NGC 4123

NGC 4123
NGC 4123
	NGC 4123 with Legacy Surveys DR10
Observation data (J2000 epoch)
Right ascension	12h 08m 11.119s
Declination	+02° 52′ 41.78″
Redshift	0.00429±0.00002
Heliocentric radial velocity	1,326 km/s
Distance	75 ± 14 Mly (22.9 ± 4.2 Mpc)
Apparent magnitude (V)	11.4
Apparent magnitude (B)	13.10
Characteristics
Type	SBx(rs)ab
Mass/Light ratio	2.25 M☉/L☉
Apparent size (V)	1.900′ × 0.646′ (NIR)
Other designations
	NGC 4123, UGC 7116, PGC 38531, LEDA 38531, Mrk 1466

Last updated December 03, 2023 • 1 min readFrom Wikipedia, The Free Encyclopedia

NGC 4123 is a modest-sized,^[10] strongly-barred spiral galaxy ^[7] located 75 million light-years ^[4] away in the equatorial constellation of Virgo. It was discovered February 25, 1784 by William Herschel.^[5] This is a member of the Virgo cluster, and it belongs to a group of three galaxies.^[11] A companion galaxy, NGC 4116, lies at an angular separation of 14′ to the southwest. There is no indication of an interaction between the two galaxies.^[7] The third member of the group is NGC 4179.^[11]

The morphological classification of NGC 4123 is SBx(rs)ab, which indicates this is a spiral galaxy with a central X-shaped bar (SBx) encircled by an incomplete ring structure (rs) and moderate to tightly wound spiral arms (ab). The plane of the galaxy is inclined at an angle of 46.9° to the line of sight from the Earth. It lacks a large spheroidal bulge at the core, showing only a luminous point-like source.^[10] Blue knots in the outer spiral arms indicate that star formation is ongoing.^[7] The galaxy has a stellar mass of 1.95×10¹⁰ M_☉ ^[6] with a star formation rate of 3.429±3.281 M_☉·yr⁻¹.^[12] The atomic gas in the galaxy has a mass of 1.06×10¹⁰ M_☉.^[10]

Radio emission has been detected from an HII nucleus, which is consistent with it having a weak active galactic nucleus.^[13] If there is a supermassive black hole at the core, it has an estimated mass of 10⁷ M_☉.^[14]

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NGC 2787 is a barred lenticular galaxy approximately 24 million light-years away in the northern constellation of Ursa Major. It was discovered on December 3, 1788 by German-born astronomer William Herschel. J. L. E. Dreyer described it as, "bright, pretty large, a little extended 90°, much brighter middle, mottled but not resolved, very small (faint) star involved to the southeast". The visible galaxy has an angular size of 2.5 × 1.5 arcminutes or 3.24 × 1.81 arcminutes and an apparent visual magnitude of 11.8.

NGC 2903 is an isolated barred spiral galaxy in the equatorial constellation of Leo, positioned about 1.5° due south of Lambda Leonis. It was discovered by German-born astronomer William Herschel, who cataloged it on November 16, 1784. He mistook it as a double nebula, as did subsequent observers, and it wasn't until the nineteenth century that the Third Earl of Rosse resolved into a spiral form. J. L. E. Dreyer assigned it the identifiers 2903 and 2905 in his New General Catalogue; NGC 2905 now designates a luminous knot in the northeastern spiral arm.

NGC 5548 is a Type I Seyfert galaxy with a bright, active nucleus. This activity is caused by matter flowing onto a 65 million solar mass (M_☉) supermassive black hole at the core. Morphologically, this is an unbarred lenticular galaxy with tightly-wound spiral arms, while shell and tidal tail features suggest that it has undergone a cosmologically-recent merger or interaction event. NGC 5548 is approximately 245 million light years away and appears in the constellation Boötes. The apparent visual magnitude of NGC 5548 is approximately 13.3 in the V band.

<span class="mw-page-title-main">Eyes Galaxies</span> Pair of galaxies in the constellation Virgo

The Eyes Galaxies are a pair of galaxies about 52 million light-years away in the constellation Virgo. The pair are members of the string of galaxies known as Markarian's Chain.

NGC 4261 is an elliptical galaxy located around 100 million light-years away in the constellation Virgo. It was discovered April 13, 1784 by the German-born astronomer William Herschel. The galaxy is a member of its own somewhat meager galaxy group known as the NGC 4261 group, which is part of the Virgo Cluster.

<span class="mw-page-title-main">NGC 4536</span> Spiral galaxy in the constellation Virgo

NGC 4536 is an intermediate spiral galaxy in the constellation Virgo located about 10° south of the midpoint of the Virgo cluster. However, it is not considered a member of the cluster. Rather, it is a member of the M61 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster. The morphological classification in the De Vaucouleurs system is SAB(rs)bc, which indicates it is a weakly barred spiral galaxy with a hint of an inner ring structure plus moderate to loosely wound arms. It does not have a classical bulge around the nucleus.

NGC 4639 is a barred spiral galaxy located in the equatorial constellation of Virgo. It was discovered by German-born astronomer William Herschel on April 12, 1784. John L. E. Dreyer described it as "pretty bright, small, extended, mottled but not resolved, 12th magnitude star 1 arcmin to southeast". This is a relatively nearby galaxy, lying approximately 72 million light-years away from the Milky Way. It is a companion to NGC 4654, and the two appear to have interacted roughly 500 million years ago. NGC 4639 is a member of the Virgo Cluster.

NGC 4535 is a barred spiral galaxy located some 54 million light years from Earth in the constellation Virgo. It is a member of the Virgo Cluster of galaxies and is located 4.3° from Messier 87. The galactic plane of NGC 4535 is inclined by an angle of 43° to the line of sight from the Earth. The morphological classification of NGC 4535 in the De Vaucouleurs system is SAB(s)c, which indicates a bar structure across the core (SAB), no ring (s), and loosely wound spiral arms (c). The inner part of the galaxy has two spiral arms, which branch into multiple arms further away. The small nucleus is of type HII, meaning the spectrum resembles that of an H II region.

NGC 4451 is a spiral galaxy in the equatorial Virgo constellation. It was discovered at the Copenhagen Observatory on March 19, 1865 by Heinrich d'Arrest, who used an 11" refractor telescope. The galaxy is located at a distance of 85 million light years and is receding with a heliocentric radial velocity of 862 km/s. It is a member of the Virgo cluster of galaxies.

NGC 4203 is the New General Catalogue identifier for a lenticular galaxy in the northern constellation of Coma Berenices. It was discovered on March 20, 1787 by English astronomer William Herschel, and is situated 5.5° to the northwest of the 4th magnitude star Gamma Comae Berenices and can be viewed with a small telescope. The morphological classification of NGC 4203 is SAB0−, indicating that it has a lenticular form with tightly wound spiral arms and a weak bar structure at the nucleus.

NGC 1614 is the New General Catalogue identifier for a spiral galaxy in the equatorial constellation of Eridanus. It was discovered on December 29, 1885 by American astronomer Lewis Swift, who described it in a shorthand notation as: pretty faint, small, round, a little brighter middle. The nebula was then catalogued by Danish-Irish astronomer J. L. E. Drayer in 1888. When direct photography became available, it was noted that this galaxy displayed some conspicuous peculiarities. American astronomer Halton Arp included it in his 1966 Atlas of Peculiar Galaxies. In 1971, Swiss astronomer Fritz Zwicky described it as a "blue post-eruptive galaxy, compact patchy core, spiral plumes, long blue jet SSW".

NGC 1792 is a spiral galaxy located in the southern Columba constellation. It was discovered by Scottish astronomer James Dunlop on October 4, 1826. This galaxy is located at a distance of about 36.4 million light-years and is receding from the Milky Way with a heliocentric radial velocity of 1,208 km/s. NGC 1792 is a member of the NGC 1808 cluster of galaxies.

NGC 4424 is a spiral galaxy located in the equatorial constellation of Virgo. It was discovered February 27, 1865 by German astronomer Heinrich Louis d'Arrest. This galaxy is located at a distance of 13.5 million light years and is receding with a heliocentric radial velocity of 442 km/s. It has a morphological class of SB(s)a, which normally indicates a spiral galaxy with a barred structure (SB), no inner ring feature (s), and tightly-wound spiral arms (a). The galactic plane is inclined at an angle of 62° to the line of sight from the Earth. It is a likely member of the Virgo Cluster of galaxies.

NGC 3893 is a spiral galaxy located in the constellation Ursa Major. It is located at a distance of circa 50 million light years from Earth, which, given its apparent dimensions, means that NGC 3893 is about 70,000 light years across. It was discovered by William Herschel on February 9, 1788. NGC 3893 interacts with its satellite, NGC 3896.

NGC 536 is a barred spiral galaxy located in the constellation Andromeda. It is located at a distance of circa 200 million light-years from Earth, which, given its apparent dimensions, means that NGC 536 is about 180,000 light years across. It was discovered by William Herschel on September 13, 1784. It is a member of Hickson Compact Group 10, which also includes the galaxies NGC 529, NGC 531, and NGC 542. It belongs to the Perseus–Pisces Supercluster.

NGC 4294 is a barred spiral galaxy with flocculent spiral arms located about 55 million light-years away in the constellation Virgo. The galaxy was discovered by astronomer William Herschel on March 15, 1784 and is a member of the Virgo Cluster.

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.

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.

NGC 4302 is an edge-on spiral galaxy located about 55 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on April 8, 1784 and is a member of the Virgo Cluster.

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

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↑ Abazajian, Kevork N.; et al. (2009), "The Seventh Data Release of the Sloan Digital Sky Survey", The Astrophysical Journal Supplement Series, 182 (2): 543–558, arXiv: 0812.0649 , Bibcode:2009ApJS..182..543A, doi:10.1088/0067-0049/182/2/543, S2CID 14376651.
1 2 Voyer, E. N.; et al. (September 2014), "The GALEX Ultraviolet Virgo Cluster Survey (GUViCS). III. The ultraviolet source catalogs", Astronomy & Astrophysics, 569: A124, arXiv: 1405.4344 , Bibcode:2014A&A...569A.124V, doi:10.1051/0004-6361/201322511, S2CID 118455940, A124.
1 2 Haynes, Martha P.; et al. (July 2018), "The Arecibo Legacy Fast ALFA Survey: The ALFALFA Extragalactic H I Source Catalog", The Astrophysical Journal, 861 (1): 49, arXiv: 1805.11499 , Bibcode:2018ApJ...861...49H, doi: 10.3847/1538-4357/aac956 , 49.
1 2 Seligman, Courtney, "NGC Objects: NGC 4100 - 4149", Celestial Atlas, retrieved 2023-11-04.
1 2 Díaz-García, S.; et al. (October 2021), "Molecular gas and star formation within 12 strong galactic bars observed with IRAM-30 m", Astronomy & Astrophysics, 654: A135, arXiv: 2106.13099 , Bibcode:2021A&A...654A.135D, doi:10.1051/0004-6361/202140674, S2CID 235624019, A135.
1 2 3 4 Weiner, Benjamin J.; Williams, T. B.; van Gorkom, J. H.; Sellwood, J. A. (January 2001), "The Disk and Dark Halo Mass of the Barred Galaxy NGC 4123. I. Observations", The Astrophysical Journal, 546 (2): 916–930, arXiv: astro-ph/0008204 , Bibcode:2001ApJ...546..916W, doi:10.1086/318288, S2CID 13742393.
↑ Skrutskie, Michael F.; et al. (1 February 2006), "The Two Micron All Sky Survey (2MASS)", The Astronomical Journal, 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi: 10.1086/498708 , ISSN 0004-6256, S2CID 18913331.
↑ "NGC 4123", SIMBAD , Centre de données astronomiques de Strasbourg , retrieved 2023-11-03.
1 2 3 Weiner, Benjamin J.; et al. (January 2001), "The Disk and Dark Halo Mass of the Barred Galaxy NGC 4123. II. Fluid-Dynamical Models", The Astrophysical Journal, 546 (2): 931–951, arXiv: astro-ph/0008205 , Bibcode:2001ApJ...546..931W, doi:10.1086/318289, S2CID 119068977.
1 2 Kim, Suk; Rey, Soo-Chang; Jerjen, Helmut; Lisker, Thorsten; Sung, Eon-Chang; Lee, Youngdae; Chung, Jiwon; Pak, Mina; Yi, Wonhyeong; Lee, Woong (December 2014), "The Extended Virgo Cluster Catalog", The Astrophysical Journal Supplement, 215 (2): 22, arXiv: 1409.3283 , Bibcode:2014ApJS..215...22K, doi:10.1088/0067-0049/215/2/22, S2CID 119296675, 22.
↑ Lianou, S.; et al. (November 2019), "Dust properties and star formation of approximately a thousand local galaxies", Astronomy & Astrophysics, 631: A38, arXiv: 1906.02712 , Bibcode:2019A&A...631A..38L, doi:10.1051/0004-6361/201834553, S2CID 174801441, A38.
↑ Ulvestad, James S.; Ho, Luis C. (December 2002), "A Search for Active Galactic Nuclei in Sc Galaxies with H II Spectra", The Astrophysical Journal, 581 (2): 925–931, arXiv: astro-ph/0208460 , Bibcode:2002ApJ...581..925U, doi:10.1086/344442, S2CID 15482628.
↑ Dong, X. Y.; De Robertis, M. M. (March 2006), "Low-Luminosity Active Galaxies and Their Central Black Holes", The Astronomical Journal, 131 (3): 1236–1252, arXiv: astro-ph/0510694 , Bibcode:2006AJ....131.1236D, doi:10.1086/499334, S2CID 17630682.

NGC 4123

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