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Tracking the cold molecular gas contents of galaxies is critical to understand the interplay between star formation and galaxy growth across cosmic time. Observations of the long-wavelength dust continuum, a proxy for the cold gas, are…

First identified in 2016 by JAXA's Akatsuki mission, the discontinuity/disruption is a recurrent wave observed to propagate during decades at the deeper clouds of Venus (47--56 km above the surface), while its absence at the clouds' top…

Rigorous statistical numerical analysis of the response of a nonspherical dust particle ensemble composed of aggregates of astronomical silicate is presented. It is found that the rotational disruption mechanism is not only likely to occur…

Earth and Planetary Astrophysics · Physics 2020-04-23 Joonas Herranen

We present a large, homogeneous catalogue of molecular clouds within 4 kpc from the Sun at low Galactic latitudes ($|b|$ $<$ 10\degr) with unprecedented accurate distance determinations. Based on the three-dimensional dust reddening map and…

Astrophysics of Galaxies · Physics 2020-02-12 B. -Q. Chen , G. -X. Li , H. -B. Yuan , Y. Huang , Z. -J. Tian , H. -F. Wang , H. -W. Zhang , C. Wang , X. -W. Liu

By comparing sensitive Spitzer Space Telescope (SST) infrared and Green Bank Telescope 21 cm observations, we are able to report the first detection of dust emission in Complex C, the largest High Velocity Cloud in the sky. Dust in the…

Astrophysics · Physics 2009-11-11 M. -A. Miville-Deschenes , F. Boulanger , W. T. Reach , A. Noreiga-Crespo

Context. We are creating the AKARI mid-infrared all-sky diffuse maps. Through a foreground removal of the zodiacal emission, we serendipitously detected a bright residual component whose angular size is about 50 x 20 deg. at a wavelength of…

Solar and Stellar Astrophysics · Physics 2017-07-26 D. Ishihara , T. Kondo , H. Kaneda , T. Suzuki , K. Nakamichi , S. Takaba , H. Kobayashi , S. Masuda , T. Ootsubo , J. Pyo , T. Onaka

Convective storms (CS) on Saturn appear as bright clouds, irregular in shape and rapidly changing over time, accompanied by lightning phenomena. They cover a wide range of size scales, from 500 km or less and up to sizes that encircle the…

Earth and Planetary Astrophysics · Physics 2024-01-25 Agustín Sánchez-Lavega , Georg Fischer , Cheng Li , Enrique García-Melendo , Teresa del Río-Gaztelurrutia

We present 3D smoothed particle hydrodynamics simulations of protoplanetary discs undergoing a flyby by a stellar perturber on a parabolic orbit lying in a plane inclined relative to the disc mid-plane. We model the disc as a mixture of gas…

A large fraction of the protoplanetary disks observed with ALMA display multiple well-defined and nearly perfectly circular rings in the continuum, in many cases with substantial peak-to-valley contrast. The DSHARP campaign shows that…

The large quantities of dust that have been found in a number of high redshift galaxies have led to suggestions that core-collapse supernovae (CCSNe) are the main sources of their dust and have motivated the measurement of the dust masses…

Astrophysics of Galaxies · Physics 2021-06-02 Maria Niculescu-Duvaz , Michael J. Barlow , Antonia Bevan , Danny Milisavljevic , Ilse De Looze

The migration of planetary cores embedded in a protoplanetary disk is an important mechanism within planet-formation theory, relevant for the architecture of planetary systems. Consequently, planet migration is actively discussed, yet often…

Earth and Planetary Astrophysics · Physics 2019-11-06 Philipp Weber , Sebastián Pérez , Pablo Benítez-Llambay , Oliver Gressel , Simon Casassus , Leonardo Krapp

The time evolution of atmospheric dust at high southern latitudes on Mars has been determined using observations of the south seasonal cap acquired in the near infrared (1-2.65 {\mu}m) by OMEGA/Mars Express in 2005. Observations at…

Earth and Planetary Astrophysics · Physics 2011-03-07 Mathieu Vincendon , Yves Langevin , François Poulet , Jean-Pierre Bibring , Brigitte Gondet , Denis Jouglet , OMEGA Team

A novel mechanism of the formation of compact dusty clouds in astrophysical environments is discussed. It is shown that the balance of collective forces operating in space dusty plasmas can result in the effect of dust self-confinement,…

Astrophysics of Galaxies · Physics 2015-06-17 V. N. Tsytovich , A. V. Ivlev , A. Burkert , G. E. Morfill

To test the dust torus model for active galactic nuclei directly, we study the extent and morphology of the nuclear dust distribution in the Circinus galaxy using high resolution interferometric observations in the mid-infrared with the…

The discovery of an HI cloud with peculiar properties at equatorial coordinates (J2000) ra=07h49m, dec=04d30m is presented. The HI object was detected at 21cm using the 300-m NAIC Arecibo telescope. Subsequent follow-up high-resolution…

Astrophysics · Physics 2009-11-13 L. Dedes , C. Dedes , P. W. M Kalberla

We present a large catalogue of molecular clouds with accurate distance estimates in the southern sky. Based on the three-dimensional (3D) dust extinction map and the best-fit extinction and distance information of over 17 million stars…

Astrophysics of Galaxies · Physics 2022-02-23 Helong Guo , Bingqiu Chen , Xiaowei Liu

The observed disparity between the radial dependence of the ion and electron densities measured by the Cassini plasma and radio science instruments are used to show that the region between the outer edge of Saturn's main rings and its…

Space Physics · Physics 2017-01-11 Robert E Johnson , Wei-Lin Tseng , Meredith K Elrod , Ann M Persoon

We present and analyse high-quality SCUBA 850- and 450-um images of 14 local spiral galaxies, including the detection of dust well out into the extended disk in many cases. We use these data in conjunction with published far-IR flux…

Astrophysics · Physics 2009-11-10 J. A. Stevens , M. Amure , W. K. Gear

We numerically investigate the migration of dust particles with initial orbits close to those of the numbered asteroids, observed trans-Neptunian objects, and Comet Encke. The fraction of silicate asteroidal particles that collided with the…

Astrophysics · Physics 2010-12-01 S. I. Ipatov , J. C. Mather , P. A. Taylor

We present ALMA observations of the 880um continuum and CO J= 3-2 line emission from the transition disk around [PZ99] J160421.7-213028, a solar mass star in the Upper Scorpius OB association. Analysis of the continuum data indicates that…

Earth and Planetary Astrophysics · Physics 2015-06-22 Ke Zhang , Andrea Isella , John M. Carpenter , Geoffrey A. Blake