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Cosmic-ray-driven enhancement of the C0/CO abundance ratio in W 51 C
Yamagishi, Mitsuyoshi; Kaneda, Hidehiro; Shimonishi, Takashi +5 more
We examine spatial variations of the C0$/$CO abundance ratio (XC/CO) in the vicinity of the γ-ray supernova remnant W 51 C, based on [C I] (3P1-3P0), 12CO(1-0), and 13CO(1-0) observations with the ASTE and Nobeyama 45 m telescopes. We find that XC/CO…
The equilibrium shape of (65) Cybele: primordial or relic of a large impact?
Jorda, L.; Carry, B.; Molina, D. +24 more
Context. Cybele asteroids constitute an appealing reservoir of primitive material genetically linked to the outer Solar System, and the physical properties (size and shape) of the largest members can be readily accessed by large (8m class) telescopes.
Aims: We took advantage of the bright apparition of the most iconic member of the Cybele pop…
Stellar angular momentum of disk galaxies at z ≈ 0.7 in the MAGIC survey. I. Impact of the environment
Ciesla, L.; Krajnović, D.; Lemaux, B. C. +6 more
Aims: At intermediate redshift, galaxy groups and clusters are thought to impact galaxy properties such as their angular momentum. We investigate whether the environment has an impact on the galaxies' stellar angular momentum and identify underlying driving physical mechanisms.
Methods: We derived robust estimates of the stellar angular …
New Insights into Variations in Enceladus Plume Particle Launch Velocities from Cassini-VIMS Spectral Data
Hedman, M. M.; Sharma, H.; Vahidinia, S.
Enceladus's plume consists mainly of a mixture of water vapor and solid ice particles that may originate from a subsurface ocean. The physical processes underlying Enceladus's plume particle dynamics are still being debated, and quantifying the particles' size distribution and launch velocities can help constrain these processes. Cassini's Visual …
Comparative analysis of photometric parameters over Apollo landing sites from Terrain Mapping Camera (Chandrayaan-1/2) and lab measured data
Arya, A. S.; Nagori, Rohit; Dagar, Aditya K.
Terrain Mapping Camera (TMC) onboard Chandrayaan-1/2 have provided high spatial resolution (∼5m) panchromatic images in three stereo-views of fore, nadir and aft, (-25⁰, 0⁰, 25⁰), respectively. This study presents the comparative analysis of photometric properties in visible domain from TMC and lab measured data over Apollo 11, 12, 16 and 17 landi…
PEARLS: Near-infrared Photometry in the JWST North Ecliptic Pole Time Domain Field
Grogin, Norman A.; Koekemoer, Anton M.; Smail, Ian +23 more
We present near-infrared (NIR) ground-based Y, J, H, and K imaging obtained in the James Webb Space Telescope (JWST) North Ecliptic Pole Time Domain Field (NEP TDF) using the MMT-Magellan Infrared Imager and Spectrometer on the MMT. These new observations cover a field of approximately 230 arcmin2 in Y, H, and K, and 313 arcmin2
Searching for the nature of stars with debris disks and planets
Cifuentes, C.; Cruz, P.; Roca-Fàbrega, S. +3 more
The nature of the few known solar-mass stars simultaneously containing debris disks and planets remains an open question. A number of works have shown that this property appears to be independent of planetary masses as well as of stellar age, but possible correlations with stellar kinematics and metallicity have not been investigated. In this pape…
Revealing the atmospheres of highly irradiated exoplanets: from ultra-hot Jupiters to rocky worlds
Mansfield, Megan
Spectroscopy of transiting exoplanets has revealed a wealth of information about their atmospheric compositions and thermal structures. In particular, studies of highly irradiated exoplanets at temperatures much higher than those found in our solar system have provided detailed information on planetary chemistry and physics because of the high lev…
Glancing through the debris disk: Photometric analysis of DE Boo with CHEOPS
Guterman, P.; Alonso, R.; Deleuil, M. +76 more
Aims: DE Boo is a unique system, with an edge-on view through the debris disk around the star. The disk, which is analogous to the Kuiper belt in the Solar System, was reported to extend from 74 to 84 AU from the central star. The high photometric precision of the Characterising Exoplanet Satellite (CHEOPS) provided an exceptional opportunity…
Three Eruptions Observed by Remote Sensing Instruments Onboard Solar Orbiter
Susino, Roberto; Romoli, Marco; Andretta, Vincenzo +31 more
On February 21 and March 21 - 22, 2021, the Extreme Ultraviolet Imager (EUI) onboard Solar Orbiter observed three prominence eruptions. The eruptions were associated with coronal mass ejections (CMEs) observed by Metis, Solar Orbiter's coronagraph. All three eruptions were also observed by instruments onboard the Solar-TErrestrial RElations Observ…