Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/24799
Titolo: | The Dawn exploration of (4) Vesta as the "ground truth" to interpret asteroid polarimetry | Autori: | CELLINO, Alberto Ammannito, E. Magni, G. Gil-Hutton, R. Tedesco, E. F. Belskaya, I. N. DE SANCTIS, MARIA CRISTINA Schröder, S. Preusker, F. Manara, A. |
Data pubblicazione: | 2016 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 456 | Fascicolo: | 1 | Da pagina:: | 248 | Abstract: | The results of the in situ exploration of the asteroid (4) Vesta by the Dawn spacecraft open new perspectives in the field of interpretation of remote-sensing polarimetric measurements of asteroids. (4) Vesta has long been known to be the only asteroid exhibiting a cyclic variation of the degree of linear polarization of the sunlight scattered by its surface, with a period which is synchronous with the object's rotation. This variation must be the consequence of some heterogeneity of the asteroid's surface, including regions characterized by different albedo, or composition, or regolith properties, or a combination of the above features. For a long time, this kind of conclusion has remained essentially qualitative. Now, after the extensive exploration of Vesta's surface by Dawn, it is possible to interpret the data set of polarimetric measurements of Vesta, including some unpublished data presented here for the first time, in terms of a correspondence between the degree of linear polarization and the variation of local properties of the surface visible to ground-based observers during Vesta's rotation, as seen at different epochs and under different illumination conditions. This makes it possible to refine our knowledge of the empirical relation between polarization properties and albedo, which is commonly used to derive the albedo from remote-sensing measurements of linear polarization of atmosphereless Solar system bodies. | URI: | http://hdl.handle.net/20.500.12386/24799 | URL: | https://academic.oup.com/mnras/article/456/1/248/1069783 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stv2683 | Bibcode ADS: | 2016MNRAS.456..248C | Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
File in questo documento:
File | Descrizione | Dimensioni | Formato | |
---|---|---|---|---|
DAWNVesta.pdf | 2.01 MB | Adobe PDF | Visualizza/apri |
Page view(s)
53
controllato il 26-apr-2024
Download(s)
19
controllato il 26-apr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Tutti i documenti in DSpace sono pubblicati ad Accesso Aperto, salvo diversa indicazione per alcuni documenti specifici.