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A JWST Project on 47 Tucanae. Overview, photometry, and early spectroscopic results of M dwarfs and observations of brown dwarfs
(Institute of Physics (IOP), 2024-04-01)
Article
Open AccessJames Webb Space Telescope (JWST) observations have been demonstrated to be efficient in detecting multiple stellar populations in globular clusters (GCs) in the low-mass regime of M dwarfs. We present an overview, and ... -
White dwarf random forest classification through Gaia spectral coefficients
(EDP Sciences, 2023-11)
Article
Open AccessContext. The third data release of Gaia has provided approximately 220 million low resolution spectra. Among these, about 100 000 correspond to white dwarfs. The magnitude of this quantity of data precludes the possibility ... -
3D hydrodynamic simulations of white dwarf–main-sequence star collisions – I. Head-on collisions
(Oxford University Press, 2024-11-01)
Article
Open AccessRecently inaugurated telescopes, such as the MeerKAT radio telescope and the upcoming Rubin Observatory Legacy Survey of Space and Time, will be able to detect millions of transient events in the night sky. Stellar collisions ... -
Hydrodynamical shear mixing in subsonic boundary layers and its role in the thermonuclear explosion of classical novae
(EDP Sciences, 2024-10-22)
Article
Open AccessContext. The transition zone between the white dwarf (WD) envelope and a circumstellar accretion disk in classical novae, the boundary layer, is a region of strong dissipation and intense vorticity. In this strongly sheared ... -
Thermonuclear 28P(p, y)29S reaction rate and astrophysical implication in ONe nova explosion
(EDP Sciences, 2024-07-01)
Article
Open AccessContext. An accurate 28P(p, ¿)29S reaction rate is crucial to defining the nucleosynthesis products of explosive hydrogen burning in ONe novae. Using the recently released nuclear mass of 29S, together with a shell model ... -
Photometric follow-up of 43 new eclipsing white dwarf plus main-sequence binaries from the ZTF survey
(Oxford University Press, 2023-02-27)
Article
Open AccessWide-field time-domain photometric sky surveys are now finding hundreds of eclipsing white dwarf plus M dwarf binaries, a population encompassing a wealth of information and potential insight into white dwarf and close ... -
The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation
(Oxford University Press, 2023-03-11)
Article
Open AccessWEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree field-of-view prime-focus corrector system, ... -
White dwarf spectral type-temperature distribution from Gaia DR3 and the Virtual Observatory
(EDP Sciences, 2023-09-21)
Article
Open AccessContext. The characterization of white dwarf atmospheres is crucial for accurately deriving stellar parameters such as effective temperature, mass, and age. However, the inclusion of physical processes such as convective ... -
Spectral classification of the 100 pc white dwarf population from Gaia-DR3 and the virtual observatory
(Oxford University Press, 2023-02-01)
Article
Open AccessThe third data release of Gaia has provided low resolution spectra for 100 000 white dwarfs (WDs) that, together with the excellent photometry and astrometry, represent an unrivalled benchmark for the study of this ... -
The unusual planetary nebula nucleus in the Galactic open cluster M37 and six further hot white dwarf candidates
(EDP Sciences, 2023-10-01)
Article
Open AccessPlanetary nebulae in Galactic open star clusters are rare objects; only three are known to date. They are of particular interest because their distance can be determined with high accuracy, allowing one to characterize the ... -
NICER Observations of thermonuclear bursts from 4U 1728-34: detection of oscillations prior to the onset of two bursts
(Institute of Physics (IOP), 2023-11-13)
Article
Open AccessWe present temporal and time-resolved spectral analyses of all the thermonuclear X-ray bursts observed from the neutron star low-mass X-ray binary 4U 1728-34 with NICER from 2017 June to 2019 September. In total, we detected ... -
Main-sequence companions to white dwarfs - II. The age-activity-rotation relation from a sample of Gaia common proper motion pairs
(Oxford University Press, 2023-10-06)
Article
Open AccessMagnetic activity and rotation are related to the age of low-mass main-sequence stars. To further constrain these relations, we study a sample of 574 main-sequence stars members of common proper motion pairs with white ...
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