Results 41 to 50 of about 386,435 (271)
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
Early gray dust formation in the type IIn SN 2005ip [PDF]
, 2018 The physical characteristics of dust formed in supernovae is poorly known. In this paper, we investigate the extinction properties of dust formed in the type IIn SN 2005ip.
Gall, Christa +2 more
core +3 more sources
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
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
Chemistry in circumstellar disks: CS toward HL Tauri [PDF]
, 1992 High-resolution millimeter-wave aperture synthesis images of the CS J = 2 → 1 and dust continuum emission toward the young star HL Tauri have been combined with single-dish spectra of the higher J CS transitions in order to probe the chemical and ...
Blake, Geoffrey A. +2 more
core +1 more source
Thirty years of SN 1980K: Evidence for light echoes [PDF]
, 2012 We report optical and mid-infrared photometry of SN 1980K between 2004 and 2010, which show slow monotonic fading consistent with previous spectroscopic and photometric observations made 8 to 17 years after outburst.
Andrews, Jennifer E. +9 more
core +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
Circumstellar dust emission models
The Astrophysical Journal, 1994 We present the wavelength-dependent absorption coefficient K(sub lambda) the scattering coefficient o(sub lambda), the albedo w(sub lambda), and the average cosine of the scattering phase function g(sub lambda) between 0.0912 micrometers and 1000 micrometers for four interstellar medium grain models.
Mark G. Wolfire, Ed Churchwell
openaire +1 more source