PROBING OUR HELIOSPHERIC HISTORY. I. HIGH-RESOLUTION OBSERVATIONS OF Na I AND Ca II ALONG THE SOLAR HISTORICAL TRAJECTORY
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چکیده
منابع مشابه
Observations of Na I and Ca II Along the Solar Historical
Over the course of its motion through the Galaxy, our solar system has encountered many interstellar environments of varying characteristics. Interstellar medium (ISM) density variations spanning seven orders of magnitude are commonly seen throughout the general Galactic environment, and a sufficiently dense cloud within this range has the potential to dramatically alter the structure of the he...
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High-resolution absorption measurements ( =D & 100;000) of the resonance lines of Fe ii, Mg ii, and Ca ii are presented for all available observed targets within 100 pc. The Fe ii andMg ii spectra were obtained with the Goddard High Resolution Spectrograph (GHRS) and the Space Telescope Imaging Spectrograph (STIS) instruments aboard the Hubble Space Telescope (HST). Of the 63 observations of ta...
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Formation of circumstellar resonant lines of Na I and Ca II in type Ia supernovae is studied for the case, when supernova explodes in a binary system with a red giant. The model suggests a spherically-symmetric wind and takes into account ionization and heating of the wind by X-rays from the shock wave and by gamma-quanta of Ni radioactive decay. For the wind density typical of the red giant th...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2013
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/773/2/96