On the UV classification of the AM stars

Details On the UV classification of the AM stars On the UV classification of the AM stars

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....89..380j&link_type=abstract

Astronomy and Astrophysics, vol. 89, no. 3, Sept. 1980, p. 380, 381.

Astronomy and Astrophysics

Astrophysics

1

A Stars, Metallic Stars, Stellar Radiation, Ultraviolet Radiation, Classifications, Stellar Atmospheres, Stellar Models

Scientific paper

The ultraviolet spectra, observed by TD1, of 33 Am stars and of 25 normal stars of luminosity class IV and V were analyzed. If two different temperature indicators are used, normal stars fall, as expected, on a narrow sequence; in the Am stars on the other hand the two indicators disagree. This is reminiscent of the situation existing in the 3600-4800 A region where different spectral types can be derived from different features. This is attributed to increased blanketing caused by the enhancement of metals, but no detailed atmospheric models are available to check the results.

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