Results 61 to 70 of about 3,177 (205)
Clusters Stagnating During Condensation: Metastable Material or a Separate State of Matter?
Annalen der Physik, Volume 537, Issue 10, October 2025.Condensation stagnation, that is, the existence of a delay between nucleation and growth during the gas‐phase particle formation, is a crucial phenomenon, which manifests itself as the presence of supercritical clusters in resulting particulates. The light emission signature of stagnant clusters is identified in the magnesium particle flame in air, and,
Nicholas R. Jaramillo +4 more
wiley +1 more source
Near-infrared Integral-field Spectroscopy of the Wind Forming Region of CW Leo
The Astronomical JournalThe circumstellar envelope of the carbon star CW Leo exhibited various unexpected changes in recent optical imaging observations. We have performed a follow-up observation using the Near-infrared Integral-Field Spectrograph (NIFS) equipped on the Gemini ...
Hyosun Kim +3 more
doaj +1 more source
Characterizing circumstellar disk around young stars [PDF]
, 2010 The circumstellar disks play a fundamental role in star and planet formation process. Studies on circumstellar disks are generally carried on following two viable approaches: "statistical" studies, where a large samples of sources are measured to ...
Schisano, Eugenio
core
The Line Emission from the Circumstellar Gas around SN 1987A [PDF]
The Astrophysical Journal, 1996 38 pages PostScript, 7 PostScript figures may be retrieved from ftp://www.astro.su.se/pub/supernova/lf95_87A/ Accepted for publication in ...
Lundqvist, P., Fransson, C.
openaire +2 more sources
Probing planetary system histories via observations, experiments, and modelling of circumstellar gas and dust [PDF]
, 2022 Circumstellar disks of gas and dust are integral parts of planetary systems from formation to maturation. Protoplanetary disks, the name for circumstellar material at the earliest stages of a stellar lifetime, provide key information about the formation ...
Schneiderman, Tajana
core
ChemPhysChem, Volume 26, Issue 2, January 14, 2025.The structure of diphenylsilane could be determined from the rotational spectra of all its singly substituted heavy atom isotopologues. A comparison with its oxygen analogue diphenylether revealed some interesting differences in the internal dynamics as well as in the gas‐phase structure.
Gayatri Batra, Melanie Schnell
wiley +1 more source
The Circumstellar Disk HD 169142: Gas, Dust, and Planets Acting in Concert?* [PDF]
The Astrophysical Journal, 2017 Abstract HD 169142 is an excellent target for investigating signs of planet–disk interaction due to previous evidence of gap structures. We perform J-band (∼1.2 μm) polarized intensity imaging of HD 169142 with VLT/SPHERE. We observe polarized scattered light down to 0.″16 (∼19 au) and find an inner gap with a significantly reduced ...
Pohl, A. +36 more
openaire +8 more sources
Discussion – Circumstellar environment of active OB stars [PDF]
, 2010 This session dealt with the circumstellar gas surrounding active OB stars, and the discussion broadly focused on disks, wind morphology and structures, X-ray emission, and mass loss rates.
Richard H. D. Townsend, Douglas R. Gies
core +1 more source
Astronomische Nachrichten, Volume 345, Issue 8, October 2024.Abstract Astrophysical accretion discs that carry a significant mass compared with their central object are subject to the effect of self‐gravity. In the context of circumstellar discs, this can, for instance, cause fragmentation of the disc gas, and—under suitable conditions—lead to the direct formation of gas‐giant planets.
Oliver Gressel, Udo Ziegler
wiley +1 more source
The Gas/Dust Ratio of Circumstellar Disks: Testing Models of Planetesimal Formation [PDF]
, 2012 We present high-resolution, near-infrared NIRSPEC observations of CO absorption toward six class II T Tauri stars: AA Tau, DG Tau, IQ Tau, RY Tau, CW Tau, and Haro 6–5b.
Balsara, Dinshaw +5 more
core +5 more sources