Search Publications
Missions
Journals
Publication Years
Two Massive Jupiters in Eccentric Orbits from the TESS Full-frame Images
Butler, R. Paul; Vanderburg, Andrew; Bieryla, Allyson +43 more
We report the discovery of two short-period massive giant planets from NASA's Transiting Exoplanet Survey Satellite (TESS). Both systems, TOI-558 (TIC 207110080) and TOI-559 (TIC 209459275), were identified from the 30 minute cadence full-frame images and confirmed using ground-based photometric and spectroscopic follow-up observations from TESS's…
Radial velocity survey for planets around young stars (RVSPY). A transiting warm super-Jovian planet around HD 114082, a young star with a debris disk
Trifonov, Trifon; Henning, Thomas; Reffert, Sabine +7 more
Aims: We aim to detect planetary companions to young stars with debris disks via the radial velocity method.
Methods: We observed HD 114082 during April 2018-August 2022 as one of the targets of our RVSPY program (Radial Velocity Survey for Planets around Young stars). We use the FEROS spectrograph, mounted to the MPG/ESO 2.2 m telescope…
Starbursts with suppressed velocity dispersion revealed in a forming cluster at z = 2.51
Magnelli, B.; Daddi, E.; Elbaz, D. +19 more
One of the most prominent features of galaxy clusters is the presence of a dominant population of massive ellipticals in their cores. Stellar archaeology suggests that these gigantic beasts assembled most of their stars in the early Universe via starbursts. However, the role of dense environments and their detailed physical mechanisms in triggerin…
ALMA Uncovers Highly Filamentary Structure toward the Sgr E Region
Mills, E. A. C.; Anderson, L. D.; Battersby, C. +7 more
We report on the discovery of linear filaments observed in the CO(1-0) emission for a ~2' field of view toward the Sgr E star-forming region, centered at (l, b) = (358.°720, 0.°011). The Sgr E region is thought to be at the turbulent intersection of the "far dust lane" associated with the Galactic bar and the Central Molecular Zone (CMZ). This reg…
Orbital Observations of a Marker Horizon at Gale Crater
Arvidson, Raymond E.; Weitz, Catherine M.; Grant, John A. +5 more
A dark-toned, indurated, smooth horizon, and (or) bed (herein called "marker horizon") is exposed across much of the northwestern, southwestern, and southeastern portions of Mount Sharp in Gale crater. Compact Reconnaissance Imaging Spectrometer for Mars spectra taken from the marker horizon exhibit evidence for the presence of high calcium pyroxe…
X-ray flares of the young planet host Ds Tucanae A
Micela, G.; Reale, F.; Benatti, S. +5 more
The discovery of planets around young stars has spurred novel studies of the early phases of planetary formation and evolution. Stars are strong emitters at X-ray and UV wavelengths in their first billion of years and this strongly affects the evaporation, thermodynamics, and chemistry in the atmospheres of the young planets orbiting around them. …
Constraining the CME Core Heating and Energy Budget with SOHO/UVCS
Reeves, Katharine K.; Raymond, John C.; Shen, Chengcai +4 more
We describe the energy budget of a coronal mass ejection (CME) observed on 1999 May 17 with the Ultraviolet Coronagraph Spectrometer (UVCS). We constrain the physical properties of the CME's core material as a function of height along the corona by using the spectra taken by the single-slit coronagraph spectrometer at heliocentric distances of 2.6…
Fluorine Abundances in the Galactic Nuclear Star Cluster
Cunha, Katia; Smith, Verne V.; Daflon, Simone +4 more
Abundances of fluorine (19F), as well as isotopic ratios of 16O/17O, are derived in a sample of luminous young (~107-108 yr) red giants in the Galactic center (with galactocentric distances ranging from 0.6-30 pc), using high-resolution infrared spectra and vibration-rotation lines of H19…
Hubble Space Telescope Proper Motion (HSTPROMO) Catalogs of Galactic Globular Clusters. VII. Energy Equipartition
Anderson, Jay; van der Marel, Roeland P.; Alfaro-Cuello, Mayte +3 more
We examine the degree of energy equipartition in nine Galactic globular clusters using proper motions measured with the Hubble Space Telescope. For most clusters in the sample, this is the first energy equipartition study ever performed. This study is also the largest of its kind, albeit with only nine clusters. We begin by rigorously cleaning the…
Shock-accelerated electrons during the fast expansion of a coronal mass ejection
Vainio, R.; Kilpua, E. K. J.; Kumari, A. +2 more
Context. Some of of the most prominent sources for energetic particles in our Solar System are huge eruptions of magnetised plasma from the Sun called coronal mass ejections (CMEs), which usually drive shocks that accelerate charged particles up to relativistic energies. In particular, energetic electron beams can generate radio bursts through the…