NGC 4473 (other designations - UGC 7631 , MCG 2-32-93 , ZWG 70.125 , VCC 1231 , PGC 41228 ) is an elliptical galaxy ( E5 ) in the constellation Veronica's Hair .
| NGC 4473 | |
|---|---|
| Galaxy | |
 NGC 4473, image from the Hubble telescope | |
| Research history | |
| Discoverer | William Herschel |
| opening date | April 8, 1784 |
| Designations | NGC 4473 , UGC 7631 , MCG 2-32-93 , ZWG 70.125 , VCC 1231 , PGC 41228 |
| Observational data ( Age J2000.0 ) | |
| Constellation | Veronica's hair |
| Right ascension | |
| Declination | |
| Visible dimensions | 4.5 '× 2.5' |
| Apparent magnitude m V | 10,2 |
| Photographic magnitude m B | 11.2 |
| Specifications | |
| Type of | E5 |
| Radial velocity | 2244 km / s |
| Redshift | +0.007485 ± 0.000060 |
| Distance | 49.6 million St. years old |
| Angular position | 94 ° |
| Surface brightness | 12.9 |
| Radius | 69 thousand St. years old |
This object is one of those listed in the original edition of the New General Catalog . The galaxy was discovered by W. Herschel on April 8, 1784.
The galaxy belongs to the Virgo Cluster , and also forms part of the so-called Markaryan chain [1] .
Content
Research
In the course of research conducted at Yale University using the telescope of the National Observatory of Optical Astronomy , strands of warm gas (mostly ionized hydrogen ) were discovered, forming a jumper between the galaxy NGC 4438 and the galaxy M86 .
It is assumed that the filaments were formed as a result of a high-speed collision of galaxies (M86 is much heavier than NGC 4438). As a result of such a collision, interstellar gas warms up, which prevents the formation of stable gas clusters, from which new stars could later form [2] .
In the center of the galaxy is a supermassive black hole with a mass of about 100 million M ☉ [3] [4] .
See also
- List of Messier objects
- New shared directory
Notes
- ↑ Markarian, BE Physical chain of galaxies in the Virgo cluster and its dynamic instability (Eng.) // The Astronomical Journal : journal. - IOP Publishing , 1961. - Vol. 66 . - P. 555-557 . - .
- ↑ Douglas Isbell. Big Galaxy Collisions Can Stunt Star Formation Education & Public Engagement (US & Chile) . National Observatory of Optical Astronomy (October 7, 2008). Date of treatment April 17, 2014.
- ↑ List of black hole candidates . www.johnstonsarchive.net . Date of appeal September 23, 2017.
- ↑ NGC 4473 Fact Sheet - StarDate's Black Hole Encyclopedia . blackholes.stardate.org . Date of appeal September 23, 2017.
Links
- Information in English and French from the original “ New General Catalog ”
- Information (Eng.) From the Revised New General Catalog
- SIMBAD
- VizieR (English)
- NASA / IPAC Extragalactic Database
- NGC 4473 Publication List