For the purchase of a Fortran compiler for a Macintosh Classic computer. The compiler will be used to create a version of the Wilson-Devinney computer program. The Wilson-Devinney program is used extensively to model the light curves of eclipsing binary stars. The compiled version will be made available to other binary star researchers and will be used for research on the RZ Tauri and V1073 Cygni stars.
Grant Recipients in 1993
Grant Recipients $15,791
For the purchase of a set of five one inch diameter glass filters in order to facilitate the use of the Bessell formulation and correspond approximately to the original U, B, V, R and I Johnson defined filters. These filters would be used in a program of multi-color photometry of the cores of OB associations in order to determine the low end (special types later than B) mass function in these regions.
For the construction of a Direct Fiber Feed (DFF) to bring light from the focal plane of the 60-inch telescope at the Center’s Mt. Hopkins Whipple Ovservatory to the Center’s Advanced Fiber Optic Echelle. This will substantially increase the efficiency of the instrument for high velocity precision research projects such as detection of low mass stellar companions and extra-solar planetary systems.
For the purchase of a 2-Gbyte hard disk memory to improve the efficiency of a computer used to reduce data from the observation of trans-Neptunian objects near the detection limit of conventional telescopes (22-24 mag). The reduction and search for these trans-Neptunian objects is essential in identifying new objects for subsequent physical studies of our outer solar system.
For the purchase of a 486 class microcomputer to be used for reducing and analyzing CCD data. Research would include observation of d Scuti stars in clusters of various ages to study possible aging effects in the observed pulsation to determine the possibility that evolutionary changes in d Scuti stars may be measured through changes in their pulsations. The microcomputer will also be used to build a database from which possible asteroseismological studies could be done.
For the purchase of an exabyte tapedrive for a Sparc 1+ workstation used by faculty and students to conduct research. The research focuses on understanding the abundance patterns of elements heavier than iron. An analysis of these abundance patterns is useful in the study of the chemical evolution of our galaxy.
For the purchase of an X-term graphics terminal for data reduction and analysis. The data will constitute the observational side of a project to determine the understanding of galaxy formation and the origin of the differences between spiral and elliptical galaxies. Specifically, the Center will test the hypothesis that ellipticals are formed by the merger of spirals. This possibility has been debated for decades, but until recently no definitive tests of the hypothesis were possible.
For the purchase of a 1.2 gigabyte hard disk to supplement storage capacity on two Sun workstations. This storage will be used to support an ongoing program to investigate the nature of galaxies in the Bootes void. Early results have demonstrated that the galaxies observed in the void do not have the characteristics predicted for galaxies in low density environments.
For the purchase of an IDL software package (Interactive Data Analysis Language). Research will include a program for the interferometric measurement of binary stars to improve our knowledge of the mass-luminosity relationship, a study of systematic errors involved in measuring radial and pulsational velocities of Cepheid variable stars with the aim of improving the calibration of the Cepheid period-luminosity relation and a study of high-resolution infrared spectra for a set of standard stars to provide the means for determining accurate absolute effective temperatures.