MG 2 emission of Pop. 2 long-period Cepheids

Details MG 2 emission of Pop. 2 long-period Cepheids MG 2 emission of Pop. 2 long-period Cepheids

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984nascp2349..342p&link_type=abstract

In NASA. Goddard Space Flight Center Future of Ultraviolet Astronomy Based on Six Years of IUE Res. p 342-434 (SEE N85-20961 1

Astronomy and Astrophysics

Astronomy

Cepheid Variables, Chemiluminescence, Iue, Magnesium, Pulse Time Modulation, Ultraviolet Spectra, Variable Stars, Cepheus Constellation, Emission Spectra, Photosphere, Ultraviolet Astronomy

Scientific paper

The Population II Cepheid pulsational variables AL Vir (P = 10.3 days) and W Vir (P = 17.3 days) were observed with IUE at two phases each. Only low-dispersion mid-UV exposures were feasible, but were sufficient to show a great range in Mg II emission behavior. The relationship to phase variation of emission in classical (Pop I) Cepheids of long period is unclear.

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