Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 712, Issue 1, Pages L103-L106Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/712/1/L103
Keywords
galaxies: dwarf; galaxies: individual (Pisces, Pegasus); Local Group
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Funding
- Alfred P. Sloan Foundation
- Participating Institutions
- National Science Foundation
- U.S. Department of Energy
- National Aeronautics and Space Administration
- Japanese Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- Royal Society
- Science and Technology Facilities Council of the UK
- NSF [AST-0807498, AST-0808043]
- Science and Technology Facilities Council [ST/H00243X/1, PP/C002229/1, PP/E001068/1, ST/H004157/1, ST/H001913/1, PP/E00105X/1, ST/H004165/1] Funding Source: researchfish
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0808043] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [807498] Funding Source: National Science Foundation
- STFC [ST/H004165/1, PP/E00105X/1, PP/C002229/1, PP/E001068/1, ST/H001913/1, ST/H004157/1] Funding Source: UKRI
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We report the discovery of two new Milky Way satellites in the neighboring constellations of Pisces and Pegasus identified in data from the Sloan Digital Sky Survey. Pisces II, an ultra-faint dwarf galaxy lies at the distance of similar to 180 kpc, some 15 degrees away from the recently detected Pisces I. Segue 3, an ultra-faint star cluster lies at the distance of 16 kpc. We use deep follow-up imaging obtained with the 4-m Mayall Telescope at Kitt Peak National Observatory to derive their structural parameters. Pisces II has a half-light radius of similar to 60 pc, while Segue 3 is 20 times smaller at only 3 pc.
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