Calcium depletion toward moderately reddened stars

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/163438· OSTI ID:5525194

Joseph, C L; Snow, Jr, T P; Morrow, C

Calcium depletions toward five moderately reddened (E/B - V/ greater than 0.35 and less than 0.45) stars and toward HD 147889, a heavily reddened (E/B - V/ = 1.08) member of the Rho Ophiuchi cloud complex is reported. A developmental Multi-Anode Microchannel Array Detector was used to collect the data; its performance is characterized. Comparing the results for calcium from one line of sight to another and to those for other species, it is found that calcium exhibits a depletion pattern remarkably similar to that of silicon. The depletion of iron, on the other hand, has smaller variations and therefore does not correlate as well. Also, the depletion results for manganese and sulfur, both normally undepleted in diffuse clouds, have been included for comparison. 33 references.

• Research Organization: Colorado Univ., Boulder
• OSTI ID: 5525194
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 296; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ABUNDANCE
ALKALINE EARTH METALS
ATMOSPHERES
CALCIUM
COSMIC GASES
ELEMENTS
FLUIDS
GASES
INTERSTELLAR SPACE
IRON
MANGANESE
METALS
NONMETALS
SPACE
STELLAR ATMOSPHERES
SULFUR
TRANSITION ELEMENTS