Search Publications

Cyclic changes in the interacting binary RX Cassiopeiae

Jurkovic, M. I.; Mennickent, R. E.; Djurašević, G. +6 more

We analyzed 109 years of published photometry and times of minima of the eclipsing interacting binary RX Cas. The inclusion of 171 previously unnoticed minima confirms the tendency of an increase in the orbital period at a rate of 1.84 s per cycle. We also find evidence of variations in the length of the previously reported long photometric cycle …

An astrometric mass estimate for asteroid (223) Rosa

Kretlow, M.

Context. Outer main belt asteroid (223) Rosa is a possible flyby target of opportunity for the European Space Agency (ESA) JUpiter ICy moons Explorer (JUICE) mission when it passes the asteroid belt on the way to Jupiter. The very low albedo and the featureless red spectra indicate a P-type asteroid in the Tholen taxonomy, though the yet known bul…

Mass assembly and active galactic nucleus activity at z ≳ 1.5 in the dense environment of XDCP J0044.0-2033

Tozzi, P.; Merlin, E.; Bongiorno, A. +4 more

Context. XDCP J0044.0−2033 is the most massive galaxy cluster known at z > 1.5 and its core shows a high density of galaxies, which are experiencing mergers and hosting nuclear activity.
Aims: We present a multi-wavelength study of a region of 24 kpc × 24 kpc located ∼157 kpc from the center of the cluster, for which we have photometric an…

Yet another star in the Albireo system. The discovery of Albireo Ad

Bastian, U.; Schröder, K. -P.; Mittag, M. +1 more

Context. Albireo is a well-known bright visual double star. It is still unclear if the components A and B form a gravitationally bound system. The component Albireo A is itself a binary star. The orbital parameters of the Albireo Aa, Ac system have been determined only recently. Thus, Albireo is still of interest for current research.
Aims: W…

Locating dust and molecules in the inner circumstellar environment of R Sculptoris with MATISSE

Meisenheimer, K.; Augereau, J. -C.; Wolf, S. +50 more

Context. Asymptotic giant branch (AGB) stars are one of the main sources of dust production in the Galaxy. However, it is not yet clear what this process looks like and where the dust happens to be condensing in the circumstellar environment.
Aims: By characterizing the location of the dust and the molecules in the close environment of an AGB…

GS 121-05-037: A new Galactic chimney candidate with signs of triggered star formation

Molina Lera, J. A.; Cichowolski, S.; Suad, L. A.

Aims: The goal of this study is to analyze the H I supershell GS 121-05-037 and its role in triggering star formation.
Methods: To characterize the supershell, we analyzed the H I 21-cm line and the far-infrared emission distributions. In addition, to study the star formation processes related to GS 121-05-037, we used the Gaia survey, t…

Does the Fe L-shell blend bias abundance measurements in intermediate-temperature clusters?

Grillo, Claudio; Gastaldello, Fabio; Bartalucci, Iacopo +5 more

In intermediate-mass galaxy clusters (M = 2 − 4 × 10¹⁴ M_⊙, or equivalently T = 2.5 − 4.5 keV), abundance measurements are almost equally driven by iron K and L transitions at ∼6.7 keV and 0.9 − 1.3 keV, respectively. While K-shell-derived measurements are considered reliable, the resolution of the currently available instrume…

Stellar population in the vicinity of the H II region G331.03-00.15

Gamen, R.; Cichowolski, S.; Cárdenas, S. B. +1 more

We present a multi-wavelength study of the H II region G331.03-00.15, with the aim of identifying the population of massive stars associated with it. The distributions of ionised gas and heated dust both exhibit similar spherical forms, while the bordering photo-dissociating region follows a very ring-like distribution, indicating the presence of …

Detection of the tidal deformation of WASP-103b at 3 σ with CHEOPS (Corrigendum)

Alonso, R.; Bouchy, F.; Deleuil, M. +81 more

Completing the X-ray view of the recently discovered supernova remnant G53.41+0.03

Vink, J.; Zhou, P.; Sun, L. +2 more

Aims: We present a detailed X-ray study of the recently discovered supernova remnant (SNR) G53.41+0.03, which follows up and further expands on the previous, limited analysis of archival data covering a small portion of the SNR.
Methods: With the new dedicated 70 ks XMM-Newton observation we investigate the morphological structure of the…