Journal: Astronomy and Astrophysics

  • Publication
    Projection effects in the spectra of early-type pulsating stars
    The relation between the surface velocity of a pulsating star in the star's inertial frame and the apparent expansion velocity measured by a remote observer has...
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    Propagation of ionizing radiation in H II regions: The effects of optically thick density fluctuations
    The accepted explanation of the observed dichotomy of two orders of magnitude between in situ measurements of electron density in H II regions, derived from...
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    Propagation of untwisting solar jets from the low-beta corona into the super-Alfvénic wind: Testing a solar origin scenario for switchbacks
    Context. Parker Solar Probe's (PSP) discovery of the prevalence of switchbacks (SBs), localised magnetic deflections in the nascent solar wind, has sparked...
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    Proper motions and velocity asymmetries in the RW Aur jet
    We present adaptive optics spectro-imaging observations of the RW Aur jet in optical forbidden lines, at an angular resolution of 0.4''. Comparison with HST...
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    Proper motions of cool and ultracool candidate members in the Upper Scorpius OB association
    Aims: Proper motion measurements of the cool and ultracool populations in the Upper Scorpius OB association are crucial to confirm membership and to identify...
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    Properties of barred galaxies with the environment. I. The case of the Virgo cluster
    Context. Barred structures are widespread in a considerable fraction of galactic disks, spanning diverse environments and galaxy luminosities. The environment...
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    Properties of central stars of planetary nebulae with distances in Gaia DR2
    Context. We have compiled a catalogue of central stars of planetary nebulae (CSPN) with reliable distances and positions obtained from Gaia Data Release 2 (DR2)...
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    Properties of convective motions in facular regions
    Aims: We study the properties of solar granulation in a facular region from the photosphere up to the lower chromosphere. Our aim is to investigate the...
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    Properties of extragalactic thick discs recovered from ultra-deep Stripe82 imaging
    Context. Thick discs can give invaluable information on the formation and evolution history of galaxies as most, if not all, disc galaxies have a thin...