With a tour-de-force spectral analysis, these students along with Professor Cheng and her collaborators have re-evaluated all published Lambda-Boo star candidates and their available spectra.

The possible link between Lambda Boo stars and planet-bearing stars motivated the group to take up a systematic study of Lambda Boo stars.

In their recent Astronomical Journal publication, using observed and synthetic spectra, they explored the physical basis for the classification of Lambda Boo stars, and developed quantitative criteria that discriminate metal-poor stars from bona fide Lambda Boo stars. 

Their collaborators include James Neff at the College of Charleston and at NSF, Richard Gray at Appalachian State University, and Christopher Corbally at the Vatican Observatory.

The team presented their preliminary findings at last year's AAS January meeting in Seattle and their more recent efforts at this year's AAS January meeting in Kissimmee, FL.

Last fall,Dustin received his BS degree in physics, which included several semesters of independent study with Professor Cheng. He has joined our masters program and works as an astronomy TA besides continuing his star research with Professor Cheng.

Erik and Christopher are completing their BS degree requirements in physics and have worked for several semesters with Professor Cheng.L to R: Erik, Dustin, Professor Cheng, and ChristopherL to R: Erik, Dustin, Professor Cheng, and Christopher