13,691 research outputs found
Prediction of academic success of Bouve-Boston School.
Thesis (M.Ed.)--Boston Universit
A New Look at Open Cluster NGC 6520
We use CCD and photoelectric photometry with Stromgren filters along with
medium resolution spectra to investigate NGC 6520, an open cluster very nearly
in the direction of the galactic center. We find an age of 60 Myr, a distance
of 2 kpc, and an average reddening E(b-y) = 0.295, but which increases toward
the south. The average heliocentric radial velocity of the B stars is -29
km/sec, while the velocity of the nearby Barnard 86 is about 0 (heliocentric,
-11 km/sec compared to the LSR). This velocity difference amounts to about 1.8
kpc since the cluster formed, implying that it is extremely doubtful NGC 6520
is related to Barnard 86.Comment: 19 pages, 6 figure
Embedding into Banach spaces with finite dimensional decompositions
This paper deals with the following types of problems: Assume a Banach space
has some property (P). Can it be embedded into some Banach space with a
finite dimensional decomposition having property (P), or more generally, having
a property related to (P)? Secondly, given a class of Banach spaces, does there
exist a Banach space in this class, or in a closely related one, which is
universal for this class?Comment: 26 page
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