The Atacama Cosmology Telescope: Millimeter Observations of a Population of Asteroids or: ACTeroids

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dc.contributor.authorOrlowski-Scherer, John
dc.contributor.authorVenterea, Ricco C.
dc.contributor.authorBattaglia, Nicholas
dc.contributor.authorNaess, Sigurd
dc.contributor.authorBhandarkar, Tanay
dc.contributor.authorBiermann, Emily
dc.contributor.authorCalabrese, Erminia
dc.contributor.authorDevlin, Mark
dc.contributor.authorDunkley, Jo
dc.contributor.authorHervias-Caimapo, Carlos
dc.contributor.authorGallardo, Patricio A.
dc.contributor.authorHilton, Matt
dc.contributor.authorHincks, Adam D.
dc.contributor.authorKnowles, Kenda
dc.contributor.authorLi, Yaqiong
dc.contributor.authorMcmahon, Jeffrey J.
dc.contributor.authorNiemack, Michael D.
dc.contributor.authorPage, Lyman A.
dc.contributor.authorPartridge, Bruce
dc.contributor.authorSalatino, Maria
dc.contributor.authorSievers, Jonathan
dc.contributor.authorSifon, Cristobal
dc.contributor.authorStaggs, Suzanne
dc.contributor.authorvan Engelen, Alexander
dc.contributor.authorVargas, Cristian
dc.contributor.authorVavagiakis, Eve M.
dc.contributor.authorWollack, Edward J.
dc.date.accessioned2025-01-20T17:06:32Z
dc.date.available2025-01-20T17:06:32Z
dc.date.issued2024
dc.description.abstractWe present fluxes and light curves for a population of asteroids at millimeter 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, as well as for studying transients. We detect 170 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 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.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/ad21fe
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/ad21fe
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90800
dc.identifier.wosidWOS:001196530200001
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.titleThe Atacama Cosmology Telescope: Millimeter Observations of a Population of Asteroids or: ACTeroids
dc.typeartículo
dc.volumen964
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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