Search Publications
Missions
Journals
Publication Years
Gaia spectroscopic orbits validated with LAMOST and GALAH radial velocities
Mazeh, T.; Faigler, S.; Jorissen, A. +5 more
The recently published Gaia DR3 catalogue of $181\, 327$ spectroscopic binaries (SB) includes the Keplerian elements of each orbit but not the measured radial velocities (RVs) and their epochs. Instead, the catalogue lists a few parameters that characterize the robustness of each solution. In this work, we use two external sources to validate the …
The Deuterium Isotopic Ratio of Water Released From the Martian Caps as Measured With TGO/NOMAD
Vandaele, Ann Carine; Brines, Adrian; Aoki, Shohei +18 more
We report vertical profiles of water and D/H for one Martian year as measured with the TGO/NOMAD instrument. The observations were performed via solar occultation, providing water profiles up to ∼100 km and D/H up to ∼60 km, with a vertical resolution of 1-2 km. The measurements reveal dramatic variability of water and D/H over short timescales an…
A dynamically discovered and characterized non-accreting neutron star-M dwarf binary candidate
Huang, Yang; Liu, Jifeng; Bai, Yu +26 more
Typically, neutron stars are discovered by observations at radio, X-ray or gamma-ray wavelengths. Unlike radio pulsar surveys and X-ray observations, optical time-domain surveys can unveil and characterize exciting but less explored non-accreting and/or non-beaming neutron stars in binaries. Here we report the discovery of such a neutron star cand…
VLT/MUSE Observations of SDSS J1029+2623: Toward a High-precision Strong Lensing Model
Brammer, Gabriel B.; Acebron, Ana; Nonino, Mario +9 more
We present a strong lensing analysis of the galaxy cluster SDSS J1029+2623 at z = 0.588, one of the few currently known lens clusters with multiple images of a background (z = 2.1992) quasar with a measured time delay. We use archival Hubble Space Telescope multiband imaging and new Multi Unit Spectroscopic Explorer follow-up spectroscopy to build…
The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc
Amado, P. J.; Caballero, J. A.; Pallé, E. +64 more
We report the discovery of a multiplanetary system transiting the M0 V dwarf HD 260655 (GJ 239, TOI-4599). The system consists of at least two transiting planets, namely HD 260655 b, with a period of 2.77 d, a radius of Rb = 1.240 ± 0.023 R⊕, a mass of Mb = 2.14 ± 0.34 M⊕, and a bulk density of ρb
J-PLUS: Spectral evolution of white dwarfs by PDF analysis
Hernández-Monteagudo, C.; Gänsicke, B. T.; Carrasco, J. M. +17 more
Aims: We estimated the spectral evolution of white dwarfs with effective temperature using the Javalambre Photometric Local Universe Survey (J-PLUS) second data release (DR2), which provides 12 photometric optical passbands over 2176 deg2.
Methods: We analyzed 5926 white dwarfs with r ≤ 19.5 mag in common between a white dwarf…
New Photometric Calibration of the Wide Field Camera 3 Detectors
Mack, Jennifer; Calamida, Annalisa; Medina, Jennifer +6 more
We present a new photometric calibration of the WFC3-UVIS and WFC3-IR detectors based on observations collected from 2009 to 2020 for four white dwarfs-namely, GRW +70 5824, GD 153 , GD 71 , G191B2B-and a G-type star, P330E. These calibrations include recent updates to the Hubble Space Telescope primary standard white dwarf models and a new refere…
Stellar Loci. V. Photometric Metallicities of 27 Million FGK Stars Based on Gaia Early Data Release 3
Huang, Yang; Niu, Zexi; Beers, Timothy C. +3 more
We combine LAMOST DR7 spectroscopic data and Gaia EDR3 photometric data to construct high-quality giant (0.7 < (BP - RP) < 1.4) and dwarf (0.5 < (BP - RP) < 1.5) samples in the high Galactic latitude region, with precise corrections for magnitude-dependent systematic errors in the Gaia photometry and careful reddening corrections using…
Limits on the mass and initial entropy of 51 Eri b from Gaia EDR3 astrometry
Dupuy, Trent J.; Brandt, Timothy D.; Brandt, G. Mirek
51 Eri b is one of the only young planets consistent with a wide range of possible initial entropy states, including the cold-start scenario associated with some models of planet formation by core accretion. The most direct way to constrain the initial entropy of a planet is by measuring its luminosity and mass at a sufficiently young age that the…
Bright, relatively isolated star clusters in PHANGS-HST galaxies: Aperture corrections, quantitative morphologies, and comparison with synthetic stellar population models
Kruijssen, J. M. Diederik; Rosolowsky, Erik; Glover, Simon C. O. +14 more
Using PHANGS-HST NUV-U-B-V-I imaging of 17 nearby spiral galaxies, we study samples of star clusters and stellar associations, visually selected to be bright and relatively isolated, for three purposes: to compute aperture corrections for star cluster photometry, to explore the utility of quantitative morphologies in the analysis of clusters and a…