Search Publications
The Astrometric Animation of Water Masers toward the Mira Variable BX Cam
Kim, Dong-Jin; Sun, Yan; Orosz, Gabor +20 more
We report very long baseline interferometry (VLBI) monitoring observations of the 22 GHz water (H2O) masers around the Mira variable BX Cam, which were carried out as a part of the EAVN Synthesis of Stellar Maser Animations project. Data of 37 epochs in total were obtained from 2018 May to 2021 June with a time interval of 3-4 weeks, sp…
Catalogue of stars measured in the Geneva seven-colour photometric system
Paunzen, E.
Context. The Geneva seven-colour photometric system is successfully applied to the study of various astrophysical objects. It measures the slope of the Paschen continuum, the Balmer discontinuity, and blocking absorption due to hydrogen or metallic lines. One of its greatest strengths is its intrinsic homogeneity.
Aims: A new catalogue of the…
Dust emissivity in resolved spiral galaxies
Clark, Christopher J. R.; De Looze, Ilse; Baes, Maarten +12 more
Context. The far-infrared (FIR) and sub-millimeter (submm) emissivity, ϵν, of the Milky Way (MW) cirrus is an important benchmark for dust grain models. Dust masses in other galaxies are generally derived from the FIR/submm using the emission properties of these MW-calibrated models.
Aims: We seek to derive the FIR/submm ϵν
L-GALAXIES 2020: the formation and chemical evolution of stellar haloes in Milky Way analogues and galaxy clusters
Yates, Robert M.; Mohamed, Shazrene S.; Murphy, Geoff G.
We present an analysis of the formation and chemical evolution of stellar haloes around (a) Milky Way analogue (MWA) galaxies and (b) galaxy clusters in the L-GALAXIES 2020 semi-analytic model of galaxy evolution. Observed stellar halo properties are better reproduced when assuming a gradual stripping model for the removal of cold gas and stars fr…
The binary system of the spinning-top Be star Achernar
Klement, Robert; Rivinius, Thomas; Mérand, Antoine +16 more
Context. Achernar, the closest and brightest classical Be star, presents rotational flattening, gravity darkening, occasional emission lines due to a gaseous disk, and an extended polar wind. It is also a member of a close binary system with an early A-type dwarf companion.
Aims: We aim to determine the orbital parameters of the Achernar syst…
An estimate of the mass of the Milky Way from the Magellanic Stream
Baum, Stefi; Chakrabarti, Sukanya; Craig, Peter A. +1 more
We present a model for the formation of the Magellanic Stream (MS) due to ram pressure stripping. We model the history of the Small and Large Magellanic Clouds in the recent cosmological past in a static Milky Way (MW) potential with diffuse halo gas, using observationally motivated orbits for the Magellanic Clouds derived from HST proper motions …
Dust scattering halo around the CCO in HESS J1731-347: A detailed analysis
Pühlhofer, G.; Doroshenko, V.; Landstorfer, A.
The supernova remnant (SNR) HESS J1731−347 is one of the few objects exhibiting emission up to the TeV energy band and it stands as a prime target for the study of cosmic ray acceleration in SNRs. It also hosts a central compact object (CCO), which is of interest in the context of the ultra-dense matter equation of state in neutron stars. For both…
Deep near-infrared survey towards the W40 and Serpens South region in the Aquila Rift: A comprehensive catalogue of young stellar objects
Wang, Hongchi; Gutermuth, Robert A.; Ma, Yuehui +5 more
Active star-forming regions are excellent laboratories for studying the origins and evolution of young stellar object (YSO) clustering. The W40-Serpens South region is such a region, and we compile a large near- and mid-infrared catalogue of point sources in it, based on deep near-infrared observations of Canada-France-Hawaii Telescope (CFHT) in c…
Sudden depletion of Alfvénic turbulence in the rarefaction region of corotating solar wind high-speed streams at 1 AU: Possible solar origin?
Pietropaolo, E.; Bruno, R.; Marino, R. +2 more
A canonical description of a corotating solar wind high-speed stream in terms of velocity profile would indicate three main regions: a stream interface or corotating interaction region characterized by a rapid increase in flow speed and by compressive phenomena that are due to dynamical interaction between the fast wind flow and the slower ambient…
High-latitude Observations of Inertial-range Turbulence by the Ulysses Spacecraft During the Solar Minimum of 1993-96
Isenberg, Philip A.; Schwadron, Nathan A.; Murphy, Neil +8 more
We have examined Ulysses magnetic field measurements for the years 1993 through 1996 as the spacecraft moved sunward from 5 au at high southern latitudes, passing through perihelion during the first fast-latitude scan to achieve high northern latitudes, and finally returning to 5 au. These years represent near-solar-minimum activity, providing a c…