Long-term Stellar Variability in the Galactic Centre Region
We report the detection of variable stars within a 11.5' x 11.5' region near the Galactic centre (GC) that includes the Arches and Quintuplet clusters, as revealed by the VISTA Variables in the Via Lactea (VVV) survey. There are 353 sources that show Ks-band variability, of which the large majority (81%) correspond to red giant stars, mostly in the asymptotic giant branch (AGB) phase. We analyze a population of 52 red giants with long-term trends that cannot be classified into the typical pulsating star categories. Distances and extinctions are calculated for 9 Mira variables, and we discuss the impact of the chosen extinction law on the derived distances. We also report the presence of 48 new identified young stellar object (YSO) candidates in the region.
Item Type | Article |
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Additional information | © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. |
Keywords | astro-ph.sr |
Date Deposited | 15 May 2025 13:56 |
Last Modified | 15 May 2025 13:56 |
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