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How stellar rotation shapes the colour-magnitude diagram of the massive intermediate-age star cluster NGC 1846

Kamann, S.; Bastian, N.; Gossage, S; Baade, D; Cabrera-Ziri, I.; Da Costa, Gary; De Mink, Selma; Georgy, C.; Giesers, B; Goettgens, F; Hilker, M; Husser, T-O; Lardo, C.; Larsen, S. S.; Mackey, Douglas; Martocchia, S.; Mucciarelli, Alessio; Platais, Imants; Roth, Martin M.; Salaris, M; Yong, David


We present a detailed study of stellar rotation in the massive 1.5 Gyr old cluster NGC 1846 in the Large Magellanic Cloud. Similar to other clusters at this age, NGC 1846 shows an extended main-sequence turn-off (eMSTO), and previous photometric studies have suggested it could be bimodal. In this study, we use MUSE integral-field spectroscopy to measure the projected rotational velocities (vsin i) of around 1400 stars across the eMSTO and along the upper main sequence of NGC 1846. We measure...[Show more]

CollectionsANU Research Publications
Date published: 2020
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stz3583
Access Rights: Open Access


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