Publications

This section contains the publications database that collects IAC articles published in scientific journals. Please, click on the arrow to see full search filter and sort options: author, journal, year, etc..

It also provides access to IAC Preprints Repository here: https://research.iac.es/preprints/

  • Refereed
    Properties of sunspots in cycle 23. I. Dependence of brightness on sunspot size and cycle phase
    Aims:In this paper we investigate the dependence of umbral core brightness, as well as the mean umbral and penumbral brightness on the phase of the solar cycle and on the size of the sunspot. Methods: Albregtsen & Maltby (1978, Nature, 274, 41) reported an increase in umbral core brightness from the early to the late phase of solar cycle from the
    Mathew, S. K. et al.

    Advertised on:

    4
    2007
    Bibcode
    2007A&A...465..291M
    Citations
    81
  • Thesis
    POBLACIONES ESTELARES DE GALAXIAS DE TIPO TEMPRANO
    En esta tesis hemos realizado un estudio detallado de poblaciones estelares de galaxias elíptica en cúmulos de distinta masa. Nuestros resultados sugieren que las escalas de tiempo de formación de las estrellas en este tipo de galaxias dependen del entorno en el que se encuentran: las estrellas de galaxias de cúmulos masivos se forman más
    CONRADO CARRETERO HERRAEZ

    Advertised on:

    4
    2007
    Bibcode
    LINK
  • Refereed
    Physical parameters and multiplicity of five southern close eclipsing binaries
    Aims:We detected tertiary components of close binaries from spectroscopy and light curve modelling, investigated the light-travel time effect and the possibility of magnetic activity cycles, measured mass ratios for unstudied systems, and derived absolute parameters. Methods: We carried out new photometric and spectroscopic observations of five
    Szalai, T. et al.

    Advertised on:

    4
    2007
    Bibcode
    2007A&A...465..943S
    Citations
    60
  • Refereed
    Oxygen abundances in nearby stars. Clues to the formation and evolution of the Galactic disk
    The abundances of iron and oxygen are homogeneously determined in a sample of 523 nearby (d 5500 K and [Fe/H] -0.3, we find no obvious indication of a sudden decrease (i.e., a "knee") in the [O/Fe] vs. [Fe/H] pattern of thick-disk stars that would connect the thick and thin disk trends at a high metallicity. We conclude that Type Ia supernovae (SN
    Ramírez, I. et al.

    Advertised on:

    4
    2007
    Bibcode
    2007A&A...465..271R
    Citations
    193
  • Refereed
    On the ultracompact nature of 4U1822-000
    We report the discovery of a periodic modulation in the optical lightcurve of the candidate ultracompact X-ray binary 4U1822-000. Using time-resolved optical photometry taken with the William Herschel Telescope we find evidence for a sinusoidal modulation with a semi-amplitude of 8 per cent and a period of 191min, which is most likely close to the
    Shahbaz, T. et al.

    Advertised on:

    4
    2007
    Bibcode
    2007MNRAS.376.1886S
    Citations
    8
  • Refereed
    On the Stokes V Amplitude Ratio as an Indicator of the Field Strength in the Solar Internetwork
    The results of the determination of magnetic field strength from weak polarimetric signals in solar internetwork regions are contradictory. We investigate the origin of this contradiction with the help of MHD simulations. It is shown that the Stokes V amplitude ratio of the Fe I λλ15652-15648 lines is a good indicator of kG magnetic field
    Khomenko, E. et al.

    Advertised on:

    4
    2007
    Bibcode
    2007ApJ...659.1726K
    Citations
    59