Search Publications
Escape of planetary atmospheres: physical processes and numerical models
Shematovich, V. I.; Marov, M. Ya
We address the problem of the dissipation (escape) of planetary atmospheres and discuss the physical mechanisms controlling the nature of the relevant processes and review the mathematical models and numerical methods used in the analysis of this phenomenon, taking the limitations imposed by available experimental data into account. The structural…
Asteroseismology of the Double-mode High-amplitude δ Scuti Star VX Hydrae
Fu, Jian-Ning; Su, Jie; Castro, A. +11 more
Bi-site time-series photometric and high-resolution spectroscopic observations were made for the double-mode high-amplitude δ Scuti star VX Hya. The fundamental frequency f 0 = 4.4763 c days-1, the first overtone f 1 = 5.7897 c days-1, and 23 harmonics and linear combinations of f 0 and f
Globular Clusters: Absolute Proper Motions and Galactic Orbits
Dambis, A. K.; Rastorguev, A. S.; Yalyalieva, L. N. +3 more
We cross-match objects from several different astronomical catalogs to determine the absolute proper motions of stars within the 30-arcmin radius fields of 115 Milky-Way globular clusters with the accuracy of 1–2 mas yr‑1. The proper motions are based on positional data recovered from the USNO-B1, 2MASS, URAT1, ALLWISE, UCAC5, and Gaia …
Single ICMEs and Complex Transient Structures in the Solar Wind in 2010 - 2011
Zhukov, A. N.; Slemzin, V.; Goryaev, F. +3 more
We analyze the statistics, solar sources, and properties of interplanetary coronal mass ejections (ICMEs) in the solar wind. The total number of coronal mass ejections (CMEs) registered in the Coordinated Data Analysis Workshops catalog (CDAW) during the first eight years of Cycle 24 was 61% larger than in the same period of Cycle 23, but the numb…
Herschel Planetary Nebula Survey (HerPlaNS). hydrogen recombination laser lines in Mz 3
Montez, Rodolfo; Villaver, Eva; Ueta, Toshiya +12 more
The bipolar nebula Menzel 3 (Mz 3) was observed as part of the Herschel Planetary Nebula Survey (HerPlaNS), which used the PACS and SPIRE instruments aboard the Herschel Space Observatory to study a sample of planetary nebulae (PNe). In this paper, one of the series describing HerPlaNS results, we report the detection of H I recombination lines (H…
Dynamic unmagnetized plasma in the diamagnetic cavity around comet 67P/Churyumov-Gerasimenko
Henri, Pierre; Nilsson, Hans; Hajra, Rajkumar +12 more
The Rosetta orbiter witnessed several hundred diamagnetic cavity crossings (unmagnetized regions) around comet 67P/Churyumov-Gerasimenko during its two year survey of the comet. The characteristics of the plasma environment inside these diamagnetic regions are studied using in situ measurements by the Rosetta Plasma Consortium instruments. Althoug…
A reevaluation of the 2MASS zero points using CALSPEC spectrophotometry complemented with Gaia Data Release 2 parallaxes
Maíz Apellániz, J.; Pantaleoni González, M.
Context. 2MASS is the reference survey in the near-infrared (NIR) part of the spectrum due to its whole-sky coverage, large dynamic range, and proven calibration uniformity. However, previous studies disagree on the value of the zero points (ZPs) for its three bands JHK at the hundredth of a magnitude level. The disagreement should become more not…
The bivariate luminosity and mass functions of the local HRS galaxy sample. The stellar, dust, and gas mass functions
Andreani, P.; Ciesla, L.; Buat, V. +4 more
Aims: We discuss the results of the relationships between the K-band and stellar mass, FIR luminosities, star formation rate, and the masses of the dust and gas of nearby galaxies computing the bivariate K-band-luminosity function (BLF) and bivariate K-band-mass function (BMF) of the Herschel Reference Survey (HRS), a volume-limited sample wi…
Bi-lobed Shape of Comet 67P from a Collapsed Binary
Nesvorný, David; Vokrouhlický, David; Parker, Joel
The Rosetta spacecraft observations revealed that the nucleus of comet 67P/Churyumov-Gerasimenko consists of two similarly sized lobes connected by a narrow neck. Here, we evaluate the possibility that 67P is a collapsed binary. We assume that the progenitor of 67P was a binary and consider various physical mechanisms that could have brought the b…
Kuiper belt analogues in nearby M-type planet-host systems
Eiroa, C.; Marshall, J. P.; Ardila, D. +6 more
We present the results of a Herschel survey of 21 late-type stars that host planets discovered by the radial velocity technique. The aims were to discover new discs in these systems and to search for any correlation between planet presence and disc properties. In addition to the known disc around GJ 581, we report the discovery of two new discs, i…