Luminous late-type stars in reflection nebulae and/or in very young stellar clusters

Details Luminous late-type stars in reflection nebulae and/or in very young stellar clusters Luminous late-type stars in reflection nebulae and/or in very young stellar clusters

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....98..341g&link_type=abstract

Astronomy and Astrophysics, vol. 98, no. 2, May 1981, p. 341-343. Research supported by the Statens Naturvetenskapliga Forsknin

Astronomy and Astrophysics

Astrophysics

1

Late Stars, Nebulae, Star Clusters, Stellar Evolution, Stellar Luminosity, Abundance, Cepheid Variables, Hertzsprung-Russell Diagram, Interstellar Matter, Lithium, Optical Reflection, Red Giant Stars

Scientific paper

Ten luminous late-type stars, mainly red giants, are observed at Stockholm Observatory in the reflection nebula dust clouds and in very young stellar clusters. These late type stars are checked for surface lithium, which, if found in an abundance close to the interstellar value, would classify them as pre-main-sequence stars. All the stars in the study were found to have Li abundances well below their initial abundance, and it is concluded that they are evolved stars, which happened to pass through the dense interstellar clouds or the young stellar regions.

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