University of Hertfordshire

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From the same journal

By the same authors

Variable Stars in the Quintuplet stellar cluster with the VVV Survey

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Documents

  • C. Navarro Molina
  • J. Borissova
  • M. Catelan
  • J. Alonso-García
  • E. Kerins
  • R. Kurtev
  • P. W. Lucas
  • N. Medina
  • D. Minniti
  • I. Dékány
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Original languageEnglish
Number of pages12
Pages (from-to)1180-1191
JournalMonthly Notices of the Royal Astronomical Society
Journal publication date21 Oct 2016
Volume462
Issue2
Early online date20 Jul 2016
DOIs
Publication statusPublished - 21 Oct 2016

Abstract

The Quintuplet cluster is one of the most massive star clusters in the Milky Way, situated very close to the Galactic center. We present a new search for variable stars in the vicinity of the cluster, using the five-year database of the Vista Variables in the Via Lactea (VVV) ESO Public Survey in the near-infrared. A total of 7586 objects were identified in the zone around $2'$ from the cluster center, using 55 $K_S$-band epochs. Thirty-three stars show $K_S$-band variability, 24 of them being previously undiscovered. Most of the variable stars found are slow/semiregular variables, long-period variables of the Mira type, and OH/IR stars. In addition, a good number of our candidates show variations in a rather short timescale. We also propose four Young Stellar Object (YSO) candidates, which could be cluster members.

Notes

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society, © : 2016 C Navarro Molina et al., published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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