Oxygen abundances in old disc and halo stars of the Galaxy

Bibcode
1989Ap&SS.157...55R
DOI
10.1007/BF00637310
Rebolo, R.; Abia, C.
Bibliographical reference

(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Phenomena in Galaxies, Puerto de la Cruz, Spain, July 4-15, 1988) Astrophysics and Space Science (ISSN 0004-640X), vol. 157, no. 1-2, July 1989, p. 55-60.

Advertised on:
7
1989
Number of authors
2
IAC number of authors
0
Citations
1
Refereed citations
1
Description
Intermediate resolution CCD spectra of the oxygen triplet at 7770 A have been analyzed to determine oxygen abundances in a sample of metal-deficient stars with metallicities covering the range of Fe/H values between -0.2 and -2.5. Important oxygen overabundances (O/F values of not less than 1) are found in the more metal deficient stars of the sample. The information that these observations provide about the early nucleosynthesis history and chemical evolution of the Galaxy is briefly discussed.
Type
Non-refereed
Milky Way Galaxy
Stellar composition

It may interest you

  • Non-refereed
    ANDES, the high resolution spectrograph for the ELT: science goals, project overview, and future developments
    The first generation of ELT instruments includes an optical-infrared high resolution spectrograph, indicated as ELT-HIRES and recently christened ANDES (ArmazoNes high Dispersion Echelle Spectrograph). ANDES consists of three fibre-fed spectrographs ([U]BV, RIZ, YJH) providing a spectral resolution of ∼100,000 with a minimum simultaneous wavelength
    Marconi, A. et al.

    Advertised on:

    7
    2024
    Bibcode
    2024SPIE13096E..13M
    Citations
    1
  • Non-refereed
    An overview of the preliminary optical design of the European Solar Telescope (EST)
    The European Solar Telescope (EST) is a 4-m class-solar telescope that will become part of the next generation of groundbased facilities. Located at the "Observatorio del Roque de los Muchachos" in La Palma (Spain), it will be aimed to study the magnetic connectivity of the solar atmosphere with high spatial and temporal resolution. The EST optical
    Belío-Asin, Marta et al.

    Advertised on:

    8
    2024
    Bibcode
    2024SPIE13094E..2GB
    Citations
    0
  • Non-refereed
    ANDES, the high-resolution spectrograph for the ELT: UBV spectrograph preliminary design
    We present the design of the ANDES UBV module, the bluest spectrograph of the ANDES instrument. It is a fiber-fed high resolution, high stability spectrograph, which will be installed on the ELT-Nasmyth platform to minimize blue fibre losses from the focal plane to the spectrograph. In this paper we present the status of development of the
    Weber, Michael et al.

    Advertised on:

    7
    2024
    Bibcode
    2024SPIE13096E..4AW
    Citations
    0