Search Publications
Gaia Early Data Release 3. Building the Gaia DR3 source list - Cross-match of Gaia observations
Biermann, M.; Lindegren, L.; Bastian, U. +12 more
Context. The Gaia Early Data Release 3 (Gaia EDR3) contains results derived from 78 billion individual field-of-view transits of 2.5 billion sources collected by the European Space Agency's Gaia mission during its first 34 months of continuous scanning of the sky.
Aims: We describe the input data, which have the form of onboard detections, an…
Reconnection nanojets in the solar corona
Antolin, Patrick; Pagano, Paolo; Testa, Paola +2 more
The solar corona is shaped and mysteriously heated to millions of degrees by the Sun's magnetic field. It has long been hypothesized that the heating results from a myriad of tiny magnetic energy outbursts called nanoflares, driven by the fundamental process of magnetic reconnection. Misaligned magnetic field lines can break and reconnect, produci…
Cloud busting: enstatite and quartz clouds in the atmosphere of 2M2224-0158
Gonzales, Eileen C.; Marley, Mark S.; Faherty, Jacqueline K. +7 more
We present the most detailed data-driven exploration of cloud opacity in a substellar object to-date. We have tested over 60 combinations of cloud composition and structure, particle-size distribution, scattering model, and gas phase composition assumptions against archival 1-15 µm spectroscopy for the unusually red L4.5 dwarf 2MASSW J222443…
Kiloparsec view of a typical star-forming galaxy when the Universe was ∼1 Gyr old. I. Properties of outflow, halo, and interstellar medium
Lutz, D.; Genzel, R.; Förster Schreiber, N. +9 more
We present new Atacama Large Millimeter/Submillimeter Array observations of the [C II] 158 µm transition and the dust continuum in HZ4, a typical star-forming galaxy when the Universe was only ∼1 Gyr old (z ≈ 5.5). Our high ≈0.3″ spatial resolution allows us to study the relationships between [C II] line emission, star formation rate, and fa…
SWEET-Cat 2.0: The Cat just got SWEETer. Higher quality spectra and precise parallaxes from Gaia eDR3
Adibekyan, V.; Hoyer, S.; Sousa, S. G. +13 more
Aims: The catalog of Stars With ExoplanETs (SWEET-Cat) was originally introduced in 2013. Since then many more exoplanets have been confirmed, increasing significantly the number of host stars listed there. A crucial step toward a comprehensive understanding of these new worlds is the precise and homogeneous characterization of their host sta…
A Family Tree of Optical Transients from Narrow-line Seyfert 1 Galaxies
Duev, Dmitry A.; Rusholme, Ben; Stern, Daniel +18 more
The Zwicky Transient Facility (ZTF) has discovered five events (0.01 < z < 0.4) belonging to an emerging class of active galactic nuclei (AGNs) undergoing smooth, large-amplitude, and rapidly rising flares. This sample consists of several transients initially classified as supernovae with narrow spectral lines. However, upon closer inspectio…
Lucy Mission to the Trojan Asteroids: Science Goals
Stern, S. Alan; Noll, Keith S.; Levison, Harold F. +22 more
The Lucy Mission is a NASA Discovery-class mission to send a highly capable and robust spacecraft to investigate seven primitive bodies near both the L4 and L5 Lagrange points with Jupiter: the Jupiter Trojan asteroids. These planetesimals from the outer planetary system have been preserved since early in solar system history…
Hubble WFC3 Spectroscopy of the Habitable-zone Super-Earth LHS 1140 b
Changeat, Quentin; Mori, Mayuko; Edwards, Billy +7 more
Atmospheric characterization of temperate, rocky planets is the holy grail of exoplanet studies. These worlds are at the limits of our capabilities with current instrumentation in transmission spectroscopy and challenge our state-of-the-art statistical techniques. Here we present the transmission spectrum of the temperate super-Earth LHS 1140b usi…
Fast rotating and low-turbulence discs at z ≃ 4.5: Dynamical evidence of their evolution into local early-type galaxies
Magnelli, B.; Gómez-Guijarro, C.; Jiménez-Andrade, E. F. +3 more
Massive starburst galaxies in the early Universe are estimated to have depletion times of ∼100 Myr and thus be able to convert their gas very quickly into stars, possibly leading to a rapid quenching of their star formation. For these reasons, they are considered progenitors of massive early-type galaxies (ETGs). In this paper, we study two high-z…
Estimate on Dust Scale Height from the ALMA Dust Continuum Image of the HD 163296 Protoplanetary Disk
Kataoka, Akimasa; Doi, Kiyoaki
We aim at estimating the dust scale height of protoplanetary disks from millimeter continuum observations. First, we present a general expression of intensity of a ring in a protoplanetary disk and show that we can constrain the dust scale height by the azimuthal intensity variation. Then, we apply the presented methodology to the two distinct rin…