Astrophysical: Techniques

  • Publication
    Local Cosmology from Isolated Dwarfs: variable stars from the LCID project.
    During Cycle 14 a total of 113 HST orbits were secured to observe five isolated dwarf galaxies, namely Tucana, LGS3, LeoA, IC1613, and Cetus. The aim of the...
  • Publication
    LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole
    We present the results of a four-month campaign searching for low-frequency radio transients near the North Celestial Pole with the Low-Frequency Array (LOFAR)...
  • Publication
    Long-lasting activity of asteroid (248370) 2005 QN<SUB>173</SUB>
    We present the results of observations of asteroid (248370) QN 173 obtained during July 2021-January 2022 with three telescopes. Our analysis revealed the...
  • Publication
    Long-term photometric monitoring with the Mercator telescope. Frequencies and multicolour amplitudes of γ Doradus stars
    Context: γ Dor stars are excellent targets for asteroseismology since the gravity modes present in these stars probe the deep stellar interiors. Mode...
  • Publication
    Long-term photometry of IC 348 with the Young Exoplanet Transit Initiative network
    We present long-term photometric observations of the young open cluster IC 348 with a baseline time-scale of 2.4 yr. Our study was conducted with several...
  • Publication
    Long-term stability of spotted regions and the activity-induced Rossiter-McLaughlin effect on V889 Herculis. A synergy of photometry, radial velocity measurements, and Doppler imaging
    Context: The young active G-dwarf star V889 Herculis (HD 171488) shows pronounced spots in Doppler images as well as large variations in photometry and radial...
  • Publication
    Looking for a Connection between the Am Phenomenon and Hybrid δ Sct -γ Dor Pulsation: Determination of the Fundamental Parameters and Abundances of HD 114839 and BD +18 4914
    δ Sct-γ Dor hybrids pulsate simultaneously in p- and g-modes, which carry information on the structure of the envelope as well as to the core. Hence, they are...
  • Publication
    Low optical polarization at the core of the optically thin jet of M87
    We study the optical linear and circular polarization in the optically thin regime of the core and jet of M87. Observations were acquired two days before the...
  • Publication
    Low-amplitude rotational modulation rather than pulsations in the CoRoT B-type supergiant HD 46769
    Aims: We aim to detect and interpret photometric and spectroscopic variability of the bright CoRoT B-type supergiant target HD 46769 (V = 5.79). We also attempt...