Astronomy:NGC 2008
| NGC 2008 | |
|---|---|
 NGC 2008 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Pictor |
| Right ascension | 05h 35m 03s |
| Declination | -50° 58′ 00″ |
| Redshift | 0.034387 |
| Helio radial velocity | 10,309 km/s |
| Distance | 499 Mly (152.91 Mpc) |
| Apparent magnitude (B) | 14.64 |
| Characteristics | |
| Type | Sc |
| Size | 225,000 ly (estimated 68.91 kpc) |
| Apparent size (V) | 1.5' x 0.7' |
| Other designations | |
| PGC 17480, ESO 204-20, AM 0533-505 | |
NGC 2008 is a distant spiral galaxy located in the constellation Pictor. Its speed relative to the cosmic microwave background is 10,367 ± 11 km/s, which corresponds to a Hubble distance of 153 ± 11 Mpc (~499 million ly).[1] NGC 2008 was discovered by British astronomer John Herschel in 1834.[2] The luminosity class of NGC 2008 is III[1] with an apparent magnitude of 13.2.[3]
NGC 2008 is classified as a type Sc galaxy with a small central budge structure and open spiral arms.[4][5][6]
To date, four non-redshift measurements yield a distance of 135.750 ± 10.521 Mpc (~443 million ly), which is within the Hubble distance range. Note, however, that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database[3] calculates the diameter of a galaxy and that consequently the diameter of NGC 2008 could be approximately 77 kpc (~253,000 ly) if we used the Hubble distance to calculate it.[7]
According to Soares and his colleagues, NGC 2007 and NGC 2008 form a pair of galaxies. However, the Hubble distance of NGC 2007 is 67.57 ± 4.73 Mpc (~220 million ly). These two galaxies therefore form a purely optical pair.[2][8]
See also
External links
References
- ↑ 1.0 1.1 "By Name | NASA/IPAC Extragalactic Database". http://ned.ipac.caltech.edu/byname?objname=NGC+2008&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1.
- ↑ 2.0 2.1 "New General Catalog Objects: NGC 2000 - 2049". https://cseligman.com/text/atlas/ngc20.htm.
- ↑ 3.0 3.1 "Revised data from NGC/IC Catalogue from NGC 2000 to 2099". http://astrovalleyfield.ca/AstronomieCompl/NGC%20et%20autres/WolfgangS/N2000_exc_web.htm.
- ↑ information@eso.org. "Open Arms" (in en). https://www.esahubble.org/images/potw2006a/.
- ↑ Lazaro, Enrico de (2020-02-10). "Hubble Snaps Beautiful Image of NGC 2008 | Sci.News" (in en-US). https://www.sci.news/astronomy/hubble-image-spiral-galaxy-ngc-2008-08101.html.
- ↑ "Hubble Embraces Spiral With Open Arms - NASA Science" (in en-US). https://science.nasa.gov/missions/hubble/hubble-embraces-spiral-with-open-arms/.
- ↑ "NED Query Results for NGC 2008". https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+2008.
- ↑ "Southern Binary Galaxies - A Sample of Isolated Pairs". http://dx.doi.org/10.5270/esa-3tnwo2v.
Template:NGC objects:2000-2499
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