FSR 1735
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Globular cluster data from FSR 1735 |
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| Recording with the ESO-NTT | |
| AladinLite | |
| Constellation | altar |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 16 h 52 m 10.6 s |
| declination | -47 ° 03 ′ 29 ″ |
| Appearance | |
| Physical data | |
| Affiliation | Milky Way |
| distance | (30,000 ± 300) ly ((9100 ± 100) pc ) |
| Dimensions | 65,000 M ☉ |
| Tidal radius | 86 " |
| Metallicity [Fe / H] | −0.8 ± 0.1 |
| history | |
| discovery | Froebrich, Scholz & Raftery |
| Discovery date | 2007 |
| Catalog names | |
FSR 1735 is a globular cluster in the constellation Altar at a distance of around 30,000 light years from the sun and around 10,000 light years from the galactic center .
The cluster was found by Dirk Froebrich, Aleks Scholz and CJ Raftery during a systematic search for star clusters in the 2MASS catalog and bears the number 1735 in their catalog. Subsequent observations with ESO's New Technology Telescope (NTT) on La Silla (Chile) showed a compact, massive star cluster in the inner region of our Milky Way with around 100,000 stars.
FSR 1735 is located relatively close to the galactic center and only around 950 light years from the galactic plane, so it belongs to the galactic bulge . In this area there is a high extinction , which is why the cluster was not discovered in previous searches in the optical range, but only at infrared wavelengths. The age of FSR 1735 is not known, but for a globular cluster it is typically more than 10 billion years.
Since it is the third globular cluster discovered in 2MASS data, it is sometimes referred to as 2MASS-GC03 .
Web links
Individual evidence
- ↑ a b c d e f g D. Froebrich, H. Meusinger, A. Scholz: FSR 1735 - a new globular cluster candidate in the inner Galaxy . In: Monthly Notices of the Royal Astronomical Society Vol. 377 (2007), L54, doi : 10.1111 / j.1745-3933.2007.00302.x
- ↑ D. Froebrich, A. Scholz, CJ Raftery: A systematic survey for infrared star clusters with | b | <20 ° using 2MASS . In: Monthly Notices of the Royal Astronomical Society Vol. 374 (2007), 399, doi : 10.1111 / j.1365-2966.2006.11148.x