NGC 6902
NGC 6902 is an unbarred spiral galaxy located in the southern constellation of Sagittarius at an approximate distance of 124 million light-years (38.0 Mpc). NGC 6902 was discovered on September 2, 1836 by English astronomer John Herschel. In his New General Catalogue, Danish astronomer J. L. E. Dreyer described it as faint, considerably small, round, brighter middle. It is a member of the small NGC 6092 group of galaxies; the LGG 434 group.
The morphological classification of NGC 6902 is SA(r)b, indicating an unbarred spiral galaxy (SA) with an inner ring (r) and somewhat tightly wound arms (b). As the two arms extend outward, they transition into a complex system of filamentary arms. The galaxy has an angular size of 3.55′ × 2.69′ in the optical band. The galactic plane is inclined at an angle of 38±5° to the line of sight from the Earth. NGC 6902 has a high abundance of neutral hydrogen; about three times greater than a typical galaxy of this class. The ring structure is undergoing extensive star formation. Although classed as unbarred, there is a small bar of stars inside the ring.
One supernova has been observed in NGC 6902: SN 2024uwq (type Ic-BL, mag. 17.4).
Gallery
-
NGC 6902 by GALEX -
Center of NGC 6902 by Very Large Telescope
See also
References
- ^ "NGC 6902 Caught by SPECULOOS". www.eso.org. Retrieved 25 February 2019.
- ^ "ESO's Ganymede Telescope Captures Its First-Light Image: NGC 6902". SciNews. February 26, 2019. Retrieved 2024-03-06.
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ De Vaucouleurs, Gerard; et al. (1991). Third Reference Catalogue of Bright Galaxies. Bibcode:1991rc3..book.....D.
- ^ Meyer, M. J.; et al. (June 2004). "The HIPASS catalogue - I. Data presentation". Monthly Notices of the Royal Astronomical Society. 350 (4): 1195–1209. arXiv:astro-ph/0406384. Bibcode:2004MNRAS.350.1195M. doi:10.1111/j.1365-2966.2004.07710.x. S2CID 10336076.
- ^ Gil de Paz, Armando; Boissier, Samuel; Madore, Barry F.; Seibert, Mark; et al. (December 2007). "The GALEX Ultraviolet Atlas of Nearby Galaxies". The Astrophysical Journal Supplement Series. 173 (2): 185–255. arXiv:astro-ph/0606440. Bibcode:2007ApJS..173..185G. doi:10.1086/516636. S2CID 119085482.
- ^ Paturel, G.; et al. (December 2003). "HYPERLEDA. I. Identification and designation of galaxies". Astronomy and Astrophysics. 412: 45–55. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411.
- ^ "NGC 6902". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-02-25.
- ^ de Lazaro, Enrico (February 9, 2021). "MUSE Sees Star-Forming Regions in NGC 6902". SciNews. Retrieved 2024-03-06.
- ^ Frommert, Hartmut. "NGC 6902". Students for the Exploration and Development of Space (SEDS). Retrieved 2024-03-06.
- ^ Seligman, Courtney. "NGC Objects: NGC 6900 - 6949". Celestial Atlas. Retrieved 2024-03-06.
- ^ Gallagher, J. S. (September 1979). "Optical studies of H I-rich southern galaxies. I. The supergiant spiral NGC 6902". Astronomical Journal. 84: 1281–1292. Bibcode:1979AJ.....84.1281G. doi:10.1086/112540.
- ^ "SN 2024uwq". Transient Name Server. IAU. Retrieved 9 September 2024.
External links
- "Results for object NGC 6902 (NGC 6902)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2020-12-12.
Media related to NGC 6902 at Wikimedia Commons
