Results 91 to 100 of about 3,169 (205)
Characterizing circumstellar disk around young stars
, 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
Probing the Era of Giant Collisions: Millimeter Observations of the HD 166191 System
The Astrophysical JournalWe present nonsimultaneous Atacama Large Millimeter/submillimeter Array (ALMA) Band 7 and Submillimeter Array (SMA) observations of the HD 166191 disk, which was recently thought to have a collision in its terrestrial planet zone.
Kadin Worthen +7 more
doaj +1 more source
Intermediate-Mass Mergers: A New Scenario for Several FS CMa Stars
GalaxiesWe summarise the properties and nature of a peculiar group of B-type stars called FS CMa stars. These stars show the B[e] phenomenon, i.e., their spectra exhibit both forbidden emission lines and infrared excess.
Daniela Korčáková +8 more
doaj +1 more source
, 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
Discussion – Circumstellar environment of active OB stars
, 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
The Observation of Circumstellar Disks: Dust and Gas Components
, 2004 14 pages, COMETS II, M.C. Festou, H.U. Keller, H.A. Weaver eds, to appear in 2004, Space Science Series of the University of Arizona (R. Binzel Ed.), Tucson, AZ. A high resolution version of the paper is available at: http://www.strw.leidenuniv.nl/~augereau/publications ...
Dutrey, Anne +2 more
openaire +2 more sources
Beta Pic-like circumstellar disk gas surrounding HR 10 and HD 85905 [PDF]
, 1998 We present high spectral resolution observations of the absorption lines of CaII and NaI associated with the circumstellar gas disk surrounding the two A-type shell stars HR 10 and HD 85905.
Price, R.J. +3 more
core
The Gas/Dust Ratio of Circumstellar Disks: Testing Models of Planetesimal Formation
, 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 +3 more sources
The Astronomical JournalThe carrier of the 21 μ m emission feature discovered in a handful of protoplanetary nebulae (PPNe) is one of the most intriguing enigmas in circumstellar chemistry.
Jian-Jie Qiu +9 more
doaj +1 more source
The dusty envelopes of asymptotic giant branch stars with ultraviolet excesses
Astronomy & AstrophysicsContext. Roughly spherical envelopes around asymptotic giant branch (AGB) stars transform into the highly asymmetric morphologies observed in planetary nebulae.
Alonso-Hernández J. +3 more
doaj +1 more source