The oldest galactic open clusters - New CCD photometry and colour-magnitude diagrams

Bibcode
1990Ap&SS.169...41P
DOI
10.1007/BF00640683
Paez, E.; Martinez Roger, C.; Arribas, S.; Straniero, O.; Caputo, F.
Referencia bibliográfica

(IAU, European Regional Astronomy Meeting on New Windows to the Universe, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640X), vol. 169, no. 1-2, July 1990, p. 41-44.

Fecha de publicación:
7
1990
Número de autores
5
Número de autores del IAC
0
Número de citas
3
Número de citas referidas
3
Descripción
The paper presents CCD photometry for stars in three fields centered on the old open cluster NGC 188 and in four fields on the intermediate-age cluster NGC 7789, which has been performed with the aim of investigating the HR diagram distribution of the cluster's Main-Sequence (MS) stars. A sufficiently well-defined sequence of subgiant, turn-off, and MS stars have been detected, extending the observed lower MS down to about V = 20 mag.
Tipo
Sin árbitro
Estrellas de la secuencia principal
Evolución estelar

Te puede interesar

  • Sin árbitro
    The Gravitational-wave Optical Transient Observer (GOTO)
    The Gravitational-wave Optical Transient Observer (GOTO) is a project dedicated to identifying optical counterparts to gravitational-wave detections using a network of dedicated, wide-field telescopes. After almost a decade of design, construction, and commissioning work, the GOTO network is now fully operational with two antipodal sites: La Palma
    Dyer, Martin J. et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13094E..1XD
    Número de citas
    1
  • Sin árbitro
    Innovative solution for upgrading commercial bearings for use in cryogenic instruments
    Infrared instruments for astronomy require many bearings for motion that must move in cryogenic conditions. There are poor and expensive options for this, and the companies with qualified bearings only supply after a long time. To attend these constrains, the Instituto de Astrofísica de Canarias (IAC) started to develop a procedure to upgrade
    Luján, Alejandro et al.

    Fecha de publicación:

    8
    2024
    Bibcode
    2024SPIE13100E..73L
    Número de citas
    0
  • Sin árbitro
    NIRPS first light and early science: breaking the 1 m/s RV precision barrier at infrared wavelengths
    The Near-InfraRed Planet Searcher or NIRPS is a precision radial velocity spectrograph developed through collaborative efforts among laboratories in Switzerland, Canada, Brazil, France, Portugal and Spain. NIRPS extends to the 0.98-1.8 μm domain of the pioneering HARPS instrument at the La Silla 3.6-m telescope in Chile and it has achieved
    Artigau, Étienne et al.

    Fecha de publicación:

    7
    2024
    Bibcode
    2024SPIE13096E..0CA
    Número de citas
    0