Image Details
Caption: Fig. 1.
The solid curves are GHRS Lyα profiles toward (a) α Cen A and (b) α Cen B, from LW. The upper dashed curve is the assumed intrinsic stellar Lyα emission profile. The dotted curve shows the intrinsic stellar emission line after absorption by a purely LISM cloud with NH = 4.5 × 1017 cm−2, b = 9.3 km s−1, and v = −18.2 km s−1, with D/H = 1.6 × 10−5.
© 1997. The American Astronomical Society. All rights reserved. Printed in U.S.A.