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Browsing Theses & Dissertations by Author "Turner, David Gerald, 1945-"
Now showing items 1-9 of 9
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(Halifax, N.S. : Saint Mary's University, 2008)We consider the possibility of cluster membership for 13 planetary nebulae that are located in close proximity to open clusters lying in their lines of sight. The short lifetimes and low sample size of intermediate-mass ...
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(Halifax, N.S. : Saint Mary's University, 1992)The high-velocity GL 490 outflow has been observed at high spatial resolution with the JCMT in three rotational transitions (J = 2[right arrow]1 of HBBW = 21", J = 3[right arrow]2 of HPBW = 15" and J = 6[right arrow] 5)of ...
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(Halifax, N.S. : Saint Mary's University, 1994)Photoelectric, photographic and CCD photometry, as well as spectroscopic observations and proper motion data for stars in the fields of the short-period galactic Cepheids V1726 Cygni and SU Cygni are presented and analyzed. ...
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(Halifax, N.S. : Saint Mary's University, 2006)The variability of the type C semi-regular (SRC) M3.5 Ia supergiant variable BC Cyg is examined with reference to measurements of its photographic B magnitude derived from 866 archival plates in the Harvard and Sternberg ...
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(Halifax, N.S. : Saint Mary's University, 1998)The results of UBV CCD photometry are presented for a newly discovered open cluster, as well as new photometry for thirty-seven members of the open cluster HM 1. The new open cluster, to be designated OCL 1104-610, has a ...
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(Halifax, N.S. : Saint Mary's University, 2012)Evidence is presented implying that the classical Cepheid VI[subscript c] period-Wesenheit function is relatively insensitive to metallicity. The results indicate that variations in chemical composition among Cepheids are ...
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(Halifax, N.S. : Saint Mary's University, 1993)Existing calibrations of white dwarf luminosities have invariably relied upon the inhomogeneous sample of refractor parallaxes published in the General Catalogue of Trigonometric Parallaxes. We have completed a new calibration ...
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(Halifax, N.S. : Saint Mary's University, 2011)SRC variables are evolved stars (mostly M supergiants) that vary in brightness with semi-regular periods ranging from several months to several years. Their light variation is caused by a combination of pulsation, convection, ...
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(Halifax, N.S. : Saint Mary's University, 1990)This thesis presents independently calibrated CCD surface photometry derived from 12 images of the shell galaxy NGC 2865 in the B, V, and R passbands. Short exposures were used to permit accurate sky subtraction. Mean ...
Now showing items 1-9 of 9