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作者:Leona Lovrenčić , Vjera Pavić , Stefan Majnarić ...
来源:[J].Knowledge & Management of Aquatic Ecosystems(IF 0.467), 2020, (421)EDP Sciences
摘要:Austropotamobius torrentium is one of four native European crayfish species inhabiting Croatian freshwaters. Existence of eight divergent monophyletic mtDNA phylogroups was described within A. torrentium ; six of them are distributed in Croatia, with the highest genetic diversity...
作者:Francisco J. Oficialdegui , Marta I. Sánchez , Christophe Lejeusne ...
来源:[J].Knowledge & Management of Aquatic Ecosystems(IF 0.467), 2020, (421)EDP Sciences
摘要:One of the biggest challenges in understanding and managing biological invasions is the identification of the routes of introduction. This information is often incomplete because of unnoticed, unreported and, sometimes, illegal translocations. Reports on the introduction of the r...
作者:Francesco Coti Zelati , Alice Borghese , Nanda Rea ...
来源:[J].Astronomy & Astrophysics(IF 5.084), 2020, Vol.633EDP Sciences
摘要:We present the evolution of the X-ray emission properties of the magnetar 1E 1547.0–5408 since February 2004 over a time period covering three outbursts. We analyzed new and archival observations taken with the Swift , NuSTAR , Chandra , and XMM–Newton X-ray satellites. The ...
作者:Sho Shibata , Ravit Helled , Masahiro Ikoma
来源:[J].Astronomy & Astrophysics(IF 5.084), 2020, Vol.633EDP Sciences
摘要:Context. Recent studies suggest that in comparison to their host star, many giant exoplanets are highly enriched with heavy elements and can contain several tens of Earth masses of heavy elements or more. Such enrichment is considered to have been delivered by the accretion ...
作者:Nushkia Chamba , Ignacio Trujillo , Johan H. Knapen
来源:[J].Astronomy & Astrophysics(IF 5.084), 2020, Vol.633EDP Sciences
摘要:Now almost 70 years since its introduction, the effective or half-light radius has become a very popular choice for characterising galaxy size. However, the effective radius measures the concentration of light within galaxies and thus does not capture our intuitive definition of ...
作者:P. M. Visser , M. A. Mol
来源:[J].Astronomy & Astrophysics(IF 5.084), 2020, Vol.633EDP Sciences
摘要:Context. A double planet system or planet binary undergoes eclipses that modify the reflective light curve. In the time domain, the eclipse events are fast and weak. This would make their signal difficult to find and recognize in the phase light curve, even for small inclina...
作者:C. Park
来源:[J].Astronomy & Astrophysics(IF 5.084), 2020, Vol.633EDP Sciences
摘要:Aims . The relationship between the intrinsic properties of a large meteoroid, that is, mass, density, chemical composition, and flight velocity, and its spectrum are identified. Methods . Assuming thermochemical equilibrium and inviscid flow and using a quasi-one-dimensional app...
作者:A. I. Shapiro , E. M. Amazo-Gómez , N. A. Krivova ...
来源:[J].Astronomy & Astrophysics(IF 5.084), 2020, Vol.633EDP Sciences
摘要:Context. Considerable effort has gone into using light curves observed by such space telescopes as CoRoT, Kepler , and TESS for determining stellar rotation periods. While rotation periods of active stars can be reliably determined, the light curves of many older and less ac...
作者:L. Mancini , P. Sarkis , Th. Henning ...
来源:[J].Astronomy & Astrophysics(IF 5.084), 2020, Vol.633EDP Sciences
摘要:Context. The transiting exoplanetary system WASP-174 was reported to be composed by a main-sequence F star ( V = 11.8 mag) and a giant planet, WASP-174b (orbital period P orb = 4.23 days). However only an upper limit was placed on the planet mass (<1.3 M Jup<...
作者:H. Parviainen , E. Palle , M. R. Zapatero-Osorio ...
来源:[J].Astronomy & Astrophysics(IF 5.084), 2020, Vol.633EDP Sciences
摘要:Context. We report the discovery of TOI 263.01 (TIC 120916706), a transiting substellar object ( R = 0.87 R Jup) orbiting a faint M3.5 V dwarf ( V = 18.97) on a 0.56 d orbit. Aims. We setout to determine the nature of the Transiting Exoplanet Survey Satellite (TES...

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