Tag Archive for Astronomy Department

Students, Faculty, Alumni Present Research at 50th Annual Planetary Science Conference

Jeremy Brossier presented a talk titled "Radiophysical Behaviors of Venus’ Plateaus and Volcanic Rises: Updated Assessment." He also presented a poster titled "Complex Radar Emissivity Variations at Some Large Venusian Volcanoes."

At left, earth and environmental sciences postdoctoral research associate Jeremy Brossier presented a poster titled “Complex Radar Emissivity Variations at Some Large Venusian Volcanoes” during the Lunar and Planetary Science Conference in Texas.

Several Wesleyan students, faculty, and alumni attended the 50th Lunar and Planetary Science Conference (LPSC) March 18-22 in The Woodlands, Texas. Members of the Wesleyan Planetary Sciences Group presented their research on a range of planetary bodies.

This annual conference brings together international specialists in petrology, geochemistry, geophysics, geology, and astronomy to present the latest results of research in planetary science.

Earth and environmental studies major Emmy Hughes ’20 presented a poster titled “Observations of Transverse Aeolian Ridges in Digital Terrain Models” during a session on “Planetary Aeolian Processes.”

Earth and environmental science graduate student Reid Perkins MA ’19 presented a talk titled “A Reassessment of Venus’ Tessera Crater Population and Implications for Tessera Deformation” and a poster titled “Volumes and Potential Origins of Crater Dark Floor Deposits on Venus.”

Klusmeyer Receives a Chambliss Award for Astronomy Research

After a star forms, a dusty ring of space debris may begin orbiting around a star. These circumstellar disks are composed of asteroids or collision fragments, cosmic dust grains, and gasses.

Astronomy graduate student Jessica Klusmeyer is interested in understanding the molecular composition of the debris disk gas. “It has important implications not only for our knowledge of debris disks but also for planet formation,” she said.

Klusmeyer joined more than 25 Wesleyan affiliates and shared her research during the 233rd American Astronomical Society Meeting Jan. 6-10 in Seattle, Wash. The American Astronomical Society (AAS) awarded Klusmeyer a Chambliss medal for her poster presentation titled, “A Deep Search for Five Molecules in the Debris Disk around 49 Ceti.”

The Astronomy Achievement Student Awards recognize exemplary research by undergraduate and graduate students who present at one of the poster sessions at the meetings of the AAS. Awardees are honored with a Chambliss medal or a certificate.

Klusmeyer competed for the Chambliss award against hundreds of graduate and PhD students from research universities around the country.

A second-year masters student, Klusmeyer is working on the project with her advisor, Meredith Hughes, assistant professor of astronomy and assistant professor, integrative sciences.

“Professor Hughes has a very active and supportive research group that covers a wide variety of circumstellar disks and planet formation topics,” Klusmeyer said. “She works in radio wavelengths of light and the group often utilizes data from the world-class Atacama Large Millimeter/submillimeter Array (ALMA) telescope.”

Klusmeyer joined Hughes’s group during her first year of graduate school and is working on unlocking the molecular composition of a nearby debris disk surrounding 49 Ceti, a star located in the constellation of Cetus. Cetus, which is named after a Greek sea monster, resembles the shape of a whale and can be viewed from campus (or as far away as Chile!).

Scientists once thought that debris disks would lose their gas composition after planet formation, however, more than 20 debris disks containing molecular carbon monoxide gas have already been detected by astronomers.

“Our project wants to understand the nature of this gas,” Klusmeyer explained. “Is it leftover material from when the star formed, or is it constantly being produced in collisions from exocomets or other small bodies orbiting around 49 Ceti?”

If a debris disk has gas, “it may provide a longer period of time for gas giant planet formation or we could detect other molecules commonly found in comets and have the first glance at the molecular composition of comets around other stars,” she said.

Girish Duvvuri ’17 received a Chambliss medal in 2018. Read more.

Students, Faculty, Alumni Attend American Astronomical Society Meeting

Mark Popinchalk ’13

Roy Kilgard and Mark Popinchalk ’13.

More than 25 Wesleyan affiliates attended the 233rd American Astronomical Society Meeting Jan. 6-10 in Seattle, Wash. All current Wesleyan students who attended presented posters of their research.

Campus attendees included: Bill Herbst, the John Monroe Van Vleck Professor of Astronomy and professor, integrative sciences; Roy Kilgard, associate professor of the practice in astronomy and associate professor of the practice, integrative sciences; Michael Henderson ’19; Allison Quintana ’19; graduate student Jessica Klusmeyer; graduate student Ismael Mireles; and graduate student Anthony Santini ’18.

Alumni included Hannah Fritze ’18, Aylin Garcia Soto ’18, Prajwal Niraula MA ’18, Amy Steele MA ’14, Nicole Arulanantham MA ’15, Mark Popinchalk ’13, Marshall Johnson ’11, Anna Williams ’09, Ken Rumstay MA ’77, Taft Armandroff ’82, Phil Choi ’95, Anil Seth ’98, Evan Tingle ’08, MA ’09, Diana Windemuth MA ’13, Trevor Dorn-Wallenstein ’15, Clara Moskowitz ’05, Emily Leiner ’10.

Diana Windemuth MA ’13 and Aylin Garcia Soto ’18

Diana Windemuth MA ’13 and Aylin Garcia Soto ’18.

Former graduate student Colin Littlefield, and former post-doctoral researchers Vicki Sarajedini and John Cannon also attended.

In addition, five college students who participated in the Keck Northeast Astronomy Consortium’s (KNAC) summer Research Experiences for Undergraduate (REU) program at Wesleyan attended the meeting. Karina Cooper, Sadie Coffin, Aleezah Ali, Katie Chapman, and Diego Garcia worked at Wesleyan’s observatory last summer and were under the direction of Wesleyan faculty and students.

View additional photos of the meeting in this Van Vleck Observatory blog.

5 Students Receive NASA Connecticut Space Grant Consortium Fellowships, Awards

Two graduate students and three undergraduate students are recipients of Fall 2018 NASA Connecticut Space Grant Consortium (CTSGC) awards. They are among 39 students from 13 CTSGC academic affiliate institutions to be honored.

NASA CTSGC is a federally mandated grant, internship, and scholarship program that is funded as a part of NASA Education. There are Space Grant Consortia in all 50 states, plus Washington, D.C., and Puerto Rico.

Earth and environmental science graduate student Christina Cauley received an $8,000 Graduate Research Fellowship for her project “Chemistry and Biology of Giant Hydrothermal Mounds in Paulina Lake, Oregon.” Her advisor is Joop Varekamp, the Harold T. Stearns Professor of Earth Science and Smith Curator of Mineralogy and Petrology of the Joe Webb Peoples Museum of Natural History. Varekamp also is professor of earth and environmental sciences; professor, environmental studies; and professor, Latin American studies.

Astronomy major Hunter Vannier ’20 received a $5,000 Undergraduate Research Fellowship for his project titled “Using Hubble to Look Back at the Sun’s Historical Trajectory Through the Local Interstellar Medium.” Vannier’s advisor is Seth Redfield, chair and associate professor of astronomy. Redfield also is associate professor, integrative sciences, and co-coordinator, planetary science.

Three other students received $1,000 Student Travel Grants, which covered travel expenses to attend the American Astronomical Society Meeting in Seattle, Wash., in January.

At the meeting, Astronomy major Michael Henderson ’19 presented his senior thesis research titled “High Precision Photometry of Faint White Dwarf Stars from K2 Data.” Henderson’s advisor is Seth Redfield.

Astronomy graduate student Ismael Mireles, presented his master’s thesis research on “Searching for planets around the brightest stars in K2.” Mireles’s advisor is Seth Redfield.

And astronomy graduate student Anthony Santini ’18 presented his BA/MA thesis research titled “Determining Fundamental Properties of Galaxies with X-ray Binary Correlations.” Santini’s advisor is Roy Kilgard, associate professor of the practice in astronomy and associate professor of the practice, integrative sciences.

Wesleyan in the News

In this recurring feature in The Wesleyan Connection, we highlight some of the latest news stories about Wesleyan and our alumni.

Recent Wesleyan News

1. Los Angeles Times“As the World Warms, Deadly and Disfiguring Tropical Diseases Are Inching Their Way Toward the U.S.”

In this op-ed, Professor of Biology Frederick Cohan and Isaac Klimasmith ’20, both in the College of the Environment, write that infectious disease is a growing threat, resulting from climate change, that humans may find hard to ignore. Cohan is also professor, environmental studies and professor, integrative sciences.

2. Hartford Courant: “Trump’s Immoral Response to Climate Report”

Gary Yohe, the Huffington Foundation Professor of Economics and Environmental Studies, writes in this op-ed that it is “irresponsible” and “immoral” to ignore the findings of a major new report on climate change. Delaying action to mitigate and adapt to climate change will be increasingly damaging and expensive, he writes. Yohe is also professor of economics and professor, environmental studies, and was a reviewer on the new National Climate Assessment. He also recently co-authored an op-ed in HuffPost titled “People Are Already Dying by the Thousands Because We Ignored Earlier Climate Change Warnings.” 

3. National Geographic: “Both of NASA’s Voyager Spacecraft Are Now Interstellar. Where to Next?”

With both of NASA’s twin Voyager spacecraft now having crossed the threshold into interstellar space, Seth Redfield, associate professor and chair of astronomy, comments on what the spacecraft are likely to encounter on their journey. Redfield is also associate professor, integrative sciences, and co-coordinator of Planetary Science.

4. Inside Higher Ed: “Ordinary Education in Extraordinary Times”

President Michael Roth writes in this op-ed that in uncommon times, “traditional educational practices of valuing learning from people different from ourselves have never been more important.”

Recent Alumni News

  1. The Takeaway; WNYC Studios: “Politics with Amy Walter: Pentagon’s First-Ever Audit Exposes Massive Accounting Fraud”

David Lindorff ’71, the investigative journalist who wrote an exclusive on the topic for The Nation, joins Walter’s guests—including Staff Sergeant Patricia King, Ambassador Eric Edelman, and Dr. Isaiah Wilson III, a retired Army colonel and senior lecturer with Yale University’s Jackson Institute for Global Affairs—to discuss military spending and its alignment with the military’s strategic goals.

Redfield Speaks at California Academy of Sciences

Seth Redfield

Seth Redfield

On Oct. 15, Seth Redfield, associate professor and chair of astronomy, gave a lecture at the Morrison Planetarium at the California Academy of Sciences. He was invited to speak as part of the Benjamin Dean Astronomy Lecture series. The title of his talk was, “Exploring Our Galactic Neighborhood.” The talk will be posted to the Academy’s iTunes University site.

Redfield is also associate professor, integrative sciences, and co-coordinator, planetary science.

 

Sundial Sculpture Installed on Van Vleck Observatory

Seth Redfield, chair and associate professor of astronomy, associate professor of integrative sciences, and artist Robert Adzema observe a sundial's installation July 16 at the Van Vleck Observatory. Adzema, a maker of site-specific sundials, designed the sculpture to be placed at its exact location on the telescope's wall.

Seth Redfield, chair and associate professor of astronomy, associate professor of integrative sciences, along with artist Robert Adzema observed the sundial’s installation July 16 at the Van Vleck Observatory. Adzema, a maker of site-specific sundials, designed the sculpture for this exact location below the telescope’s dome.

The campus community now has the ability to tell time the way Egyptians did more than 3.500 years ago—by using light and shadows.

A modern-day sundial, which mimics those used throughout history, now hangs on the south side of the Van Vleck Observatory’s 24-inch Perkin telescope. The six-foot-square structure is fabricated from 3/16-inch thick Muntz metal bronze with stainless steel reinforcing.

“Campus doesn’t have enough outside art,” said Joyce Jacobsen, provost and senior vice president for academic affairs. “A sundial is a perfect piece because it’s not only aesthetically pleasing but it’s functional too.”

Bill Herbst, John Monroe Van Vleck Professor of Astronomy, along with Jacobsen, had been pitching the idea of a sundial to the Wesleyan administration for many years. In 2016, the plan was approved by all involved parties, including the President’s Office and Physical Plant-Facilities. Jacobsen and Herbst commissioned sundial creator and artist Robert Adzema of New York to design and build a sundial for Wesleyan’s campus. After visiting campus six times and crafting multiple paper and wooden models, Adzema completed the time-telling sculpture in 18 months.

“Sundials can be designed for almost any fixed surface that receives sunlight,” Adzema said. “The most precise dials, as is this dial, here at Wesleyan, are made to the exact longitude and latitude of the site.”

On July 16, crews from New Jersey traveled to campus and began installing the 650-pound sundial. Adzema also attended to offer guidance and direction.

“It’s a great location in terms of being visible without being intrusive,” Jacobsen said. “We will also have an entry now in the online listing for sundials around the world, so now maybe we will have yet more people visit campus, drawn here by the sundial!”

Photos of the sundial’s installation are below: (Photos by Olivia Drake)

Crews used a scissor lift to lift and install the 650-pound sundial.

Duvvuri ’17 Awarded Chambliss Award for Astronomy Research

Girish Duvvuri ’17 presented his research titled “Necroplanetology: Disrupted Planetary Material Transiting WDII45+017.” His advisor is Seth Redfield, associate professor of astronomy.

Girish Duvvuri ’17 presented his research titled “Necroplanetology: Disrupted Planetary Material Transiting WDII45+017″ at a poster session in 2017.

In recognition of his exemplary research at Wesleyan, astronomy major Girish Duvvuri ’17 has been awarded a Chambliss medal from the American Astronomical Society (AAS).

Duvvuri, who majored in astronomy, physics, and English, received the award during the 232nd AAS Meeting June 3–7 in Denver, Colo.

There, he presented a study that formed much of his senior thesis at Wesleyan. Seth Redfield, associate professor and chair of astronomy, associate professor of integrative sciences, and co-coordinator of planetary science, served as Duvvuri’s advisor.

To be eligible for an award, work featured on a poster must have been done within the past year and while the presenter was an undergraduate or graduate student.

Duvvuri is currently a PhD student in astronomy at the University of Colorado in Boulder.

Students Receive Research Awards from NASA

Three undergraduates and one graduate student received NASA Connecticut Space Grant Awards from the NASA Connecticut Space Grant Consortium (CTSGC). The CTSGC is a federally mandated grant, internship, and scholarship program that aims to inspire the pursuit of careers in science, technology, engineering, and mathematics.

Astronomy and math major Nicole Zalewski ’20 received a $5,000 undergraduate research fellowship to pursue her study on “Measurement of the Radar Properties of the Oldest Rocks on Venus to Constrain Mineralogy.” Her advisor is Martha Gilmore, the George I. Seney Professor of Geology, professor of earth and environmental sciences, co-coordinator of planetary science, and director of graduate studies.

Wesleyan-Led Astronomy Consortium Joins Association of Universities for Research in Astronomy

The Association of Universities for Research in Astronomy (AURA), which operates the Hubble Space Telescope, the James Webb Space Telescope, the U.S. National Optical Astronomy Observatory (NOAO), and other major astronomical research facilities in the United States, has elected the Keck Northeast Astronomy Consortium (KNAC)—led by Wesleyan University—as a new member. This historic development represents the first time that liberal arts institutions have been invited to join the association and serves as an important recognition of the value of such programs, not just to education, but also to frontier research in astronomy.

Seth Redfield, campus director of the NASA CT Space Grant Consortium, reports that several students and faculty have recently been awarded grants for their research in astronomy. Photo c/o Redfield

Seth Redfield

“This is a tremendous recognition of the important impact that the Keck Consortium and our individual institutions have on the astronomy research landscape, and it literally gives us a seat at the table in terms of influencing the future of astronomy in the United States,” says Seth Redfield, associate professor and chair of astronomy at Wesleyan. “This is a validation of our impact in research and preparing future generations of astronomers (many of whom go on to PhD programs or postdocs or faculty positions at the large research institutions already on the board of AURA),” Redfield adds. “We are thrilled to have a voice from smaller institutions in shaping the future of our field.”

Star, Planet Formation Expert Delivers Sturm Lecture

On March 27, the campus community gathered to hear the 2018 Sturm Memorial Lecture, titled "Building Stars, Planets and the Ingredients for Life in Space."

On March 27, the campus community gathered in the Ring Family Performing Arts Hall to hear the 2018 Sturm Memorial Lecture, titled “Building Stars, Planets and the Ingredients for Life in Space.” This annual event in memory of Wesleyan alumnus Kenneth Sturm ’40 is held in the spring and is open to the public. It features a presentation from an astronomer who is outstanding in their field and able to communicate the excitement of science to a lay audience.

Alumni, Faculty, Graduate Students Make Presentations at Planetary Science Conference

Melissa Luna E&ES MA ’18, Jordyn-Marie Dudley E&ES MA ’18, Keenan Golder MA ’16, Reid Perkins E&ES MA ’19, Ben McKeeby MA ’17, Kristen Luchsinger MA ‘17

Graduate student Melissa Luna; graduate student Jordyn-Marie Dudley; Keenan Golder MA ’13; graduate student Reid Perkins; Ben McKeeby MA ’17; and Kristen Luchsinger MA ’17 recently attended the Lunar and Planetary Science Conference in Texas.

Faculty, graduate students, and alumni attended the 49th Lunar and Planetary Science Conference March 19–23 in The Woodlands, Texas.

Graduate student Reid Perkins

Three graduate students were awarded funds from the NASA Connecticut Space Grant that allowed them to travel to this meeting.

Earth and environmental sciences graduate student Reid Perkins presented a research poster titled “Where Are the Missing Tessera Craters on Venus?” Perkins’s advisor is Martha Gilmore, the George I. Seney Professor of Geology, professor of earth and environmental sciences.

Earth and environmental sciences graduate student Melissa Luna presented a poster titled “Multivariate Spectral Analysis of CRISM Data to Characterize the Composition of Mawrth Vallis.” Her advisors are Gilmore and Suzanne O’Connell, professor of earth and environmental sciences.

Earth and environmental sciences graduate student Jordyn-Marie Dudley presented a poster titled “Water Contents of Angrites, Eucrites, and Ureilites and New Methods for Measuring Hydrogen in Pyroxene Using SIMS.” Dudley’s advisor is Jim Greenwood, assistant professor of earth and environmental sciences.

“At their poster presentations, our graduate students were engaging with the top scientists in our field, who were very interested in their work,” Gilmore said. “I was very proud to see them attending talks across a range of disciplines, asking questions of speakers and making such solid scientific contributions.”

Gilmore also presented a study at the conference titled “Formation Rates and Mechanisms for Low-Emissivity Materials on Venus Mountaintops and Constraint on Tessera Composition.” In addition, she worked with NASA scientists on issues related to Venus exploration.

The following alumni authored abstracts presented at the conference: Avram Stein ’17; Jesse Tarnas ’16; Peter Martin ’14Nina Lanza MA ’06; Ian Garrick-Bethell ’02Robert Nelson MA ’69; and William Boynton ’66. Keenan Golder MA ’13; Ben McKeeby MA ’17; and Kristen Luchsinger MA ’17 also attended.