HD 157354

내용

Study of Neglected Variable Stars Classified as Type II Cepheids Four variable stars classified as Type II Cepheids have been studiedpartly based on new photometry and the Hipparcos photometric data. Thecorrect period is derived for V341 Ara and NW Pav and it is pointed outthat RR Mic and V1711 Sgr do not belong to Type II Cepheids, insteadthey may be semi-regular variables. The cycle length of theirvariability is also determined.
UBV (RI)c standard stars in the E- and F-regions and in the Magellanic Clouds - a revised catalogue. Not Available
UBV photometry of E region standard stars of intermediate brightness Photometry data are given for 335 stars in the nine E regions.Observations were made using a photometer and filters on the 47 cmreflector at Cape Town. The stellar dispersions are summarized. Data arepresented in tabular form.
Some Variable Stars in the SRS Catalogue Not Available
Photometric standard stars for the UBV and (RI)KC systems. Not Available
Fainter Standards for VRI Photometry in the E Regions Not Available
Standard magnitudes in the E regions. Not Available

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