JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) Ryugu
The new Polana collisional family is the hypothesized origin of the near-Earth asteroids (101955) Bennu, which was the target of the NASA OSIRIS-REx mission, and (162173) Ryugu, which was the target of the JAXA Hayabusa2 mission. We present JWST Near Infrared Spectrograph and Mid-Infrared Instrument...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Planetary Science Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/PSJ/ade395 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849233812385431552 |
|---|---|
| author | Anicia Arredondo Tracy M. Becker Maggie M. McAdam Andrew S. Rivkin Stephanie Jarmak Ian Wong |
| author_facet | Anicia Arredondo Tracy M. Becker Maggie M. McAdam Andrew S. Rivkin Stephanie Jarmak Ian Wong |
| author_sort | Anicia Arredondo |
| collection | DOAJ |
| description | The new Polana collisional family is the hypothesized origin of the near-Earth asteroids (101955) Bennu, which was the target of the NASA OSIRIS-REx mission, and (162173) Ryugu, which was the target of the JAXA Hayabusa2 mission. We present JWST Near Infrared Spectrograph and Mid-Infrared Instrument spectroscopy of the parent body of the family, (142) Polana, and compare it with spacecraft and laboratory data of both near-Earth asteroids. We find that the near-infrared spectrum of Polana is similar to that of the returned sample from both Bennu and Ryugu but has a slope that differs from that of the global average spectra taken by both spacecraft. The mid-infrared Polana spectrum differs in shape from the global average spectrum of Bennu, possibly because of porosity, space weathering, or grain size. Spectral features at similar wavelengths in the spectra of Polana and those of Bennu and Ryugu support the hypothesis that both asteroids originated in the Polana family. |
| format | Article |
| id | doaj-art-e1dec0e5d4b74f8d818fbf18f981be90 |
| institution | Kabale University |
| issn | 2632-3338 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Planetary Science Journal |
| spelling | doaj-art-e1dec0e5d4b74f8d818fbf18f981be902025-08-20T04:03:22ZengIOP PublishingThe Planetary Science Journal2632-33382025-01-016819510.3847/PSJ/ade395JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) RyuguAnicia Arredondo0https://orcid.org/0000-0002-1706-6255Tracy M. Becker1https://orcid.org/0000-0002-1559-5954Maggie M. McAdam2https://orcid.org/0000-0003-3356-1368Andrew S. Rivkin3https://orcid.org/0000-0002-9939-9976Stephanie Jarmak4https://orcid.org/0000-0002-6982-7191Ian Wong5https://orcid.org/0000-0001-9665-8429Southwest Research Institute , San Antonio, TX 78238, USA ; aarredondo@swri.orgSouthwest Research Institute , San Antonio, TX 78238, USA ; aarredondo@swri.orgNASA Ames Research Center , Moffat Field, CA 94035, USAJohns Hopkins University , Applied Physics Laboratory, Laurel, MD 20146, USAHarvard Smithsonian Center for Astrophysics , Cambridge, MA 02138, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USAThe new Polana collisional family is the hypothesized origin of the near-Earth asteroids (101955) Bennu, which was the target of the NASA OSIRIS-REx mission, and (162173) Ryugu, which was the target of the JAXA Hayabusa2 mission. We present JWST Near Infrared Spectrograph and Mid-Infrared Instrument spectroscopy of the parent body of the family, (142) Polana, and compare it with spacecraft and laboratory data of both near-Earth asteroids. We find that the near-infrared spectrum of Polana is similar to that of the returned sample from both Bennu and Ryugu but has a slope that differs from that of the global average spectra taken by both spacecraft. The mid-infrared Polana spectrum differs in shape from the global average spectrum of Bennu, possibly because of porosity, space weathering, or grain size. Spectral features at similar wavelengths in the spectra of Polana and those of Bennu and Ryugu support the hypothesis that both asteroids originated in the Polana family.https://doi.org/10.3847/PSJ/ade395AsteroidsMain belt asteroidsInfrared spectroscopy |
| spellingShingle | Anicia Arredondo Tracy M. Becker Maggie M. McAdam Andrew S. Rivkin Stephanie Jarmak Ian Wong JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) Ryugu The Planetary Science Journal Asteroids Main belt asteroids Infrared spectroscopy |
| title | JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) Ryugu |
| title_full | JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) Ryugu |
| title_fullStr | JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) Ryugu |
| title_full_unstemmed | JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) Ryugu |
| title_short | JWST Spectroscopy of (142) Polana: Connection to NEAs (101955) Bennu and (162173) Ryugu |
| title_sort | jwst spectroscopy of 142 polana connection to neas 101955 bennu and 162173 ryugu |
| topic | Asteroids Main belt asteroids Infrared spectroscopy |
| url | https://doi.org/10.3847/PSJ/ade395 |
| work_keys_str_mv | AT aniciaarredondo jwstspectroscopyof142polanaconnectiontoneas101955bennuand162173ryugu AT tracymbecker jwstspectroscopyof142polanaconnectiontoneas101955bennuand162173ryugu AT maggiemmcadam jwstspectroscopyof142polanaconnectiontoneas101955bennuand162173ryugu AT andrewsrivkin jwstspectroscopyof142polanaconnectiontoneas101955bennuand162173ryugu AT stephaniejarmak jwstspectroscopyof142polanaconnectiontoneas101955bennuand162173ryugu AT ianwong jwstspectroscopyof142polanaconnectiontoneas101955bennuand162173ryugu |