The 21 μm and 30 μm emission features in carbon-rich objects

Autor: Kathleen E. Kraemer, Gregory C. Sloan, Kevin Volk

Publikováno v: Astrophysics and Space Science. 365

We review the observational properties and possible carriers of the 21 and 30 μm features seen in the spectra of evolved carbon-rich objects. The 30 μm feature is generally taken to be due to MgS, possibly in combination with other sulfides. It is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dcc1a7eb8268f8e02bd6103f39f0d51b
https://doi.org/10.1007/s10509-020-03798-2

Carbon-rich dust from the asymptotic giant branch to planetary nebulae

Autor: Gregory C. Sloan

Publikováno v: Planetary and Space Science. 149:32-37

As carbon stars evolve from the asymptotic giant branch to planetary nebulae, the spectrum from the dust around them changes from a mixture dominated by amorphous carbon to one dominated by polycyclic aromatic hydrocarbons (PAHs). Along the way, many

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f8025abd35400b3ec3068a51bf6ed9a
https://doi.org/10.1016/j.pss.2017.07.017

IDENTIFICATION OF HERBIG Ae/Be STARS IN THE SMALL MAGELLANIC CLOUD

Autor: Joana M. Oliveira, Gregory C. Sloan, Jordan T. Hyatt, Rafael Ferreira, Peter R. Wood, Martin Garay-MacLean, Jacco Th. van Loon, Albert A. Zijlstra, Daniel Santoro, Luke D. Keller, Joseph Quinn, Joshua D. Simon, Kathleen E. Kraemer, Kevin Geidel, Tori Knapp

Publikováno v: Keller, L D, Sloan, G C, Oliveira, J M, Kraemer, K E, van Loon, J TH, Wood, P R, Zijlstra, A, Simon, J D, Ferreira, R, Garay-MacLean, M, Hyatt, J T, Geidel, K, Quinn, J, Santoro, D & Knapp, T 2019, ' IDENTIFICATION OF HERBIG Ae/Be STARS IN THE SMALL MAGELLANIC CLOUD ', The Astrophysical Journal . https://doi.org/10.3847/1538-4357/ab204a

Protoplanetary disks orbiting intermediate-mass stars, Herbig Ae/Be stars, that have formed in a metal-poor environment may evolve differently than their Galactic cousins. A study of the planet-formation process in such an environment requires identi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4026410f77673f32cb5ac852c528443b
https://www.research.manchester.ac.uk/portal/en/publications/identification-of-herbig-aebe-stars-in-the-small-magellanic-cloud(14967dc7-9c17-4d07-9e25-7f05136434e1).html

Stellar Pulsation and the Production of Dust and Molecules in Galactic Carbon Stars

Autor: Gregory C. Sloan, Iain McDonald, Kathleen E. Kraemer, Martin Groenewegen, Albert A. Zijlstra, Luke D. Keller

Publikováno v: Kraemer, K E, Sloan, G C, Keller, L D, Mcdonald, I, Zijlstra, A & Groenewegen, M A T 2019, ' Stellar Pulsation and the Production of Dust and Molecules in Galactic Carbon Stars ', The Astrophysical Journal, vol. 887, no. 1 . https://doi.org/10.3847/1538-4357/ab4f6b

New infrared spectra of 33 Galactic carbon stars from FORCAST on SOFIA reveal strong connections between stellar pulsations and the dust and molecular chemistry in their circumstellar shells. A sharp boundary in overall dust content, which predominan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e0fb62e5c35f504dc964c6f7350cadd
https://www.research.manchester.ac.uk/portal/en/publications/stellar-pulsation-and-the-production-of-dust-and-molecules-in-galactic-carbon-stars(5dc42388-e83e-495a-8ca9-a320b401ebe9).html

Dust in planetary nebulae

Autor: Gregory C. Sloan

Publikováno v: Proceedings of the International Astronomical Union. 12:121-127

Infrared spectra from the Spitzer Space Telescope trace the evolution of carbon-rich dust from the asymptotic giant branch (AGB) to young planetary nebulae (PNe). On the AGB, amorphous carbon dominates the dust, but SiC and MgS also appear. In more e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a4569013a41268b8b8db8f5e20791b0
https://doi.org/10.1017/s1743921317002034