The Atacama Cosmology Telescope: Millimeter Observations of a Population of Asteroids or: ACTeroids
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| author | Orlowski-Scherer, John Venterea, Ricco Battaglia, Nicholas Naess, Sigurd Bhandarkar, Tanay Biermann, Emily Calabrese, Erminia Devlin, Mark Dunkley, Jo Hervias-Caimapo, Carlos Gallardo, Patricio A. Hilton, Matt Hincks, Adam D. Knowles, Kenda Li, Yaqiong McMahon, Jefferey J. Niemack, Michael D. Page, Lyman A. Partridge, Bruce Salatino, Maria Sievers, Jonathan Sifon, Cristobal Staggs, Suzanne Van Engelen, Alexander Vargas, Cristian Vavagiakis, Eve M. Wollack, Edward J. |
| author_facet | Orlowski-Scherer, John Venterea, Ricco Battaglia, Nicholas Naess, Sigurd Bhandarkar, Tanay Biermann, Emily Calabrese, Erminia Devlin, Mark Dunkley, Jo Hervias-Caimapo, Carlos Gallardo, Patricio A. Hilton, Matt Hincks, Adam D. Knowles, Kenda Li, Yaqiong McMahon, Jefferey J. Niemack, Michael D. Page, Lyman A. Partridge, Bruce Salatino, Maria Sievers, Jonathan Sifon, Cristobal Staggs, Suzanne Van Engelen, Alexander Vargas, Cristian Vavagiakis, Eve M. Wollack, Edward J. |
| contents | We present fluxes and light curves for a population of asteroids at millimeter (mm) wavelengths, detected by the Atacama Cosmology Telescope (ACT) over 18, 000 deg2 of the sky using data from 2017 to 2021. We utilize high cadence maps, which can be used in searching for moving objects such as asteroids and trans-Neptunian Objects (TNOs), as well as for studying transients. We detect 160 asteroids with a signal-to-noise of at least 5 in at least one of the ACT observing bands, which are centered near 90, 150, and 220 GHz. For each asteroid, we compare the ACT measured flux to predicted fluxes from the Near Earth Asteroid Thermal Model (NEATM) fit to WISE data. We confirm previous results that detected a deficit of flux at millimeter wavelengths. Moreover, we report a spectral characteristic to this deficit, such that the flux is relatively lower at 150 and 220 GHz than at 90 GHz. Additionally, we find that the deficit in flux is greater for S-type asteroids than for C-type. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_05468 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | The Atacama Cosmology Telescope: Millimeter Observations of a Population of Asteroids or: ACTeroids Orlowski-Scherer, John Venterea, Ricco Battaglia, Nicholas Naess, Sigurd Bhandarkar, Tanay Biermann, Emily Calabrese, Erminia Devlin, Mark Dunkley, Jo Hervias-Caimapo, Carlos Gallardo, Patricio A. Hilton, Matt Hincks, Adam D. Knowles, Kenda Li, Yaqiong McMahon, Jefferey J. Niemack, Michael D. Page, Lyman A. Partridge, Bruce Salatino, Maria Sievers, Jonathan Sifon, Cristobal Staggs, Suzanne Van Engelen, Alexander Vargas, Cristian Vavagiakis, Eve M. Wollack, Edward J. Earth and Planetary Astrophysics We present fluxes and light curves for a population of asteroids at millimeter (mm) wavelengths, detected by the Atacama Cosmology Telescope (ACT) over 18, 000 deg2 of the sky using data from 2017 to 2021. We utilize high cadence maps, which can be used in searching for moving objects such as asteroids and trans-Neptunian Objects (TNOs), as well as for studying transients. We detect 160 asteroids with a signal-to-noise of at least 5 in at least one of the ACT observing bands, which are centered near 90, 150, and 220 GHz. For each asteroid, we compare the ACT measured flux to predicted fluxes from the Near Earth Asteroid Thermal Model (NEATM) fit to WISE data. We confirm previous results that detected a deficit of flux at millimeter wavelengths. Moreover, we report a spectral characteristic to this deficit, such that the flux is relatively lower at 150 and 220 GHz than at 90 GHz. Additionally, we find that the deficit in flux is greater for S-type asteroids than for C-type. |
| title | The Atacama Cosmology Telescope: Millimeter Observations of a Population of Asteroids or: ACTeroids |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2306.05468 |