Treasures of the night sky: Pairs of stars orbit around each other so closely their outer atmospheres touch, so they dim and brighten.
Two Dallas high school students discovered five stars as members of an SMU summer physics research program that enabled them to analyze data gleaned from a high-powered telescope in the New Mexico desert.
All five stars are eclipsing contact binary stars, pairs of stars that orbit around each other so closely that their outer atmospheres touch. As the stars eclipse, they dim and then brighten as one emerges from behind the other. These stars are categorized as variable stars, stars that change brightness, which make up half the stars in the universe.
Lake Highlands High School seniors Dominik Fritz and Jason Barton are the first high school researchers at SMU to discover new stars.
New discoveries in Pegasus and Ursa Major are registered with the Variable Star Index
The stars are located in the northern sky constellations of Pegasus and Ursa Major, but can’t be seen by the naked eye.
Their discoveries have been accepted into the American Association of Variable Star Observers International Variable Star Index (VSX).
Working in a campus science building basement laboratory, the students used analysis software, perseverance and patience to parse the data collected (but never analyzed for the purpose of studying binary stars) in 2000 by Robert Kehoe, SMU associate professor of physics.
Kehoe collected the data through ROTSE-I, a prototype robotic telescope at Los Alamos, New Mexico.
“Scientists are driven by the sense of discovery,” says Kehoe, who took the data originally to study gamma ray bursts. “These students can lay claim to information that didn’t exist before their research.”
SMU only university in North Texas offering the nation’s QuarkNet program
Fritz and Barton are among nine high school students and two high school physics teachers conducting physics research at SMU through the QuarkNet program.
QuarkNet is a physics teacher development program with 50 centers at U.S. universities and national laboratories. Funded by the National Science Foundation and the U.S. Department of Energy, the program gives teachers and students opportunities to learn about the most recent discoveries in physics.
Other sponsors include two of the world’s leading high-energy physics research centers — CERN in Switzerland and Fermilab in Illinois. SMU is one of four Texas universities to offer the QuarkNet program and the only QuarkNet university in North Texas.
“High school physics curriculum includes very little modern physics,” says Simon Dalley, a member of the SMU physics faculty and coordinator of its QuarkNet program. “This hurts recruitment to the field and prevents the general population from understanding physics’ contribution to the modern world.”
Ken Taylor, Lake Highlands High School physics teacher, is determined to introduce new physics research to his students. He has participated in QuarkNet at SMU since 2000, seizing opportunities to join physics researchers at high-energy particle colliders at CERN and Fermilab. This is the first summer he has selected students to join him in physics research at SMU.
“I like to support students beyond the classroom walls,” he says. “These students have gone through the whole process of scientific discovery and can use these projects as jumping off points for the next phases of their lives.”
With acceptance into the VSX catalog of variable stars, the students’ names are forever linked with their stars on the official registry.
But instead of creating new star names, star discoverers follow a protocol that includes the name of the telescope and the stellar coordinates.
Both students plan to pursue science careers, Fritz in nuclear engineering and Barton in medicine.
Other student QuarkNet researchers include KeShawn Ivory from Garland High School and Madison Monzingo and Lane Toungate from Lake Highlands High School. In addition, Hockaday School teacher Leon de Oliveira and his four students – Eliza Cope, Allison Aldrich, Sarah Zhou and Mary Zhong — also conducted QuarkNet research this summer.
“These students have made a real contribution to science,” says Farley Ferrante, the former high school physics teacher and current SMU astrophysics graduate student who supervised the students’ research. “A better understanding of variable stars helps us to understand the age and formation of the universe; the sun, which is a variable star; and even the possibility of extra-terrestrial life.” — Nancy George
SMU is a nationally ranked private university in Dallas founded 100 years ago. Today, SMU enrolls nearly 11,000 students who benefit from the academic opportunities and international reach of seven degree-granting schools. For more information see www.smu.edu.
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