NGC 4608

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NGC 4608
NGC 4608 SDSS.jpg
SDSS image of NGC 4608.
Observation data (J2000 epoch)
Constellation Virgo
Right ascension 12h 41m 13.286s [1]
Declination +10° 09′ 20.38″ [1]
Redshift 0.00617 [1]
Heliocentric radial velocity 1850 km/s [1]
Distance 56.4 ± 2.6  Mly (17.3 ± 0.8  Mpc) [2]
Group or cluster Virgo Cluster
Apparent magnitude  (V)11.97 [1]
Characteristics
Type SB00(r) [1]
Size~53,105.36 ly (estimated)
Apparent size  (V)3.2′ × 2.7′ [1]
Other designations
UGC 7842, MCG +02-32-177, PGC 42545 [1]

NGC 4608 is a barred lenticular galaxy located in the constellation of Virgo. The galaxy was discovered by astronomer William Herschel on March 15, 1784. [3] At about 56 million light-years (17.3 megaparsecs) away, [2] it is a member of the Virgo Cluster. [4]

Contents

Physical characteristics

NGC 4608 has a very well-defined bar. Surrounding the bar, there is an inner ring that is defined by a sharp inner edge. Outside of the inner ring, [5] there is a low surface brightness disk [6] that contains weak spiral features. [5]

The center of NGC 4608 is a classical bulge, which is a bulge similar to an elliptical galaxy. [2] The disk in NGC 4608 is practically considered non-existent. One explanation is that the bar in the galaxy was able to form without a disk. Another explanation says that a weak bar forms initially. Over time, the bar grows by causing the external disk to lose angular momentum therefore funneling material toward the bulge. Then the bar would be surrounded by a halo with very little or no disk left. [6]

See also

Related Research Articles

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<span class="mw-page-title-main">NGC 7020</span> Galaxy in the constellation Pavo

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<span class="mw-page-title-main">NGC 4699</span> Spiral galaxy in the constellation Virgo

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<span class="mw-page-title-main">NGC 4340</span> Galaxy in the constellation Coma Berenices

NGC 4340 is a double-barred lenticular galaxy located about 55 million light-years away in the constellation of Coma Berenices. NGC 4340 was discovered by astronomer William Herschel on March 21, 1784. NGC 4340 is a member of the Virgo Cluster. NGC 4340 is generally thought to be in a pair with the galaxy NGC 4350.

<span class="mw-page-title-main">NGC 4457</span> Galaxy in the constellation of Virgo

NGC 4457 is an intermediate spiral galaxy located about 55 million light-years away in the constellation of Virgo. It is also classified as a LINER galaxy, a class of active galaxy defined by their spectral line emissions. NGC 4457 Is inclined by about 33°. It was discovered by astronomer William Herschel on February 23, 1784. Despite being listed in the Virgo Cluster Catalog as VCC 1145, NGC 4457 is a member of the Virgo II Groups which form an extension of the Virgo cluster.

<span class="mw-page-title-main">NGC 4429</span> Galaxy in the constellation Virgo

NGC 4429 is a lenticular galaxy located about 55 million light-years away in the constellation of Virgo. NGC 4429 is tilted at an inclination of about 75° which means that the galaxy is tilted almost edge-on as seen from Earth. NGC 4429 was discovered by astronomer William Herschel on March 15, 1784. The galaxy is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4689</span> Galaxy in the constellation Coma Berenices

NGC 4689 is a spiral galaxy located about 54 million light-years away in the constellation of Coma Berenices. NGC 4689 is also classified as a LINER galaxy. NGC 4689 is inclined at an angle of about 36° which means that the galaxy is seen almost face-on to the Earth's line of sight. NGC 4689 was discovered by astronomer William Herschel on April 12, 1784. The galaxy is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 3726</span> Galaxy in the constellation Ursa Major

NGC 3726 is a barred spiral galaxy located in the constellation Ursa Major. It is located at a distance of circa 45 million light years from Earth, which, given its apparent dimensions, means that NGC 3726 is about 85,000 light years across. It was discovered by William Herschel on February 5, 1788.

<span class="mw-page-title-main">NGC 4570</span> Galaxy in the constellation Virgo

NGC 4570 is an edge-on lenticular galaxy located about 57 million light-years away in the constellation Virgo. NGC 4570 was discovered by astronomer William Herschel on April 13, 1784 and is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4580</span> Galaxy in the constellation Virgo

NGC 4580 is an unbarred spiral galaxy located about 70 million light-years away in the constellation Virgo. NGC 4580 is also classified as a LINER galaxy. It was discovered by astronomer William Herschel on February 2, 1786 and is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4586</span> Spiral galaxy in the constellation Virgo

NGC 4586 is a spiral galaxy located about 50 million light-years away in the constellation Virgo. The galaxy was discovered by astronomer William Herschel on February 2, 1786. Although listed in the Virgo Cluster Catalog, NGC 4586 is considered to be a member of the Virgo II Groups which form a southern extension of the Virgo cluster. NGC 4586 is currently in the process of infalling into the Virgo Cluster and is predicted to enter the cluster in about 500 million years.

<span class="mw-page-title-main">NGC 4596</span> Galaxy in the constellation Virgo

NGC 4596 is a barred lenticular galaxy located about 55 million light-years away in the constellation Virgo. NGC 4596 was discovered by astronomer William Herschel on March 15, 1784. NGC 4596 is a member of the Virgo Cluster and has an inclination of about 38°.

<span class="mw-page-title-main">NGC 4299</span> Spiral galaxy in the constellation Virgo

NGC 4299 is a featureless spiral galaxy located about 55 million light-years away in the constellation Virgo. It was discovered by astronomer William Herschel on March 15, 1784 and is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4324</span> Galaxy in the constellation of Virgo

NGC 4324 is a lenticular galaxy located about 85 million light-years away in the constellation Virgo. It was discovered by astronomer Heinrich d'Arrest on March 4, 1862. NGC 4324 has a stellar mass of 5.62 × 1010M☉, and a baryonic mass of 5.88 × 1010M☉. The galaxy's total mass is around 5.25 × 1011M☉. NGC 4324 is notable for having a ring of star formation surrounding its nucleus. It was considered a member of the Virgo II Groups until 1999, when its distance was recalculated and it was placed in the Virgo W Group.

References

  1. 1 2 3 4 5 6 7 8 "Results for object NGC 4608 (NGC 4608)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-04-26.
  2. 1 2 3 Erwin, Peter; Seth, Anil; Debattista, Victor P.; Seidel, Marja; Mehrgan, Kianusch; Thomas, Jens; Saglia, Roberto; De Lorenzo-Cáceres, Adriana; MacIejewski, Witold; Fabricius, Maximilian; Méndez-Abreu, Jairo; Hopp, Ulrich; Kluge, Matthias; Beckman, John E.; Bender, Ralf; Drory, Niv; Fisher, Deanne (2021). "Composite bulges – II. Classical bulges and nuclear discs in barred galaxies: The contrasting cases of NGC 4608 and NGC 4643". Monthly Notices of the Royal Astronomical Society. 502 (2): 2446–2473. arXiv: 2101.05321 . Bibcode:2021MNRAS.502.2446E. doi: 10.1093/mnras/stab126 .
  3. ↑ "New General Catalog Objects: NGC 4600 - 4649". cseligman.com. Retrieved 2017-09-03.
  4. ↑ "Detailed Object Classifications". ned.ipac.caltech.edu. Retrieved 2017-09-04.
  5. 1 2 "NGC 4608 - SB(r)0/a". The de Vaucouleurs Atlas of Galaxies. Archived from the original on 2019-03-02. Retrieved 2017-09-04.
  6. 1 2 Gadotti, D. A.; de Souza, R. E. (8 January 2003). "NGC 4608 and NGC 5701: Barred Galaxies without Disks?". The Astrophysical Journal. 583 (2): L75–L78. arXiv: astro-ph/0301072 . Bibcode:2003ApJ...583L..75G. doi:10.1086/368159. S2CID   14682379.
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