Bibliographic Citation
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Title | Observations of the circumstellar gas shells around Betelgeuse and Antares |
Creator/Author | Bernat, A.P. ; Lambert, D.L. |
Publication Date | 1975 Nov 01 |
OSTI Identifier | OSTI ID: 4113741 |
Other Number(s) | CODEN: AJLEA |
Resource Type | Journal Article |
Resource Relation | Astrophys. J., Lett., v. 201, no. 3, pp. L153-L156 |
Research Org | Univ. of Texas, Austin |
Subject | N56200 --Physics (Astrophysics & Cosmology)--Stars; 640102 --Physics Research--Astrophysics & Cosmology--Stars; GIANT STARS-- STELLAR ATMOSPHERES;EMISSION;INFRARED RADIATION;LINE WIDTHS;PHOTOMETRY;PHOTOSPHERE |
Description/Abstract | K i resonance line (lambda7699) emission has been detected from the circumstellar gas shell surrounding Betelgeuse ($alpha$ Ori).A shell diameter of 4''--8'' (80--160 stellar radii) is indicated.New observations of the Ca ii infrared triplet line cores are used to obtain a lower limit to the Ca$sup +$ (and, hence, K i) shell radius.The 8542 A line in $alpha$ Ori does not show a circumstellar absorption core, and the shell radius limit, R/sub shell/greater than or equal to31 R/sub star/, is estimated.A 108 mA circumstellar core is seen in the 8542 A line in Antares ($alpha$ Sco), and a shell radius R/sub shell/approx.=4.0 R/sub star/ is suggested.(AIP) |
Country of Publication | United States |
Language | English |
System Entry Date | 2001 Jun 03 |
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