... Therefore they cannot change their brightness but have instead strong disk-like dust envelopes. ... In the B[e]-supergiants strong infrared excesses are observed because of the presence of disk-like dust envelopes. ...
... the star is not obscured by its dustdisk, we estimate that this fraction should not ... This means that the dustdisk should be optically thick and cover more than one half ...
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Ссылки http://www.sao.ru/hq/balega/PUBL_BAL/PUB_2001/2001A&A_379_229Y.pdf -- 168.2 Кб -- 24.02.2010 Похожие документы
... the star is not obscured by its dustdisk, we estimate that this frac tion should ... This means that the dustdisk should be optically thick and cover more than one half ...
... disk is very thin, we assume that its inclination angle is 90 .For all other ... for the stellar disk in R. This can be explained by stronger dust extinction in the ...
... Galaxies with polar rings (PRGs) are a unique class of extragalactic objects, consisting of a ring or disk of gas, stars and dust orbiting in a plane nearly perpendicular to the disk of a central galaxy. ...
... a geometrically thick circumstellar disk or envelope at the dust sublimation radius ... the bright inner wall of the dusty envelope or disk at the dust sublimation radius ...
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Ссылки http://www.sao.ru/hq/balega/PUBL_BAL/PUB_2003/2003A&A_412_735P.pdf -- 972.9 Кб -- 24.02.2010 Похожие документы
... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ...