Astronomy:NGC 5749
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Short description: Open cluster in the constellation Lupus
| {{{name}}} | |
|---|---|
 NGC 5749 with DECaPS | |
| Observation data (J2000 epoch) | |
| Constellation | Lupus |
| 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] |
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
- ↑ 1.0 1.1 1.2 1.3 1.4 Cantat-Gaudin, T.; Anders, F. (January 2020). "Clusters and mirages: cataloguing stellar aggregates in the Milky Way". Astronomy & Astrophysics 633: 22. doi:10.1051/0004-6361/201936691. A99. Bibcode: 2020A&A...633A..99C.
- ↑ "NASA/IPAC Extragalactic Database". Results for NGC 5749. http://nedwww.ipac.caltech.edu/.
- ↑ 3.0 3.1 3.2 Piskunov, A. E. et al. (January 2008). "Tidal radii and masses of open clusters". Astronomy and Astrophysics 477 (1): 165–172. doi:10.1051/0004-6361:20078525. Bibcode: 2008A&A...477..165P.
- ↑ 4.0 4.1 Medhi, Biman J.; Tamura, Motohide (April 2013). "Cluster membership probability: polarimetric approach". Monthly Notices of the Royal Astronomical Society 430 (2): 1334–1343. doi:10.1093/mnras/sts714. Bibcode: 2013MNRAS.430.1334M.
- ↑ "NGC 5749". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5749.
- ↑ 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. doi:10.1051/0004-6361:20042124. Bibcode: 2007A&A...462..621V.
- ↑ 7.0 7.1 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
- NGC 5749 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
14h 48m 54s, −54° 29′ 52″
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