The metal content of the bulge globular cluster NGC 6528

M. Zocali, B. Barbuy, V. Hill, S. Ortolani, A. Renzini, E. Bica, Y. Momany, L. Pasquini, D. Minniti, R. M. Rich

Resultado de la investigación: Article

26 Citas (Scopus)

Resumen

High resolution spectra of five stars in the bulge globular cluster NGC 6528 were obtained at the 8m VLT UT2-Kueyen telescope with the UVES spectrograph. Out of the five stars, two of them showed evidence of binarity. The target stars belong to the horizontal and red giant branch stages, at 4000 < feff < 4800 K. Multiband V, I, J, H, Ks photometry was used to derive initial effective temperatures and gravities. The main purpose of this study is the determination of metallicity and elemental ratios for this template bulge cluster, as a basis for the fundamental calibration of metal-rich populations. The present analysis provides a metallicity [Fe/H] = -0.1 ± 0.2 and the α-elements O, Mg and Si, show [α/Fe] =+0.1, whereas Ca and Ti are around the solar value or below, resulting in an overall metallicity Z ≈ Z.

Idioma originalEnglish
Páginas (desde-hasta)507-516
Número de páginas10
PublicaciónAstronomy and Astrophysics
Volumen423
N.º2
DOI
EstadoPublished - ago 2004

Huella dactilar

globular clusters
metallicity
gravity
calibration
stars
metal
metals
temperature
spectrographs
photometry
templates
telescopes
gravitation
high resolution
analysis

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Zocali, M., Barbuy, B., Hill, V., Ortolani, S., Renzini, A., Bica, E., ... Rich, R. M. (2004). The metal content of the bulge globular cluster NGC 6528. Astronomy and Astrophysics, 423(2), 507-516. https://doi.org/10.1051/0004-6361:20041014
Zocali, M. ; Barbuy, B. ; Hill, V. ; Ortolani, S. ; Renzini, A. ; Bica, E. ; Momany, Y. ; Pasquini, L. ; Minniti, D. ; Rich, R. M. / The metal content of the bulge globular cluster NGC 6528. En: Astronomy and Astrophysics. 2004 ; Vol. 423, N.º 2. pp. 507-516.
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title = "The metal content of the bulge globular cluster NGC 6528",
abstract = "High resolution spectra of five stars in the bulge globular cluster NGC 6528 were obtained at the 8m VLT UT2-Kueyen telescope with the UVES spectrograph. Out of the five stars, two of them showed evidence of binarity. The target stars belong to the horizontal and red giant branch stages, at 4000 < feff < 4800 K. Multiband V, I, J, H, Ks photometry was used to derive initial effective temperatures and gravities. The main purpose of this study is the determination of metallicity and elemental ratios for this template bulge cluster, as a basis for the fundamental calibration of metal-rich populations. The present analysis provides a metallicity [Fe/H] = -0.1 ± 0.2 and the α-elements O, Mg and Si, show [α/Fe] =+0.1, whereas Ca and Ti are around the solar value or below, resulting in an overall metallicity Z ≈ Z⊙.",
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Zocali, M, Barbuy, B, Hill, V, Ortolani, S, Renzini, A, Bica, E, Momany, Y, Pasquini, L, Minniti, D & Rich, RM 2004, 'The metal content of the bulge globular cluster NGC 6528', Astronomy and Astrophysics, vol. 423, n.º 2, pp. 507-516. https://doi.org/10.1051/0004-6361:20041014

The metal content of the bulge globular cluster NGC 6528. / Zocali, M.; Barbuy, B.; Hill, V.; Ortolani, S.; Renzini, A.; Bica, E.; Momany, Y.; Pasquini, L.; Minniti, D.; Rich, R. M.

En: Astronomy and Astrophysics, Vol. 423, N.º 2, 08.2004, p. 507-516.

Resultado de la investigación: Article

TY - JOUR

T1 - The metal content of the bulge globular cluster NGC 6528

AU - Zocali, M.

AU - Barbuy, B.

AU - Hill, V.

AU - Ortolani, S.

AU - Renzini, A.

AU - Bica, E.

AU - Momany, Y.

AU - Pasquini, L.

AU - Minniti, D.

AU - Rich, R. M.

PY - 2004/8

Y1 - 2004/8

N2 - High resolution spectra of five stars in the bulge globular cluster NGC 6528 were obtained at the 8m VLT UT2-Kueyen telescope with the UVES spectrograph. Out of the five stars, two of them showed evidence of binarity. The target stars belong to the horizontal and red giant branch stages, at 4000 < feff < 4800 K. Multiband V, I, J, H, Ks photometry was used to derive initial effective temperatures and gravities. The main purpose of this study is the determination of metallicity and elemental ratios for this template bulge cluster, as a basis for the fundamental calibration of metal-rich populations. The present analysis provides a metallicity [Fe/H] = -0.1 ± 0.2 and the α-elements O, Mg and Si, show [α/Fe] =+0.1, whereas Ca and Ti are around the solar value or below, resulting in an overall metallicity Z ≈ Z⊙.

AB - High resolution spectra of five stars in the bulge globular cluster NGC 6528 were obtained at the 8m VLT UT2-Kueyen telescope with the UVES spectrograph. Out of the five stars, two of them showed evidence of binarity. The target stars belong to the horizontal and red giant branch stages, at 4000 < feff < 4800 K. Multiband V, I, J, H, Ks photometry was used to derive initial effective temperatures and gravities. The main purpose of this study is the determination of metallicity and elemental ratios for this template bulge cluster, as a basis for the fundamental calibration of metal-rich populations. The present analysis provides a metallicity [Fe/H] = -0.1 ± 0.2 and the α-elements O, Mg and Si, show [α/Fe] =+0.1, whereas Ca and Ti are around the solar value or below, resulting in an overall metallicity Z ≈ Z⊙.

KW - Galaxy: bulge

KW - Globular clusters: individual: NGC 6528

KW - Stars: abundances

KW - Stars: atmospheres

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U2 - 10.1051/0004-6361:20041014

DO - 10.1051/0004-6361:20041014

M3 - Article

AN - SCOPUS:4043094114

VL - 423

SP - 507

EP - 516

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

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Zocali M, Barbuy B, Hill V, Ortolani S, Renzini A, Bica E y otros. The metal content of the bulge globular cluster NGC 6528. Astronomy and Astrophysics. 2004 ago;423(2):507-516. https://doi.org/10.1051/0004-6361:20041014