134 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Konkoly ObservatoryHU126 papers
- HUN-REN Research Centre for Astronomy and Earth SciencesHU117 papers
- Eötvös Loránd UniversityHU91 papers
- Max Planck Institute for AstronomyDE51 papers
- Centre National de la Recherche ScientifiqueFR34 papers
- European Southern ObservatoryCL27 papers
- Monash UniversityAU23 papers
- Astronomical Observatory of CapodimonteIT19 papers
- Astronomical Observatory of RomeIT19 papers
- Space Telescope Science InstituteUS18 papers
- University of HullGB18 papers
- Joint Institute for Nuclear AstrophysicsUS16 papers
51 papers · 1 filter
The extended atmosphere and circumstellar environment of the cool evolved star VX Sagittarii as seen by MATISSE
A. Chiavassa, K. Kravchenko, M. Montargès +50
Context. VX Sgr is a cool, evolved, and luminous red star whose stellar parameters are difficult to determine, which affects its classification. Aims. We aim to spatially resolve t…
Coherent and incoherent superposition of transition matrix elements of the squeezing operator
Sandor Varro
We discuss the general matrix elements of the squeezing operator between number eigenstates of a harmonic oscillator (which may also represent a quantized mode of the electromagnet…
Automated Extended Aperture Photometry of K2 variable stars
Attila Bódi, Pál Szabó, Emese Plachy +2
Proper photometric data are challenging to obtain in the K2 mission of the Kepler space telescope due to strong systematics caused by the two-wheel-mode operation. It is especially…
Evolution of dust in protoplanetary disks of eruptive stars
Eduard Vorobyov, Aleksandr M. Skliarevskii, Tamara Molyarova +6
Luminosity bursts in young FU Orionis-type stars warm up the surrounding disks of gas and dust, thus inflicting changes on their morphological and chemical composition. In this wor…
Recurrent strong outbursts of an EXor-like young eruptive star Gaia20eae
Fernando Cruz-Sáenz de Miera, Ágnes Kóspál, Péter Ábrahám +21
We present follow-up photometric and spectroscopic observations, and subsequent analysis of Gaia20eae. This source triggered photometric alerts during 2020 after showing a 3…
On power values of pyramidal numbers, II
Andrej Dujella, Kálmán Győry, Philippe Michaud-Jacobs +1
For , we define the th order pyramidal number by \[ \mathrm{Pyr}_m(x) = \frac{1}{6} x(x+1)((m-2)x+5-m). \] In a previous paper, written by the first-, second-, and fou…
On the evolution of vortex in locally isothermal self-gravitating discs: a parameter study
D. Tarczay-Nehéz, K. Rozgonyi, Zs. Regály
Gas rich dusty circumstellar discs observed around young stellar objects are believed to be the birthplace of planets and planetary systems. Recent observations revealed that large…
Lack of other molecules in CO-rich debris discs: is it primordial or secondary gas?
Grigorii V. Smirnov-Pinchukov, Attila Moór, Dmitry A. Semenov +5
The nature of the gas in CO-rich debris discs remains poorly understood, as it could either be a remnant from the earlier Class II phase or of secondary origin, driven by the destr…
Non-radial modes in classical Cepheids. What to look for in spectroscopy?
H. Netzel, K. Kolenberg
Recent photometric observations of first-overtone classical Cepheids and RR Lyrae stars have led to the discovery of additional frequencies showing a characteristic period ratio of…
Confinement in the tricritical Ising model
M. Lencsés, G. Mussardo, G. Takács
We study the leading and sub-leading magnetic perturbations of the thermal integrable deformation of the tricritical Ising model. In the low-temperature phase, these magnetic…
Galactic Chemical Evolution of Radioactive Isotopes with an s-process Contribution
T. C. L. Trueman, B. Côté, A. Yagüe López +5
Analysis of inclusions in primitive meteorites reveals that several short-lived radionuclides (SLRs) with half-lives Myr existed in the early Solar System (ESS). We inves…
First models of s process in AGB stars of solar metallicity for the stellar evolutionary code ATON with a novel stable explicit numerical solver
A. Yagüe López, D. A. García-Hernández, P. Ventura +4
Aims. We describe the first s-process post-processing models for asymptotic giant branch (AGB) stars of masses 3, 4 and 5 M at solar metallicity (Z=0.018) computed using the input…
Eclipse timing variation analysis of OGLE-IV eclipsing binaries toward the Galactic Bulge. II. Short periodic triple stellar systems
Tamás Hajdu, Tamás Borkovits, Emese Forgács-Dajka +2
We report an eclipse timing variations (ETV) study to identify close, stellar mass companions to the eclipsing binaries monitored during the photometric survey OGLE-IV. We also pre…
The search for gas in debris discs: ALMA detection of CO gas in HD 36546
Isabel Rebollido, Álvaro Ribas, Itziar de Gregorio-Monsalvo +9
Debris discs represent the last stages of planet formation and as such are expected to be depleted of primordial gas. Nonetheless, in the last few years the presence of cold gas ha…
The Status and Future of Direct Nuclear Reaction Measurements for Stellar Burning
M. Aliotta, R. Buompane, M. Couder +22
The study of stellar burning began just over 100 years ago. Nonetheless, we do not yet have a detailed picture of the nucleosynthesis within stars and how nucleosynthesis impacts s…
The stellar beta-decay rate of 134Cs and its impact on the Barium nucleosynthesis in the s process
Kuo-Ang Li, Chong Qi, Maria Lugaro +5
We have calculated the stellar -decay rate of the important s-process branching point Cs based on the state of the art shell model calculations. At typical -process…
Aluminium-26 from massive binary stars II. Rotating single stars up to core-collapse and their impact on the early Solar System
Hannah E. Brinkman, J. W. den Hartogh, C. L. Doherty +2
Radioactive nuclei were present in the early Solar System, as inferred from analysis of meteorites. Many are produced in massive stars, either during their lives or their final exp…
Bright single-mode RR Lyrae stars: matching Gaia EDR3 with pulsation and evolutionary models
Geza Kovacs, Behrooz Karamiqucham
We combine observed metallicity, optical and infrared magnitudes with evolutionary and pulsation models to derive average luminosities for 156 single-mode RR Lyrae stars. These lum…
The Fe(n, γ)Fe Cross Section from the Surrogate Ratio Method and Its Effect on the Fe Nucleosynthesis
S. Q. Yan, X. Y. Li, K. Nishio +39
The long-lived Fe (with a half-life of 2.62 Myr) is a crucial diagnostic of active nucleosynthesis in the Milky Way galaxy and in supernovae near the solar system. The neutr…
V899 Mon: a peculiar eruptive young star close to the end of its outburst
Sunkyung Park, Ágnes Kóspál, Fernando Cruz-Sáenz de Miera +15
V899 Mon is an eruptive young star showing characteristics of both FUors and EXors. It reached a peak brightness in 2010, then briefly faded in 2011, followed by a second outburst.…
First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances
László Molnár, Attila Bódi, András Pál +25
The TESS space telescope is collecting continuous, high-precision optical photometry of stars throughout the sky, including thousands of RR Lyrae stars. In this paper, we present r…
Detailed analysis and comparison of different activity metrics
Bálint Maczák, Gergely Vadai, András Dér +2
Actigraphic measurements are an important part of research in different disciplines, yet the procedure of determining activity values is unexpectedly not standardized in the litera…
Properties of slowly rotating asteroids from the Convex Inversion Thermophysical Model
A. Marciniak, J. Ďurech, V. Alí-Lagoa +73
Results from the TESS mission showed that previous studies strngly underestimated the number of slow rotators, revealing the importance of studying those asteroids. For most slowly…
Heavy elements in barium stars
M. P. Roriz, M. Lugaro, C. B. Pereira +4
New elemental abundances for the neutron-capture elements Sr, Nb, Mo, Ru, La, Sm, and Eu are presented for a large sample of 180 barium (Ba) giant stars, a class of chemically pecu…