NGC 2525
| NGC 2525 | |
|---|---|
| File:NGC2525 - HST - Heic2018b.tif NGC 2525 in 2018, imaged by the Hubble Space Telescope with SN2018gv on Lower Left | |
| Observation data (J2000 epoch) | |
| Constellation | Puppis |
| Right ascension | 08h 05m 38.0503s[1] |
| Declination | −11° 25′ 37.213″[1] |
| Redshift | 0.005270 ± 0.000005 [1] |
| Heliocentric radial velocity | 1,580 ± 1 km/s[1] |
| Distance | 71 Mly (21.9 Mpc)[2] |
| Apparent magnitude (V) | 11.6 [3] |
| Characteristics | |
| Type | SB(s)c [1] |
| Size | ~46,200 ly (14.16 kpc) (estimated)[1] |
| Apparent size (V) | 2.9′ × 1.9′[1] |
| Other designations | |
| IRAS 08032-1117, UGCA 135, MCG -02-21-004, PGC 22721[1] | |
NGC 2525 is a barred spiral galaxy located in the constellation Puppis. It is located at a distance of about 70 million light years from Earth, which, given its apparent dimensions, means that NGC 2525 is about 46,000 light years across. It was discovered by William Herschel on February 23, 1791.[4][5]
The galaxy has a bar and two main spiral arms with high surface brightness. HII regions are observed in the arms. The brightest stars of the galaxy have apparent magnitude around 22. Its nucleus is small and bright.[6] In the centre of the galaxy is predicted to lie a supermassive black hole whose mass is estimated to be between 1.1 and 44 million solar masses, based on the spiral arm pitch angle.[7][8]
SN 2018gv
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One supernova has been observed in NGC 2525, SN 2018gv. It was discovered on by Kōichi Itagaki on 15 January 2018 at magnitude 16.5,[9] and it was identified spectrographically as a Type Ia supernova 10 to 15 days before maximum.[10] The supernova was also observed by ATLAS on 2018 January 14.5 UT at magnitude 18.1.[11] It reached a peak magnitude of 12.8. ESA/Hubble released a video of the supernova in October 2020.[12][13]
See also
[edit | edit source]References
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- ^ Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
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External links
[edit | edit source]- NGC 2525 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- NGC 2525 on SIMBAD
