dc.contributor.author |
Lambert, D. L |
|
dc.contributor.author |
Kameswara Rao, N |
|
dc.contributor.author |
Pandey, G |
|
dc.contributor.author |
Ivans, I. I |
|
dc.date.accessioned |
2008-07-29T05:09:21Z |
|
dc.date.available |
2008-07-29T05:09:21Z |
|
dc.date.issued |
2001-07 |
|
dc.identifier.citation |
Astrophysical Journal, Vol. 555, No. 2, Part 1, pp. 925 - 931 |
en |
dc.identifier.issn |
0004-637X |
|
dc.identifier.uri |
http://hdl.handle.net/2248/2936 |
|
dc.description.abstract |
Infrared Space Observatory 3-25 μm spectra of the R Coronae Borealis stars V854 Cen, R CrB, and RY Sgr are presented and discussed. Sharp emission features coincident in wavelength with the well-known unidentified emission features are present in the spectrum of V854 Cen but not in the spectra of R CrB and RY Sgr. Since V854 Cen is not particularly hydrogen-poor and has 1000 times more hydrogen than the other stars, the emission features are probably from a carrier containing hydrogen. There is a correspondence between the features and the emission from laboratory samples of hydrogenated amorphous carbon. A search for C60 in emission or absorption proved negative. Amorphous carbon particles account for the broad emission features seen between 6 and 14 μm in the spectrum of each star. Based on observations with ISO, an ESA project with instruments funded by ESA member states (especially the PI countries: France, Germany, the Netherlands, and the UK) and with the participation of ISAS and NASA. |
en |
dc.format.extent |
186785 bytes |
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dc.format.mimetype |
application/pdf |
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dc.language.iso |
en |
en |
dc.publisher |
American Astronomical Society |
en |
dc.relation.uri |
http://www.journals.uchicago.edu/doi/abs/10.1086/321504 |
en |
dc.subject |
Stars: Circumstellar Matter |
en |
dc.subject |
Infrared: Stars |
en |
dc.subject |
Stars: Variables: Other |
en |
dc.title |
Infrared Space Observatory Spectra of R Coronae Borealis Stars. I. Emission Features in the Interval 3-25 Microns |
en |
dc.type |
Article |
en |