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HD 41596 and HD 36650 - Investigations of weak lambda 4077 in two marginal barium stars
HD 41596 and HD 36650 are two faint, Southern-Hemisphere marginal Ba IIstars that are reported in the Michigan Spectral Catalogue to haveunusually weak Sr II 4077-A line strengths compared to the Ba II 4554-Aline. An analysis of higher resolution spectra confirms theclassification for HD 41596, but the case for HD 36650 is not strong.Although an abundance determination is not practical with the material,the line-strength ratio of these two ground-state doublets indicates abarium to strontium abundance ratio greater than unity. This could beproduced by the s-process mechanism in a single, large neutron exposurebut not by an exponential distribution of exposures.
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Osservazione e dati astrometrici
| Costellazione: | Pittore |
| Ascensione retta: | 05h21m23.07s |
| Declinazione: | -51°34'31.2" |
| Magnitudine apparente: | 6.669 |
| Distanza: | 207.469 parsec |
| Moto proprio RA: | 24.9 |
| Moto proprio Dec: | 32 |
| B-T magnitude: | 7.916 |
| V-T magnitude: | 6.772 |
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