Shell stars in the Geneva photometric system

Details Shell stars in the Geneva photometric system Shell stars in the Geneva photometric system

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...177..193h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 177, no. 1-2, May 1987, p. 193-197. SNSF-supported research.

Astronomy and Astrophysics

Astrophysics

3

Astronomical Photometry, B Stars, Metallic Stars, Shell Stars, Stellar Envelopes, Balmer Series, F Stars, Stellar Evolution

Scientific paper

The behavior of Be/Ae stars and shell stars in a d vs Delta diagram clearly shows that the majority of shell stars have a greater Balmer jump than normal stars. This result is in agreement with that of Divan (1979) for 48 Lib, a B2IV e-shell star. However, out of the 45 shell stars measured in the Geneva system, 26 are A or F stars, of which 16 have a Balmer jump that is greater than normal. This result suggests that A-F type shell stars represent the cool end of the Be-star sequence.

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