Search Publications
Missions
Journals
Publication Years
Catalog of Variable Stars in the WD 0009\boldsymbol{+} \boldsymbol{+}
Galazutdinov, G. A.; Beskin, G. M.; Romanyuk, I. I. +15 more
The light curves for almost 50 thousand stars with magnitudes
Synthetic light curves and orbital solutions of two eclipsing binary systems, V675 Lac and USNO-A2.0 1425-02035807
Elkhateeb, M. M.; Alenazi, M. S.
We carried out light curve modeling for all-light curves of the variable W UMa systems V675 Lac and USNO-2035807 using ground-based observations, the Gaia 3rd data release, and ZTF databases by means of the W-D code. The accepted models revealed absolute and physical parameters, which showed that the primary components in both systems are massive …
Exocomet orbital distribution around β Pictoris
Heller, René
The ~23 Myr young star β Pictoris (β Pic) is a laboratory for planet formation studies because of its observed debris disk, its directly imaged super-Jovian planets β Pic b and c, and the evidence of extrasolar comets that regularly transit in front of the star. The most recent evidence of exocometary transits around β Pic came from stellar photom…
A benchmark rapidly oscillating chemically peculiar (roAp) star: α Cir
Kallinger, T.; Stassun, K. G.; Kuschnig, R. +1 more
Context. The brightest chemically peculiar magnetic (mCP) star, α Cir, is also pulsating. Precise photometric and spectroscopic data, preferably with a long time base, are needed to investigate its evolutionary aspects as well. The present investigation of α Cir offers a space-based high-precision photometry study with high time resolution, coveri…
A 100 kpc ram pressure tail trailing the group galaxy NGC 2276
Botteon, A.; van Weeren, R. J.; Ignesti, A. +5 more
We present the discovery of a 100 kpc low-frequency radio tail behind the nearby group galaxy, NGC 2276. The extent of this tail is a factor of ten larger than previously reported from higher-frequency radio and X-ray imaging. The radio morphology of the galaxy disc and tail suggest that the tail was produced via ram-pressure stripping, cementing …
Impact of the Turbulent Vertical Mixing on Chemical and Cloud Species in the Venus Cloud Layer
Marcq, Emmanuel; Stolzenbach, Aurélien; Lefèvre, Franck +3 more
The Venusian atmosphere hosts a 10 km deep convective layer that has been studied by various spacecrafts. However, the impact of the strong vertical mixing on the chemistry of this region is still unknown. This study presents the first realistic coupling between resolved small-scale turbulence and a chemical network. The resulting vertical mixing …
Insight on AGB Mass-Loss and Dust Production from PNe
Tosi, Silvia
The asymptotic giant branch (AGB) phase, experienced by low- and intermediate-mass stars (LIMSs), plays a crucial role in galaxies due to its significant dust production. Planetary nebulae (PNe) offer a novel perspective, providing valuable insights into the dust production mechanisms and the evolutionary history of LIMSs. We selected a sample of …
Forward modelling low-spectral-resolution Cassini/CIRS observations of Titan
Nixon, Conor A.; Irwin, Patrick G. J.; Teanby, Nicholas A. +1 more
The Composite InfraRed Spectrometer (CIRS) instrument onboard the Cassini spacecraft performed 8.4 million spectral observations of Titan at resolutions between 0.5-15.5 cm-1. More than 3 million of these were acquired at a low spectral resolution (SR) (13.5-15.5 cm-1), which have excellent spatial and temporal coverage in ad…
Water vapour masers in long-period variable stars. III. Mira variables U Her and RR Aql
Engels, D.; Winnberg, A.; Brand, J.
Context. Water maser emission is often found in the circumstellar envelopes of evolved stars, that is, asymptotic giant branch stars and red supergiants with oxygen-rich chemistry. The H2O emission shows strong variability in evolved stars of both of these types.
Aims: We wish to understand the reasons for the strong variability of…
Polarization of active galactic nuclei with significant VLBI-Gaia displacements
Blinov, Dmitry; Arshinova, Arina
Context. Numerous studies have reported significant displacements in the coordinates of active galactic nuclei (AGNs) between measurements using the very-long-baseline-interferometry (VLBI) technique and those obtained by the Gaia space observatory. There is consensus that these discrepancies do indeed manifest astrometrically resolved sub-compone…