Search Publications
Missions
Journals
Publication Years
Serendipitous observation of a white dwarf companion to a JWST/MIRI coronagraphic calibrator
Boccaletti, Anthony; Blouin, Simon; Pearce, Logan A. +3 more
We present the unplanned detection of a white dwarf companion to the star HD 218261 in mid-infrared (10-16
Martian hydrosphere: A brief overview of water on Mars
Gopalchetty, Brahma
Understanding the status of water on Mars is crucial for evaluating its capacity to support life and to serve as a resource for future possible human exploration. Investigations have been carried out in the past to find signs of water in its past or present states. It is generally agreed that Mars had significant amounts of water early in its exis…
A Link Between White Dwarf Pulsars and Polars: Multiwavelength Observations of the 9.36-minute Period Variable Gaia22ayj
Mori, Kaya; Riddle, Reed; Szkody, Paula +30 more
White dwarfs (WDs) are the most abundant compact objects, and recent surveys have suggested that over a third of WDs in accreting binaries host a strong (B ≳ 1 MG) magnetic field. However, the origin and evolution of WD magnetism remain under debate. Two WD pulsars, AR Sco and J191213.72–441045.1 (J1912), have been found, which are non-accreting b…
MOCKA – A PLATO mock asteroseismic catalogue: Simulations for gravity-mode oscillators
Aigrain, S.; Plachy, E.; De Ridder, J. +14 more
Context. With the PLAnetary Transits and Oscillation of stars (PLATO) space mission set for launch in December 2026 by the European Space Agency (ESA), a new photometric legacy and a future of new scientific discoveries await the community. By exploring scientific topics outside of the core science program, the PLATO complementary science program …
Binary and grouped open clusters: A new catalogue
Baume, G.; Feinstein, C.; Palma, T. +1 more
Context. Understanding the formation and evolution of star clusters in the Milky Way requires precise identification of clusters that form binary or multiple systems. Such systems offer valuable insight into the dynamical processes and interactions that influence cluster evolution. Aims. This study aims to detect and classify star clusters in the …
Determining the Nature of IC 10 X-2: A Comprehensive Study of the Optical/IR Emission from an Extragalactic BeHMXB
Gelfand, Joseph D.; Heinke, Craig; Lewis, Fraser +7 more
We present a comprehensive analysis of the optical and infrared (IR) properties of high-mass X-ray binary (HMXB) IC 10 X-2, classified as a supergiant HMXB and superfast X-ray transient by previous work. Our analysis of regular (daily and weekly) observations by both the Zwicky Transient Facility and Las Cumbres Observatory over a 5 yr period indi…
The disrupting and growing open cluster spiral arm patterns of the Milky Way
Luo, Yangping; Wang, Kun; Liu, Xiaochen +1 more
Star clusters provide unique advantages for investigating Galactic spiral arms, particularly due to their precise ages, positions, and kinematic properties, which are further enhanced by ongoing updates from the astrometric data. In this study, we employ the latest extensive catalogue of open clusters from Gaia DR3 to examine the positional deviat…
Radii, masses, and transit-timing variations of the three-planet system orbiting the naked-eye star TOI-396
Fridlund, M.; Pallé, E.; Gandolfi, D. +38 more
Context. TOI-396 is an F6 V bright naked-eye star (V ≈ 6.4) orbited by three small (Rp ≈ 2 R⊕) transiting planets discovered thanks to space-based photometry from two TESS sectors. The orbital periods of the two innermost planets, namely TOI-396 b and c, are close to the 5:3 commensurability (Pb ~ 3.6 d and Pc…
Two Earth-size Planets and an Earth-size Candidate Transiting the nearby Star HD 101581
Butler, R. Paul; Vanderburg, Andrew; Brahm, Rafael +43 more
We report the validation of multiple planets transiting the nearby (d = 12.8 pc) K5V dwarf HD 101581 (GJ 435, TOI–6276, TIC 397362481). This system consists of at least two Earth-size planets whose orbits are near a mutual 4:3 mean-motion resonance, HD 101581 b (
Multi-wavelength study of 1eRASS J085039.9‑421151 with eROSITA, NuSTAR, and X-shooter
Santangelo, A.; Heber, U.; Dauser, T. +23 more
The eROSITA instrument on board Spectrum-Roentgen-Gamma (SRG) has completed four scans of the X-ray sky, leading to the detection of almost one million X-ray sources in eRASS1 alone, including multiple new X-ray binary candidates. We report on analysis of the X-ray binary 1eRASS J085039.9‑421151, using a ∼55 ks long NuSTAR observation, following i…