The Jefferson Scholars Foundation has announced the names of 29 students selected to receive one of its graduate fellowships; 25 selected to receive a Jefferson Fellowship and four selected to receive a National Fellowship. More information here: https://news.virginia.edu/content/jefferson-scholars-foundation-awards-f...
The Astronomy Department is pleased to announce that Amina Diop has been selected as the first John F. Angle Graduate Fellow in Astronomy. The Angle Fellowships are funded by a gift from Carol Angle and Fritz Angle. They honor Dr. John F. Angle MD (below), who is a nationally and internationally recognized leader in vascular and interventional radiology at UVa. He specializes in minimally invasive techniques to treat peripheral arterial disease, aortic aneurysm disease, venous insufficiency, venous thromboembolic disease, dialysis access maintenance, and cancerous tumors.
Amina Diop is entering UVa as a new Ph.D. graduate student this fall. She got her BA in Astrophysics & Arabic from Williams College, with a semester at the University College London. Amina is from Senegal, and has studied Entrepreneurship, Leadership, Math and Physics at the African Leadership Academy in Johannesburg, South Africa. Her research interests are astrochemistry and protoplanetary disks. For the last two years she has been working on an extensive research project, investigating the vertical structure of turbulence in the protoplanetary disk around the young star DM Tau. Amina modelled the emission from the molecular ion N2H+ coming from the disk. She won the Beth Brown Memorial Award for her poster on this subject at the National Society of Black Physicists’ annual meeting earlier this year. Nitya Kallivayalil, co-Chair of Graduate Admissions said, “I was really impressed with Amina’s poster at the conference, and upon chatting with her further, I found out that her true passion lies in radio astronomy, and that she wants to be a radio astronomer. I think she has made a wise decision, therefore, to come to UVa for graduate school, and we are thrilled that she chose us.” Amina also has extensive teaching and outreach experience and is interested in helping minority students both in the US and overseas.
Whitney Wills Richardson received a Hoos Building Bridges Award from President Ryan on April 7. She was cited as being “a selfless departmental citizen. … She is someone who volunteers to help with all types of department activities, proactively improves processes as needed, and makes space in the department for everyone. Furthermore, she actively builds bridges and keeps those bridges in good repair as a key member of the department's education and public outreach cadre, amplifying astronomy’s magical way of making science accessible to all ages in the community.” The UVAToday article on Whitney’s award is at
An international research group led by a postdoctoral fellow in the University of Virginia’s Department of Astronomy identified a rich organic chemistry in young disks surrounding 50 newly formed stars. Read more here.
APOGEE observations of the warp in the Milky Way done by Steve Majewski, Xinlun Cheng, and Borja Anguiano are feature in the Charlottesville newspaper: The Daily Progress. Read the article here: https://dailyprogress.com/news/watch-now-galactic-smack-may-have-caused-...
When the James Webb Space Telescope launches in October, it will be the world’s premier space science observatory. Its combination of high-resolution and infrared-detecting instruments is expected to provide astronomers with a wealth of detailed data – not only on individual stars in the local universe, but also an unprecedented level of detail of what’s happening at the cores of other galaxies. Continue reading here: https://news.virginia.edu/content/uva-astronomers-new-space-telescope-co...
Photo: UVA astronomers Aaron Evans, left, and Nitya Kallivayalil are working on two of the first research projects selected by NASA for the James Webb Space Telescope. (Contributed photo of Evans; photo of Kallivayalil by Dan Addison, University Communications)
Professor Kelsey Johnson has been elected to serve as president to the American Astronomical Society. Dr. Johnson is currently a Professor in the Department of Astronomy and Director of the UVA Echols Scholars Program. She is an award-winning teacher and advocate for public astronomy education whose research on galaxy evolution has earned a National Science Foundation CAREER Award and other prominent honors. Johnson also is the founding director of the award-winning “Dark Skies, Bright Kids” outreach program, which connects UVA astronomers, graduate students and volunteers to elementary schools in rural areas.
Read her Candidate Statement here: https://aas.org/candidate-statement-kelsey%20johnson
Result of 2021 AAS Election: https://aas.org/posts/news/2021/02/results-2021-aas-election
John Hawley, Hamilton and VITA Professor of Astronomy and Associate Dean for Academic Affairs in the College and Graduate School of Arts and Sciences, was recently named as a Fellow of the American Astronomical Society. John was cited “For pioneering work in computational astrophysics and its application to studies of accretion disks and jets.” More information here: https://aas.org/grants-and-prizes/aas-fellows
Professor Ilse Cleeves has recieved the Research Excellence Award by the University of Virginia Research Achievement Awards committee. Each year up to three researchers are selected across UVA for this honor through a nomination process and a rigorous review by a multi-disciplinary awards committee. This award recognizes faculty members who have generated sufficient volume of scholarship of high quality and are emerging in their fields as leaders and acknowledged as such by their peers. Chair Craig Sarazin says, "Ilse has won almost every award available in the world of Astronomy. It is not at all a surprise that U.Va. would recognize the quality of her research."
By monitoring the cosmos with a radio telescope array, an international team of scientists has detected radio bursts emanating from the constellation Boötes – that could be the first radio emission collected from a planet beyond our solar system.
The team, led by Cornell postdoctoral researcher Jake D. Turner, Philippe Zarka of the Observatoire de Paris - Paris Sciences et Lettres University and Jean-Mathias Griessmeier of the Université d’Orléans will publish their findings in the forthcoming research section of Astronomy & Astrophysics, on Dec. 16.
Nitya Kallivayalil’s research was featured in a Quanta magazine article entitled “The New History of the Milky Way”, which explores the outsize influence of the Large Magellanic Cloud on our own galaxy.
Image by Gilbert Vancell
Thanks to the generosity of an anonymous donor, in 2012 the Jefferson Scholars Foundation began recognizing University faculty who have demonstrated both excellence in teaching and exceeding care for their students. This award honors those teachers in our community who have gone the extra mile in fulfilling their vocation without regard for their own advancement. This year, Mark Whittle was nominated and has been designated as a 2020 recipient. Professor Whittle has been in the Astronomy department since 1986 and his research interests include active galaxies and cosmology.
Astronomy's Ilse Cleeves has won the prestigious Johnson & Johnson Women in STEM2D (WiSTEM2D) Scholars Award. The Johnson & Johnson program seeks to “fuel development of future female STEM2D leaders and feed the STEM2D talent pipeline by awarding and sponsoring women at critical points in their careers.” More than 540 nominees from around the world were considered for this year’s awards. The six winners are all assistant professors or senior lecturers at their respective universities and represent women leaders in the disciplines of science, technology, engineering, math, manufacturing and design. Cleeves was recognized as the only winner in the award’s “Science” division.
For more information, see the announcement from the UVA College of Arts and Sciences.
During the virtual Astronomy Department Diploma ceremony on 17 May, the winners of the Lawrence W. Fredrick award of the Astronomy department and the winners of three undergraduate Astronomy awards were announced.
Lawrence W. Fredrick Award
This award recognizes one or two outstanding astronomy graduate teaching assistants (TA) in the preceding year. The award is named for the Chair of the Astronomy Department in the 1960's and 1970's. This year's award goes jointly to Luca Beale and Daniel Lin. Luca was cited for his work as head TA, his role in the graduate mentoring of undergraduate majors and his work in organising the Bob Rood Graduate symposium. Daniel was cited by for his outstanding TA work, going above and beyond the call of duty in his efforts to help and educate undergraduate students. The award includes a monetary prize and a certificate.
The McCullough Scholarship Prize
This scholarship recognizes the outstanding academic and research work of a second-year undergraduate student in Astronomy or Astronomy-Physics. It is named for Dr. Timothy P. McCullough who who was a radio astronomer at the Naval Research Laboratory in Washington, DC. Dr. McCullough made some of the first radio measurements of many objects in the Solar System. The scholarship was established by his son, Gene McCullough, who is a U.Va. alumnus, graduating with a degree in Physics and
being in the first contingent of Echols Scholars at U.Va. As the scholarship was established only last summer(in 2019) after graduation, the winner of last year has not been yet announced publicly. So both last year and this year's winner are announced here. 2019's winner was Camryn Phillips. She did research with Prof Phil Arras on using the satellite Kepler data to look for tidal effects caused by planets on their stars. 2020's winner is James Staeben. He worked with Prof Craig Sarazin on analyzing Chandra X-ray observations of clusters of galaxies, shedding light on how they form by merging processes. The award includes a $1000 prize and a certificate.
The Vyssotsky Prize
The Vyssotsky Prize recognizes an outstanding third year undergraduate student in Astronomy or Astronomy-Physics. Professor Alexander Vyssotsky worked at McCormick Observatory for 35 years beginning in 1923. This year, the Vyssotsky Prize goes to Josef Zimmerman. Josef did research with Physics Prof Kent Yagi on the study of the properties of nuclear matter in neutron stars using gravitational wave and X-ray observations. The Vyssotsky Prize consists of a certificate and a $1,000 fund for professional travel during the student's 4th year, such as an observing trip, or a presentation at a conference.
D. Nelson Limber Award
The D. Nelson Limber Award recognizes outstanding accomplishments in course work and astrophysical research by a graduating undergraduate major or majors. The award is named for Nelson Limber, who was a professor in the Astronomy Department at the University of Virginia and a leading figure in the theoretical study of the interstellar medium and galaxy clustering. This year, the Limber Award goes jointly to Megan Kenny and Eric Rohr. Both have excelled in their research work. Megan studied the properties of the solar wind and of the corona of the sun using VLA observations with NRAO scientist Tim Bastian. She will do graduate work at the University of Colorado at Boulder. Eric did research work in a variety of fields: with Prof Mark Whittle on Hubble data on a star-forming dwarf galaxy, and with Prof Shane Davis using a magneto-hydrodynamic code studying accretion disks around black holes. Eric spent last summer at the university of Zurich, Switzerland working on simulations of galaxy evolution. He will do graduate work at the University of Heidelberg. The prize consists of a certificate and an award of $1000. Since this year it is shared, each recipient will receive $500.
Graduate student, Hannah Lewis, and Undergraduate student, Mary Brewer, are researching phenomena in our own Milky Way galaxy through a Double Hoo grant, which pairs an undergraduate student with a graduate student mentor to conduct research on a topic of their choice. Learn more about their research here: https://news.virginia.edu/content/watching-exoplanets-disintegrate-one-dust-particle-time?utm_source=DailyReport&utm_medium=email&utm_campaign=news
Congratulations to Thankful Cromartie who was awarded this year's Allan T. Gwathmey Memorial Award. This award comes from the UVa Graduate School of the College of Arts and Sciences for the best paper on a "fundamental problem in physical sciences" by a current graduate student or recent PhDs. It carries a cash award of $6,500 and is a great recognition of Thankful's work. Read the paper here: https://astronomycommunity.nature.com/users/291076-h-thankful-cromartie/...
The NASA Hubble Fellowship Program (NHFP) supports outstanding postdoctoral scientists to pursue independent research which contributes to NASA Astrophysics, using theory, observation, experimentation, or instrumental development. The NHFP preserves the legacy of NASA’s previous postdoctoral fellowship programs. Once selected, fellows are named to one of three sub-categories corresponding to NASA’s “big questions”: How Does the Universe Work? - Einstein Fellows; How Did We Get Here? - Hubble Fellows; Are We Alone? - Sagan Fellows.
Thankful Cromartie was born and raised in Chapel Hill, North Carolina, and received her BS with highest honors in physics from the University of North Carolina at Chapel Hill. She has pursued her PhD work as a graduate student in the University of Virginia's Department of Astronomy, where she currently works under the supervision of Dr. Scott Ransom as a National Radio Astronomy Observatory Grote Reber doctoral fellow. She will be defending her PhD in April 2020.
Thankful's research focuses on using millisecond pulsar (MSP) timing to explore fundamental physics. She is a member of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) collaboration, whose goal is to detect low-frequency gravitational waves from supermassive black hole binaries with an array of precisely timed MSPs. As a graduate student, she has explored topics under the NANOGrav umbrella, including the discovery of new MSPs for inclusion in the array using the Arecibo and Green Bank radio telescopes. Thankful has also worked on constraining the poorly understood neutron star interior equation of state using pulsar-timing observations of relativistic Shapiro delay. As an Einstein fellow at Cornell, she will continue to work within NANOGrav, pursuing ambitious searches for MSPs and using the full extent of the NANOGrav dataset to further constrain the equation of state. She looks forward to conducting joint analyses of radio and Gamma/X-ray data to improve NANOGrav's sensitivity and further understand the behavior of matter at supranuclear densities.
The AAS Fellows program was established in 2019 to confer recognition upon AAS members for achievement and extraordinary service to the field of astronomy and the American Astronomical Society. AAS Fellows are recognized for their contributions toward the AAS mission of enhancing and sharing humanity's scientific understanding of the universe. Roger Chevalier was recently selected as an American Astronomical Society Legacy Fellow. Learn more here: https://aas.org/press/aas-announces-first-class-aas-fellows
South Africa's MeerKAT peers deep into the Universe - UVA Grad Student Allison Matthews continues to work on this project to learn more about star formation. Learn more about her work here: http://www.spacedaily.com/reports/South_Africas_MeerKAT_peers_deep_into_...
A group of astronomers, including U.Va.'s Craig Sarazin, have observed two groups of galaxies slamming into one another at a speed of about 4 million miles per hour. The colliding groups will eventually merge and form a single cluster of galaxies; these are the largest objects in the Universe. Clusters contain as much material as one million, billion stars. This cosmic train wreck was observed with a number of space and ground-based observatories, including by U.Va. astronomers using the Apache Point Observatory (APO) in New Mexico. U.Va. is a member of APO. The picture above shows a composite of the X-ray and optical images of the merging groups. These observations were the subject of an image press release by NASA's Chandra X-ray Observatory, which contains much more information and many more images. There is also a video about this collision on YouTube at https://youtu.be/PVFkc46CyYY.
Astronomy Professor Kelsey Johnson recently gave a TED Talk on Light Pollution and 5 ridiculously easy was to fix it! You can watch her talk at Kelsey Johnson TED Talk.
Astronomy Professor Ilse Cleeves was awarded a Packard Fellowship for Science and Engineering to support her research on astrochemistry and the formation of planets. The award was announced by the David and Lucile Packard Foundation on Tuesday, October 15. These Fellowships are among the most prestigious and selective in American science. Previous Fellows include scientists who went on to be awarded Nobel Prizes in Chemistry and Physics, the Fields Medal in Mathematics, the Alan T. Waterman Award, MacArthur Fellowships, and election to the National Academies. The Fellowship provides $875,000 of support over five years.
You can learn more about Professor Cleeves' research in this UVA Today article.
Follow this link for more information about the 2019 Packard Fellows
UVa Astronomy graduate student Thankful Cromartie led a paper published in Nature Astronomy detailing the discovery of the most massive neutron star ever observed. This work was conducted along with her advisor Scott Ransom (of UVa and the National Radio Astronomy Observatory) and the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) collaboration. The team used pulsar timing — accounting for every rotation of dense, rapidly rotating stellar remnants — to measure the mass of J0740+6620, a 2.89-ms pulsar with a binary white dwarf companion. This work is significant because the way matter behaves (the "equation of state") deep inside the supranuclear-density interiors of neutron stars is very poorly understood. Each formulation of the equation of state dictates the mass at which the star should collapse; therefore, finding more and more massive neutron stars helps put constraints on the equation of state and improves our understanding of nuclear physics and stellar evolution. The work was covered by CNN, ABC News, USA Today, Gizmodo, Forbes, and other news sources. A summary she wrote of the paper (with a link to the original) can be found here: https://go.nature.com/307tCUg. The NRAO press release can be found here: https://eurekalert.org/pub_releases/2019-09/gbo-mmn091319.php
A group of astronomers, including Craig Sarazin from U.Va., have made the first high-resolution, high-frequency radio map of the Moon. The image, at a radio frequency of 90 GHz, was made with the MUSTANG2 camera on the Green Bank Telescope, the world’s largest steerable telescope. At this radio frequency, the image shows heat radiation form the lunar surface, and brighter regions are hotter. The image shows many of the same features as seen in more familiar optical images. However, because temperature variations across the lunar surface are smaller than the variations in the amount of reflected sunlight, the image has less contrast than an optical image. Also, the optically dark portion of the Moon in optical light is still visible in the radio, as the surface is still warm.
For more images and information, see the press release by the Green Bank Observatory at https://greenbankobservatory.org/gbt-snaps-hot-photos-of-the-moon/
Below: Radio image of the Moon at 90m GHz made with the MUSTANG2 camera on the Green Bank Telescope. Above: Optical image at the same phase.
While our solar system contains dozens of moons orbiting the planets, there is as yet no clear detection of a moon orbiting an extrasolar planet. A group of astronomers and planetary scientists, led by former UVa graduate student Apurva Oza, have a new paper accepted to the Astrophysical Journal (http://arxiv.org/abs/1908.10732) which shows that these exo-moons may have been hiding in plain sight. Absorption of starlight as it passes by the planet has often been assumed to be due to atoms in the planet’s atmosphere. Oza et al.’s idea is that there may be a volcanic “exo-Io” orbiting the exo-planet which is venting atoms to space which then absorb the starlight. This problem is how these moons may survive the harsh environment near the star. Their calculations find that a handful of known exo-planet systems may be explained by volcanic exo-Io’s. This collaboration was begun in Charlottesville and included a number of current and former UVa/richNRAO people: Oza, Bob Johnson, Carl Schmidt, Chenliang Huang and Arielle Moullet. The paper has recently been discussed in the press at http://www.spacedaily.com/reports/Hints_of_a_volcanically_active_exomoon_999.html.