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The origin of free-floating planets
Miret-Roig, Núria
Free-floating planets (FFPs) are the lightest products of star formation and they carry important information on the initial conditions of the environment in which they were formed. They were first discovered in the 2000 s but still few of them have been identified and confirmed due to observational challenges. This is a review of the last advance…
The Positron Puzzle
Siegert, Thomas
The Positron Puzzle is a half-century old conundrum about the origin of the Galactic
Making waves in massive star asteroseismology
Bowman, Dominic M.
Massive stars play a major role not only in stellar evolution but also galactic evolution theory. This is because of their dynamical interaction with binary companions, but also because their strong winds and explosive deaths as supernovae provide chemical, radiative and kinematic feedback to their environments. Yet this feedback strongly depends …
Detection of wide binary and multiple nuclei of planetary nebulae using the Gaia DR3
Ali, A.; Khalil, J. M.; Mindil, A.
Context: this paper describes the detection of wide binary and multiple central stars (CSs) of Galactic planetary nebulae (PNe) using the most up-to-date data available from the Gaia Data Release 3 (Gaia DR3). Aims: the objective of this study is to benefit from the Gaia DR3's reliable measurements of parallax and proper motion to reveal the binar…
Fabry-Pérot etalons in solar astronomy. A review
del Toro Iniesta, J. C.; Orozco Suárez, D.; Bailén, F. J.
During the last decades, the use of Fabry-Pérot etalons as filtergraphs has become frequent in solar instruments. The main reason is that they stand out for offering quasi-monochromatic, two-dimensional fields of view much higher than those provided by conventional slit-based spectrographs in a given time interval. Unfortunately, they also present…
Variable stars in the field of the Galactic bulge globular cluster NGC 6522
Arellano Ferro, A.; Luna, A.; Prudil, Z. +2 more
We present a comprehensive analysis of the variable stars projected on the field of the Galactic bulge globular cluster NGC 6522, offering valuable insights into their characteristics. Using proper motions from Gaia-DR3, we aim to distinguish between field stars and true cluster members. For an accurate color-magnitude diagram of the member stars,…
Revealing the atmospheres of highly irradiated exoplanets: from ultra-hot Jupiters to rocky worlds
Mansfield, Megan
Spectroscopy of transiting exoplanets has revealed a wealth of information about their atmospheric compositions and thermal structures. In particular, studies of highly irradiated exoplanets at temperatures much higher than those found in our solar system have provided detailed information on planetary chemistry and physics because of the high lev…
A clustering study of the old open cluster Trumpler 19
Gao, Xinhua; Fang, Dan
In this paper, we investigate the spatial structure and dynamical state of the poorly studied old (
Radio and mid-infrared properties of the blazar J1419–0838
Frey, Sándor; Gabányi, Krisztina Éva; Perger, Krisztina
The radio quasar NVSS J141922‑083830 (J1419‑0838) was initially classified as an uncategorised blazar-type object, following its detection in the
Comprehensive study of the Galactic Planetary Nebula NGC 2792
Ali, A.; Snaid, S.; Alruhaili, A.
This paper describes integral field unit (IFU) spectroscopic observations of the Galactic planetary nebula (PN) NGC 2792. The physical conditions, chemical composition, and kinematic properties are discussed and found to be in good agreement with prior long-slit-based investigations. The intensity of the He II line indicates that the nebula is of …