A UBV study of the field of NGC 7790

Takala, John Michael

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dc.contributor.advisor	Mitchell, George Ferguson, 1941-
dc.creator	Takala, John Michael
dc.date.accessioned	2011-05-09T12:31:25Z
dc.date.available	2011-05-09T12:31:25Z
dc.date.issued	1988
dc.identifier.other	QB813 T34 1988
dc.identifier.uri	http://library2.smu.ca/xmlui/handle/01/22086
dc.description	vi, 106 leaves : ill. ; 28 cm.
dc.description	Bibliography: leaves 102-105.
dc.description.abstract	This thesis presents a UBV study of the field of the open cluster NGC 7790, which has three Cepheids within its boundaries. Photographic plates taken at CFHT were measured on an Astromechanics Iris Photometer. The distance modulus of the cluster was found to be 12.25 [plus-minus sign] 0.10. A trend in reddening with spectral type was detected; (E [subscript B-V] = 0.40 [plus-minus sign] 0.06 s.d. for stars with (B-V) [subscript zero] > 0.10 and (E [subscript B-V]) = 0.57 [plus-minus sign] 0.07 s.d. for stars with (B-V) [subscript zero] <0.10. The implied luminosities of the Cepheids in NGC 7790 from the calculated cluster distance are in agreement with recent calibrations of the period-luminosity and period-luminosity-colour relations.
dc.description.provenance	Made available in DSpace on 2011-05-09T12:31:25Z (GMT). No. of bitstreams: 0	en
dc.language.iso	en
dc.publisher	Halifax, N.S. : Saint Mary's University
dc.subject.lcc	QB813
dc.subject.lcsh	Parallax -- Stars
dc.subject.lcsh	Stars -- Photographic measurements
dc.subject.lcsh	Stars -- Open clusters
dc.subject.lcsh	Cepheids
dc.title	A UBV study of the field of NGC 7790
dc.type	Text
thesis.degree.name	Master of Science in Astronomy
thesis.degree.level	Masters
thesis.degree.discipline	Astronomy
thesis.degree.grantor	Saint Mary's University (Halifax, N.S.)