Research
Virtual Visit Request info Apply
MENUMENU
  • Office of the Vice President
    • Vision and Mission
    • RCA Awards
    • Staff Directory
  • Office of Sponsored Projects
  • Funding
    • Overview
    • TRIF
  • Safety & Compliance
    • Overview
    • Environmental Health and Safety
    • Animal Care
    • Human Research Protection Program
    • Research Integrity
    • Export Control
    • NAUS Culture of Safety
    • Policies
  • NAU Innovations
  • About
    • Services and Facilities
  • Research News
  • Events
  • NAU
  • Research
  • News about research and scholarly activities

NAU planetary astronomer receives NASA grants for two new studies of Main Asteroid Belt

Posted by Heather Tate on September 2, 2020

Cristina Thomas sitting as a computer The majority of asteroids in our solar system are found in the Main Asteroid Belt, which is located between the orbits of Mars and Jupiter. Although millions of objects populate the belt, most are relatively small, and astronomers have not actually studied many of them in detail.

NAU assistant professor Cristina Thomas, whose research focuses on asteroids, recently received two grants from NASA to study two different types of asteroids in the Main Asteroid Belt. The results of her studies will add to the existing body of knowledge in this field, helping scientists better understand the origins of asteroids.

$100,000 grant to study ‘space weathering’ of small Koronis asteroids

Thomas, who was selected as a NASA Early Career Fellow in 2014, recently received $100,000 in funding through the fellowship program for a pilot study of small asteroids in the Koronis family, a large family of stony asteroids thought to have been formed at least two billion years ago in a catastrophic collision between two precursor asteroids. Thomas will obtain observations of small Koronis family members using the NASA Infrared Telescope Facility (IRTF) to determine whether they have the same spectral characteristics as the largest family members.

“Past capabilities have limited our spectral observations to the largest objects in the Main Belt, so this is something that very few have done. Specifically,” said Thomas, “I’m looking for signs of space weathering, which is the result of an object being exposed to the space environment over time. Space weathering is a long-standing question in asteroid science that affects spectroscopic interpretations of near-Earth and Main Belt asteroids.”

“We haven’t done a lot of work on small objects in the Main Belt and I have done some work on the Koronis family in the past, so it seemed like a good place to start. I’m excited it’s been selected!”

In a previous study of the Koronis family of asteroids, Thomas examined changes in spectral slope within the family that are indicative of space weathering. Her findings implied that unweathered objects exist in the family.

$331,000 grant to understand Trojan-like asteroids

Thomas was also recently awarded a $331,000 grant by NASA for a three-year project to find asteroids with spectra similar to the Jupiter Trojans in the Main Asteroid Belt. Graduate student Oriel Humes is working on the project with Thomas.

“The Trojan asteroids have very specific spectral slopes in visible and near-infrared wavelengths,” Thomas said. “I used results from the Sloan Digital Sky Survey, which observed a lot of objects but has very limited data, to identify these Trojan-like candidates in the Main Belt. The work will tell us about the delivery of material to the Main Belt from the outer solar system when the planets were migrating and the Trojan population was captured in their orbits near Jupiter.”

 


NAU logo

Kerry Bennett
Office of the Vice President for Research
(928) 523-5556 | kerry.bennett@nau.edu

 

Filed Under: College of the Environment, Forestry, and Natural Sciences, Department of Astronomy and Planetary Science

Categories

Tags

Alaska Arctic Arizona Arizona State University astronomy atmosphere bacteria Ben Ruddell Bruce Hungate carbon Christopher Edwards climate change coronavirus COVID-19 COVID-19 research data David Trilling DNA ecology ecosystem ecosystems environment Greg Caporaso Julie Baldwin Kevin Gurney Mars Michelle Mack microbes NASA National Institutes of Health National Science Foundation Navajo Nation Northern Arizona University pandemic Pathogen and Microbiome Institute Paul Keim public health research scientists Scott Goetz soil solar system STEM Ted Schuur TGen

Archives

Boundless Impact
Location
Room - 4th floor, Building 20
Science Annex
525 S Beaver Street
Flagstaff, AZ 86011-4087
Mailing Address
PO Box 4087
Flagstaff, AZ 86011-4087
Contact Form
Email
ovpr@nau.edu
Phone
928-523-4340
Social Media
Visit us on Twitter Facebook LinkedIn