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Photometry of yellow semi-regular variables - SS GEM
New photoelectric photometry of SS Gem is presented. The period analysisand light curve fits show that the formal period is the pulsation periodand there is a strong harmonic. The period variation of SS Gem is foundto be similar to that of AC Her. It is argued that being a Population Iobject, SS Gem is not a low-mass star in the post-AGB phase but anintermediate-mass variable related to classical Cepheids.
| The stellar distribution in the galactic anticenter.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1967AJ.....72.1199M&db_key=AST
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Membro dei seguenti gruppi:
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Osservazione e dati astrometrici
| Costellazione: | Gemelli |
| Ascensione retta: | 06h07m10.78s |
| Declinazione: | +22°25'15.0" |
| Magnitudine apparente: | 9.265 |
| Moto proprio RA: | 8 |
| Moto proprio Dec: | -18.3 |
| B-T magnitude: | 10.542 |
| V-T magnitude: | 9.371 |
Cataloghi e designazioni:
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