Results 61 to 70 of about 584 (186)
Fifteen years of “Sonderforschungsbereich” in Heidelberg: Research on circumstellar matter [PDF]
Symposium - International Astronomical Union, 1987 At the end of this year, the Sonderforschungsbereich (Special Collaborative Programme) no. 132 on “Theoretical and Observational Stellar Astronomy” in Heidelberg will terminate after fifteen years. Although 15 years are only 2 1/2 per cent of the age of the University of Heidelberg, which is celebrating its 600 th anniversary this year, they are ...
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Journal of Social Philosophy, Volume 55, Issue 4, Page 624-642, Winter 2024.
Luke Moffett
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The Astrophysical JournalInteraction between supernova (SN) ejecta and dense circumstellar medium (CSM) with a flat density structure ( ρ ∝ r ^− ^s , s < 1.5) was recently proposed as a possible mechanism behind interacting SNe that exhibit exceptionally long rise times ...
Ryotaro Chiba, Takashi J. Moriya
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Circumstellar matter studied by spectrally-resolved interferometry
, 2012 This paper describes some generalities about spectro-interferometry and the role it has played in the last decade for the better understanding of circumstellar matter. I provide a small history of the technique and its origins, and recall the basics of differential phase and its central role for the recent discoveries.
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Recent and Future Studies of Circumstellar Matter – A Snapshot [PDF]
Symposium - International Astronomical Union, 1999 At this meeting, powerful new images and spectroscopy of AGB stars were presented. Theoretical models have advanced, and we are learning more from studies of the pre-solar grains isolated from meteorites.We suggest that several mass loss mechanisms may be operating in AGB stars: current images imply both spherical winds and highly flattened outflows ...
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Supernovae, by Chandra and XMM-Newton
UniverseX-ray emission from supernovae can arise from multiple interactions during their evolution. The immediate explosion is sufficiently energetic to generate X-rays; so, too, is the impact of the shock as it runs into circumstellar matter from earlier mass ...
Eric M. Schlegel
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The Astrophysical Journal LettersCircumstellar interaction of supernova (SN) ejecta is an essential process in its evolution, and observations of SNe have found the signature of circumstellar interaction in both the early and late evolutionary phases of SNe. In this Letter, we show that
Tomoki Matsuoka +2 more
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The Astronomical JournalScattered light imaging of protoplanetary disks provides key insights on the geometry and dust properties in the disk surface. Here, we present James Webb Space Telescope (JWST) 2–21 μ m images of a 1000 au radius edge-on protoplanetary disk surrounding ...
Gaspard Duchêne +8 more
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The Energy Sources, the Physical Properties, and the Mass-loss History of SN 2017dio
The Astrophysical JournalWe study the energy sources, the physical properties of the ejecta and the circumstellar medium (CSM), and the mass-loss history of the progenitor of SN 2017dio, which is a broad-lined Ic (Ic-BL) supernova (SN) having unusual light curves (LCs) and ...
Deng-Wang Shi +3 more
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Searching for New Objects with the B[e] Phenomenon
GalaxiesObjects with the B[e] phenomenon, whose defining features are the presence of forbidden emission lines and infrared excess coming from circumstellar dust, represent a broad range of evolutionary stages from pre-main-sequence to planetary nebulae.
Aisha Zh. Naurzbayeva +14 more
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