NASA NTRS · 19850048767
On the detection of rubidium in diffuse interstellar clouds
Abstract
A search for absorption from neutral rubidium at 7800 A was conducted. No evidence for absorption to a 3 sigma limit of less than 1.5 mA was seen in the diffuse interstellar gas toward the stars omicron Persei, zeta Persei, and zeta Ophiuchi. Present results do not confirm the detection by Jura and Smith (1981) toward zeta Oph. A possible reason for the discrepancy is presented. In light of the present measurements, the abundance of interstellar rubidium in reconsidered.
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Federman, S. R., Sneden, C., Schempp, W. V., Smith, W. H.. 1985-03-15. On the detection of rubidium in diffuse interstellar clouds. https://ntrs.nasa.gov/citations/19850048767
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