Results 41 to 50 of about 362,838 (268)
RR Tel: Determination of Dust Properties During Minimum Obscuration
Open Astronomy, 2012 the ISO infrared spectra and the SAAO long-term JHKL photometry of RR Tel in the epochs during minimum obscuration are studied in order to construct a circumstellar dust model.
Jurkić T., Kotnik-Karuza D.
doaj +1 more source
Dust Echoes from Luminous Fast Blue Optical Transients
The Astrophysical Journal, 2023 Luminous fast blue optical transients (LFBOTs) such as AT2018cow form a rare class of engine-powered explosions of uncertain origin. A hallmark feature of these events is radio/millimeter synchrotron emission powered by the interaction of fast ≳0.1 c ...
Brian D. Metzger, Daniel A. Perley
doaj +1 more source
THE S4G PERSPECTIVE ON CIRCUMSTELLAR DUST EXTINCTION OF ASYMPTOTIC GIANT BRANCH STARS IN M100 [PDF]
, 2012 We examine the effect of circumstellar dust extinction on the near-IR (NIR) contribution of asymptotic giant branch (AGB) stars in intermediate-age clusters throughout the disk of M100.
S. Meidt +21 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 ASASSN-21qj is a distant Sun-like star that recently began an episode of deep dimming events after no prior recorded variability. Here we examine archival and newly obtained optical and near-infrared data of this star.
Jonathan P. Marshall +8 more
doaj +1 more source
The nearby population of M-dwarfs with WISE: a search for warm circumstellar dust [PDF]
, 2012 Context. Circumstellar debris disks are important because of their connection and interaction with planetary systems. An efficient way to identify these systems is through their infrared excess.
H. Avenhaus, H. Schmid, M. Meyer
semanticscholar +1 more source
Herschel limits on far-infrared emission from circumstellar dust around three nearby type Ia supernovae. [PDF]
, 2012 The use of Type Ia supernovae (SNe Ia) as distance indicators is essential for studying the expansion history of the Universe and for exploring the nature of dark energy.
J. Johansson, 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. +3 more
core +2 more sources
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 +4 more
doaj +1 more source
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
Investigating planet formation in circumstellar disks: CARMA observations of RY Tau and DG Tau [PDF]
, 2010 (Abridged) We present CARMA observations of the thermal dust emission from the circumstellar disks around the young stars RYTau and DGTau at wavelengths of 1.3mm and 2.8mm.
Akeson +28 more
core +2 more sources