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Gaia Data Release 2. The celestial reference frame (Gaia-CRF2)

(Gaia Collaboration) Gaia Collaboration; Mignard, F.; Klioner, S. A.; Lindegren, L.; Hernández, J.; Bastian, U.; Bombrun, A.; Hobbs, D.; Lammers, U.; Michalik, D. et al.
Gaia Data Release 2. The celestial reference frame (Gaia-CRF2) // Astronomy & astrophysics (Berlin), 616 (2018), A14, 15 doi:10.1051/0004-6361/201832916 (međunarodna recenzija, članak, znanstveni)

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Naslov
Gaia Data Release 2. The celestial reference frame (Gaia-CRF2)

Autori
Gaia Collaboration ; Mignard, F. ; Klioner, S. A. ; Lindegren, L. ; Hernández, J. ; Bastian, U. ; Bombrun, A. ; Hobbs, D. ; Lammers, U. ; Michalik, D. ; Ramos-Lerate, M. ; Biermann, M. ; Fernández-Hernández, J. ; Geyer, R. ; Hilger, T. ; Siddiqui, H. I. ; Steidelmüller, H. ; Babusiaux, C. ; Barache, C. ; Lambert, S. Andrei, A. H. ; Bourda, G. ; Charlot, P. ; Brown, A. G. A. ; Vallenari, A. ; Prusti, T. ; de Bruijne, J. H. J. ; Bailer-Jones, C. A. L. ; Evans, D. W. ; Eyer, L. ; Jansen, F. ; Jordi, C. ; Luri, X. ; Panem, C. ; Pourbaix, D. ; Randich, S. ; Sartoretti, P. ; Soubiran, C. ; van Leeuwen, F. ; Walton, N. A. ; Arenou, F. ; Cropper, M. ; Drimmel, R. ; Katz, D. ; Lattanzi, M. G. ; Bakker, J. ; Cacciari, C. ; Castañeda, J. ; Chaoul, L. ; Cheek, N. ; De Angeli, F. ; Fabricius, C. ; Guerra, R. ; Holl, B. ; Masana, E. ; Messineo, R. ; Mowlavi, N. ; Nienartowicz, K. ; Panuzzo, P. ; Portell, J. ; Riello, M. ; Seabroke, G. M. ; Tanga, P. ; Thévenin, F. ; Gracia-Abril, G. ; Comoretto, G. ; Garcia-Reinaldos, M. ; Teyssier, D. ; Altmann, M. ; Andrae, R. ; Audard, M. ; Bellas-Velidis, I. ; Benson, K. ; Berthier, J. ; Blomme, R. ; Burgess, P. ; Busso, G. ; Carry, B. ; Cellino, A. ; Clementini, G. ; Clotet, M. ; Creevey, O. ; Davidson, M. ; De Ridder, J. ; Delchambre, L. ; Dell'Oro, A. ; Ducourant, C. ; Fouesneau, M. ; Frémat, Y. ; Galluccio, L. ; García-Torres, M. ; González-Núñez, J. ; González-Vidal, J. J. ; Gosset, E. ; Guy, L. P. ; Halbwachs, J. -L. ; Hambly, N. C. ; Harrison, D. L. ; Hestroffer, D. ; Hodgkin, S. T. ; Hutton, A. ; Jasniewicz, G. ; Jean-Antoine-Piccolo, A. ; Jordan, S. ; Korn, A. J. ; Krone-Martins, A. ; Lanzafame, A. C. ; Lebzelter, T. ; Löffler, W. ; Manteiga, M. ; Marrese, P. M. ; Martín-Fleitas, J. M. ; Moitinho, A. ; Mora, A. ; Muinonen, K. ; Osinde, J. ; Pancino, E. ; Pauwels, T. ; Petit, J. -M. ; Recio-Blanco, A. ; Richards, P. J. ; Rimoldini, L. ; Robin, A. C. ; Sarro, L. M. ; Siopis, C. ; Smith, M. ; Sozzetti, A. ; Süveges, M. ; Torra, J. ; van Reeven, W. ; ... ; Palaversa, Lovro ; et al.

Kolaboracija
Gaia Collaboration

Izvornik
Astronomy & astrophysics (Berlin) (0004-6361) 616 (2018); A14, 15

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
astrometry ; reference systems ; catalogs

Sažetak
Context. The second release of Gaia data (Gaia DR2) contains the astrometric parameters for more than half a million quasars. This set defines a kinematically non-rotating reference frame in the optical domain. A subset of these quasars have accurate VLBI positions that allow the axes of the reference frame to be aligned with the International Celestial Reference System (ICRF) radio frame. Aims: We describe the astrometric and photometric properties of the quasars that were selected to represent the celestial reference frame of Gaia DR2 (Gaia-CRF2), and to compare the optical and radio positions for sources with accurate VLBI positions. Methods: Descriptive statistics are used to characterise the overall properties of the quasar sample. Residual rotation and orientation errors and large-scale systematics are quantified by means of expansions in vector spherical harmonics. Positional differences are calculated relative to a prototype version of the forthcoming ICRF3. Results: Gaia-CRF2 consists of the positions of a sample of 556 869 sources in Gaia DR2, obtained from a positional cross-match with the ICRF3-prototype and AllWISE AGN catalogues. The sample constitutes a clean, dense, and homogeneous set of extragalactic point sources in the magnitude range G ≃ 16 to 21 mag with accurately known optical positions. The median positional uncertainty is 0.12 mas for G < 18 mag and 0.5 mas at G = mag. Large-scale systematics are estimated to be in the range 20 to 30 μas. The accuracy claims are supported by the parallaxes and proper motions of the quasars in Gaia DR2. The optical positions for a subset of 2820 sources in common with the ICRF3-prototype show very good overall agreement with the radio positions, but several tens of sources have significantly discrepant positions. Conclusions: Based on less than 40% of the data expected from the nominal Gaia mission, Gaia-CRF2 is the first realisation of a non-rotating global optical reference frame that meets the ICRS prescriptions, meaning that it is built only on extragalactic sources. Its accuracy matches the current radio frame of the ICRF, but the density of sources in all parts of the sky is much higher, except along the Galactic equator.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA

Profili:

Avatar Url Lovro Palaversa (autor)

Poveznice na cjeloviti tekst rada:

doi www.aanda.org

Citiraj ovu publikaciju:

(Gaia Collaboration) Gaia Collaboration; Mignard, F.; Klioner, S. A.; Lindegren, L.; Hernández, J.; Bastian, U.; Bombrun, A.; Hobbs, D.; Lammers, U.; Michalik, D. et al.
Gaia Data Release 2. The celestial reference frame (Gaia-CRF2) // Astronomy & astrophysics (Berlin), 616 (2018), A14, 15 doi:10.1051/0004-6361/201832916 (međunarodna recenzija, članak, znanstveni)
(Gaia Collaboration) (Gaia Collaboration) Gaia Collaboration, Mignard, F., Klioner, S., Lindegren, L., Hernández, J., Bastian, U., Bombrun, A., Hobbs, D., Lammers, U. & Michalik, D. (2018) Gaia Data Release 2. The celestial reference frame (Gaia-CRF2). Astronomy & astrophysics (Berlin), 616, A14, 15 doi:10.1051/0004-6361/201832916.
@article{article, author = {Mignard, F. and Klioner, S. A. and Lindegren, L. and Hern\'{a}ndez, J. and Bastian, U. and Bombrun, A. and Hobbs, D. and Lammers, U. and Michalik, D. and Ramos-Lerate, M. and Biermann, M. and Fern\'{a}ndez-Hern\'{a}ndez, J. and Geyer, R. and Hilger, T. and Siddiqui, H. I. and Steidelm\"{u}ller, H. and Babusiaux, C. and Barache, C. and Bourda, G. and Charlot, P. and Brown, A. G. A. and Vallenari, A. and Prusti, T. and de Bruijne, J. H. J. and Bailer-Jones, C. A. L. and Evans, D. W. and Eyer, L. and Jansen, F. and Jordi, C. and Luri, X. and Panem, C. and Pourbaix, D. and Randich, S. and Sartoretti, P. and Soubiran, C. and van Leeuwen, F. and Walton, N. A. and Arenou, F. and Cropper, M. and Drimmel, R. and Katz, D. and Lattanzi, M. G. and Bakker, J. and Cacciari, C. and Casta\~{n}eda, J. and Chaoul, L. and Cheek, N. and De Angeli, F. and Fabricius, C. and Guerra, R. and Holl, B. and Masana, E. and Messineo, R. and Mowlavi, N. and Nienartowicz, K. and Panuzzo, P. and Portell, J. and Riello, M. and Seabroke, G. M. and Tanga, P. and Th\'{e}venin, F. and Gracia-Abril, G. and Comoretto, G. and Garcia-Reinaldos, M. and Teyssier, D. and Altmann, M. and Andrae, R. and Audard, M. and Bellas-Velidis, I. and Benson, K. and Berthier, J. and Blomme, R. and Burgess, P. and Busso, G. and Carry, B. and Cellino, A. and Clementini, G. and Clotet, M. and Creevey, O. and Davidson, M. and De Ridder, J. and Delchambre, L. and Dell'Oro, A. and Ducourant, C. and Fouesneau, M. and Fr\'{e}mat, Y. and Galluccio, L. and Garc\'{\i}a-Torres, M. and Gonz\'{a}lez-N\'{u}\~{n}ez, J. and Gonz\'{a}lez-Vidal, J. J. and Gosset, E. and Guy, L. P. and Halbwachs, J. -L. and Hambly, N. C. and Harrison, D. L. and Hestroffer, D. and Hodgkin, S. T. and Hutton, A. and Jasniewicz, G. and Jean-Antoine-Piccolo, A. and Jordan, S. and Korn, A. J. and Krone-Martins, A. and Lanzafame, A. C. and Lebzelter, T. and L\"{o}ffler, W. and Manteiga, M. and Marrese, P. M. and Mart\'{\i}n-Fleitas, J. M. and Moitinho, A. and Mora, A. and Muinonen, K. and Osinde, J. and Pancino, E. and Pauwels, T. and Petit, J. -M. and Recio-Blanco, A. and Richards, P. J. and Rimoldini, L. and Robin, A. C. and Sarro, L. M. and Siopis, C. and Smith, M. and Sozzetti, A. and S\"{u}veges, M. and Torra, J. and van Reeven, W. and Palaversa, Lovro}, year = {2018}, pages = {15}, DOI = {10.1051/0004-6361/201832916}, chapter = {A14}, keywords = {astrometry, reference systems, catalogs}, journal = {Astronomy and astrophysics (Berlin)}, doi = {10.1051/0004-6361/201832916}, volume = {616}, issn = {0004-6361}, title = {Gaia Data Release 2. The celestial reference frame (Gaia-CRF2)}, keyword = {astrometry, reference systems, catalogs}, chapternumber = {A14} }
@article{article, author = {Mignard, F. and Klioner, S. A. and Lindegren, L. and Hern\'{a}ndez, J. and Bastian, U. and Bombrun, A. and Hobbs, D. and Lammers, U. and Michalik, D. and Ramos-Lerate, M. and Biermann, M. and Fern\'{a}ndez-Hern\'{a}ndez, J. and Geyer, R. and Hilger, T. and Siddiqui, H. I. and Steidelm\"{u}ller, H. and Babusiaux, C. and Barache, C. and Bourda, G. and Charlot, P. and Brown, A. G. A. and Vallenari, A. and Prusti, T. and de Bruijne, J. H. J. and Bailer-Jones, C. A. L. and Evans, D. W. and Eyer, L. and Jansen, F. and Jordi, C. and Luri, X. and Panem, C. and Pourbaix, D. and Randich, S. and Sartoretti, P. and Soubiran, C. and van Leeuwen, F. and Walton, N. A. and Arenou, F. and Cropper, M. and Drimmel, R. and Katz, D. and Lattanzi, M. G. and Bakker, J. and Cacciari, C. and Casta\~{n}eda, J. and Chaoul, L. and Cheek, N. and De Angeli, F. and Fabricius, C. and Guerra, R. and Holl, B. and Masana, E. and Messineo, R. and Mowlavi, N. and Nienartowicz, K. and Panuzzo, P. and Portell, J. and Riello, M. and Seabroke, G. M. and Tanga, P. and Th\'{e}venin, F. and Gracia-Abril, G. and Comoretto, G. and Garcia-Reinaldos, M. and Teyssier, D. and Altmann, M. and Andrae, R. and Audard, M. and Bellas-Velidis, I. and Benson, K. and Berthier, J. and Blomme, R. and Burgess, P. and Busso, G. and Carry, B. and Cellino, A. and Clementini, G. and Clotet, M. and Creevey, O. and Davidson, M. and De Ridder, J. and Delchambre, L. and Dell'Oro, A. and Ducourant, C. and Fouesneau, M. and Fr\'{e}mat, Y. and Galluccio, L. and Garc\'{\i}a-Torres, M. and Gonz\'{a}lez-N\'{u}\~{n}ez, J. and Gonz\'{a}lez-Vidal, J. J. and Gosset, E. and Guy, L. P. and Halbwachs, J. -L. and Hambly, N. C. and Harrison, D. L. and Hestroffer, D. and Hodgkin, S. T. and Hutton, A. and Jasniewicz, G. and Jean-Antoine-Piccolo, A. and Jordan, S. and Korn, A. J. and Krone-Martins, A. and Lanzafame, A. C. and Lebzelter, T. and L\"{o}ffler, W. and Manteiga, M. and Marrese, P. M. and Mart\'{\i}n-Fleitas, J. M. and Moitinho, A. and Mora, A. and Muinonen, K. and Osinde, J. and Pancino, E. and Pauwels, T. and Petit, J. -M. and Recio-Blanco, A. and Richards, P. J. and Rimoldini, L. and Robin, A. C. and Sarro, L. M. and Siopis, C. and Smith, M. and Sozzetti, A. and S\"{u}veges, M. and Torra, J. and van Reeven, W. and Palaversa, Lovro}, year = {2018}, pages = {15}, DOI = {10.1051/0004-6361/201832916}, chapter = {A14}, keywords = {astrometry, reference systems, catalogs}, journal = {Astronomy and astrophysics (Berlin)}, doi = {10.1051/0004-6361/201832916}, volume = {616}, issn = {0004-6361}, title = {Gaia Data Release 2. The celestial reference frame (Gaia-CRF2)}, keyword = {astrometry, reference systems, catalogs}, chapternumber = {A14} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • Nature Index

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