Journal: Astronomy and Astrophysics

  • Publication
    Sensitivity of the GOLF signal to combined solar velocity and intensity variations
    The GOLF instrument provides a stable and continuous measurement of the intensity of spatially integrated sunlight in one wing of the sodium D lines. Because...
  • Publication
    Separation between RR Lyrae and type II Cepheids and their importance for a distance determination: the case of omega Cen
    The separation between RR Lyrae (RRLs) and type II Cepheid (T2Cs) variables based on their period is debated. Both types of variable stars are distance...
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    Seventeen new very low-mass members in Taurus. The brown dwarf deficit revisited
    Recent studies of the substellar population in the Taurus cloud have revealed a deficit of brown dwarfs compared to the Trapezium cluster population. However...
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    Shakhbazian compact galaxy groups. III. Photometric and spectroscopic study of ShCG 181, ShCG 344,ShCG 361, and ShCG 362
    In 1995 we commenced a detailed spectral and photometric study of Shakhbazian compact groups. In this paper the results on groups ShCG 181, ShCG 344, ShCG 361...
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    Shakhbazian compact galaxy groups. IV. Photometric and spectroscopic study of ShCG 8, ShCG 14 ShCG 19, ShCG 22
    We present the results of a detailed spectroscopic and photometric study of four Shakhbazian compact groups: ShCG 8, ShCG 14, ShCG 19, and ShCG 22. We...
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    Shape and spin determination of Barbarian asteroids
    Context. The so-called Barbarian asteroids share peculiar, but common polarimetric properties, probably related to both their shape and composition. They are...
  • Publication
    Shock-induced polarized hydrogen emission lines in the Mira star o Ceti
    Context. In the spectra of variable pulsating stars, especially Mira stars, the detection of intense hydrogen emission lines has been explained by the presence...
  • Publication
    Short-term spectroscopic monitoring of two cool dwarfs with strong magnetic fields
    Context: There is now growing evidence that some brown dwarfs (BDs) have very strong magnetic fields, and yet their surface temperatures are so low that the...
  • Publication
    Short-term variability of the transitional pulsar candidate CXOU J110926.4‑650224 from X-rays to infrared
    CXOU J110926.4‑650224 is a candidate transitional millisecond pulsar (tMSP) with X-ray and radio emission properties reminiscent of those observed in confirmed...