Results 111 to 120 of about 4,364 (222)

Formation and destruction of dust grains in circumstellar regions [PDF]

Symposium - International Astronomical Union, 1987
The existence of circumstellar dust in late-type stars is connected with stellar pulsations since periodic shocks accompanying pulsations seem to be the most probable mechanism of the gas density increase needed for condensation of dust particles in outer layers of the stellar atmosphere.
openaire   +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, Dufour, P, Farihi, J, Bergfors, C   +3 more
core  

In Quest of the Circumstellar Dust Shell Structure in Proto-Planetary Nebulae [PDF]

, 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 [PDF]

, 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.
core   +1 more source

Unveiling the progenitor of SN 2023ixf: Circumstellar dust and its implications for the red supergiant problem

Astronomy & Astrophysics
The nearby Type II supernova SN 2023ixf offers a critical test of the long-standing ‘red supergiant problem’ – the apparent absence of high-mass red-supergiant progenitors in pre-explosion imaging.
Ragosta Fabio, Simongini Andrea, Ambrosino Filippo, Imbrogno Matteo, Illiano Giulia, Piranomonte Silvia, Melandri Andrea, Di Palma Irene, Papitto Alessandro, Ghedina Adriano, Cecconi Massimo, Leone Francesco, González Manuel, Pérez Ventura Héctor, Hernandez Diaz Marcos, San Juan José   +15 more
doaj   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Strong dust processing in circumstellar discs around 6 RV Tauri stars - Are dusty RV Tauri stars all binaries? [PDF]

, 2005
We present extended Spectral Energy Distributions (SEDs) of seven classical RV Tauri stars, using newly obtained submillimetre continuum measurements and Geneva optical photometry supplemented with literature data.
De Ruyter, Stephanie, Dejonghe, Herwig, WATERS, LBFM, S. De Ruyter, DOMINIK, C, VAN WINCKEL, H, H. Van Winckel, C. Dominik, L. B. F. M Waters, H. Dejonghe   +9 more
core   +1 more source

Early Planet Formation in Embedded Disks (eDisk). XVII. A Compact but Structured Keplerian Disk and Large-scale Streamers Revealed in the Class I Protostellar System IRAS 04169+2702

The Astrophysical Journal
We present high-resolution (∼0 $\mathop{.}\limits^{^{\prime\prime} }$ 05; 8 au) dust continuum and molecular line observations toward the Class I protostellar system IRAS 04169+2702 in the Taurus B213 region, as part of the Atacama Large Millimeter ...
Ilseung Han, Woojin Kwon, Yusuke Aso, Nagayoshi Ohashi, John J. Tobin, Jes K. Jørgensen, Shigehisa Takakuwa, Leslie W. Looney, Yuri Aikawa, Christian Flores, Itziar de Gregorio-Monsalvo, Patrick M. Koch, Chang Won Lee, Jeong-Eun Lee, Zhi-Yun Li, Zhe-Yu Daniel Lin, Jinshi Sai, Travis J. Thieme, Jonathan P. Williams, Sacha Gavino, Miyu Kido, Shih-Ping Lai, Nguyen Thi Phuong, Alejandro Santamaría-Miranda, Hsi-Wei Yen   +24 more
doaj   +1 more source

Atacama Large Aperture Submillimeter Telescope (AtLAST) science: Our Galaxy [version 1; peer review: 2 approved]

Open Research Europe
As we learn more about the multi-scale interstellar medium (ISM) of our Galaxy, we develop a greater understanding for the complex relationships between the large-scale diffuse gas and dust in Giant Molecular Clouds (GMCs), how it moves, how it is ...
Pamela Klaassen, Maria Beltrán, Alessio Traficante, Mark Booth, Kate Pattle, Jonathan Marshall, Joshua Lovell, Brandt Gaches, Alvaro Hacar, Nicolas Peretto, Caroline Bot, Doris Arzoumanian, Thomas Stanke, Gaspard Duchêne, Ana Duarte Cabral, Antonio Hales, David Eden, Patricia Luppe, Jens Kauffmann, Elena Redaelli, Sebastian Marino, Álvaro Sánchez-Monge, Andrew Rigby, Dmitry Semenov, Eugenio Schisano, Mark Thompson, Silvia Spezzano, Claudia Cicone, Friedrich Wyrowski, Martin Cordiner, Tony Mroczkowski, Doug Johnstone, Luca Di Mascolo, Minju Lee, Eelco van Kampen, Thomas Maccarone, Daizhong Liu, Matthew Smith, Amélie Saintonge, Sven Wedemeyer, Alexander Thelen   +40 more
doaj   +1 more source

Hα Emission among Evolved FGKM Stars: A Compendium from the Literature

The Astronomical Journal
Emission in the wings of the H α line among late-type giant stars occurs as a consequence of conditions in their chromospheres. Data from the literature have been used to document the incidence of H α emission among Population I giant stars as a function
Graeme H. Smith
doaj   +1 more source