Publications

  • Multicolour optical light curves of the companion star to the millisecond pulsar PSR J2051-0827

    We present simultaneous, multicolour optical light curves of the companion star to the black-widow pulsar PSR J2051-0827, obtained approximately 10 yr apart using ULTRACAM and HiPERCAM, respectively. The ULTRACAM light curves confirm the previously reported asymmetry in which the leading hemisphere of the companion star appears to be brighter than

    Dhillon, V. S. et al.

    Advertised on:

    10
    2022
  • Sub-stellar companions of intermediate-mass stars with CoRoT: CoRoT-34b, CoRoT-35b, and CoRoT-36b

    Theories of planet formation give contradicting results of how frequent close-in giant planets of intermediate mass stars (IMSs; $1.3\le M_{\star }\le 3.2\, \mathrm{M}_{\odot }$) are. Some theories predict a high rate of IMSs with close-in gas giants, while others predict a very low rate. Thus, determining the frequency of close-in giant planets of

    Sebastian, D. et al.

    Advertised on:

    10
    2022
  • The Pristine dwarf galaxy survey - IV. Probing the outskirts of the dwarf galaxy Boötes I

    We present a new spectroscopic study of the dwarf galaxy Boötes I (Boo I) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Field multi-object system. We observed 36 high-probability Boo I stars selected using Gaia Early Data Release 3 proper motions and photometric metallicities from the

    Longeard, Nicolas et al.

    Advertised on:

    10
    2022
  • Information content of BP/RP spectra in Gaia DR3

    Gaia Data Release 3 has provided the astronomical community with the largest stellar spectroscopic survey to date (> 220 million sources). The low resolution (R~50) blue photometer (BP) and red photometer (RP) spectra will allow for the estimation of stellar atmospheric parameters such as effective temperature, surface gravity, and metallicity. We

    Witten, Callum E. C. et al.

    Advertised on:

    11
    2022
  • Geological risk at Roque de los Muchachos astronomical observatory: lessons learned from Cumbre Vieja eruption.

    In 2010, it was published an analysis of the impact of geological activity on the main astronomical observatories worldwide (Eff-Darwich et al., 2010), among them, Roque de los Muchachos observatory (ORM), in the island of La Palma, Canary Islands (Spain). In this work, we compare the results on geological risk at ORM that were obtained in 2010

    Eff-Darwich, Antonio et al.

    Advertised on:

    5
    2022
  • Impact at the astronomical Observatory of Roque de los Muchachos from the Cumbre Vieja 2021 volcanic eruption at La Palma.

    Between September 19 and December 13, 2021 a strombolian volcanic eruption took place on the island of La Palma. The main edifice was appeared at an altitude of around 900 masl, reaching 1122 masl at the end of the process. The Roque de los Muchachos Observatory (ORM) is an outstanding international astronomical site, hosting some of the most

    Pérez-Arencibia, Juan Carlos et al.

    Advertised on:

    5
    2022