Publications

  • Confirmation of an He I evaporating atmosphere around the 650-Myr-old sub-Neptune HD 235088 b (TOI-1430 b) with CARMENES

    HD 235088 (TOI-1430) is a young star known to host a sub-Neptune-sized planet candidate. We validated the planetary nature of HD 235088 b with multiband photometry, refined its planetary parameters, and obtained a new age estimate of the host star, placing it at 600-800 Myr. Previous spectroscopic observations of a single transit detected an excess

    Orell-Miquel, J. et al.

    Advertised on:

    9
    2023
    Citations
    0
  • Constraints on the Abundance of Primordial Black Holes from X-Ray Quasar Microlensing Observations: Substellar to Planetary Mass Range

    We use X-ray observations of quasar microlensing (sensitive to smaller compact objects than in the optical) to study the possible presence of a population of low mass black holes (BHs; from ~10-3 M ⊙ to 10-1 M ⊙) in lens galaxies. We compare these observations with microlensing magnification simulations of a mixed population of stars and BHs plus a

    Esteban-Gutiérrez, A. et al.

    Advertised on:

    9
    2023
    Citations
    0
  • GTC/CanariCam Mid-IR Polarimetry of Magnetic Fields in Star-Forming Region W51 IRS2

    We present 0.4 arcsec-resolution mid-IR imaging polarimetry, obtained with CanariCam at GTC, of the central 0.11 pc x 0.28 pc (4.2 arcsec x 10.8 arcsec) region of W51 IRS2. The observed mid-IR polarization across this region is typically several percent, with values as high as 12%. The polarization arises from ensembles of non-spherical silicate

    Swanson, Pae et al.

    Advertised on:

    9
    2023
    Citations
    0
  • Unsupervised Classification of RR Lyrae stars

    Big Datasets are becoming more and more prominent in the field of astrophysics with new powerful telescopes and surveys capturing parts of our night sky in an almost continuous fashion. Consequently, unsupervised Machine Learning is key to getting first insight into this abundance of data. We present our results on the performance of unsupervised

    Steinwender, Lukas et al.

    Advertised on:

    9
    2023
    Citations
    0
  • Long-term multiwavelength monitoring and reverberation mapping of NGC 2617 during a changing-look event

    We present the results of photometric and spectroscopic monitoring campaigns of the changing look AGN NGC 2617 carried out from 2016 until 2022 and covering the wavelength range from the X-ray to the near-IR. The facilities included the telescopes of the SAI MSU, MASTER Global Robotic Net, the 2.3-m WIRO telescope, Swift, and others. We found

    Oknyansky, V. L. et al.

    Advertised on:

    10
    2023
    Citations
    0
  • The Pristine dwarf galaxy survey-V. The edges of the dwarf galaxy Hercules

    We present a new spectroscopic study of 175 stars in the vicinity of the dwarf galaxy Hercules (d ~ 132 kpc) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Field multi-object system to solve the conundrum that whether Hercules is tidally disrupting. We combine broad-band photometry, proper

    Longeard, Nicolas et al.

    Advertised on:

    10
    2023
    Citations
    1