Upper Limits to the Proper Motions of JuMBO 24, a Jupiter-mass Binary Object Candidate in Orion
Using JWST near-infrared data of the inner Orion Nebula, S. G. Pearson & M. J. McCaughrean detected 40 binary systems they proposed to be Jupiter-mass binary objects (JuMBOs)—although their actual nature is still in debate. Only one of the objects, JuMBO 24, was detected in the radio continuum....
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/adceaa |
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| author | Luis F. Rodríguez Laurent Loinard Luis A. Zapata Gisela N. Ortiz-León |
| author_facet | Luis F. Rodríguez Laurent Loinard Luis A. Zapata Gisela N. Ortiz-León |
| author_sort | Luis F. Rodríguez |
| collection | DOAJ |
| description | Using JWST near-infrared data of the inner Orion Nebula, S. G. Pearson & M. J. McCaughrean detected 40 binary systems they proposed to be Jupiter-mass binary objects (JuMBOs)—although their actual nature is still in debate. Only one of the objects, JuMBO 24, was detected in the radio continuum. Here, we report on new radio continuum (10 GHz) Karl G. Jansky Very Large Array (VLA) detections of the radio counterpart to JuMBO 24, and on an unsuccessful search for 5 GHz continuum emission with the High Sensitivity Array (HSA). From our new VLA detections and adopting a distance to the region, we set an upper limit of ≃6 km s ^−1 to the velocity of the radio source in the plane of the sky. This upper limit favors an origin for this source similar to that of stars, that is, from a stationary contracting core. The nature of the radio emission remains uncertain, but the lack of strong variability (all VLA observations are consistent with a steady flux of ∼50 μ Jy), of detection on long HSA baselines, and of detectable circular polarization in VLA data do not favor a nonthermal origin. |
| format | Article |
| id | doaj-art-96ca272373a94898b5cccb3d28e498ac |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal |
| spelling | doaj-art-96ca272373a94898b5cccb3d28e498ac2025-08-20T03:53:07ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01984216610.3847/1538-4357/adceaaUpper Limits to the Proper Motions of JuMBO 24, a Jupiter-mass Binary Object Candidate in OrionLuis F. Rodríguez0https://orcid.org/0000-0003-2737-5681Laurent Loinard1https://orcid.org/0000-0002-5635-3345Luis A. Zapata2https://orcid.org/0000-0003-2343-7937Gisela N. Ortiz-León3https://orcid.org/0000-0002-2863-676XInstituto de Radioastronomía yAstrofísica, Universidad Nacional Autónoma de México , Apartado Postal 3–72, 58090 Morelia, Michoacán, Mexico; Mesoamerican Center for Theoretical Physics, Universidad Autónoma de Chiapas , Carretera Emiliano Zapata Km 4, 29050 Tuxtla Gutiérrez, Chiapas, MexicoInstituto de Radioastronomía yAstrofísica, Universidad Nacional Autónoma de México , Apartado Postal 3–72, 58090 Morelia, Michoacán, Mexico; Black Hole Initiative at Harvard University , 20 Garden Street, Cambridge, MA 02138, USA; David Rockefeller Center for Latin American Studies, Harvard University , 1730 Cambridge Street, Cambridge, MA 02138, USAInstituto de Radioastronomía yAstrofísica, Universidad Nacional Autónoma de México , Apartado Postal 3–72, 58090 Morelia, Michoacán, MexicoInstituto Nacional de Astrofísica , Óptica y Electrónica, Apartado Postal 51 y 216, 72000 Puebla, MexicoUsing JWST near-infrared data of the inner Orion Nebula, S. G. Pearson & M. J. McCaughrean detected 40 binary systems they proposed to be Jupiter-mass binary objects (JuMBOs)—although their actual nature is still in debate. Only one of the objects, JuMBO 24, was detected in the radio continuum. Here, we report on new radio continuum (10 GHz) Karl G. Jansky Very Large Array (VLA) detections of the radio counterpart to JuMBO 24, and on an unsuccessful search for 5 GHz continuum emission with the High Sensitivity Array (HSA). From our new VLA detections and adopting a distance to the region, we set an upper limit of ≃6 km s ^−1 to the velocity of the radio source in the plane of the sky. This upper limit favors an origin for this source similar to that of stars, that is, from a stationary contracting core. The nature of the radio emission remains uncertain, but the lack of strong variability (all VLA observations are consistent with a steady flux of ∼50 μ Jy), of detection on long HSA baselines, and of detectable circular polarization in VLA data do not favor a nonthermal origin.https://doi.org/10.3847/1538-4357/adceaaExoplanets |
| spellingShingle | Luis F. Rodríguez Laurent Loinard Luis A. Zapata Gisela N. Ortiz-León Upper Limits to the Proper Motions of JuMBO 24, a Jupiter-mass Binary Object Candidate in Orion The Astrophysical Journal Exoplanets |
| title | Upper Limits to the Proper Motions of JuMBO 24, a Jupiter-mass Binary Object Candidate in Orion |
| title_full | Upper Limits to the Proper Motions of JuMBO 24, a Jupiter-mass Binary Object Candidate in Orion |
| title_fullStr | Upper Limits to the Proper Motions of JuMBO 24, a Jupiter-mass Binary Object Candidate in Orion |
| title_full_unstemmed | Upper Limits to the Proper Motions of JuMBO 24, a Jupiter-mass Binary Object Candidate in Orion |
| title_short | Upper Limits to the Proper Motions of JuMBO 24, a Jupiter-mass Binary Object Candidate in Orion |
| title_sort | upper limits to the proper motions of jumbo 24 a jupiter mass binary object candidate in orion |
| topic | Exoplanets |
| url | https://doi.org/10.3847/1538-4357/adceaa |
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