Galaxy)
(C) Doug Matthews and EJ Jones/Adam Block/NOAO/AURA/NSF
NGC 4535 is a fantastic face-on spiral with clearly defined arms. Note how the young bright blue stars define the arms- along with pink knots of emission nebulae in the galaxy. The galaxy was studied as part of the Hubble Space Telescope Extragalactic Distance Scale Key Project. Astronomers studied luminous Cepheid variables in this galaxy and estimate its distance to be about 52 million light years away. Also note the handful of background galaxies in the image. Pretty incredible!

NGC 4535 (Barred Spiral Galaxy) NGC 4535 (Barred Spiral Galaxy)
NGC 4535 (Barred Spiral Galaxy)
(C) ESO
NGC 4535 (Barred Spiral Galaxy)
(C) NOAO
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NGC 4535 (Barred Spiral Galaxy) : Movie

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