Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 733, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/733/2/L43
Keywords
Galaxy: disk; Galaxy: structure; stars: distances; stars: late-type
Categories
Funding
- FONDAP Center for Astrophysics
- BASAL CATA Center for Astrophysics and Associated Technologies
- CONICYT [32080016]
- NASA
- NSF
- Science and Technology Facilities Council [ST/G002622/1] Funding Source: researchfish
- STFC [ST/G002622/1] Funding Source: UKRI
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We use the clump giants of the disk as standard candles calibrated from Hipparcos parallaxes in order to map their distribution with two new near-infrared surveys of the Galactic plane: UKIDSS-GPS and VISTA Variables in the Via Lactea (VVV). We explore different selection cuts of clump giants. We conclude that there is an edge of the stellar disk of the Milky Way at R = 13.9 +/- 0.5 kpc along various lines of sight across the Galaxy. The effect of the warp is considered, taking fields at different longitudes and above and below the plane. We demonstrate that the edge of the stellar disk of the Milky Way can now be mapped in the near-infrared in order to test different models, and to establish our own place within the Galaxy.
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