TY - JOUR
T1 - Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - III. Horizontal branch morphology
AU - Wagner-Kaiser, R.
AU - Mackey, Dougal
AU - Sarajedini, Ata
AU - Cohen, Roger E.
AU - Geisler, Doug
AU - Yang, Soung Chul
AU - Grocholski, Aaron J.
AU - Cummings, Jeffrey D.
N1 - Publisher Copyright:
© 2017 The Author(s).
PY - 2018/3/1
Y1 - 2018/3/1
N2 - We leverage new high-quality data from Hubble Space Telescope program GO-14164 to explore the variation in horizontal branch morphology among globular clusters in the Large Magellanic Cloud (LMC). Our new observations lead to photometry with a precision commensurate with that available for the Galactic globular cluster population. Our analysis indicates that, once metallicity is accounted for, clusters in the LMC largely share similar horizontal branch morphologies regardless of their location within the system. Furthermore, the LMC clusters possess, on average, slightly redder morphologies than most of the inner halo Galactic population; we find, instead, that their characteristics tend to be more similar to those exhibited by clusters in the outer Galactic halo. Our results are consistent with previous studies, showing a correlation between horizontal branch morphology and age.
AB - We leverage new high-quality data from Hubble Space Telescope program GO-14164 to explore the variation in horizontal branch morphology among globular clusters in the Large Magellanic Cloud (LMC). Our new observations lead to photometry with a precision commensurate with that available for the Galactic globular cluster population. Our analysis indicates that, once metallicity is accounted for, clusters in the LMC largely share similar horizontal branch morphologies regardless of their location within the system. Furthermore, the LMC clusters possess, on average, slightly redder morphologies than most of the inner halo Galactic population; we find, instead, that their characteristics tend to be more similar to those exhibited by clusters in the outer Galactic halo. Our results are consistent with previous studies, showing a correlation between horizontal branch morphology and age.
KW - Galaxies: star clusters: general
KW - Globular clusters: general
KW - Magellanic Clouds
KW - Stars: horizontal branch
UR - http://www.scopus.com/inward/record.url?scp=85040254290&partnerID=8YFLogxK
U2 - 10.1093/mnras/stx3061
DO - 10.1093/mnras/stx3061
M3 - Article
SN - 0035-8711
VL - 474
SP - 4358
EP - 4365
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -