Search Publications
First detection of the [CII] 158 µm line in the intermediate-velocity cloud Draco
Ossenkopf-Okada, Volker; Simon, Robert; Klein, Bernd +7 more
High-latitude intermediate-velocity clouds (IVCs) are part of the Milky Way's H I halo and originate from either a galactic fountain process or extragalactic gas infall. They are partly molecular and can most of the time be identified in CO. Some of these regions also exhibit high-velocity cloud gas, which is mostly atomic, and gas at local veloci…
Phase-resolved XMM-Newton observations of the massive post-RLOF system HD 149404
Rauw, G.; Rosu, S.; Mossoux, E. +1 more
Context. We investigated the X-ray emission of HD 149404, a 9.81-day period O-star binary in a post-Roche lobe overflow evolutionary stage. X-ray emission of O-star binaries consists of the intrinsic emission of the individual O stars and a putative additional component arising from the wind-wind interaction.
Aims: Phase-locked variations in …
Spatial distributions of extreme-ultraviolet brightenings in the quiet Sun
Barczynski, K.; Peter, H.; Müller, D. +16 more
Context. The identification of large numbers of localised transient extreme ultraviolet (EUV) brightenings, on very small spatial scales, in the quiet Sun corona has been one of the key early results from Solar Orbiter. However, there are still a great deal of unknowns about these events. Aims. In this work, we aim to better understand EUV brighte…
The variation in the response of solar full-disc magnetographs
Solanki, S. K.; Yeo, K. L.; Krivova, N. A.
Context. The utility of full solar disc magnetograms as a long-term record of the photospheric magnetic field requires an understanding of how stable these observations are with time and the systematic differences between the various instruments.
Aims: We compared magnetograms from the KPVT/SPM, SoHO/MDI, SOLIS/VSM, and SDO/HMI with the aim o…
KMT-2021-BLG-2609Lb and KMT-2022-BLG-0303Lb: Microlensing planets identified through signals produced by major-image perturbations
Han, Cheongho; Lee, Chung-Uk; Zang, Weicheng +18 more
Aims. We investigate microlensing data collected by the Korea Microlensing Telescope Network (KMTNet) survey during the 2021 and 2022 seasons to identify planetary lensing events displaying a consistent anomalous pattern. Our investigation reveals that the light curves of two lensing events, KMT-2021-BLG-2609 and KMT-2022-BLG-0303, exhibit a simil…
A photometric and spectroscopic study of eight semi-detached eclipsing binaries
Wang, Liang; Li, Kai; Yi, Tuan +3 more
Context. Semi-detached eclipsing binaries offer an exceptional opportunity to validate the evolutionary models of interacting binaries. This entails determining the absolute parameters and evaluating the evolutionary status of the binary components through simultaneous analysis of both light and radial velocity curves. The Transiting Exoplanet Sur…
The unexpected role of heliospheric boundaries in facilitating interstellar dust penetration at 1-5 AU
Izmodenov, V. V.; Godenko, E. A.
Aims: Interstellar dust (ISD) particles penetrate the heliosphere because of the relative motion of the local interstellar cloud and the Sun. The penetrated particles pass through the heliospheric interface, that is, the region in which solar wind and interstellar plasma interact. As a result, the ISD flow is modified after the passage throug…
DULAG: A DUal and Lensed AGN candidate catalog with the Gaia multipeak method
Liao, S.; Mannucci, F.; Qi, Z. +2 more
Context. A series of studies have demonstrated that the Gaia multipeak (GMP) method is a very efficient technique for selecting active galactic nucleus (AGN) pair candidates. The number of candidates is determined by the size of the input AGN catalog, and is usually limited to spectroscopically confirmed objects. Aims. The objective of this work i…
Binary central stars of planetary nebulae in the Large Magellanic Cloud
Soszyński, I.; Smolec, R.; Szczerba, R. +2 more
Context. Close binary central stars of planetary nebulae (PNe) must have formed through a common envelope evolution during the giant phase experienced by one of the stars. Transfer of the angular momentum from the binary system to the envelope leads to the shortening of the binary separations from the radius of red giant to the radius of the order…
Measuring the gas reservoirs in 108 < M⋆ < 1011 M⊙ galaxies at 1 ≤ z ≤ 3
Pérez-González, Pablo G.; Magdis, Georgios E.; Sánchez-Blázquez, Patricia +7 more
Context. Understanding the gas content in galaxies, along with its consumption and replenishment, is vital to our grasp of the evolution of the Universe. Numerous studies have addressed this notion, utilizing various observational tools and analytical methods. These include examining low-transition 12CO millimeter rotational lines and e…