Results 111 to 120 of about 4,353 (222)
Dusty Blue Supergiants: News from High-Angular Resolution Observations
Advances in Astronomy, 2014 An overview is presented of the recent advances in understanding the B[e] phenomenon among blue supergiant stars in light of high-angular resolution observations and with an emphasis on the results obtained by means of long baseline optical stellar ...
W. J. de Wit +2 more
doaj +1 more source
86th Annual Meeting of the Meteoritical Society (2024)
Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley +1 more source
Dust Stratification in Young Circumstellar Disks
, 2006 We present high-resolution infrared spectra of four YSOs (T Tau N, T Tau S, RNO 91, and HL Tau). The spectra exhibit narrow absorption lines of 12CO, 13CO, and C18O, as well as broad emission lines of gas-phase 12CO. The narrow absorption lines of CO are
Kulesa, Craig +6 more
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Hydrodynamical models and synthetic spectra of circumstellar dust shells around AGB stars
, 1997 We present a sample of hydrodynamical steady state models of circumstellar gas/dust shells around late type giants together with computed spectral energy distributions (SEDs).
M. Steffen +3 more
core +1 more source
Study of variable extinction of hot stars with circumstellar dust shells
, 1984 Various projects on the topic of hot stars with circumstellar dust are reported. The surface temperature, wind speed, and interstellar reddening were determined for the variable WC7 star HD 193793.
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THE SPECTRAL ENERGY DISTRIBUTION OF HH 30 IRS: CONSTRAINING THE CIRCUMSTELLAR DUST SIZE DISTRIBUTION
, 2001 We present spectral energy distribution (SED) models for the edge-on classical T Tauri star HH 30 IRS that indicate that dust grains have grown to larger than 50 km within its circumstellar disk.
J. E. Bjorkman +7 more
core +1 more source
Circumstellar dust shells around long-period variables
, 2009 Context. Miras and long-period variables (LPVs) are radially pulsating, highly evolved stars on the Asymptotic Giant Branch. Because of peculiar conditions of this objects, their cool, extended atmospheres are ideal sites for the formation of dust ...
C. Dreyer, E. Sedlmayr, M. Hegmann
core +1 more source
Signs of a faint disc population at polluted white dwarfs
, 2014 Observations of atmospheric metals and dust discs around white dwarfs provide important clues to the fate of terrestrial planetary systems around intermediate-mass stars.
Rocchetto, M +3 more
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In Quest of the Circumstellar Dust Shell Structure in Proto-Planetary Nebulae
, 2015 Dusty mass loss during the asymptotic giant branch (AGB) phase of low to intermediate initial mass stars results in a physically-detached circumstellar dust shell, also known as a proto-planetary nebula (PPN), in the subsequent post-AGB phase.
T. Ueta
core +1 more source
The structure of circumstellar shells
, 1993 This document provides a report on research activities carried out with the support of NASA grant NAG 5-1174, the Structure of Circumstellar Shells, funded under the Astrophysics Data Program.
Fix, John D.
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