New Galactic star clusters discovered in the disc area of the VVVX survey

J. Borissova, V. D. Ivanov, P. W. Lucas, R. Kurtev, J. Alonso-Garcia, S. Ramírez Alegría, D. Minniti, D. Froebrich, M. Hempel, N. Medina, A. N. Chené, M. A. Kuhn

Resultado de la investigación: Article

3 Citas (Scopus)

Resumen

The 'VISTA Variables in the Vía Láctea eXtended (VVVX)' ESO Public Survey is a nearinfrared photometric sky survey that covers nearly 1700 deg2 towards the Galactic disc and bulge. It is well-suited to search for newopen clusters, hidden behind dust and gas. The pipeline processed and calibrated KS-band tile images of 40 per cent of the disc area covered by VVVX was visually inspected for stellar overdensities. Then, we identified cluster candidates by examination of the composite JHKS colour images. The colour-magnitude diagrams of the cluster candidates are constructed. Whenever possible the Gaia DR2 parameters are used to calculate the mean proper motions, radial velocities, reddening and distances. We report the discovery of 120 new infrared clusters and stellar groups. Approximately half of them (47 per cent) are faint, compact, highly reddened, and they seem to be associated with other indicators of recent star formation, such as nearby Young Stellar Objects, Masers, HII regions or bubbles. The preliminary distance determinations allow us to trace the clusters up to 4.5 kpc, but most of the cluster candidates are centred at 2.2 kpc. The mean proper motions of the clusters show that in general they follow the disc motion of the Galaxy.

Idioma originalEnglish
Páginas (desde-hasta)3902-3920
Número de páginas19
PublicaciónMonthly Notices of the Royal Astronomical Society
Volumen481
N.º3
DOI
EstadoPublished - 11 dic 2018

Huella dactilar

star clusters
bubble
diagram
dust
proper motion
gas
color-magnitude diagram
tiles
masers
European Southern Observatory
radial velocity
star formation
bubbles
examination
galaxies
color
composite materials
indicator
young
parameter

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Borissova, J., Ivanov, V. D., Lucas, P. W., Kurtev, R., Alonso-Garcia, J., Ramírez Alegría, S., ... Kuhn, M. A. (2018). New Galactic star clusters discovered in the disc area of the VVVX survey. Monthly Notices of the Royal Astronomical Society, 481(3), 3902-3920. https://doi.org/10.1093/mnras/sty2354
Borissova, J. ; Ivanov, V. D. ; Lucas, P. W. ; Kurtev, R. ; Alonso-Garcia, J. ; Ramírez Alegría, S. ; Minniti, D. ; Froebrich, D. ; Hempel, M. ; Medina, N. ; Chené, A. N. ; Kuhn, M. A. / New Galactic star clusters discovered in the disc area of the VVVX survey. En: Monthly Notices of the Royal Astronomical Society. 2018 ; Vol. 481, N.º 3. pp. 3902-3920.
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abstract = "The 'VISTA Variables in the V{\'i}a L{\'a}ctea eXtended (VVVX)' ESO Public Survey is a nearinfrared photometric sky survey that covers nearly 1700 deg2 towards the Galactic disc and bulge. It is well-suited to search for newopen clusters, hidden behind dust and gas. The pipeline processed and calibrated KS-band tile images of 40 per cent of the disc area covered by VVVX was visually inspected for stellar overdensities. Then, we identified cluster candidates by examination of the composite JHKS colour images. The colour-magnitude diagrams of the cluster candidates are constructed. Whenever possible the Gaia DR2 parameters are used to calculate the mean proper motions, radial velocities, reddening and distances. We report the discovery of 120 new infrared clusters and stellar groups. Approximately half of them (47 per cent) are faint, compact, highly reddened, and they seem to be associated with other indicators of recent star formation, such as nearby Young Stellar Objects, Masers, HII regions or bubbles. The preliminary distance determinations allow us to trace the clusters up to 4.5 kpc, but most of the cluster candidates are centred at 2.2 kpc. The mean proper motions of the clusters show that in general they follow the disc motion of the Galaxy.",
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author = "J. Borissova and Ivanov, {V. D.} and Lucas, {P. W.} and R. Kurtev and J. Alonso-Garcia and {Ram{\'i}rez Alegr{\'i}a}, S. and D. Minniti and D. Froebrich and M. Hempel and N. Medina and Chen{\'e}, {A. N.} and Kuhn, {M. A.}",
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Borissova, J, Ivanov, VD, Lucas, PW, Kurtev, R, Alonso-Garcia, J, Ramírez Alegría, S, Minniti, D, Froebrich, D, Hempel, M, Medina, N, Chené, AN & Kuhn, MA 2018, 'New Galactic star clusters discovered in the disc area of the VVVX survey', Monthly Notices of the Royal Astronomical Society, vol. 481, n.º 3, pp. 3902-3920. https://doi.org/10.1093/mnras/sty2354

New Galactic star clusters discovered in the disc area of the VVVX survey. / Borissova, J.; Ivanov, V. D.; Lucas, P. W.; Kurtev, R.; Alonso-Garcia, J.; Ramírez Alegría, S.; Minniti, D.; Froebrich, D.; Hempel, M.; Medina, N.; Chené, A. N.; Kuhn, M. A.

En: Monthly Notices of the Royal Astronomical Society, Vol. 481, N.º 3, 11.12.2018, p. 3902-3920.

Resultado de la investigación: Article

TY - JOUR

T1 - New Galactic star clusters discovered in the disc area of the VVVX survey

AU - Borissova, J.

AU - Ivanov, V. D.

AU - Lucas, P. W.

AU - Kurtev, R.

AU - Alonso-Garcia, J.

AU - Ramírez Alegría, S.

AU - Minniti, D.

AU - Froebrich, D.

AU - Hempel, M.

AU - Medina, N.

AU - Chené, A. N.

AU - Kuhn, M. A.

PY - 2018/12/11

Y1 - 2018/12/11

N2 - The 'VISTA Variables in the Vía Láctea eXtended (VVVX)' ESO Public Survey is a nearinfrared photometric sky survey that covers nearly 1700 deg2 towards the Galactic disc and bulge. It is well-suited to search for newopen clusters, hidden behind dust and gas. The pipeline processed and calibrated KS-band tile images of 40 per cent of the disc area covered by VVVX was visually inspected for stellar overdensities. Then, we identified cluster candidates by examination of the composite JHKS colour images. The colour-magnitude diagrams of the cluster candidates are constructed. Whenever possible the Gaia DR2 parameters are used to calculate the mean proper motions, radial velocities, reddening and distances. We report the discovery of 120 new infrared clusters and stellar groups. Approximately half of them (47 per cent) are faint, compact, highly reddened, and they seem to be associated with other indicators of recent star formation, such as nearby Young Stellar Objects, Masers, HII regions or bubbles. The preliminary distance determinations allow us to trace the clusters up to 4.5 kpc, but most of the cluster candidates are centred at 2.2 kpc. The mean proper motions of the clusters show that in general they follow the disc motion of the Galaxy.

AB - The 'VISTA Variables in the Vía Láctea eXtended (VVVX)' ESO Public Survey is a nearinfrared photometric sky survey that covers nearly 1700 deg2 towards the Galactic disc and bulge. It is well-suited to search for newopen clusters, hidden behind dust and gas. The pipeline processed and calibrated KS-band tile images of 40 per cent of the disc area covered by VVVX was visually inspected for stellar overdensities. Then, we identified cluster candidates by examination of the composite JHKS colour images. The colour-magnitude diagrams of the cluster candidates are constructed. Whenever possible the Gaia DR2 parameters are used to calculate the mean proper motions, radial velocities, reddening and distances. We report the discovery of 120 new infrared clusters and stellar groups. Approximately half of them (47 per cent) are faint, compact, highly reddened, and they seem to be associated with other indicators of recent star formation, such as nearby Young Stellar Objects, Masers, HII regions or bubbles. The preliminary distance determinations allow us to trace the clusters up to 4.5 kpc, but most of the cluster candidates are centred at 2.2 kpc. The mean proper motions of the clusters show that in general they follow the disc motion of the Galaxy.

KW - Galaxy: disk

KW - Galaxy: open clusters and associations: general

KW - Infrared: stars

UR - http://www.scopus.com/inward/record.url?scp=85054262767&partnerID=8YFLogxK

U2 - 10.1093/mnras/sty2354

DO - 10.1093/mnras/sty2354

M3 - Article

AN - SCOPUS:85054262767

VL - 481

SP - 3902

EP - 3920

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -

Borissova J, Ivanov VD, Lucas PW, Kurtev R, Alonso-Garcia J, Ramírez Alegría S y otros. New Galactic star clusters discovered in the disc area of the VVVX survey. Monthly Notices of the Royal Astronomical Society. 2018 dic 11;481(3):3902-3920. https://doi.org/10.1093/mnras/sty2354