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PLATO 2.0使命

The PLATO 2.0 Mission

H. Rauer, C. Catala, C. Aerts, T. Appourchaux, W. Benz, A. Brandeker, J. Christensen-Dalsgaard, M. Deleuil, L. Gizon, M. -J. Goupil, M. Güdel, E. Janot-Pacheco,… 展开作者

H. Rauer, C. Catala, C. Aerts, T. Appourchaux, W. Benz, A. Brandeker, J. Christensen-Dalsgaard, M. Deleuil, L. Gizon, M. -J. Goupil, M. Güdel, E. Janot-Pacheco, M. Mas-Hesse, I. Pagano, G. Piotto, D. Pollacco, N. C. Santos, A. Smith, J. -C., Suárez, R. Szabó, S. Udry, V. Adibekyan, Y. Alibert, J. -M. Almenara, P. Amaro-Seoane, M. Ammler-von Eiff, M. Asplund, E. Antonello, W. Ball, S. Barnes, F. Baudin, K. Belkacem, M. Bergemann, G. Bihain, A. C. Birch, X. Bonfils, I. Boisse, A. S. Bonomo, F. Borsa, I. M. Brandão, E. Brocato, S. Brun, M. Burleigh, R. Burston, J. Cabrera, S. Cassisi, W. Chaplin, S. Charpinet, C. Chiappini, R. P. Church, Sz. Csizmadia, M. Cunha, M. Damasso, M. B. Davies, H. J. Deeg, R. F. DÍaz, S. Dreizler, C. Dreyer, P. Eggenberger, D. Ehrenreich, P. Eigmüller, A. Erikson, R. Farmer, S. Feltzing, F. de Oliveira Fialho, P. Figueira, T. Forveille, M. Fridlund, R. A. García, P. Giommi, G. Giuffrida, M. Godolt, J. Gomes da Silva, T. Granzer, J. L. Grenfell, A. Grotsch-Noels, E. Günther, C. A. Haswell, A. P. Hatzes, G. Hébrard, S. Hekker, R. Helled, K. Heng, J. M. Jenkins, A. Johansen, M. L. Khodachenko, K. G. Kislyakova, W. Kley, U. Kolb, N. Krivova, F. Kupka, H. Lammer, A. F. Lanza, Y. Lebreton, D. Magrin, P. Marcos-Arenal, P. M. Marrese, J. P. Marques, J. Martins, S. Mathis, S. Mathur, S. Messina, A. Miglio, J. Montalban, M. Montalto, M. J. P. F. G. Monteiro, H. Moradi, E. Moravveji, C. Mordasini, T. Morel, A. Mortier, V. Nascimbeni, R. P. Nelson, M. B. Nielsen, L. Noack, A. J. Norton, A. Ofir, M. Oshagh, R. -M. Ouazzani, P. Pápics, V. C. Parro, P. Petit, B. Plez, E. Poretti, A. Quirrenbach, R. Ragazzoni, G. Raimondo, M. Rainer, D. R. Reese, R. Redmer, S. Reffert, B. Rojas-Ayala, I. W. Roxburgh, S. Salmon, A. Santerne, J. Schneider, J. Schou, S. Schuh, H. Schunker, A. Silva-Valio, R. Silvotti, I. Skillen, I. Snellen, F. Sohl, S. G. Sousa, A. Sozzetti, D. Stello, K. G. Strassmeier, M. Švanda, Gy. M. Szabó, A. Tkachenko, D. Valencia, V. van Grootel, S. D. Vauclair, P. Ventura, F. W. Wagner, N. A. Walton, J. Weingrill, S. C. Werner, P. J. Wheatley, K. Zwintz

摘要:

PLATO 2.0最近被选为欧空局的M3发射机会(2022/24)。它以统计数字提供准确的关键行星参数(半径、质量、密度和年龄),解决了一些基本问题,如:行星系是如何形成和演化的?是否有其他系统拥有像我们这样的行星,包括潜在的可居住行星?PLATO 2.0仪器由34个小口径望远镜组成(32个25秒读数,2个2.5秒读数),提供宽视场(2232 ° 2)和大光度星等范围(4 - 16等)。它的重点是在广阔的视野中的明亮(4 - 11等)恒星,通过光度凌日来探测和描述小至地球大小的行星,然后通过地面径向速度跟踪测量来确定其质量。将对这些明亮的恒星进行星震学研究,以获得高度精确的恒星参数,包括质量和年龄。明亮的目标和星震学的结合导致大体积行星参数的高精度:行星半径,质量和年龄分别为2%,4 - 10%和10%。计划中的基线观测战略包括两个长点(2 - 3年),以探测和大量表征进入类太阳恒星宜居带(HZ)的行星,以及一个额外的步进凝视阶段,以覆盖总共约50%的天空。PLATO 2.0将观测多达1,000,000颗恒星,并探测和表征数百颗小行星,以及数千颗海王星到气体巨星区域的行星。因此,它将提供第一个具有准确半径、质量、平均密度和年龄的大规模特征行星目录。该目录将包括中等轨道距离的类地行星,这些行星的地面温度适中。该参数范围与批量特征化行星的统计数字的覆盖范围是PLATO 2.0所独有的。

英文摘要:

PLATO 2.0 has recently been selected for ESA's M3 launch opportunity (2022/24). Providing accurate key planet parameters (radius, mass, density and age) in statistical numbers, it addresses fundamental questions such as: How do planetary systems form and evolve? Are there other systems with planets like ours, including potentially habitable planets? The PLATO 2.0 instrument consists of 34 small aperture telescopes (32 with 25 sec readout cadence and 2 with 2.5 sec candence) providing a wide field-of-view (2232 deg2) and a large photometric magnitude range (4-16 mag). It focusses on bright (4-11 mag) stars in wide fields to detect and characterize planets down to Earth-size by photometric transits, whose masses can then be determined by ground-based radial-velocity follow-up measurements. Asteroseismology will be performed for these bright stars to obtain highly accurate stellar parameters, including masses and ages. The combination of bright targets and asteroseismology results in high accuracy for the bulk planet parameters: 2%, 4-10% and 10% for planet radii, masses and ages, respectively. The planned baseline observing strategy includes two long pointings (2-3 years) to detect and bulk characterize planets reaching into the habitable zone (HZ) of solar-like stars and an additional step-and-stare phase to cover in total about 50% of the sky. PLATO 2.0 will observe up to 1,000,000 stars and detect and characterize hundreds of small planets, and thousands of planets in the Neptune to gas giant regime out to the HZ. It will therefore provide the first large-scale catalogue of bulk characterized planets with accurate radii, masses, mean densities and ages. This catalogue will include terrestrial planets at intermediate orbital distances, where surface temperatures are moderate. Coverage of this parameter range with statistical numbers of bulk characterized planets is unique to PLATO 2.0.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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