Results 111 to 120 of about 3,169 (205)
The Astrophysical JournalPolarization-mode observations from the Atacama Large Millimeter/submillimeter Array (ALMA) are powerful tools for studying the dust grain populations in circumstellar disks.
Austen Fourkas +10 more
doaj +1 more source
The Carbon-Rich Gas in the Beta Pictoris Circumstellar Disk
, 2006 The edge-on disk surrounding the nearby young star Beta Pictoris is the archetype of the "debris disks", which are composed of dust and gas produced by collisions and evaporation of planetesimals, analogues of Solar System comets and asteroids. These disks provide a window on the formation and early evolution of terrestrial planets.
Roberge, Aki +4 more
openaire +2 more sources
Detection of CH in the O-rich Planetary Nebula NGC 6302
The Astrophysical JournalPlanetary nebulae are sites where ejected stellar material evolves into complex molecules, but the precise physical conditions and chemical routes that govern these processes are unclear.
Charmi Bhatt +35 more
doaj +1 more source
Kinematics of the circumstellar gas around UXOR stars
, 2004 This thesis presents the results of a high spectral resolution study of the circumstellar (CS) gas around the intermediate mass, pre-main sequence UXOR stars BF Ori, SV Cep, UX Ori, WW Vul and XY Per. The results are based on a set of 38 echelle spectra covering the spectral range 3800-5900 Angstroms, monitoring the stars on time scales of months, days
openaire +2 more sources
An Analysis of the Circumstellar Absorption of WD 1145+017
, 2018 The 21st European Workshop on White Dwarfs was held in Austin, TX from July 23rd to 27th of 2018WD 1145+017 is a white dwarf that has an actively disintegrating object in orbit and also uniquely displays circumstellar gas absorption.
Xu, S. +2 more
core +1 more source
Carbon but No CO? Circumstellar Gas Absorption in FUV Spectra of the Unusual 49 Ceti Debris Disk
, 2014 We present the first high-resolution HST-STIS FUV spectra of the nearby A1V star 49 Ceti. The system is famous for harboring a circumstellar disk that shows the dust properties of a debris disk, but the gas properties of a low-mass protoplanetary disk ...
Roberge, Aki +4 more
core +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
The Astrophysical Journal LettersIn the past decade, the Atacama Large Millimeter/submillimeter Array (ALMA) has revealed a plethora of substructures in the disks surrounding young stars.
Charles H. Gardner +45 more
doaj +1 more source
Limits on O VI Emission from the Shocked Circumstellar Gas of SN 1987A
, 2008 The Far Ultraviolet Spectroscopic Explorer (FUSE) was used to search for emission from the shock interaction of the ejecta of SN 1987A with its circumstellar material. FUSE observations of SN 1987A between 2000 and 2007 did not detect broad OVI emission.
Sonneborn, George +2 more
core
Laboratory studies of circumstellar and interstellar materials
, 2009 When the most primitive types of meteorite (chondrites) and interplanetary dust particles (IDPs) formed in the solar protoplanetary disk (solar nebula), all of them incorporated at least two types of presolar material: interstellar organic matter and ...
C.M.O.D. Alexander
core +1 more source