Calcium depletion toward moderately reddened stars

Journal Article · Sun Sep 01 00:00:00 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), Vol. 296
• Country of Publication: United States
• Language: English

Related Subjects

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