Temperature, Albedo, and Emissivity of Triton and Proteus from Voyager 2 IRIS Data
The Voyager 2 infrared interferometer and spectrometer (IRIS) spectra for Triton are revisited, and the Proteus IRIS spectra are looked at for the first time. Fifty more spectra are added to the average of 16 previously used for Triton. The unit emissivity Planck function temperature result is 37.9...
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IOP Publishing
2025-01-01
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| Series: | The Planetary Science Journal |
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| Online Access: | https://doi.org/10.3847/PSJ/add69c |
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| author | Garrett Nobis Vincent Chevrier |
| author_facet | Garrett Nobis Vincent Chevrier |
| author_sort | Garrett Nobis |
| collection | DOAJ |
| description | The Voyager 2 infrared interferometer and spectrometer (IRIS) spectra for Triton are revisited, and the Proteus IRIS spectra are looked at for the first time. Fifty more spectra are added to the average of 16 previously used for Triton. The unit emissivity Planck function temperature result is 37.9 ± 0.5 K. Iterating IRIS temperatures over several emissivities allows for constraints on emissivity and Bond albedo based on past data. Upper and lower bounds on Triton’s temperature and albedo of 37.9 ± 0.5 to 46.1 ± 0.7 K for temperature and 0.67−0.86 for albedo are determined from the IRIS data and previous albedo results. For Proteus, the surface temperature is found to be 47.4 ± 0.7 K, along with an emissivity from ∼0.75 to 1 and Bond albedo between 0.2 and 0.3. |
| format | Article |
| id | doaj-art-da00a04b96d3463dac4eb085db249135 |
| institution | OA Journals |
| issn | 2632-3338 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Planetary Science Journal |
| spelling | doaj-art-da00a04b96d3463dac4eb085db2491352025-08-20T02:02:15ZengIOP PublishingThe Planetary Science Journal2632-33382025-01-016613210.3847/PSJ/add69cTemperature, Albedo, and Emissivity of Triton and Proteus from Voyager 2 IRIS DataGarrett Nobis0https://orcid.org/0009-0006-8490-8017Vincent Chevrier1https://orcid.org/0000-0002-1111-587XArkansas Center for Space and Planetary Sciences, University of Arkansas , USAArkansas Center for Space and Planetary Sciences, University of Arkansas , USA; Department of Geosciences, University of Arkansas , USAThe Voyager 2 infrared interferometer and spectrometer (IRIS) spectra for Triton are revisited, and the Proteus IRIS spectra are looked at for the first time. Fifty more spectra are added to the average of 16 previously used for Triton. The unit emissivity Planck function temperature result is 37.9 ± 0.5 K. Iterating IRIS temperatures over several emissivities allows for constraints on emissivity and Bond albedo based on past data. Upper and lower bounds on Triton’s temperature and albedo of 37.9 ± 0.5 to 46.1 ± 0.7 K for temperature and 0.67−0.86 for albedo are determined from the IRIS data and previous albedo results. For Proteus, the surface temperature is found to be 47.4 ± 0.7 K, along with an emissivity from ∼0.75 to 1 and Bond albedo between 0.2 and 0.3.https://doi.org/10.3847/PSJ/add69cTritonNeptunian satellitesFar infrared interferometrySmall Solar System bodies |
| spellingShingle | Garrett Nobis Vincent Chevrier Temperature, Albedo, and Emissivity of Triton and Proteus from Voyager 2 IRIS Data The Planetary Science Journal Triton Neptunian satellites Far infrared interferometry Small Solar System bodies |
| title | Temperature, Albedo, and Emissivity of Triton and Proteus from Voyager 2 IRIS Data |
| title_full | Temperature, Albedo, and Emissivity of Triton and Proteus from Voyager 2 IRIS Data |
| title_fullStr | Temperature, Albedo, and Emissivity of Triton and Proteus from Voyager 2 IRIS Data |
| title_full_unstemmed | Temperature, Albedo, and Emissivity of Triton and Proteus from Voyager 2 IRIS Data |
| title_short | Temperature, Albedo, and Emissivity of Triton and Proteus from Voyager 2 IRIS Data |
| title_sort | temperature albedo and emissivity of triton and proteus from voyager 2 iris data |
| topic | Triton Neptunian satellites Far infrared interferometry Small Solar System bodies |
| url | https://doi.org/10.3847/PSJ/add69c |
| work_keys_str_mv | AT garrettnobis temperaturealbedoandemissivityoftritonandproteusfromvoyager2irisdata AT vincentchevrier temperaturealbedoandemissivityoftritonandproteusfromvoyager2irisdata |