NGC 6670

Last updated
NGC 6670
Hubble Interacting Galaxy NGC 6670 (2008-04-24).jpg
NGC 6670 as seen by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Draco
Right ascension 18h 33m 33.4s (NGC 6670E) - 18h 33m 33.7s (NGC 6670W) [1]
Declination +59° 53′ 16″ (NGC 6670E) - +59° 53′ 23″ (NGC 6670W) [1]
Redshift 8512 km/s [2]
Distance 401 million [3]
Apparent magnitude  (V)14.3 [4]
Apparent magnitude  (B)15.1 [5]
Characteristics
Type S [5]
Size1.0 [6]
Other designations
IRAS 18329+5950, NGC 6670A, UGC 11284, MCG +10-26-044, PGC 62033, CGCG 301-31 [3]

NGC 6670 is a pair of interacting galaxies within the Draco constellation, which lie around 401 million light-years from Earth. [3] Its shape resembles a leaping dolphin. [7] NGC 6670 was discovered by Lewis A. Swift on July 31, 1886. [1] NGC 6670 is a combination of two colliding disc galaxies which are known as NGC 6670E and NGC 6670W. The galaxy is 100 billion times brighter than the Sun. [8] The galaxies have already collided once before and they are now moving towards each other again nearing a second collision. [9] Its apparent magnitude is 14.3, [4] its size is 1.0 arc minutes. [6]

Contents

NGC 6670E

NGC 6670E (also known as NGC 6670-1 and NGC 6670B) is a disc galaxy on the north-eastern side of NGC 6670. It has mostly been destroyed by its collision with NGC 6670W. It has bright nuclear region with a luminosity of 18 L⊙/Mbol due to a large amount of star formation. Its star formation efficiency is at least four times higher than the Milky Way disc, and is approaching the starburst phase. This large amount of star formation is likely to be caused by its collision with NGC 6670W. To the south-east of the nucleus there is a bright and fuzzy area caused by dust extinction or a large concentration of blue stars. NGC 6670E is in-front of NGC 6670W and they are moving towards each other. The movement of the H I region of this galaxy has been disrupted by its collision with NGC 6670W. [10]

NGC 6670W

NGC 6670W (also known as NGC 6670-2 and NGC 6670A) is a disc galaxy on the south-western side of NGC 6670. It forms the larger part of NGC 6670. It has remained mostly intact after its collision with NGC 6670E. Its nuclear region is slightly dimmer than NGC 6670E, being measured at 11 L⊙/Mbol, but this number still indicates a higher than normal level of star production. Both the western and eastern sides of the disc are significantly curved. The H I region of NGC 6670W is a rotating ring. The western end of the galaxy has a stronger radio continuum peak indicating that it may be a recent star forming region. [10]

Related Research Articles

<span class="mw-page-title-main">Galaxy</span> Large gravitationally bound system of stars and interstellar matter

A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a thousand stars, to the largest galaxies known – supergiants with one hundred trillion stars, each orbiting its galaxy's center of mass. Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies.

<span class="mw-page-title-main">NGC 6240</span> Galaxy merger remnant in the constellation Ophiuchus

NGC 6240, also known as the Starfish Galaxy, is a nearby ultraluminous infrared galaxy (ULIRG) in the constellation Ophiuchus. It was discovered by French astronomer Édouard Stephan on 12 July 1871.

<span class="mw-page-title-main">Starburst galaxy</span> Galaxy undergoing an exceptionally high rate of star formation

A starburst galaxy is one undergoing an exceptionally high rate of star formation, as compared to the long-term average rate of star formation in the galaxy, or the star formation rate observed in most other galaxies.

<span class="mw-page-title-main">Sculptor Galaxy</span> Intermediate spiral galaxy in the constellation Sculptor

The Sculptor Galaxy is an intermediate spiral galaxy in the constellation Sculptor. The Sculptor Galaxy is a starburst galaxy, which means that it is currently undergoing a period of intense star formation.

<span class="mw-page-title-main">NGC 1569</span> Galaxy in the constellation Camelopardalis

NGC 1569 is a dwarf irregular galaxy in Camelopardalis. The galaxy is relatively nearby and consequently, the Hubble Space Telescope can easily resolve the stars within the galaxy. The distance to the galaxy was previously believed to be only 2.4 Mpc. However, in 2008 scientists studying images from Hubble calculated the galaxy's distance at nearly 11 million light-years away, about 4 million light-years farther than previously thought, meaning it is a member of the IC 342 group of galaxies.

<span class="mw-page-title-main">NGC 6745</span> Galaxy in the constellation Lyra

NGC 6745 is an irregular galaxy about 206 million light-years away in the constellation Lyra. It was discovered by French astronomer Édouard Stephan on 24 July 1879.

<span class="mw-page-title-main">Interacting galaxy</span> Galaxies with interacting gravitational fields

Interacting galaxies are galaxies whose gravitational fields result in a disturbance of one another. An example of a minor interaction is a satellite galaxy disturbing the primary galaxy's spiral arms. An example of a major interaction is a galactic collision, which may lead to a galaxy merger.

<span class="mw-page-title-main">NGC 1232</span> Galaxy in the constellation Eridanus

NGC 1232, also known as the Eye of God Galaxy is an intermediate spiral galaxy about 60 million light-years away in the constellation Eridanus. It was discovered by German-British astronomer William Herschel on 20 October 1784.

<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.

<span class="mw-page-title-main">NGC 6872</span> Galaxy in the constellation Pavo

NGC 6872, also known as the Condor Galaxy, is a large barred spiral galaxy of type SB(s)b pec in the constellation Pavo. It is 212 million light-years (65 Mpc) from Earth. NGC 6872 is interacting with the lenticular galaxy IC 4970, which is less than one twelfth as large. The galaxy has two elongated arms with a diameter based on ultraviolet light of over 522,000 light-years (160,000 pc), and a D25.5 isophotal diameter of over 717,000 light-years (220,000 pc), making it the largest known spiral galaxy. It was discovered on 27 June 1835 by English astronomer John Herschel.

<span class="mw-page-title-main">Galaxy merger</span> Merger whereby at least two galaxies collide

Galaxy mergers can occur when two galaxies collide. They are the most violent type of galaxy interaction. The gravitational interactions between galaxies and the friction between the gas and dust have major effects on the galaxies involved, but the exact effects of such mergers depend on a wide variety of parameters such as collision angles, speeds, and relative size/composition, and are currently an extremely active area of research. Galaxy mergers are important because the merger rate is a fundamental measurement of galaxy evolution and also provides astronomers with clues about how galaxies grew into their current forms over long stretches of time.

<span class="mw-page-title-main">NGC 1672</span> Galaxy in the constellation Dorado

NGC 1672 is a barred spiral galaxy located in the constellation Dorado. It was discovered by the astronomer James Dunlop on November 5, 1826. It was originally unclear whether it was a member of the Dorado Group, with some sources finding it to be a member and other sources rejecting its membership. However, recent tip of the red-giant branch (TRGB) measurements indicate that NGC 1672 is located at the same distance as other members, suggesting it is indeed a member of the Dorado Group.

<span class="mw-page-title-main">NGC 660</span> Polar-ring galaxy in the constellation Pisces

NGC 660 is a peculiar and unique polar-ring galaxy located approximately 45 million light-years from Earth in the Pisces constellation. It is the only such galaxy having, as its host, a "late-type lenticular galaxy". It was probably formed when two galaxies collided a billion years ago. However, it may have first started as a disk galaxy that captured matter from a passing galaxy. This material could have, over time, become "strung out" to form a rotating ring.

<span class="mw-page-title-main">NGC 2623</span> Interacting galaxy in the constellation Cancer

NGC 2623(also known as ARP 243) is an interacting galaxy located around 263 million light-years away in the constellation Cancer. It was discovered on 19 January 1885 by French astronomer Édouard Jean-Marie Stephan.

<span class="mw-page-title-main">NGC 6810</span> Galaxy in the constellation of Pavo

NGC 6810 is a spiral galaxy approximately 87 million light-years away from Earth in the constellation of Pavo.

<span class="mw-page-title-main">NGC 7469</span> Galaxy located in the constellation Pegasus

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.

<span class="mw-page-title-main">NGC 541</span> Galaxy in the constellation Cetus

NGC 541 is a lenticular galaxy located in the constellation Cetus. It is located at a distance of about 230 million light years from Earth, which, given its apparent dimensions, means that NGC 541 is about 130,000 light years across. It was discovered by Heinrich d'Arrest on October 30, 1864. It is a member of the Abell 194 galaxy cluster and is included in the Atlas of Peculiar Galaxies in the category galaxies with nearby fragments. NGC 541 is a radio galaxy of Fanaroff–Riley class I, also known as 3C 40A.

<span class="mw-page-title-main">NGC 1142</span> Interacting and distorted spiral galaxy in the constellation Cetus

NGC 1142 is a distorted spiral galaxy in the constellation of Cetus. It is located about 370 million light years away from Earth, which means, given its apparent dimensions, that NGC 1142 is approximately 170,000 light years across. It is a type 2 Seyfert galaxy. It interacts with the elliptical galaxy NGC 1141.

<span class="mw-page-title-main">NGC 7679</span> Galaxy in the constellation Pisces

NGC 7679 is a lenticular galaxy with a peculiar morphology in the constellation Pisces. It is located at a distance of about 200 million light years from Earth, which, given its apparent dimensions, means that NGC 7679 is about 60,000 light years across. It was discovered by Heinrich d'Arrest on September 23, 1864. The total infrared luminosity is 1011.05 L☉, and thus it is categorised as a luminous infrared galaxy. NGC 7679 is both a starburst galaxy and a Seyfert galaxy.

<span class="mw-page-title-main">NGC 2444</span> Galaxy in the constellation Lynx

NGC 2444 is a peculiar lenticular galaxy in the constellation Lynx. The galaxy lies about 135 million light years away from Earth, which means, given its apparent dimensions, that NGC 2444 is approximately 50,000 light years across. It was discovered by Édouard Stephan on January 18, 1877. The galaxy interacts with another galaxy, NGC 2445, whose shape is distorted and has large star formation regions.

References

  1. 1 2 3 "NGC 6670 (= PGC 62033)". cseligman. Retrieved 5 November 2017.
  2. ↑ "NGC 6670". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 5 November 2017.
  3. 1 2 3 "Galaxy NGC 6670". DSO. Retrieved 5 November 2017.
  4. 1 2 "The galaxy NGC 6670". In the sky. Retrieved 5 November 2017.
  5. 1 2 "Object: NGC 6670-1 (*)". SEDS. Retrieved 5 November 2017.
  6. 1 2 "Detailed Information for Object No. 2". NASA/IPAC. Retrieved 5 November 2017.
  7. ↑ "Leaping Dolphin". Amazingspace. Retrieved 5 November 2017.
  8. ↑ "NGC 6670". ESA. 24 April 2008. Retrieved 5 November 2017.
  9. ↑ "NGC 6670, a pair of overlapping galaxies". Anne's Astronomy. 2012-03-04. Retrieved 5 November 2017.
  10. 1 2 Wang, Wei-Hao; Lo, K. Y.; Gao, Yu; Gruendl, Robert A. (2001). "Gas Distribution and Starburst Activity in the Widely Separated Interacting Galaxy Pair NGC 6670". The Astronomical Journal. 122 (1): 140–162. arXiv: astro-ph/0103280 . Bibcode:2001AJ....122..140W. doi:10.1086/321112. S2CID   13900373.


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.