Results 91 to 100 of about 7,087 (197)
ASASSN-24fw: Candidate Gas-rich Circumsecondary Disk Occultation of a Main-sequence Star
The Astronomical JournalDusty disks around planetary and substellar companions in outer reaches of exoplanetary systems can be detected as long-lasting occultations, provided the observer is close to the secondary’s orbital plane. Here we report optical spectroscopy with KOSMOS
Nadia L. Zakamska +26 more
doaj +1 more source
The Astrophysical Journal LettersCatastrophic planetesimal disruptions offer a unique opportunity to study and characterize large planetesimal populations in exoplanetary systems that are not currently detectable by modern observatories.
Arin M. Avsar +4 more
doaj +1 more source
Probing the Spectrum of the Magnetar 4U 0142+61 with JWST
The Astrophysical JournalJWST observed the magnetar 4U 0142+61 with the Mid-Infrared Instrument (MIRI) and Near Infrared Camera (NIRCam) instruments within a 77 minute time interval on 2022 September 20–21.
Jeremy Hare +5 more
doaj +1 more source
Two-stage formation of the Moon from accreting fragmentation and resonance captures
Astronomy & AstrophysicsContext. In the canonical Moon-forming model, a Mars-sized object collided with Earth to produce a disk of debris from which the Moon is believed to have accreted. Aims.
Couturier Jérémy +2 more
doaj +1 more source
A search for debris disks in the Herschel-ATLAS [PDF]
, 2010 Aims. We aim to demonstrate that the Herschel-ATLAS (H-ATLAS) is suitable for a blind and unbiased survey for debris disks by identifying candidate debris disks associated with main sequence stars in the initial science demonstration field of the survey.
Thompson, M. A., Vieiria, J.
core
The Longest-period Young Transiting Exoplanets—A Duo of Puffy Giants inside a Debris Disk
The Astrophysical Journal LettersWe identify two large-radius planets around the F-type star HD 114082 as the longest-period young transiting exoplanets known. From the first transit, detected by NASA’s Transiting Exoplanet Survey Satellite (TESS), and a second dip, spotted by the Next ...
Carlos del Burgo +37 more
doaj +1 more source
MINDS: Detection of an Inner Gas Disk Caused by Evaporating Bodies around HD 172555
The Astrophysical JournalMechanisms such as collisions of rocky bodies or cometary activity give rise to dusty debris disks. Debris disks trace the leftover building blocks of planets, and thus also planetary composition.
Matthias Samland +25 more
doaj +1 more source
The Astrophysical JournalDebris disks, which are optically thin, dusty disks around main-sequence stars, are often found to have structures and/or asymmetries associated with planet–disk interactions.
Katie A. Crotts, Brenda C. Matthews
doaj +1 more source
Extending the ALMA Census of Circumstellar Disks in the Upper Scorpius OB Association
The Astrophysical JournalWe present Atacama Large Millimeter/submillimeter Array (ALMA) Band 7 continuum (340 GHz) and carbon monoxide (CO) J = 3–2 observations for an extended sample of disks in the Upper Scorpius OB Association (Upper Sco, age ∼10 Myr).
John M. Carpenter +4 more
doaj +1 more source