Artículos de revistas
In-situ star formation in the outskirts of the large magellanic cloud: Gaia DR2 confirmation
Fecha
2018-07-20Registro en:
The Astrophysical Journal Letters, 862:L9 (4pp), 2018 July 20.
2041-8205
10.3847/2041-8213/aad183
Autor
Casetti-Dinescu, Dana I.
Girard, Terrence M.
Moni Bidin, Christian
Zhang, Lan
Méndez Bussard, René Alejandro
Vieira, Katherine
Korchagin, Vladimir I.
Van Altena, William F.
Institución
Resumen
We explore the Gaia data release 2 (DR2) proper motions of six young, main-sequence stars, members of the Large Magellanic Cloud (LMC) reported by Moni Bidin et al. These stars are located in the outskirts of the disk, between 7 degrees and 13 degrees from the LMC's center where there is very low H I content. Gaia DR2 proper motions confirm that four stars formed locally, in situ, while two are consistent with being expelled via dynamical interactions from inner, more gas-rich regions of the LMC. This finding establishes that recent star formation occurred in the periphery of the LMC, where thus far only old populations were known.