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Pseudocepheids. I - R Puppis, HR 4441, HR 4511, and AI CMI
Four PC stars which are all thought to be high-mass objects, areconsidered. It is noted that R Pup and HR 4441 are apparentlyvery-high-luminosity stars for which the photometric indices areuncomplicated by photometrically unresolved companions or circumstellarmaterial. HR 4511 is seen as illustrating the effect of a close,early-type companion, and it is believed that the photometry of AI CMimay be strongly affected by circumstellar material. On the basis ofobservations of nonvariable stars covering the magnitude rangerepresented, a mean dispersion of 0.005 mag is expected in all colorindices.
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Observation and Astrometry data
| Constellation: | こいぬ座 |
| Right ascension: | 07h33m13.67s |
| Declination: | +00°09'51.5" |
| Apparent magnitude: | 7.392 |
| Distance: | 699.301 parsecs |
| Proper motion RA: | -1 |
| Proper motion Dec: | -3.5 |
| B-T magnitude: | 7.25 |
| V-T magnitude: | 7.381 |
Catalogs and designations:
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