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The Y dwarf population with HST: unlocking the secrets of our coolest neighbours -- I. Overview & First astrometric results
Clemence Fontanive, Luigi R. Bedin, Daniella C. Bardalez Gagliuffi
In this paper we present our project that aims at determining accurate distances and proper motions for the Y brown dwarf population using the Hubble Space Telescope. We validate t…
The K2 M67 Study: Precise Mass for a Turnoff Star in the Old Open Cluster M67
Eric L. Sandquist, David W. Latham, Robert. D. Mathieu +8
We present a study of the bright detached eclipsing main sequence binary WOCS 11028 (Sanders 617) in the open cluster M67. Although the binary has only one eclipse per orbital cycl…
2D kinematics of massive stars near the Galactic Center
Mattia Libralato, Daniel J. Lennon, Andrea Bellini +12
The presence of massive stars (MSs) in the region close to the Galactic Center (GC) poses several questions about their origin. The harsh environment of the GC favors specific form…
Cloud Atlas: Unraveling the vertical cloud structure with the time-series spectrophotometry of an unusually red brown dwarf
Ben W. P. Lew, Dániel Apai, Mark Marley +8
Rotational modulations of emission spectra in brown dwarf and exoplanet atmospheres show that clouds are often distributed non-uniformly in these ultracool atmospheres. The spatial…
A PSF-based Approach to TESS High quality data Of Stellar clusters (PATHOS) -- II. Search for exoplanets in open clusters of the southern ecliptic hemisphere and their frequency
D. Nardiello, G. Piotto, M. Deleuil +7
The scope of the project "A PSF-based Approach to TESS High Quality data Of Stellar clusters" (PATHOS) is the extraction and analysis of high-precision light curves of stars in ste…
Interstellar Comet 2I/Borisov exhibits a structure similar to native Solar System comets
F. Manzini, V. Oldani, P. Ochner +2
We processed images taken with the Hubble Space Telescope (HST) to investigate any morphological features in the inner coma suggestive of a peculiar activity on the nucleus of the…