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NGC 1866: First Spectroscopic Detection of Fast-rotating Stars in a Young LMC Cluster

Dupree, A. K.; Dotter, Aaron; Johnson, C. I.; Marino, Anna; Milone, Antonino; Bailey III, J. I.; Crane, J.D; Mateo, Mario; Olszewski, Edward W

Description

High-resolution spectroscopic observations were taken of 29 extended main-sequence turnoff (eMSTO) stars in the young (~200 Myr) Large Magellanic Cloud (LMC) cluster, NGC 1866, using the Michigan/Magellan Fiber System and MSpec spectrograph on the Magellan-Clay 6.5 m telescope. These spectra reveal the first direct detection of rapidly rotating stars whose presence has only been inferred from photometric studies. The eMSTO stars exhibit Hα emission (indicative of Be-star decretion disks),...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
URI: http://hdl.handle.net/1885/218257
Source: Astrophysical Journal Letters
DOI: 10.3847/2041-8213/aa85dd

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