Results 51 to 60 of about 386,435 (271)

Circumstellar dust around FU Orionis stars [PDF]

Symposium - International Astronomical Union, 1987
It is immediately apparent from IRAS and other far infrared data (figure 1) that all known FU Orionis stars, or fuors, are associated with substantial amounts of cool circumstellar dust.The pre-outburst magnitudes for V1057 Cyg indicate that this star was immersed in circumstellar dust already before its flare-up in 1969–1970, and hence that this dust ...
openaire   +1 more source

Coagulation–Fragmentation Equilibrium for Charged Dust: Abundance of Submicron Grains Increases Dramatically in Protoplanetary Disks

The Astrophysical Journal, 2023
Dust coagulation in protoplanetary disks is not straightforward and is subject to several slowdown mechanisms, such as bouncing, fragmentation, and radial drift to the star.
Vitaly Akimkin, Alexei V. Ivlev, Paola Caselli, Munan Gong, Kedron Silsbee   +4 more
doaj   +1 more source

Newly formed dust within the circumstellar environment of SN Ia-CSM 2018evt. [PDF]

Nat Astron
Wang王 L灵, Hu M, Wang L, Yang 杨 Y轶, Yang J, Gomez H, Chen S, Hu L, Chen TW, Mo J, Wang X, Baade D, Hoeflich P, Wheeler JC, Pignata G, Burke J, Hiramatsu D, Howell DA, McCully C, Pellegrino C, Galbany L, Hsiao EY, Sand DJ, Zhang J, Uddin SA, Anderson JP, Ashall C, Cheng C, Gromadzki M, Inserra C, Lin H, Morrell N, Morales-Garoffolo A, Müller-Bravo TE, Nicholl M, Gonzalez EP, Phillips MM, Pineda-García J, Sai H, Smith M, Shahbandeh M, Srivastav S, Stritzinger MD, Yang S, Young DR, Yu L, Zhang X.   +46 more
europepmc   +2 more sources

PERTURBATIONS OF SNe Ia LIGHT CURVES, COLORS, AND SPECTRAL FEATURES BY CIRCUMSTELLAR DUST [PDF]

, 2011
It has been suggested that multiple scattering on circumstellar dust could explain the non-standard reddening observed in the line of sight to Type Ia supernovae.
R. Amanullah, A. Goobar
semanticscholar   +1 more source

Dust-to-gas ratio resurgence in circumstellar disks due to the formation of giant planets: the case of HD 163296 [PDF]

, 2019
The amount of dust present in circumstellar disks is expected to steadily decrease with age due to the growth from micron-sized particles to planetesimals and planets. Mature circumstellar disks, however, can be observed to contain significant amounts of
Marzari, F., Polychroni, D., Testi, L., Turrini, D.   +3 more
core   +2 more sources

A Search for Infrared Emission from Core-Collapse Supernovae at the Transitional Phase

, 2012
Most of the observational studies of supernova (SN) explosions are limited to early phases (< a few yr after the explosion) of extragalactic SNe and observations of SN remnants (> 100 yr) in our Galaxy or very nearby galaxies.
Andrews, Artyukhina, Baars, Bode, Bouchet, Bouchet, Cherchneff, Chu, Chugai, Dale, Dopita, Draine, Dwek, Dwek, Dwek, Dwek, Edoh, Fox, Fox, Fox, Freedman, Gordon, Graham, Hidehiro Kaneda, Hideo Matsuhara, Hines, Immler, Immler, Itsuki Sakon, Kaneda, Keiichi Maeda, Ko Arimatsu, Kotak, Kozasa, Lenz, Liszt, Lorente, Masaomi Tanaka, Meikle, Meikle, Meikle, Mezger, Montes, Murakami, Méndez, Nozawa, Nozawa, Nozawa, Nozawa, Onaka, Petre, Rho, Rho, Rieke, Ryo Ohsawa, Sakon, Schlegel, Schlegel, Schlegel, Schlegel, Schoniger, Seok, Sibthorpe, Skrutskie, Smith, Smith, Smith, Soria, Sugerman, Swinyard, Takashi Onaka, Takaya Nozawa, Takehiko Wada, van Dyk, Werner, Williams   +75 more
core   +1 more source

Imaging the circumstellar dust around AGB stars with PolCor [PDF]

, 2011
Aims. The aim of this paper is to investigate how the new imaging Polarimeter and Coronograph (PolCor) at the Nordic Optical Telescope** (NOT) can be used in the study of circumstellar structures around AGB stars. The purpose is to prepare for a study of
S. Ramstedt, M. Maercker, G. Olofsson, H. Olofsson, F. Schoier   +4 more
semanticscholar   +1 more source

Synthetic photometry for carbon-rich giants II. The effects of pulsation and circumstellar dust [PDF]

, 2011
Context. Red giant stars approaching the end of the evolutionary phase of the asymptotic giant branch (AGB) are, inter alia, characterised by (i) pulsations of the stellar interiors; and (ii) the development of dusty stellar winds.
W. Nowotny, B. Aringer, S. Hofner, M. Lederer   +3 more
semanticscholar   +1 more source

Dust amorphization in protoplanetary disks

, 2009
High-energy irradiation of the circumstellar material might impact the structure and the composition of a protoplanetary disk and hence the process of planet formation.
A. A. Schegerer, A. M. Glauser, Bouwman, Bouwman, Bringa, C. Baldovin-Saavedra, Caffe, Carrez, D'Alessio, D. M. Watson, Demyk, Djouadi, Dorschner, Ercolano, Feigelson, Furlan, Gail, Geers, Glassgold, Glassgold, Güdel, Güdel, Hartigan, Henning, Herczeg, Igea, Ilgner, Isobe, Jäger, Jäger, Jäger, Kenyon, Kessler-Silacci, King, Lahuis, M. Audard, M. Güdel, Meeus, Min, Pascucci, Rodmann, S. Wolf, Sargent, Schegerer, Semenov, Servoin, Sicilia-Aguilar, Siess, Spitzer, T. Henning, Telleschi, van Boekel, Watson, White, Wood   +54 more
core   +1 more source

A Submillimeter View of Circumstellar Dust Disks in ρ Ophiuchi [PDF]

, 2007
We present new multiwavelength submillimeter continuum measurements of the circumstellar dust around 48 young stars in the ρ Ophiuchi dark clouds.
S. Andrews, Jonathan P. Williams
semanticscholar   +1 more source