Results 51 to 60 of about 13,144 (210)

MgS grain component in circumstellar shells

The Astrophysical Journal, 1985
In this letter, far-infrared spectrophotometry (30-55 microns) and photometry (53-200 microns) are presented which define, for the first time, the long wavelength limit of the previously unidentified 30 micron emission feature found in certain extreme carbon star spectra. The spectral similarities are sufficiently similar to those of solid MgS that MgS
J. H. Goebel, S. H. Moseley
openaire   +1 more source

The Circumstellar Disk of the Butterfly Star in Taurus

, 2003
We present a model of the circumstellar environment of the so-called ``Butterfly Star'' in Taurus (IRAS 04302+2247). The appearance of this young stellar object is dominated by a large circumstellar disk seen edge-on and the light scattering lobes above ...
Bontemps S., Deborah L. Padgett, Dollfus A., Elvius A., Karl R. Stapelfeldt, Lucas P. W., Lucy L. B., Lynden-Bell D., Scarrott S., Sebastian Wolf, Shakura N. I., Ward-Thompson D., Weidenschilling S. J., Wolf S.   +13 more
core   +2 more sources

The New Class of Dusty DAZ White Dwarfs [PDF]

, 2007
Our mid-infrared survey of 124 white dwarfs with the Spitzer Space Telescope and the IRAC imager has revealed an infrared excess associated with the white dwarf WD 2115-560 naturally explained by circumstellar dust.
Fergal Mullally, Friedjung M., Koester D., Marc J. Kuchner, Mukremin Kilic, Ted von Hippel, Weidemann V., William T. Reach   +7 more
core   +3 more sources

Photoelectron Spectroscopy of the Phosphorus Monosulfide (PS) and Phosphorus Monoxide (PO) Radicals

Small Structures, Volume 7, Issue 1, January 2026.
Sketch of the experiment to measure the photo electron spectrum of the PS radical produced in situ with a mixture of PH3, H2S and F atoms. PO and PS radicals are the smallest units of phosphorus oxides and phosphorus sulfides, respectively, two rich families of refractory compounds widely employed in industrial and technological applications. These two
Pedro Recio, Jorge Alonso de la Fuente, Myriam Drissi, Niyazi Bulut, Jean Christophe Loison, Gustavo Garcia, Susana Gomez Carrasco, Cristina Sanz Sanz, Luis Bañares, Sonia Marggi Poullain, Alexandre Zanchet   +10 more
wiley   +1 more source

The Presolar Grain Database. I. Silicon Carbide

The Astrophysical Journal Supplement Series
The Presolar Grain Database (PGD) contains the vast majority of isotope data (published and unpublished) on presolar grains and was first released as a collection of spreadsheets in 2009.
Thomas Stephan, Reto Trappitsch, Peter Hoppe, Andrew M. Davis, Maitrayee Bose, Asmaa Boujibar, Frank Gyngard, K. Mairin Hynes, Nan Liu, Larry R. Nittler, Ryan C. Ogliore   +10 more
doaj   +1 more source

Dust Production around Carbon-Rich Stars: The Role of Metallicity

Universe, 2021
Background: Most of the stars in the Universe will end their evolution by losing their envelope during the thermally pulsing asymptotic giant branch (TP-AGB) phase, enriching the interstellar medium of galaxies with heavy elements, partially condensed ...
Ambra Nanni, Sergio Cristallo, Jacco Th. van Loon, Martin A. T. Groenewegen   +3 more
doaj   +1 more source

The T Tauri star RY Tau as a case study of the inner regions of circumstellar dust disks [PDF]

, 2007
We study the inner region of the circumstellar disk around the TTauri star RY Tau. Our aim is to find a physical description satisfying the available interferometric data, obtained with the mid-infrared interferometric instrument at the Very Large ...
A. A. Schegerer, Adams, Akeson, Allen, Basri, Beckwith, Bertout, Bertout, Blandford, Blum, Boss, Bouwman, Calvet, Calvet, Calvet, Calvet, Ch. Leinert, Chiang, Chiang, Cohen, D'Alessio, D'Alessio, D'Alessio, Dominik, Draine, Draine, Dullemond, Dullemond, Dullemond, Duschl, Eiroa, Eisner, Eisner, Elias, Fendt, Folha, Gail, Gail, Hanner, Hartigan, Hartmann, Harvey, Herbig, Herbst, Herbst, Indebetouw, Isella, Jaffe, Johansen, Johns-Krull, Joy, Jäger, Kenyon, Klahr, Kornet, Kuhi, Königl, Landstreet, Laughlin, Leinert, Leinert, Leinert, Leinert, Leinert, Leinert, Lissauer, Lodato, Lucas, Lynden-Bell, Mannings, Mannings, Mathis, McCabe, Meeus, Millan-Gabet, Miyake, Monnier, Mora, Muzerolle, Najita, Nakajima, Natta, Natta, Padgett, Pascucci, Pavlyuchenkov, Petrov, Pickering, Pontoppidan, Preibisch, Pringle, Rodmann, Rydgren, S. Wolf, Schegerer, Siess, Sonnhalter, Strom, Th. Ratzka, Uchida, Ulrich, van Boekel, Vink, Vinkovic, Wehrstedt, Weidenschilling, Weinberger, Weingartner, Whitney, Wielen, Wolf, Wolf, Wolf, Wolf, Wood, Wurm, Wünsch, Wünsch, Yorke, Zajtseva   +119 more
core   +1 more source

Satellites and Small Bodies With ALMA: Insights Into Solar System Formation and Evolution

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract Our understanding of the formation and evolution of planetary systems has made major advances in the past decade. This progress has been driven in large part by the Atacama Large Millimeter/submillimeter Array (ALMA), which has given us an unprecedented view of solar system bodies themselves, and of the structure and chemistry of forming ...
Katherine de Kleer, Michael E. Brown, Martin Cordiner, Richard Teague   +3 more
wiley   +1 more source

A Comprehensive Model of Morphologically Realistic Cosmic Dust Particles: An Application to Mimic the Unusual Polarization Properties of the Interstellar Comet 2I/Borisov

The Astrophysical Journal, 2023
The cosmic dust particles found in space are mainly porous aggregates of smaller grains. Theoretically, these aggregates are replicated using fractal geometry, assuming a cluster of spheres.
Prithish Halder, Sujan Sengupta
doaj   +1 more source

Circular polarization from scattering by circumstellar grains

The Astronomical Journal, 1980
It is suggested that observations of circular polarization can be a valuable tool for the study of circumstellar nebulae. A simple model is presented to predict the percentage of circular polarization produced by scattering from the dust contained within such nebulae; it was found that a significant component of circular polarization can be produced in
A. Shafter, M. Jura
openaire   +1 more source