NGC 4638

Last updated
NGC 4638
SDSS NGC 4638.jpg
Sloan Digital Sky Survey image of NGC 4638.
Observation data (J2000 epoch)
Constellation Virgo
Right ascension 12h 42m 47.4s [1]
Declination 11° 26′ 33″ [1]
Redshift 0.003843 [1]
Helio radial velocity 1152 km/s [1]
Distance 50.77  Mly (15.565  Mpc) [1]
Group or cluster Virgo Cluster
Apparent magnitude  (V)12.1 [1]
Characteristics
Type S0 [1]
Size~42,800  ly (13.13  kpc) (estimated) [1]
Apparent size  (V)2.17 x 1.27 [1]
Other designations
NGC 4667, CGCG 70-229, CGCG 71-6, MCG 2-32-187, PGC 42728, UGC 7880, VCC 1938 [1]

NGC 4638 is an edge-on lenticular galaxy [2] located about 50 million light-years away [3] in the constellation Virgo. [4] NGC 4638 was discovered by astronomer William Herschel on March 15, 1784. [5] The galaxy is a member of the Virgo Cluster. [6] [7]

Contents

Structure

At the center of NGC 4638, there is a small bulge. There is also an edge-on disk and a diffuse, boxy halo. The shallow surface brightness gradient of the halo is characteristic of a large spheroidal galaxy. This means that NGC 4638 has properties of both S0 and Sph galaxies. [8]

See also

Related Research Articles

<span class="mw-page-title-main">NGC 4309</span> Galaxy in the constellation Virgo

NGC 4309 is a lenticular galaxy located about 55 million light-years away in the constellation Virgo. The galaxy was discovered by astronomer Christian Peters in 1881 and is a member of the Virgo Cluster.

<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 4498</span> Galaxy in the constellation Coma Berenices

NGC 4498 is a barred spiral galaxy located about 50 million light-years away in the constellation Coma Berenices. NGC 4498 was discovered by astronomer William Herschel on March 21, 1784. NGC 4498 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4528</span> Galaxy in the constellation Virgo

NGC 4528 is a barred lenticular galaxy located about 50 million light-years away in the constellation Virgo. It 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 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 4595</span> Galaxy in the constellation Coma Berenices

NGC 4595 is a spiral galaxy located about 42 million light-years away in the constellation Coma Berenices. NGC 4595 was discovered by astronomer William Herschel on January 14, 1787. NGC 4595 is a member of the Virgo Cluster.

<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 4598</span> Galaxy in the constellation Virgo

NGC 4598 is a barred lenticular galaxy located in the constellation Virgo. NGC 4598 was discovered by astronomer William Herschel on April 15, 1784. The distance to NGC 4598 has not been accurately determined; measurements vary from 64 to 102 million light-years. According to the NASA/IPAC Extragalactic Database, its redshift based distance is 102 Mly (31.3 Mpc) while its redshift independent based distance is 88.71 Mly (27.200 Mpc). Also, according to SIMBAD, its distance is 63.7 Mly (19.54 Mpc). NGC 4598's average distance is 84.8 Mly (26.0 Mpc). NGC 4598 is usually considered to be a member of the Virgo Cluster. However, P. Fouqu´e et al. suggests it may be a background galaxy independent of the main cluster.

<span class="mw-page-title-main">NGC 4607</span> Galaxy in the constellation Virgo

NGC 4607 is an edge-on spiral galaxy located about 56 million light-years away in the constellation Virgo. NGC 4607 was discovered by astronomer R. J. Mitchell on April 24, 1854. The galaxy is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4659</span> Galaxy in the constellation Coma Berenices

NGC 4659 is a lenticular galaxy located about 54 million light-years away in the constellation Coma Berenices. NGC 4659 was discovered by astronomer William Herschel on April 12, 1784 and is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4207</span> Spiral galaxy in the constellation Virgo

NGC 4207 is a spiral galaxy located about 50 million light-years away in the constellation Virgo. The galaxy was discovered by astronomer Heinrich d'Arrest on March 23, 1865. NGC 4207 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4212</span> Galaxy in the constellation Coma Berenices

NGC 4212 is a flocculent spiral galaxy with LINER activity located about 53 million light-years away in the constellation Coma Berenices. The galaxy was discovered by astronomer William Herschel on April 8, 1784 and was listed in the NGC catalog as NGC 4208. He then observed the same galaxy and listed it as NGC 4212. Astronomer John Louis Emil Dreyer later concluded that NGC 4208 was identical to NGC 4212. NGC 4212 is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4222</span> Edge-on spiral galaxy in the constellation Coma Berenices

NGC 4222 is an edge-on spiral galaxy located about 60 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on April 8, 1784 and is often misidentified as IC 3087. NGC 4222 is a member of the Virgo Cluster and is a companion of NGC 4216 which lies about 180,000 ly (56 kpc) away. Despite this, the two galaxies are not interacting.

<span class="mw-page-title-main">NGC 4237</span> Galaxy in the constellation Coma Berenices

NGC 4237 is a flocculent spiral galaxy located about 60 million light-years away in the constellation Coma Berenices. The galaxy was discovered by astronomer William Herschel on December 30, 1783 and is a member of the Virgo Cluster. It is also classified as a LINER galaxy and as a Seyfert galaxy.

<span class="mw-page-title-main">NGC 4267</span> Galaxy in the constellation Virgo

NGC 4267 is a barred lenticular galaxy located about 55 million light-years away in the constellation Virgo. It was discovered by astronomer William Herschel on April 17, 1784 and is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4298</span> Galaxy in the constellation Coma Berenices

NGC 4298 is a flocculent spiral galaxy located about 53 million light-years away in the constellation Coma Berenices. The galaxy was discovered by astronomer William Herschel on April 8, 1784 and is a member of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4297</span> Galaxy in the constellation Virgo

NGC 4297 is a lenticular galaxy located about 200 million light-years away in the constellation Virgo. It was discovered by astronomer William Herschel on April 13, 1784. It forms an interacting pair with NGC 4296.

<span class="mw-page-title-main">NGC 4312</span> Galaxy in the constellation Coma Berenices

NGC 4312 is an edge-on unbarred spiral galaxy located about 55 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on January 14, 1787. NGC 4312 is a member of the Virgo Cluster and is a LINER galaxy.

<span class="mw-page-title-main">NGC 4313</span> Spiral galaxy in the constellation Virgo

NGC 4313 is an edge-on spiral galaxy located about 50 million light-years away in the constellation Virgo. It was discovered by astronomer William Herschel on March 15, 1784. NGC 4313 is a member of the Virgo Cluster and is classified as LINER and as a Seyfert galaxy.

<span class="mw-page-title-main">NGC 4316</span> Spiral galaxy in the constellation Virgo

NGC 4316 is an edge-on spiral galaxy located about 70 million light-years away in the constellation Virgo. It was discovered by astronomer Wilhelm Tempel on March 17, 1882. NGC 4316 is a member of the Virgo Cluster and is classified as LINER and as a Seyfert galaxy.

References

  1. 1 2 3 4 5 6 7 8 9 10 "NASA/IPAC Extragalactic Database". Results for NGC 4638. Retrieved 2018-03-29.
  2. ↑ Falcón-Barroso, Jesús; Knapen, Johan H. (2013-09-02). Secular Evolution of Galaxies. Cambridge University Press. p. 110. ISBN   978-1-107-03527-0.
  3. ↑ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-03-31.
  4. ↑ "Revised NGC Data for NGC 4638". spider.seds.org. Retrieved 2018-03-31.
  5. ↑ "New General Catalog Objects: NGC 4600 - 4649". cseligman.com. Retrieved 2018-03-31.
  6. ↑ Binggeli, B.; Sandage, A.; Tammann, G. A. (1985-09-01). "Studies of the Virgo Cluster. II - A catalog of 2096 galaxies in the Virgo Cluster area". The Astronomical Journal. 90: 1681–1759. Bibcode:1985AJ.....90.1681B. doi:10.1086/113874. ISSN   0004-6256.
  7. ↑ "The Virgo Cluster". www.atlasoftheuniverse.com. Retrieved 2018-03-31.
  8. ↑ Kormendy, John; Bender, Ralf (2012). "A Revised Parallel-sequence Morphological Classification of Galaxies: Structure and Formation of S0 and Spheroidal Galaxies". The Astrophysical Journal Supplement Series. 198 (1): 2. arXiv: 1110.4384 . Bibcode:2012ApJS..198....2K. doi:10.1088/0067-0049/198/1/2. ISSN   0067-0049. S2CID   118326756.


This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.