Search Publications
Missions
Journals
Publication Years
Refining the age, emplacement and alteration scenarios of the olivine-rich unit in the Nili Fossae region, Mars
Mangold, N.; Quantin-Nataf, C.; Millot, C. +8 more
The Nili Fossae region of Mars exhibits from remote sensing spectral data the largest exposures of olivine-rich materials on the planet. However, it is not clearly constrained how and when these terrains formed. Some of the proposed scenarios favor a mode of formation closely related to Isidis impact basin: either under intense effusive volcanism …
Keck Observations Confirm a Super-Jupiter Planet Orbiting M Dwarf OGLE-2005-BLG-071L
Lu, Jessica R.; Cole, Andrew A.; Udalski, Andrzej +10 more
We present adaptive optics imaging from the NIRC2 instrument on the Keck II telescope that resolves the exoplanet host (and lens) star as it separates from the brighter source star. These observations yield the K-band brightness of the lens and planetary host star, as well as the lens-source relative proper motion, ${{\boldsymbol{\mu }}}_{\mathrm{…
Obliquity Constraints on an Extrasolar Planetary-mass Companion
Knutson, Heather A.; Morley, Caroline V.; Bowler, Brendan P. +8 more
We place the first constraints on the obliquity of a planetary-mass companion outside of the solar system. Our target is the directly imaged system 2MASS J01225093-2439505 (2M0122), which consists of a 120 Myr 0.4 M⊙ star hosting a 12-27 MJ companion at 50 au. We constrain all three of the system's angular-momentum vectors: h…
GOODS-ALMA: The slow downfall of star formation in z = 2-3 massive galaxies
Magnelli, B.; Daddi, E.; Elbaz, D. +34 more
We investigate the properties of a sample of 35 galaxies, detected with the Atacama Large Millimeter/Submillimeter Array (ALMA) at 1.1 mm in the GOODS-ALMA field (area of 69 arcmin2, resolution = 0.60″, rms ≃ 0.18 mJy beam-1). Using the ultraviolet-to-radio deep multiwavelength coverage of the GOODS-South field, we fit the sp…
A 3D view of the Taurus star-forming region by Gaia and Herschel. Multiple populations related to the filamentary molecular cloud
Franciosini, E.; Randich, S.; Sicilia-Aguilar, A. +2 more
Context. Taurus represents an ideal region to study the three-dimensional distribution of the young stellar population and relate it to the associated molecular cloud.
Aims: The second Gaia data release (DR2) enables us to investigate the Taurus complex in three dimensions, starting from a previously defined robust membership. The molecular c…
A disk-dominated and clumpy circumgalactic medium of the Milky Way seen in X-ray emission
Kaaret, P.; Kuntz, K. D.; Koutroumpa, D. +7 more
The Milky Way galaxy is surrounded by a circumgalactic medium1 that may play a key role in galaxy evolution as the source of gas for star formation and a repository of metals and energy produced by star formation and nuclear activity2. The circumgalactic medium may also be a repository for baryons seen in the early universe, …
Chemical evolution of the Milky Way: constraints on the formation of the thick and thin discs
Palla, M.; Matteucci, F.; Spitoni, E. +2 more
We study the evolution of Milky Way thick and thin discs in the light of the most recent observational data. In particular, we analyse abundance gradients of O, N, Fe, and Mg along the thin disc as well as the [Mg/Fe] versus [Fe/H] relations and the metallicity distribution functions at different Galactocentric distances. We run several models sta…
SPCANet: Stellar Parameters and Chemical Abundances Network for LAMOST-II Medium Resolution Survey
Luo, A. -Li; Hou, Wen; Zhang, Shuo +6 more
The fundamental stellar atmospheric parameters (Teff and log g) and 13 chemical abundances are derived for medium-resolution spectroscopy from Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Medium Resolution Survey (MRS) data sets with a deep-learning method. The neural networks we designed, named SPCANet, precisely …
The Sloan Digital Sky Survey extended point spread functions
Trujillo, Ignacio; Román, Javier; Infante-Sainz, Raúl
A robust and extended characterization of the point spread function (PSF) is crucial to extract the photometric information produced by deep imaging surveys. Here, we present the extended PSFs of the Sloan Digital Sky Survey (SDSS), one of the most productive astronomical surveys of all time. By stacking ∼1000 images of individual stars with diffe…
The XMM-Newton serendipitous survey. X. The second source catalogue from overlapping XMM-Newton observations and its long-term variable content
Motch, C.; Page, M. J.; Ballet, J. +12 more
Context. The XMM-Newton Survey Science Centre Consortium (SSC) develops software in close collaboration with the Science Operations Centre to perform a pipeline analysis of all XMM-Newton observations. In celebration of the twentieth anniversary of the XMM-Newton launch, the SSC has compiled the fourth generation of serendipitous source catalogues…