UGC 934 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Pisces |
Right ascension | 01h 23m 28.3s |
Declination | +30° 47′ 04.1″ |
Redshift | 0.034927 |
Heliocentric radial velocity | 10,471 km/s |
Distance | 469 Mly (143.8 Mpc) |
Group or cluster | Abell 1960 |
Apparent magnitude (V) | 0.14 |
Apparent magnitude (B) | 0.19 |
Characteristics | |
Type | S? |
Size | 285,000 ly |
Apparent size (V) | 1.7' x 0.6' |
Other designations | |
LEDA 5085, VV 341a, MCG +05-04-042, NSA 129346, 2MASX J012328.30+304703.9 |
UGC 934, known as PGC 5085, is a large spiral galaxy about 470 million light-years away from the solar system. [1] It is located in the constellation of Pisces and about 285,000 thousand light-years in diameter. [1] [2]
With its neighboring galaxy PGC 212740, they together form the galaxy pair, VV 341. [3] They are also known as Arp 70, the 70th number in the Atlas of Peculiar Galaxies, created by Halton Arp. [4] In this class, they fall under spiral galaxies that have a small high-surface brightness companions.
According to Laurikainen, Salo & Aparicio, UGC 934 and the neighboring galaxy are examples of M51- type galaxies, i.e. a system where a large galaxy with two spiral arms is seen interacting with a smaller companion. [5] It is likely the interaction with PGC 212740 would result UGC 934 having grand design spiral arms. [6]
The SIMBAD database and by Lacerda et al. (2020) classifies UGC 934 as a Seyfert type 2 galaxy with an active galactic nucleus. [7] [8]
A giant H II region in the galaxy has been discovered in one of its spiral arms. It has a luminosity of (7.5 ± 0.5) x 1040 ergs−1. Additionally, the rate of star formation in UGC 934 is 0.59 ± 0.04 M⊙ yr−1. [6]
Two supernovae have been discovered in UGC 934 so far, SN 2003lc [9] and SN 2005ly. [10]
SN 2003lc, was an apparent supernova located 32.1" west and 10.7" north of its nucleus. It was discovered by two astronomers, T. Puckett and L. Cox in December 2003, via an unfiltered CCD frame but no supernova classification was confirmed. [11]
SN 2005ly was discovered by T. Puckett and G. Sostero in December 2005, using another unfiltered CCD frame observed with the Puckett Observatory supernova patrol telescope in Ellijay, Georgia. It was located 5".4 east and 18".2 south. Unlike SN 2003lc, SN 2005ly was classified a type-IIn supernova by astronomers from Harvard-Smithsonian Center for Astrophysics and the National Optical Astronomy Observatory who obtained its spectrum. They confirmed it has Balmer emission lines, having both a narrow and wide component, and a blue continuum indicating a relative young age for the spectrum. [12]
The Whirlpool Galaxy, also known as Messier 51a (M51a) or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy. It is 31 million lightyears away and 23.58 kiloparsecs (76,900 ly) in diameter.
SN 2005cs was a supernova in the spiral galaxy M51, known as the Whirlpool Galaxy. It was a type II-P core-collapse supernova, discovered June 28, 2005 by Wolfgang Kloehr, a German amateur astronomer. The event was positioned at an offset of 15″ west and 78″ south of the galactic nucleus of M51. Based on the data, the explosion was inferred to occur 2.8 days before discovery. It was considered under-luminous for a supernova of its type, releasing an estimated 3×1050 erg in energy.
NGC 2207 and IC 2163 are a pair of colliding spiral galaxies about 80 million light-years away in the constellation Canis Major. NGC 2207 was discovered by British astronomer John Herschel on 24 January 1835, while IC 2163 was discovered by Herbert Howe on 11 February 1898.
NGC 2608 is a barred spiral galaxy located 93 million light-years away in the constellation Cancer. It is 62,000 light-years across, and about 60% of the width of the Milky Way. It is considered a grand design spiral galaxy and is classified as SB(s)b, meaning that the galaxy's arms wind moderately around the prominent central bar.
NGC 3432 is an edge-on spiral galaxy that can be found in the northern constellation of Leo Minor. It was discovered by German-British astronomer William Herschel on March 19, 1787. This galaxy is located at a distance of 40 million light-years (12.3 Mpc) from the Milky Way. It is interacting with UGC 5983, a nearby dwarf galaxy, and features tidal filaments and intense star formation. Because of these features, it was listed in Halton Arp's Atlas of Peculiar Galaxies.
NGC 3504 is a barred spiral galaxy in the constellation Leo Minor. It has a Hubble distance corresponding to 88 million light-years and was discovered by William Herschel in 1785.
UGC 9425 are a pair of interacting galaxies located in the constellation of Boötes, comprising PGC 52283 and PGC 87675, both disk-type galaxies. It is located 468 million light-years from Earth and catalogued as Arp 241 by Halton Arp.
NGC 5829 is a spiral galaxy located in the constellation Boötes. It is 281 million light-years away from Earth and was discovered by astronomer, Edouard Stephan in May 1882.
SN 1994I is a Type Ic supernova discovered on April 2, 1994 in the Whirlpool Galaxy by amateur astronomers Tim Puckett and Jerry Armstrong of the Atlanta Astronomy Club. Type Ic supernova are a rare type of supernova that result from the explosion of a very massive star that has shed its outer layers of hydrogen and helium. The explosion results in a highly luminous burst of radiation that then dims over the course of weeks or months. SN 1994I was a relatively nearby supernova, and provided an important addition to the then small collection of known Type Ic supernova. Very early images were captured of SN 1994I, as two high school students in Oil City, Pennsylvania serendipitously took images of the Whirlpool Galaxy using the 30-inch telescope at Leuschner Observatory on March 31, 1994, which included SN 1994I just after it began to brighten.
NGC 4490, also known as the Cocoon Galaxy, is a barred spiral galaxy in the constellation Canes Venatici. William Herschel discovered it in 1788. It is known to be of the closest interacting/merging galactic system. The galaxy lies at a distance of 25 million light years from Earth making it located in the local universe. It interacts with its smaller companion NGC 4485 and as a result is a starburst galaxy. NGC 4490 and NGC 4485 are collectively known in the Atlas of Peculiar Galaxies as Arp 269. The two galaxies has already made their closest approach and are rushing away from each other. It's been discovered that NGC 4490 has a double nucleus.
NGC 521, also occasionally referred to as PGC 5190 or UGC 962, is a barred spiral galaxy located approximately 224 million light-years from the Solar System in the constellation Cetus. It was discovered on 8 October 1785 by astronomer William Herschel.
NGC 5468 is an intermediate spiral galaxy located in the constellation Virgo. It is located at a distance of about 140 million light-years from Earth, which, given its apparent dimensions, means that NGC 5468 is about 110,000 light-years across. It was discovered by William Herschel on 5 March 1785.
NGC 6907 is a spiral galaxy located in the constellation Capricornus. It is located at a distance of about 120 million light-years from Earth, which, given its apparent dimensions, means that NGC 6907 is about 115,000 light-years across. It was discovered by William Herschel on July 12, 1784. The total infrared luminosity of the galaxy is 1011.03 L☉, and thus it is categorised as a luminous infrared galaxy.
NGC 5996 is a barred spiral galaxy in the constellation Serpens. The galaxy lies about 125 million light years away from Earth, which means, given its apparent dimensions, that NGC 5996 is approximately 65,000 light years across. It was discovered by William Herschel on March 21, 1784.
NGC 4157 is a spiral galaxy in the constellation Ursa Major. The galaxy lies about 55 million light years away from Earth, which means, given its apparent dimensions, that NGC 4157 is approximately 125,000 light years across. It was discovered by William Herschel on March 9, 1788.
UGC 4457 known as PGC 23935, is a barred spiral galaxy, containing an active galactic nucleus in the Cancer constellation. It is located 500 million light-years away from the Solar System and has a diameter of 290,000 light-years, making it slightly more massive compared to the Milky Way. The galaxy is moving away at a speed of 11,162 kilometers per second.
UGC 4653 known as Arp 195, is a trio of interacting galaxies located 763 million light-years away from the solar system in the Lynx constellation. The galaxies are being distorted through gravitational interactions with each other. The first known reference for this object, was in 1959 where B.A. Vorontsov-Vel'yaminov compiled it inside the Vorontsov-Vel'yaminov Interacting galaxies, as VV 243.
NGC 3746 is a large barred spiral galaxy with a ring structure located in the Leo constellation. It is located 449 million light-years from the Solar System and has an approximate diameter of 165,000 light-years. NGC 3746 was discovered by Ralph Copeland on 9 February 1874 with subsequent observations made by Hermann Kobold, Lawrence Parsons and John Louis Emil Dreyer.
NGC 3509 known as Arp 335, is a barred spiral galaxy located in the constellation Leo. It is located 340 million light-years from the Solar System. NGC 3509 was discovered by astronomer William Herschel on December 30, 1786.
UGC 9684 is a barred spiral galaxy with a ring structure in the Boötes constellation. It is located 250 million light-years from the Solar System and has an approximate diameter of 90,000 light-years.