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A near infrared search for brown dwarfs in the Pleiades
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|Title:||A near infrared search for brown dwarfs in the Pleiades|
|Authors:||Simons, Douglas A.|
|Keywords:||Brown dwarf stars|
Stars -- Clusters
|Abstract:||Deep mosaic imaging of the Pleiades was conducted at wavelengths of 0.9 µm (I-band) and 2.2 µm (K-band) in an effort to find free-floating low mass cluster members. Fields outside of the cluster were also imaged as part of a control data set to check the overall significance of the results, leading to a total of 575 arcmin^2 of data. Photometry of all detected point sources led to the detection of 29±13 objects that lie near the lower Pleiades main sequence, when compared to the control data set. These objects have theoretical masses of ~0.1 to 0.04 solar masses and are described well by a power-law distribution with a slope of -2.8. The vast majority of the sources detected were background field stars. The derived number-magnitude counts for these field stars agree well with established Galaxy models, with a measured lower limit on the local space density of stars of 0.06 pc^-3 .|
Thesis (Ph. D.)--University of Hawaii at Manoa, 1990.
Includes bibliographical references.
xii, 178 leaves, bound ill. 29 cm
|Rights:||All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.|
|Appears in Collections:||Ph.D. - Astronomy|
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