output
19942026
most citedGATE : a simulation toolkit for PET and SPECT

2.2k citations

Showing astro-ph.EPShow all

67 papers · 1 filter

astro-ph.EP2026

Searching for Embedded Protoplanets with the Keck/NIRC2 Vortex Coronagraph: Confirmation of a Core-accretion Planet in the Narrow Gap of the Elias 2-24 Disk

Andrea Bernardi, Alice Zurlo, Lucas A. Cieza +8

We present high-contrast imaging observations of seven stars obtained with the Keck/NIRC2 vortex coronagraph between 2018 May and June in the and bands. All targets host…

astro-ph.EP2026

Three new exoplanet systems from the Dispersed Matter Planet Project

J. R. Barnes, C. A. Haswell, Z. O. B. Ross +7

We present a radial velocity analysis of three bright, low-activity stars identified by the Dispersed Matter Planet Project (DMPP). We use a Bayesian framework to compare purely Ke…

astro-ph.EP2026

Molecular Similarity and Water Diversity in Coeval Binary Disks: JWST/MIRI Observations of Sz 65 and Sz 66

Jinghuai Yao, Ke Zhang, Andrea Banzatti +10

We present JWST/MIRI Medium Resolution Spectrometer spectra of the wide-separation (projected separation au) binary protoplanetary disks Sz 65 (K7; ) and Sz…

astro-ph.EP2026

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) XI: Gas-dust interactions and radial offsets between micron and millimetre-sized grains

J. Olofsson, M. R. Jankovic, S. Marino +22

The dust observed in debris disks is the result of a collisional cascade initiated from km-sized parent bodies. Using near-infrared to sub-millimeter observations, we can pr…

astro-ph.EP2026★ 3 cited

ALMA 873 m Polarization Observations of the PDS~70 Disk

Hauyu Baobab Liu, Kiyoaki Doi, Simon Casassus +4

At a 112.4 pc distance, the PDS70 protoplanetary disk is a rare case that has been confirmed to host two accreting planets. This makes it the most important laboratory for studying…

astro-ph.EP2026★ 2 cited

Warps survive beyond fly-by encounters in protoplanetary disks. RW Aur A as a case study

C. N. Kimmig, P. Weber, G. P. Rosotti +2

Stellar fly-bys can have multiple dynamical effects on protoplanetary disks, including warping and the excitation of spiral arms. Since observations indicate that warps are common,…

astro-ph.EP2026★ 18 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) II. The radial structure of debris discs

Yinuo Han, Elias Mansell, Jeff Jennings +38

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) was recently completed to cover the lack of high-resolution observations of debris discs and to investigate the preva…

astro-ph.EP2026★ 10 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) V: Comparison between scattered light and thermal emission

J. Milli, J. Olofsson, M. Bonduelle +33

Debris discs are analogues to our own Kuiper belt around main-sequence stars and are therefore referred to as exoKuiper belts. They have been resolved at high angular resolution at…

astro-ph.EP2026★ 8 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) III: The vertical structure of debris disks

Brianna Zawadzki, Anna Fehr, A. Meredith Hughes +37

Debris disks -- collisionally sustained belts of dust and sometimes gas around main sequence stars -- are remnants of planet formation processes and are found in systems ${\gtrsim}…

astro-ph.EP2026★ 4 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) VII: Optically thick gas with broad CO gaussian local line profiles in the HD 121617 disc

A. Brennan, L. Matrà, S. Mac Manamon +24

CO gas has been detected in 20 debris discs. We present ALMA observations of the CO-rich HD 121617 debris disc from the ARKS survey. Using high-resolution Band 7 observations…

astro-ph.EP2026★ 11 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS): VI. Asymmetries and offsets

J. B. Lovell, A. S. Hales, G. M. Kennedy +33

Asymmetries in debris discs provide unique clues to understand the evolution and architecture of planetary systems.** The aim of the ALMA survey to Resolve exoKuiper belt Substruct…

astro-ph.EP2026★ 3 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS). X. Interpreting the peculiar dust rings around HD 131835

M. R. Jankovic, N. Pawellek, J. Zander +27

Dusty discs detected around main-sequence stars are thought to be signs of planetesimal belts in which the dust distribution is shaped by collisional and dynamical processes, inclu…

astro-ph.EP2026★ 8 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) IV: CO gas imaging and overview

S. Mac Manamon, L. Matrà, S. Marino +29

CO gas is detected in a significant number of debris discs, but its origin and evolution remains unclear. Key constraints are its mass and spectro-spatial distribution, which are c…

astro-ph.EP2026★ 3 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) VIII: A dust arc and non-Keplerian gas kinematics in HD 121617

S. Marino, V. Gupta, P. Weber +25

ExoKuiper belts around young A-type stars often host CO gas, whose origin is still unclear. The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) includes 6 of these gas-b…

astro-ph.EP2026★ 18 cited

The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) I: Motivation, sample, data reduction, and results overview

S. Marino, L. Matrà, A. M. Hughes +39

The outer regions of planetary systems host dusty debris discs analogous to the Kuiper belt (exoKuiper belts), which provide crucial constraints on planet formation and evolution p…

astro-ph.EP2025★ 4 cited

Astrometric view of companions in the inner dust cavities of protoplanetary disks

Miguel Vioque, Richard A. Booth, Enrico Ragusa +16

Protoplanetary disks with inner dust cavities (often referred to as "transition disks") are potential signposts of planet formation. We use Gaia astrometry to search for planetary…

astro-ph.EP2025

Resolving the large exoKuiper belt of the HD 126062 debris disc and extended gas emission in its vicinity

James M. Miley, Grant M. Kennedy, Alvaro Ribas +8

Intermediate-mass stars (1-3 Msun) host some of the brightest and best-studied debris discs. This stellar class is also the most frequent host of molecular gas in systems older tha…

astro-ph.EP2025★ 2 cited

Probing dust and grain growth in the optically thick circumbinary ring of V892 Tau

Antoine Alaguero, François Ménard, Nicolás Cuello +5

A considerable proportion of young stars belong to multiple star systems. Constraining the planet formation processes in multiple stellar systems is then key to understand the glob…

astro-ph.EP2025

HD 44892: The youngest (or oldest?) gas-harbouring debris disc around an intermediate mass star

Karolina M. Szewczyk, Olja Panić, Daniela P. Iglesias +2

We present the first detections of gas around a 2.1 Myr old debris disc-bearing intermediate-mass star, HD 44892. Gas is detected both in CO (2-1) emission through ALMA Band…

astro-ph.EP2025★ 11 cited

A young gas giant and hidden substructures in a protoplanetary disk

Álvaro Ribas, Miguel Vioque, Francesco Zagaria +7

The detection of planets in protoplanetary disks has proven to be extremely challenging. In contrast, rings and gaps, usually attributed to planet-disk interactions, have been foun…

astro-ph.EP2025★ 16 cited

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO): VIII. The impact of external photoevaporation on disk masses and radii in Upper Scorpius

Rossella Anania, Giovanni P. Rosotti, Matías Gárate +18

Protoplanetary disk evolution can be deeply influenced by the UV radiation emitted by neighboring massive stars (mainly of spectral type O and B). We show that the process of exter…

astro-ph.EP2025★ 9 cited

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO): VI. Comparison of Dust Evolution Models to AGE-PRO Observations

Nicolas T. Kurtovic, Matias Gárate, Paola Pinilla +18

The potential for planet formation of a circumstellar disk depends on the dust and gas reservoirs, which evolve as a function of the disk age. The ALMA Large Program AGE-PRO has me…

astro-ph.EP2025★ 35 cited

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO): I. Program Overview and Summary of First Results

Ke Zhang, Laura M. Pérez, Ilaria Pascucci +19

We present the ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO), a Large Program of the Atacama Large Millimeter/submillimeter Array (ALMA). AGE-PRO aims to systemati…

astro-ph.EP2024★ 10 cited

Photo-dynamical characterisation of the TOI-178 resonant chain

A. Leleu, J. -B. Delisle, L. Delrez +104

The TOI-178 system consists of a nearby late K-dwarf transited by six planets in the super-Earth to mini-Neptune regime, with radii ranging from 1.2 to 2.9 earth radius and orbital…