NGC 5749
| NGC 5749 | |
|---|---|
 NGC 5749 with DECaPS | |
| Observation data (J2000 epoch) | |
| Right ascension | 14h 48m 49.(0)s[1] |
| Declination | −54° 30′ 0(7)″[2] |
| Distance | 3,548 ly (1,087.9 pc)[1] |
| Apparent magnitude (V) | 11.23 |
| Apparent dimensions (V) | 16.7′[1] |
| Physical characteristics | |
| Mass | 20.8+24.0 −11.2 M☉[3] M☉ |
| Radius | 11.7 ± 2.9 ly (3.6 ± 0.9 pc)[3] (tidal) |
| Estimated age | 27.0 Myr[4] |
| Other designations | NGC 5749, Cr 287, ESO 176-SC 004[5] |
| Associations | |
| Constellation | Lupus |
NGC 5749 is an open cluster of stars positioned near the southwest border of the southern constellation of Lupus. It is located at a distance of 3,548 light years from the Sun.[1] This is a poorly populated cluster that shows a low level of concentration;[6] the Trumpler class is IV1p.[7] There are 112 stars brighter than magnitude 14.4 within an angular radius of ~15′ of the cluster center, but only about 30% of these are members.[7] NGC 5749 is 27[4] million years old with a tidal radius of 11.7 light years and a mass of ~21 M☉.[3] Polarization measurements suggest there is a dust cloud within the cluster.[1]
References
[edit]- ^ a b c d e Cantat-Gaudin, T.; Anders, F. (January 2020). "Clusters and mirages: cataloguing stellar aggregates in the Milky Way". Astronomy & Astrophysics. 633: 22. arXiv:1911.07075. Bibcode:2020A&A...633A..99C. doi:10.1051/0004-6361/201936691. S2CID 208138247. A99.
- ^ "NASA/IPAC Extragalactic Database". Results for NGC 5749. Retrieved 2007-04-06.
- ^ a b c Piskunov, A. E.; et al. (January 2008). "Tidal radii and masses of open clusters". Astronomy and Astrophysics. 477 (1): 165–172. Bibcode:2008A&A...477..165P. doi:10.1051/0004-6361:20078525.
- ^ a b Medhi, Biman J.; Tamura, Motohide (April 2013). "Cluster membership probability: polarimetric approach". Monthly Notices of the Royal Astronomical Society. 430 (2): 1334–1343. arXiv:1212.6840. Bibcode:2013MNRAS.430.1334M. doi:10.1093/mnras/sts714.
- ^ "NGC 5749". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-12-28.
- ^ Vergne, M. M.; et al. (February 2007). "Optical multicolor polarization observations in the region of the open cluster NGC 5749". Astronomy and Astrophysics. 462 (2): 621–626. Bibcode:2007A&A...462..621V. doi:10.1051/0004-6361:20042124. hdl:11336/44582.
- ^ a b Claria, Juan J.; Lapasset, E. (October 1992). "New Color-Magnitude Diagrams and Basic Parameters of the Open Cluster NGC 5749". Acta Astronomica. 42: 343–353. Bibcode:1992AcA....42..343C.
External links
[edit]- NGC 5749 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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