Publicación:
Asteroid phase curves from ATLAS dual-band photometry

dc.contributor.authorMahlke, M.
dc.contributor.authorCarry, B.
dc.contributor.authorDenneau, L.
dc.contributor.funderNational Aeronautics and Space Administration (NASA)
dc.contributor.funderAgencia Estatal de Investigación (AEI)
dc.contributor.orcidMahlke, M. [0000-0003-2831-0513]
dc.date.accessioned2022-03-17T08:05:48Z
dc.date.available2022-03-17T08:05:48Z
dc.date.issued2020-09-19
dc.descriptionHighlights: The fundamental absolute magnitudes of asteroids are derived from phase curves. Catalogue of phase coefficients derived from ATLAS photometry for 95,000 asteroids. Non-targeted phase curves of minor bodies indicate taxonomic composition. Dual-band ATLAS observations show wavelength-dependency of phase coefficients. Surveys (LSST, NEOSM) must observe at opposition for absolute magnitudes and colours.es
dc.description.abstractAsteroid phase curves are used to derive fundamental physical properties through the determination of the absolute magnitude H. The upcoming visible Legacy Survey of Space and Time (LSST) and mid-infrared Near-Earth Object Surveillance Mission (NEOSM) surveys rely on these absolute magnitudes to derive the colours and albedos of millions of asteroids. Furthermore, the shape of the phase curves reflects their surface compositions, allowing for conclusions on their taxonomy. We derive asteroid phase curves from dual-band photometry acquired by the Asteroid Terrestrial-impact Last Alert System telescopes. Using Bayesian parameter inference, we retrieve the absolute magnitudes and slope parameters of 127,012 phase curves of 94,777 asteroids in the photometric H, G1, G2- and H, G12∗-systems. The taxonomic complexes of asteroids separate in the observed G1, G2-distributions, correlating with their mean visual albedo. This allows for differentiating the X-complex into the P-, M-, and E-complexes using the slope parameters as alternative to albedo measurements. Further, taxonomic misclassifications from spectrophotometric datasets as well as interlopers in dynamical families of asteroids reveal themselves in G1, G2-space. The H, G12∗-model applied to the serendipitous observations is unable to resolve target taxonomy. The G1, G2 phase coefficients show wavelength-dependency for the majority of taxonomic complexes. Their values allow for estimating the degree of phase reddening of the spectral slope. The uncertainty of the phase coefficients and the derived absolute magnitude is dominated by the observational coverage of the opposition effect rather than the magnitude dispersion induced by the asteroids' irregular shapes and orientations. Serendipitous asteroid observations allow for reliable phase curve determination for a large number of asteroids. To ensure that the acquired absolute magnitudes are suited for colour computations, it is imperative that future surveys densely cover the opposition effects of the phase curves, minimizing the uncertainty on H. The phase curve slope parameters offer an accessible dimension for taxonomic classification, correlating with the albedo and complimentary to the spectral dimension.es
dc.description.peerreviewedPeerreviewes
dc.description.sponsorshipThis work has made use of data from the Asteroid Terrestrial-impact Last Alert System (ATLAS) project. ATLAS is primarily funded to search for near earth asteroids through NASA grants NN12AR55G, 80NSSC18K0284, and 80NSSC18K1575; byproducts of the NEO search include images and catalogues from the survey area. The ATLAS science products have been made possible through the contributions of the University of Hawaii Institute for Astronomy, the Queen's University Belfast, the Space Telescope Science Institute, and the South African Astronomical Observatory. This research has made use of IMCCE's Miriade VO tool. This research has made use of the SVO Filter Profile Service supported from the Spanish MINECO through grant AYA2017-84089.es
dc.identifier.citationIcarus 354: 114094(2021)es
dc.identifier.doi10.1016/j.icarus.2020.114094
dc.identifier.e-issn1090-2643
dc.identifier.funderhttp://dx.doi.org/10.13039/100000104
dc.identifier.funderhttp://dx.doi.org/10.13039/501100011033
dc.identifier.issn0019-1035
dc.identifier.otherhttps://www.sciencedirect.com/science/article/pii/S0019103520304401
dc.identifier.urihttp://hdl.handle.net/20.500.12666/679
dc.language.isoenges
dc.publisherElsevier BVes
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-84089-P/ES/EL OBSERVATORIO VIRTUAL ESPAÑOL. EXPLOTACION CIENTIFICO-TECNICA DE ARCHIVOS ASTRONOMICOS/
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationales
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.license© 2020 The Authors. Published by Elsevier Inc.es
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAsteroidses
dc.subjectCompositiones
dc.subjectSurfaceses
dc.subjectPhotometryes
dc.titleAsteroid phase curves from ATLAS dual-band photometryes
dc.typeinfo:eu-repo/semantics/articlees
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication

Archivos

Bloque original

Mostrando 1 - 1 de 1
Cargando...
Miniatura
Nombre:
Asteroid ohase curves from ATLAS dual band photometry.pdf
Tamaño:
12.16 MB
Formato:
Adobe Portable Document Format
Descripción:

Bloque de licencias

Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
4.82 KB
Formato:
Item-specific license agreed upon to submission
Descripción:

Colecciones