On the Origin of the 21 Micron Feature in Post-AGB Stars
1999 ◽
Vol 191
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pp. 297-302
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The unidentified emission feature at 21 μm is now observed in 12 sources, all being objects in transition between the asymptotic giant branch and planetary nebulae phases. The relations between the 21 μm and other emission features, such as the PAH features and the broad 30 μm feature, and the possible origins of the 21 μm feature are discussed.
2003 ◽
Vol 209
◽
pp. 303-304
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Keyword(s):
2011 ◽
Vol 7
(S283)
◽
pp. 127-130
Keyword(s):
2009 ◽
Vol 26
(3)
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pp. 339-344
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Keyword(s):
2016 ◽
Vol 12
(S323)
◽
pp. 179-183
Keyword(s):
2003 ◽
Vol 209
◽
pp. 315-315
Keyword(s):
2011 ◽
Vol 7
(S280)
◽
pp. 203-215
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Keyword(s):
2016 ◽
Vol 12
(S323)
◽
pp. 121-127
2008 ◽
Vol 4
(S251)
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pp. 213-214
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