Long-term stellar variability in the Galactic Centre region

C. N. Molina, J. Borissova, M. Catelan, P. W. Lucas, N. Medina, C. Contreras Peña, R. Kurtev, D. Minniti

Resultado de la investigación: Article

2 Citas (Scopus)

Resumen

We report the detection of variable stars within a 11.5 arcmin × 11.5 arcmin region near the Galactic Centre that includes the Arches and Quintuplet clusters, as revealed by the VISTA Variables in the Vía Láctea survey. There are 353 sources that show KS-band variability, of which the large majority (81 per cent) correspond to red giant stars, mostly in the asymptotic giant branch phase. We analyse 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 nine 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 candidates in the region.

Idioma originalEnglish
Páginas (desde-hasta)5567-5586
Número de páginas20
PublicaciónMonthly Notices of the Royal Astronomical Society
Volumen482
N.º4
DOI
EstadoPublished - 1 feb 2019

Huella dactilar

extinction
red giant stars
Mira variables
arches
variable stars
arch
trends
stars
detection
long-term trend
young

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Molina, C. N., Borissova, J., Catelan, M., Lucas, P. W., Medina, N., Contreras Peña, C., ... Minniti, D. (2019). Long-term stellar variability in the Galactic Centre region. Monthly Notices of the Royal Astronomical Society, 482(4), 5567-5586. https://doi.org/10.1093/mnras/sty3041
Molina, C. N. ; Borissova, J. ; Catelan, M. ; Lucas, P. W. ; Medina, N. ; Contreras Peña, C. ; Kurtev, R. ; Minniti, D. / Long-term stellar variability in the Galactic Centre region. En: Monthly Notices of the Royal Astronomical Society. 2019 ; Vol. 482, N.º 4. pp. 5567-5586.
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Molina, CN, Borissova, J, Catelan, M, Lucas, PW, Medina, N, Contreras Peña, C, Kurtev, R & Minniti, D 2019, 'Long-term stellar variability in the Galactic Centre region', Monthly Notices of the Royal Astronomical Society, vol. 482, n.º 4, pp. 5567-5586. https://doi.org/10.1093/mnras/sty3041

Long-term stellar variability in the Galactic Centre region. / Molina, C. N.; Borissova, J.; Catelan, M.; Lucas, P. W.; Medina, N.; Contreras Peña, C.; Kurtev, R.; Minniti, D.

En: Monthly Notices of the Royal Astronomical Society, Vol. 482, N.º 4, 01.02.2019, p. 5567-5586.

Resultado de la investigación: Article

TY - JOUR

T1 - Long-term stellar variability in the Galactic Centre region

AU - Molina, C. N.

AU - Borissova, J.

AU - Catelan, M.

AU - Lucas, P. W.

AU - Medina, N.

AU - Contreras Peña, C.

AU - Kurtev, R.

AU - Minniti, D.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - We report the detection of variable stars within a 11.5 arcmin × 11.5 arcmin region near the Galactic Centre that includes the Arches and Quintuplet clusters, as revealed by the VISTA Variables in the Vía Láctea survey. There are 353 sources that show KS-band variability, of which the large majority (81 per cent) correspond to red giant stars, mostly in the asymptotic giant branch phase. We analyse 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 nine 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 candidates in the region.

AB - We report the detection of variable stars within a 11.5 arcmin × 11.5 arcmin region near the Galactic Centre that includes the Arches and Quintuplet clusters, as revealed by the VISTA Variables in the Vía Láctea survey. There are 353 sources that show KS-band variability, of which the large majority (81 per cent) correspond to red giant stars, mostly in the asymptotic giant branch phase. We analyse 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 nine 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 candidates in the region.

KW - Cataclysmic variables

KW - Galaxy: Centre

KW - Galaxy: Stellar content

KW - Protostars

KW - Stars: AGB and post-AGB

KW - Stars: Variables: General

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M3 - Article

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JO - Monthly Notices of the Royal Astronomical Society

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Molina CN, Borissova J, Catelan M, Lucas PW, Medina N, Contreras Peña C y otros. Long-term stellar variability in the Galactic Centre region. Monthly Notices of the Royal Astronomical Society. 2019 feb 1;482(4):5567-5586. https://doi.org/10.1093/mnras/sty3041