IC 5063 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Indus |
Right ascension | 20h 52m 02.15s |
Declination | −57° 04′ 06.7″ |
Redshift | 0.01126748±0.0005 [1] |
Heliocentric radial velocity | 3,402±6 km/s [2] |
Galactocentric velocity | 3,342±6 km/s [2] |
Distance | 160.8 ± 11.3 Mly (49.30 ± 3.45 Mpc) [2] |
Apparent magnitude (V) | 13.60 [3] |
Apparent magnitude (B) | 12.92 [4] |
magnitude (J) | 9.705 [5] |
magnitude (H) | 9.024 [5] |
magnitude (K) | 8.750 [5] |
Characteristics | |
Type | S0 or Sa [2] |
Size | 46.24 kpc [2] |
Other designations | |
IC 5063, PGC 65600 |
IC 5063 is a post-merger system [6] and is a Seyfert 2 galaxy. [7] This active galactic nucleus (AGN) produces on the one hand interactions with the interstellar medium (ISM) and large radio outflows. On the other hand, the accretion disk around the supermassive black hole, produces crepuscular rays. [8] [9] It is the first discovered case of a black hole disk producing such rays, [9] but circumstellar disks around some young stars are already known to produce similar shadows. [10] The crepuscular rays were first noted in an image by Judy Schmidt, who posted her image of IC 5063 on the social media platform Twitter. [11]
A smaller galaxy, called IC 5064, is located to the south of IC 5063. These two galaxies have a similar redshift and form a pair of galaxies. [12]
IC 5063 was studied with ESO and CTIO instruments in 1991. This showed that the system is a post-merger system and has an extended-emission line region (EELR) in the galaxy nucleus. EELRs usually show strong emission due to doubly-ionized oxygen [O III]. In this work for the first time the X-shape of the emission was noted. [6] The first radio observation of the galaxy was published in 1998. This included radio continuum and H I region mapping with the Australia Telescope Compact Array. The radio emission is aligned with the emission by [O III]. [7] The oxygen emission of [O III] was also imaged in higher resolution with Hubble WFPC2 and published in 2003. [13] In 2021 VLT/MUSE observations were published, including IC 5063. This showed that the [O III] extends up to around 10 kpc on each side. [14] Modelling has shown that the jet is expanding in a gaseous disk in the nucleus, destroying and displacing clouds in the central region. [15]
Various other molecular and atomic emission lines associated with the outflow were detected with various telescopes. [16] [17] [18] [19] [20] [21] A molecular outflow was first detected in carbon monoxide (CO) in 2013 with the Atacama Pathfinder Experiment. The researchers suggested that the jet is accelerating molecules. [16] In 2014 this was confirmed, by showing that the jet is accelerating hydrogen gas molecules (H2) in a gaseous disk. This was based on spectroscopic observations with VLT/ISAAC. The researchers measured a speed of 600 km/s relative to the disk. [17] More detailed observations with ALMA showed a fast outflow of cold gas imaged in carbon monoxide (CO). The entire jet has a size of 1 kpc and CO showed a speed of 650 km/s at 0.5 kpc. [18] A later study, also using ALMA, found speeds of 800 km/s and a molecular outflow mass of more than 1.2 × 106 M☉. [19] Near-infrared observations with VLT/SINFONI showed signatures of molecular and atomic gas that are distorted by the radio jet. [20] The galaxy was observed with JWST MIRI. This observation has shown that the gas sometimes exceeds the local escape velocity. Bow shocks in H2 show that the entire jet is more extended than seen in radio. [21] A giant loop of low ionized sulfur and nitrogen was observed perpendicular to the radio jet. [22]
The crepuscular rays, extending more than 11 kpc, were discovered in 2020 with Hubble observations. These are located perpendicular to the emission line region and the radio jets. Bright rays in the middle of the dark regions might indicate gaps in the obscuring material. From the shape of the dark rays it was estimated that the AGN torus has a wide opening angle of ≥137°. [9] The rays could also be explained by LINER-like outflows and bubbles that expand in a lateral direction, as is seen in one bubble in IC 5063. [22]
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.
NGC 1808 is a barred spiral galaxy located in the southern constellation of Columba, about two degrees to the south and east of Gamma Caeli. It was discovered on 10 May 1826 by Scottish astronomer James Dunlop, who described it as a "faint nebula". The galaxy is a member of the NGC 1808 group, which is part of the larger Dorado Group.
3C 305, also known as IC 1065, is a lenticular galaxy located in the constellation Draco. The galaxy is located 577 million light-years away from Earth. It has an active galactic nucleus and is classified as a Seyfert 2 galaxy. This galaxy was discovered by American astronomer Lewis Swift on April 7th, 1888.
Markarian 231 is a Type-1 Seyfert galaxy that was discovered in 1969 as part of a search of galaxies with strong ultraviolet radiation. It contains the nearest known quasar. Markarian 231 is located about 581 million light years away from Earth, in the constellation of Ursa Major.
NGC 4388 is an active spiral galaxy in the equatorial constellation of Virgo. It was discovered April 17, 1784 by Wilhelm Herschel. This galaxy is located at a distance of 57 million light years and is receding with a radial velocity of 2,524km/s. It is one of the brightest galaxies of the Virgo Cluster due to its luminous nucleus. NGC 4388 is located 1.3° to the west of the cluster center, which translates to a projected distance of ≈400 kpc.
NGC 3862 is an elliptical galaxy located 300 million light-years away in the constellation Leo. Discovered by astronomer William Herschel on April 27, 1785, NGC 3862 is an outlying member of the Leo Cluster.
NGC 612 is a lenticular galaxy in the constellation of Sculptor located approximately 388 million light-years from Earth. It is a type II Seyfert galaxy and thus has an active galactic nucleus. NGC 612 has been identified as an extremely rare example of a non-elliptical radio galaxy, hosting one of the nearest powerful FR-II radio sources.
NGC 7469 is an intermediate spiral galaxy in the constellation of Pegasus. NGC 7469 is located about 200 million light-years away from Earth, which means, given its apparent dimensions, that NGC 7469 is approximately 90,000 light-years across. It was discovered by William Herschel on November 12, 1784.
NGC 7130 is a spiral galaxy located in the constellation Piscis Austrinus. It is located at a distance of about 220 million light years from Earth, which, given its apparent dimensions, means that NGC 7130 is about 100,000 light years across. It was discovered by John Herschel on September 25, 1834, and discovered independently by Lewis Swift on September 17, 1897. The location of the galaxy given in the New General Catalogue was off by 30 arcminutes in declination from the location of the galaxy.
NGC 985 is a ring galaxy in the constellation of Cetus. It is located about 550 million light years away from Earth, which means, given its apparent dimensions, that NGC 985 is approximately 160,000 light years across. It was discovered by Francis Leavenworth in 1886. It is a type 1 Seyfert galaxy.
NGC 1386 is a spiral galaxy located in the constellation Eridanus. It is located at a distance of circa 53 million light years from Earth, which, given its apparent dimensions, means that NGC 1386 is about 50,000 light years across. It is a Seyfert galaxy, the only one in Fornax Cluster.
NGC 4278 is an elliptical galaxy located in the constellation Coma Berenices. It is located at a distance of circa 55 million light years from Earth, which, given its apparent dimensions, means that NGC 4278 is about 65,000 light years across. It was discovered by William Herschel on March 13, 1785. NGC 4278 is part of the Herschel 400 Catalogue and can be found about one and 3/4 of a degree northwest of Gamma Comae Berenices even with a small telescope.
III Zw 2 is a Seyfert 1 galaxy located in the Pisces constellation. It has a redshift of 0.089 and is notable as the first of its kind to exhibit a superluminal jet.
Markarian 273 is a galaxy merger located in the constellation Ursa Major. It is located at a distance of about 500 million light years from Earth, which, given its apparent dimensions, means that Markarian 273 is about 130,000 light years across. It is an ultraluminous infrared galaxy and a Seyfert galaxy.
NGC 2110 is a lenticular galaxy located in the constellation Orion. It is located at a distance of about 120 million light years from Earth, which, given its apparent dimensions, means that NGC 2110 is about 90,000 light years across. It was discovered by William Herschel on October 5, 1785. It is a Seyfert galaxy.
An extended emission-line region (EELR) is a giant interstellar cloud ionized by the radiation of an active galactic nucleus (AGN) inside a galaxy or photons produced by the shocks associated with the radio jets. An EELR can appear as a resolved cloud in relative nearby galaxies and as narrow emission lines in more distant galaxies.
4C +29.30 is an elliptical galaxy located in Cancer constellation. Its redshift is 0.064840 which corresponds to a light travel time of 850 million light-years from Earth. It is a wide-angled tailed radio galaxy (WAT) and a Seyfert galaxy.
IRAS 09104+4109 is a galaxy located in the constellation Lynx. With a redshift of 0.440797, the light travel time for this galaxy, corresponds to 4.8 billion light-years from Earth. It is the brightest cluster galaxy in MACS J0913.7+4056 galaxy cluster and classified as a hyperluminous infrared galaxy.
PKS 1345+125 known as PKS 1345+12 and 4C +12.50, is an ultraluminous infrared galaxy (ULIG) with an active galactic nucleus, located in the constellation Boötes. With a redshift of 0.121740, the galaxy is located 1.7 billion light-years from Earth.
3C 459 known as IRAS 23140+0348, is a radio galaxy located in the constellation Pisces. It is located 2.74 billion light years from Earth and is classified as a Seyfert 2 and LINER galaxy.