output
19962026
most citedPlanck 2013 results. XVI. Cosmological parameters

6.6k citations

Showing 2023 · astro-ph.EPShow all

27 papers · 2 filters

astro-ph.EP2023★ 10 cited

Recurring Activity Discovered on Quasi-Hilda 2009 DQ118

William J. Oldroyd, Colin Orion Chandler, Chadwick A. Trujillo +10

We have discovered two epochs of activity on quasi-Hilda 2009 DQ118. Small bodies that display comet-like activity, such as active asteroids and active quasi-Hildas, are important…

astro-ph.EP2023★ 3 cited

Filament formation due to diffusive instabilities in dusty protoplanetary disks

Konstantin Gerbig, Min-Kai Lin, Marius Lehmann

We report the finding of a new, local diffusion instability in a protoplanetary disk, which can operate in a dust fluid, subject to mass diffusion, shear viscosity, and dust-gas dr…

astro-ph.EP2023★ 7 cited

Sudden extreme obscuration of a Sun-like main-sequence star: evolution of the circumstellar dust around ASASSN-21qj

Jonathan P. Marshall, Steve Ertel, Francisca Kemper +6

ASASSN-21qj is a distant Sun-like star that recently began an episode of deep dimming events after no prior recorded variability. Here we examine archival and newly obtained optica…

astro-ph.EP2023★ 26 cited

The hot main Kuiper belt size distribution from OSSOS

Jean-Marc Petit, Brett Gladman, J. J. Kavelaars +4

Using the absolute detection calibration and abundant detections of the OSSOS (Outer Solar System Origin Survey) project, we provide population measurements for the main Kuiper Bel…

astro-ph.EP2023★ 17 cited

Early Planet Formation in Embedded Disks (eDisk) IX: High-resolution ALMA Observations of the Class 0 Protostar R CrA IRS5N and its surrounding

Rajeeb Sharma, Jes K. Jørgensen, Sacha Gavino +19

We present high-resolution, high-sensitivity observations of the Class 0 protostar RCrA IRS5N as part of the Atacama Large Milimeter/submilimeter Array (ALMA) large program Early P…

astro-ph.EP2023★ 19 cited

Early Planet Formation in Embedded Disks (eDisk) V: Possible Annular Substructure in a Circumstellar Disk in the Ced110 IRS4 System

Jinshi Sai, Hsi-Wei Yen, Nagayoshi Ohashi +25

We have observed the Class 0/I protostellar system Ced110 IRS4 at an angular resolution of (10 au) as a part of the ALMA large program; Early Planet Formation in the…

astro-ph.EP2023★ 17 cited

Spirals and clumps in V960 Mon: signs of planet formation via gravitational instability around an FU Ori star?

P. Weber, S. Pérez, A. Zurlo +11

The formation of giant planets has traditionally been divided into two pathways: core accretion and gravitational instability. However, in recent years, gravitational instability h…

astro-ph.EP2023★ 2 cited

UV Spectral Characterization of Low-Mass Stars With AstroSat UVIT for Exoplanet Applications: The Case Study of HIP 23309

Sukrit Ranjan, Prasanta K. Nayak, J. Sebastian Pineda +1

Characterizing rocky exoplanet atmospheres is a key goal of exoplanet science, but interpreting such observations will require understanding the stellar UV irradiation incident on…

astro-ph.EP2023★ 57 cited

Early Planet Formation in Embedded Disks (eDisk). II. Limited Dust Settling and Prominent Snow Surfaces in the Edge-on Class I Disk IRAS 04302+2247

Zhe-Yu Daniel Lin, Zhi-Yun Li, John J. Tobin +26

While dust disks around optically visible, Class II protostars are found to be vertically thin, when and how dust settles to the midplane are unclear. As part of the Atacama Large…

astro-ph.EP2023★ 39 cited

Early Planet Formation in Embedded Disks (eDisk). IV. The Ringed and Warped Structure of the Disk around the Class I Protostar L1489 IRS

Yoshihide Yamato, Yuri Aikawa, Nagayoshi Ohashi +28

Constraining the physical and chemical structure of young embedded disks is crucial to understanding the earliest stages of planet formation. As part of the Early Planet Formation…

astro-ph.EP2023★ 40 cited

Early Planet Formation in Embedded Disks (eDisk) III: A first high-resolution view of sub-mm continuum and molecular line emission toward the Class 0 protostar L1527 IRS

Merel L. R. van 't Hoff, John J. Tobin, Zhi-Yun Li +25

Studying the physical and chemical conditions of young embedded disks is crucial to constrain the initial conditions for planet formation. Here, we present Atacama Large Millimeter…

astro-ph.EP2023★ 159 cited

Early Planet Formation in Embedded Disks (eDisk). I. Overview of the Program and First Results

Nagayoshi Ohashi, John J. Tobin, Jes K. Jørgensen +34

We present an overview of the Large Program, ``Early Planet Formation in Embedded Disks (eDisk)'', conducted with the Atacama Large Millimeter/submillimeter Array (ALMA). The ubiqu…

astro-ph.EP2023★ 12 cited

Distinguishing Magnetized Disc Winds from Turbulent Viscosity through Substructure Morphology in Planet-forming Discs

Yinhao Wu, Yi-Xian Chen, Haochang Jiang +5

The traditional paradigm of viscosity-dominated evolution of protoplanetary discs has been recently challenged by magnetized disc winds. However, distinguishing wind-driven and tur…

astro-ph.EP2023★ 7 cited

Formation of the warped debris disc around Pictoris

Jeremy L. Smallwood

In light of the recent confirmation of an eccentric orbit giant planet, Pic c, I revisit the formation and evolution of the warped debris disc in the system. Pic c is inter…

astro-ph.EP2023★ 16 cited

Instabilities in dusty non-isothermal proto-planetary discs

Marius Lehmann, Min-Kai Lin

Protoplanetary discs (PPDs) can host a number of instabilities that may partake directly or indirectly in the process of planetesimal formation. These include the Vertical Shear In…

astro-ph.EP2023★ 57 cited

The two rings of (50000) Quaoar

C. L. Pereira, B. Sicardy, B. E. Morgado +66

Quaoar is a classical Trans-Neptunian Object (TNO) with an area equivalent diameter of 1,100 km and an orbital semi-major axis of 43.3 astronomical units. Based on stellar occultat…

astro-ph.EP2023★ 9 cited

How to form compact & other longer-lived planet-induced vortices: VSI, planet migration, or re-triggers, but not feedback

Michael Hammer, Min-Kai Lin

Past computational studies of planet-induced vortices have shown that the dust asymmetries associated with these vortices can be long-lived enough that they should be much more com…

astro-ph.EP2023★ 16 cited

uGMRT observations of the hot-Saturn WASP 69b: Radio-Loud Exoplanet-Exomoon Survey II (RLEES II)

Mayank Narang, Apurva V. Oza, Kaustubh Hakim +7

Exomoons have so far eluded ongoing searches. Several studies have exploited transit and transit timing variations and high-resolution spectroscopy to identify potential exomoon ca…

astro-ph.EP2023★ 6 cited

Multi-wavelength aperture polarimetry of debris disc host stars

Jonathan P. Marshall, Daniel V. Cotton, Kimberly Bott +3

Debris discs around main sequence stars have been extensively characterised from infrared to millimetre wavelengths through imaging, spectroscopic, and total intensity (scattered l…

astro-ph.EP2023★ 19 cited

Stirred but not shaken: a multi-wavelength view of HD 16743's debris disc

Jonathan P. Marshall, Julien Milli, Elodie Choquet +6

Planetesimals -- asteroids and comets -- are the building blocks of planets in protoplanetary discs and the source of dust, ice and gas in debris discs. Along with planets they com…

astro-ph.EP2023★ 18 cited

Exciting spiral arms in protoplanetary discs from flybys

Jeremy L. Smallwood, Chao-Chin Yang, Zhaohuan Zhu +4

Spiral arms are observed in numerous protoplanetary discs. These spiral arms can be excited by companions, either on bound or unbound orbits. We simulate a scenario where an unboun…

astro-ph.EP2023★ 6 cited

Improved companion mass limits for Sirius A with thermal infrared coronagraphy using a vector-apodizing phase plate and time-domain starlight-subtraction techniques

Joseph D. Long, Jared R. Males, Sebastiaan Y. Haffert +12

We use observations with the infrared-optimized MagAO system and Clio camera in 3.9 m light to place stringent mass constraints on possible undetected companions to Sirius A. We…

astro-ph.EP2023★ 5 cited

Multiple Rings and Asymmetric Structures in the Disk of SR 21

Yi Yang, Hauyu Baobab Liu, Takayuki Muto +9

Crescent-like asymmetric dust structures discovered in protoplanetary disks indicate dust aggregations. Thus, the research on them helps us understand the planet formation process.…

astro-ph.EP2023★ 4 cited

New Active Asteroid 2015 VA108: A Citizen Science Discovery

Colin Orion Chandler, William J. Oldroyd, Chadwick A. Trujillo +6

We announce the discovery of activity, in the form of a distinct cometary tail, emerging from main-belt asteroid 2015 VA108. Activity was first identified by volunteers of the Citi…