Planck 中期结果 XXIII：结合辅助数据从 Planck 导出的银河平面辐射成分
星系天体物理
2015-07-22 v2
摘要
Planck 数据与辅助数据相结合，为分离内银河系的弥漫辐射成分提供了独特的机会。本文旨在阐明太阳半径以内强恒星形成区域内各种辐射成分的形态，并澄清各成分之间的关系。所覆盖的银河平面区域为银经 l=300-0-60 度，此处恒星形成最为活跃，且辐射强度足以进行有意义的成分分离。该银经范围内的银纬宽度介于 1 度至 2 度之间，对应在典型距离 6 kpc 处的 FWHM z-宽度为 100-200 pc。本文研究的四种辐射成分分别为同步辐射、自由 - 自由辐射、反常微波辐射 (AME) 以及热（振动）尘埃辐射。这些成分是通过利用 Planck 的宽频率覆盖范围 (28.4-857 GHz)，结合 0.408-2.3 GHz 的低频射电数据、23-94 GHz 的 WMAP 数据，以及来自 DIRBE 和 IRAS 的远红外 (FIR) 数据，构建沿银河平面位置处的光谱能量分布 (SEDs) 来识别的。自由 - 自由成分由射电复合线 (RRL) 数据确定。研究发现，在 20-40 GHz 频率范围内，银河平面上的 AME 亮度与自由 - 自由辐射相当，其银纬宽度与热尘埃相似；在银经 l=300-0-60 度范围内，它占 28.4 GHz 总辐射的 45+/-1%。自由 - 自由成分最窄，反映了它是由当前恒星形成产生的，正如 OB 星的窄分布所示踪的那样。它是 60 至 100 GHz 之间银河平面上的主导辐射。利用来自该电离气体的 RRL 评估其距离，得出自由 - 自由 z-宽度的 FWHM 约为 100 pc...(略)
引用
@article{arxiv.1406.5093,
title = {Planck intermediate results. XXIII. Galactic plane emission components derived from Planck with ancillary data},
author = {Planck Collaboration and P. A. R. Ade and N. Aghanim and M. I. R. Alves and M. Arnaud and M. Ashdown and F. Atrio-Barandela and J. Aumont and C. Baccigalupi and A. J. Banday and R. B. Barreiro and E. Battaner and K. Benabed and A. Benoit-Lévy and J. -P. Bernard and M. Bersanelli and P. Bielewicz and J. Bobin and A. Bonaldi and J. R. Bond and F. R. Bouchet and F. Boulanger and C. Burigana and J. -F. Cardoso and A. Catalano and A. Chamballu and H. C. Chiang and P. R. Christensen and D. L. Clements and S. Colombi and L. P. L. Colombo and C. Combet and F. Couchot and B. P. Crill and F. Cuttaia and L. Danese and R. D. Davies and R. J. Davis and P. de Bernardis and A. de Rosa and G. de Zotti and J. Delabrouille and C. Dickinson and J. M. Diego and S. Donzelli and O. Doré and M. Douspis and X. Dupac and G. Efstathiou and T. A. Enßlin and H. K. Eriksen and F. Finelli and O. Forni and M. Frailis and E. Franceschi and S. Galeotta and K. Ganga and R. T. Génova-Santos and T. Ghosh and M. Giard and G. Giardino and Y. Giraud-Héraud and J. González-Nuevo and K. M. Górski and A. Gregorio and A. Gruppuso and F. K. Hansen and D. L. Harrison and S. Henrot-Versillé and D. Herranz and S. R. Hildebrandt and E. Hivon and M. Hobson and A. Hornstrup and W. Hovest and K. M. Huffenberger and A. H. Jaffe and T. R. Jaffe and W. C. Jones and E. Keihänen and R. Keskitalo and T. S. Kisner and R. Kneissl and J. Knoche and M. Kunz and H. Kurki-Suonio and G. Lagache and A. Lähteenmäki and J. -M. Lamarre and A. Lasenby and C. R. Lawrence and R. Leonardi and M. Liguori and P. B. Lilje and M. Linden-Vørnle and M. López-Caniego and P. M. Lubin and J. F. Macías-Pérez and D. Maino and N. Mandolesi and P. G. Martin and E. Martínez-González and S. Masi and M. Massardi and S. Matarrese and P. Mazzotta and P. R. Meinhold and A. Melchiorri and L. Mendes and A. Mennella and M. Migliaccio and S. Mitra and M. -A. Miville-Deschênes and A. Moneti and L. Montier and G. Morgante and D. Mortlock and D. Munshi and J. A. Murphy and P. Naselsky and F. Nati and P. Natoli and H. U. Nørgaard-Nielsen and F. Noviello and D. Novikov and I. Novikov and C. A. Oxborrow and L. Pagano and F. Pajot and R. Paladini and D. Paoletti and F. Pasian and T. J. Pearson and M. Peel and O. Perdereau and F. Perrotta and F. Piacentini and M. Piat and E. Pierpaoli and D. Pietrobon and S. Plaszczynski and E. Pointecouteau and G. Polenta and N. Ponthieu and L. Popa and G. W. Pratt and S. Prunet and J. -L. Puget and J. P. Rachen and W. T. Reach and R. Rebolo and W. Reich and M. Reinecke and M. Remazeilles and C. Renault and S. Ricciardi and T. Riller and I. Ristorcelli and G. Rocha and C. Rosset and G. Roudier and J. A. Rubiño-Martín and B. Rusholme and M. Sandri and G. Savini and D. Scott and L. D. Spencer and V. Stolyarov and A. W. Strong and D. Sutton and A. -S. Suur-Uski and J. -F. Sygnet and J. A. Tauber and D. Tavagnacco and L. Terenzi and C. T. Tibbs and L. Toffolatti and M. Tomasi and M. Tristram and M. Tucci and L. Valenziano and J. Valiviita and B. Van Tent and J. Varis and P. Vielva and F. Villa and L. A. Wade and B. D. Wandelt and R. Watson and D. Yvon and A. Zacchei and A. Zonca},
journal= {arXiv preprint arXiv:1406.5093},
year = {2015}
}
备注
28 pages, A&A (accepted), on behalf of Planck Collaboration. Minor formatting and reference updates