Results 11 to 20 of about 2,154,904 (218)

Circumstellar matter studied by spectrally-resolved interferometry [PDF]

open access: yes, 2012
12 pagesInternational audienceThis paper describes some generalities about spectro-interferometry and the role it has played in the last decade for the better understanding of circumstellar matter.
Millour, Florentin
core   +4 more sources

51st Symposium on Extended Atmospheres and Circumstellar Matter in Spectroscopic Binary Systems

open access: yes, 1973
The proposal to organize a Symposium on circumstellar matter and extended atmo spheres in binary systems was first made by the Dominion Astrophysical Observatory to the Executive Committee of the International Astronomical Union in the summer of 1969. It
Batten, Alan Henry(viaf)66719692edt   +1 more
core   +2 more sources

Detached Circumstellar Matter as an Explanation for Slowly-Rising Interacting Type Ibc Supernovae

open access: yesThe Open Journal of Astrophysics
Some hydrogen-poor (Type Ibc) supernovae (SNe) are known to have massive circumstellar matter (CSM) that are well detached from the star. Using the open-source code \texttt{CHIPS}, we construct a grid of models of SN Ibc interacting with detached CSM ...
Yuki Takei, Daichi Tsuna
doaj   +2 more sources

Modelling and observations of molecules in discs around young stars [PDF]

open access: yes, 2013
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core   +5 more sources

High-resolution Spectroscopy of SN 2023ixf’s First Week: Engulfing the Asymmetric Circumstellar Material

open access: yesThe Astrophysical Journal, 2023
We present a series of high-resolution echelle spectra of SN 2023ixf in M101, obtained nightly during the first week or so after discovery using PEPSI on the Large Binocular Telescope.
Nathan Smith   +6 more
doaj   +1 more source

Problems of modelization of circumstellar matter out of equilibrium [PDF]

open access: yesSymposium - International Astronomical Union, 1994
Circumstellar envelopes of young and evolved stars are responsible for many important phenomena concerning the exchange of matter, angular momentum, energy and maybe magnetic field between the core structure of stars and the interstellar medium. In particular, it is through them that matter enriched in heavy elements flows from evolved stars towards ...
J-P. J. Lafon, E. Huguet
openaire   +1 more source

Circumstellar H2O in M-type AGB stars [PDF]

open access: yes, 2008
Surprisingly high amounts of H2O have recently been reported in the circumstellar envelope around the M-type AGB star W Hya. However, substantial uncertainties remain, as the required radiative transfer modelling is difficult due to high optical depths ...
Olofsson, Hans,   +6 more
core   +2 more sources

Takeout and Delivery: Erasing the Dusty Signature of Late-stage Terrestrial Planet Formation

open access: yesThe Astrophysical Journal, 2023
The formation of planets like Earth is expected to conclude with a series of late-stage giant impacts that generate warm dusty debris, the most anticipated visible signpost of terrestrial planet formation in progress.
Joan R. Najita, Scott J. Kenyon
doaj   +1 more source

Circumstellar matter in Algols and Serpentids [PDF]

open access: yesSpace Science Reviews, 1989
A systematic search is reported for phenomena associated with circumstellar matter in interacting binary systems of the Algol and W Serpentis type. Ultraviolet emission lines have been detected by the author in 10 Algols and 6 Serpentids. No conspicuous difference exists between systems with disk accretion and those with direct stream impact.
openaire   +2 more sources

SN 2020uem: a Possible Thermonuclear Explosion within a Dense Circumstellar Medium. I. The Nature of Type IIn/Ia-CSM SNe from Photometry and Spectroscopy

open access: yesThe Astrophysical Journal, 2023
We have performed intensive follow-up observations of a Type IIn/Ia-CSM supernova (SN IIn/Ia-CSM), 2020uem, with photometry, spectroscopy, and polarimetry. In this paper, we report on the results of our observations focusing on optical/near-infrared (NIR)
Kohki Uno   +20 more
doaj   +1 more source

Home - About - Disclaimer - Privacy