Search Publications
The First Short GRB Millimeter Afterglow: The Wide-angled Jet of the Extremely Energetic SGRB 211106A
Kilpatrick, Charles D.; Bhandari, Shivani; Fong, Wen-fai +14 more
We present the discovery of the first millimeter afterglow of a short-duration γ-ray burst (SGRB) and the first confirmed afterglow of an SGRB localized by the GUANO system on Swift. Our Atacama Large Millimeter/Sub-millimeter Array (ALMA) detection of SGRB 211106A establishes an origin in a faint host galaxy detected in Hubble Space Telescope ima…
MICROSCOPE. mission analysis, requirements and expected performance
Bergé, Joel; Chhun, Ratana; Métris, Gilles +16 more
The MICROSCOPE mission aimed to test the weak equivalence principle (WEP) to a precision of 10-15. The WEP states that two bodies fall at the same rate on a gravitational field independently of their mass or composition. In MICROSCOPE, two masses of different compositions (titanium and platinum alloys) are placed on a quasi-circular tra…
Destruction of Long-period Comets
Jewitt, David
We identify a sample of 27 long-period comets for which both nongravitational accelerations and Lyα-based gas production rates are available. Seven of the 27 comets (i.e., ~25%) did not survive perihelion because of nucleus fragmentation or complete disintegration. Empirically, the latter nuclei have the smallest gas production rates and the large…
Rotation of Low-mass Stars in Upper Centaurus-Lupus and Lower Centaurus-Crux with TESS
Powell, Brian P.; Kruse, Ethan; Rebull, L. M. +3 more
We present stellar rotation rates derived from Transiting Exoplanet Survey Satellite (TESS) light curves for stars in Upper Centaurus-Lupus (UCL; ~136 pc, ~16 Myr) and Lower Centaurus-Crux (LCC; ~115 pc, ~17 Myr). We find spot-modulated periods (P) for ~90% of members. The range of light-curve and periodogram shapes echoes that found for other clu…
Influence of grain growth on CO2 ice spectroscopic profiles. Modelling for dense cores and disks
Ysard, N.; Dartois, E.; Noble, J. A. +2 more
Context. Interstellar dust grain growth in dense clouds and protoplanetary disks, even when moderate, affects the observed interstellar ice profiles as soon as a significant fraction of dust grains are in the size range close to the wave vector at the considered wavelength. The continuum baseline correction made prior to analysing ice profiles inf…
TOI-1468: A system of two transiting planets, a super-Earth and a mini-Neptune, on opposite sides of the radius valley
Nagel, E.; Amado, P. J.; Caballero, J. A. +67 more
We report the discovery and characterization of two small transiting planets orbiting the bright M3.0V star TOI-1468 (LSPM J0106+1913), whose transit signals were detected in the photometric time series in three sectors of the TESS mission. We confirm the planetary nature of both of them using precise radial velocity measurements from the CARMENES…
Multifilter photometry of Solar System objects from the SkyMapper Southern Survey
Wolf, C.; Carry, B.; Onken, C. A. +3 more
Context. The populations of small bodies of the Solar System (asteroids, comets, and Kuiper Belt objects) are used to constrain the origin and evolution of the Solar System. Their orbital distribution and composition distribution are both required to track the dynamical pathway from their formation regions to their current locations.
Aims: We…
Simulating the Legacy Survey of Space and Time Stellar Content with TRILEGAL
Clarkson, William I.; Girardi, Léo; Nikutta, Robert +19 more
We describe a large simulation of the stars to be observed by the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). The simulation is based on the TRILEGAL code, which resorts to large databases of stellar evolutionary tracks, synthetic spectra, and pulsation models, added to simple prescriptions for the stellar density and star fo…
Snails across Scales: Local and Global Phase-mixing Structures as Probes of the Past and Future Milky Way
Hogg, David W.; Laporte, Chervin F. P.; Price-Whelan, Adrian M. +3 more
Signatures of vertical disequilibrium have been observed across the Milky Way's (MW's) disk. These signatures manifest locally as unmixed phase spirals in z-v z space ("snails-in-phase"), and globally as nonzero mean z and v z , wrapping around the disk into physical spirals in the x-y plane ("snails-in-space"). We explore…
A hot and luminous source at the site of the fast transient AT2018cow at 2-3 yr after its explosion
Sun, Ning-Chen; Crowther, Paul A.; Maund, Justyn R. +1 more
We report the discovery of a luminous late-time source at the position of the fast blue optical transient AT2018cow on images taken by the Hubble Space Telescope at 714 d and 1136 d after its explosion. This source is detected at both UV and optical wavelengths and has prominent Hα emission. It has a very stable brightness between the two epochs a…