Abstract
Kim 1 & 2 are two new star clusters discovered in the Stromlo Missing Satellite Survey. Kim 1, located at a heliocentric distance of 19.8 +/- 0.9 kpc, features an extremely low total luminosity (Mv = 0.3 +/- 0.5 mag) and low star concentration. Together with the large ellipticity (epsilon = 0.42 +/- 0.10) and irregular isophotes, these properties suggest that Kim 1 is an intermediate mass star cluster being stripped by the Galactic tidal field. Kim 2 is a rare ultrafaint outer halo globular cluster located at a heliocentric distance of 104.7 +/- 4.1 kpc. The cluster exhibits evidence of significant mass loss such as extra-tidal stars and mass-segregation. Kim 2 is likely to follow an orbit confined to the peripheral region of the Galactic halo, and/or to have formed in a dwarf galaxy that was later accreted into the Galactic halo.
| Original language | English |
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| Title of host publication | Proceedings of the International Astronomical Union: The General Assembly of Galaxy Halos: Structure, Origin and Evolution |
| Editors | Angela Bragaglia, Magda Arnaboldi, Marina Rejkuba, Donatella Romano |
| Place of Publication | United Kingdom |
| Publisher | Cambridge University Press |
| Pages | 314-315 |
| Edition | 1st |
| ISBN (Print) | 978-1107138193 |
| DOIs | |
| Publication status | Published - 2016 |
| Event | International Astronomical Union IAUS 317: The General Assembly of Galaxy Halos: Structure, Origin and Evolution - Honolulu, United States Duration: 1 Jan 2015 → … |
Conference
| Conference | International Astronomical Union IAUS 317: The General Assembly of Galaxy Halos: Structure, Origin and Evolution |
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| Period | 1/01/15 → … |
| Other | August 3-7, 2015 |