Results 71 to 80 of about 2,045,808 (218)
Limitations of the modified blackbody fit method for determining molecular cloud properties
Astronomische Nachrichten, Volume 345, Issue 4, May 2024.Abstract Achieving a comprehensive understanding of the star and planet formation process is one of the fundamental tasks of astrophysics, requiring detailed knowledge of the physical conditions during the different phases of this process. During the earliest stages, that is, concerning physical processes in molecular clouds and filaments, the column ...
Niko Zielinski, Sebastian Wolf
wiley +1 more source
Signs of a faint disc population at polluted white dwarfs [PDF]
, 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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The Astrophysical Journal LettersThe post-main-sequence evolution of massive stars involves phases of intense, often eruptive mass loss, including the B[e] supergiant phase. These hot stars are surrounded by cool, dense circumstellar disks that host complex chemistry, producing both ...
María Laura Arias +3 more
doaj +1 more source
The circumstellar matter in the Be + K binary KX and seen in the uv spectra [PDF]
Symposium - International Astronomical Union, 1987 KX And (HD 218393) belongs to well-known and often observed Be stars. The periodicity of spectroscopic characteristics as well as other observations led to the conclusion that the star is a peculiar interacting binary (Harmanec et al. 1980). The aim of this paper is to present the phase-dependent behaviour of the UV spectrum of the star.
openaire +1 more source
, 2010 We investigated photoredox transformations of oxygen, carbon, peroxides, and iron that accompany “photodissolution” of suspended marine particulate organic carbon (POC), a sunlight-induced process that transfers POC to the dissolved organic carbon (DOC ...
Margaret L. Estapa +3 more
core +1 more source
GalaxiesWe report new medium-resolution spectroscopy covering the wavelength range from 0.6 to 2.4 μm, as well as multi-epoch, multi-wavelength photometry, of the Class I high-mass embedded young stellar object Mol 12 (IRAS 05373+2349). It is embedded (AV≃12) in
Mauricio Tapia +3 more
doaj +1 more source
Journal of Social Philosophy, Volume 55, Issue 4, Page 624-642, Winter 2024.
Luke Moffett
wiley +1 more source
Circumstellar grain formation [PDF]
, 1986 Dust formation around cool giant and supergiant stars is examined in terms of grain formulation. Optical properties of small clusters, molecular physics of cluster nucleation and growth, circumstellar mass flows, and their application to alpha Ori are ...
Draine, B. T.
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The Astrophysical Journal LettersWe report C, N, Si, and Al–Mg isotope data for 39 presolar X silicon carbide (SiC) and four silicon nitride grains—a group of presolar grains that condensed in the remnants of core-collapse Type II supernovae (CCSNe)—isolated from the Murchison meteorite.
Nan Liu +5 more
doaj +1 more source
Monodisperse elastic shells: a 3D study of jammed granular matter and microencapsulation [PDF]
, 2014 This thesis focusses on two, admittedly rather different, applications of spherical elastic shells. First in the field of microencapsulation as a smart container to encapsulate and release functional materials.
Sub Soft Condensed Matter +2 more
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