2MASS-GC02 explained
| 2MASS-GC02 |
| Class: | IV |
| Epoch: | J2000 |
| Constellation: | Sagittarius |
| Ra: | [1] |
| Dist Ly: | 16.0 kly
(4.9 kpc) |
| Appmag V: | 24.60 |
| Absmag V: | −4.86 |
| Radius Arcminsec: | 0.95′ × 0.95′[2] |
| Metal Fe: | −1.08[3] |
| Names: | Hurt 2 |
2MASS-GC02, also known as Hurt 2, is a globular cluster at a distance of about 16 thousand light-years from Earth in the constellation Sagittarius. It was discovered in 2000 by Joselino Vasquez together with globular cluster 2MASS-GC01 and a spiral galaxy 2MASXI J0730080-220105, and confirmed by a team of astronomers under the leadership of R. J. Hurt at 2MASS.[2]
The globular cluster 2MASS-GC02 is not in the visible portion of the electromagnetic spectrum, due to interstellar extinction, but was spotted in infrared light. It is located at a distance of 10.4 thousand light years from the center of the Milky Way.[2] Due to its trajectory, it has a negative radial velocity meaning it is approaching the Solar System, but its radial velocity is unclear. The radial velocity was originally put at −238 km/s,[4] but a newer analysis determined it to be −87 km/s; a 150 km/s difference.[5]
Further reading
- Discovery paper
- Hurt . Robert L. . Jarrett . Tom H. . Kirkpatrick . J. Davy . Cutri . Roc M. . Schneider . Stephen E. . Skrutskie . Mike . Van Driel . Willem . 2000 . Serendipitous 2MASS Discoveries near the Galactic Plane: A Spiral Galaxy and Two Globular Clusters . . 120 . 4 . 1876–1883 . astro-ph/0006262 . 2000AJ....120.1876H . 10.1086/301549 . 45767385.
External links
Notes and References
- NAME 2MASS-GC02. 15 January 2017.
- Web site: 2MASS-GC02, Hurt 2. 15 January 2016.
- Web site: A Galactic Globular Clusters Database: NGC 6540. 15 January 2017.
- 10.1093/mnras/sty2997. Mean proper motions, space orbits, and velocity dispersion profiles of Galactic globular clusters derived from Gaia DR2 data. 2019. Baumgardt. H.. Hilker. M.. Sollima. A.. Bellini. A.. Monthly Notices of the Royal Astronomical Society. 482. 4. 5138–5155. 1811.01507.
- 10.3847/1538-3881/ac0888. Spectroscopic Observations of Obscured Populations in the Inner Galaxy: 2MASS-GC02, Terzan 4, and the 200 km s−1 stellar peak. 2021. Kunder. Andrea. Crabb. Riley E.. Debattista. Victor P.. Koch-Hansen. Andreas J.. Huhmann. Brianna M.. The Astronomical Journal. 162. 3. 86. 2106.02647. 2021AJ....162...86K. 235358083 . free .
