Observations of the Near-Infrared Spectrum of the Zodiacal Light with CIBER
K. Tsumura, J. Battle, J. Bock, A. Cooray, V. Hristov, B. Keating, D. H. Lee, L. R. Levenson, P. Mason, T. Matsumoto, S. Matsuura, U. W. Nam, T. Renbarger, I. S… 展开作者
K. Tsumura, J. Battle, J. Bock, A. Cooray, V. Hristov, B. Keating, D. H. Lee, L. R. Levenson, P. Mason, T. Matsumoto, S. Matsuura, U. W. Nam, T. Renbarger, I. Sullivan, K. Suzuki, T. Wada, M. Zemcov
Interplanetary dust (IPD) scatters solar radiation which results in the zodiacal light that dominates the celestial diffuse brightness at optical and near-infrared wavelengths. Both asteroid collisions and cometary ejections produce the IPD, but the relative contribution from these two sources is still unknown. The Low Resolution Spectrometer (LRS) onboard the Cosmic Infrared Background Experiment (CIBER) observed the astrophysical sky spectrum between 750 and 2100 nm over a wide range of ecliptic latitude. The resulting zodiacal light spectrum is redder than the solar spectrum, and shows a broad absorption feature, previously unreported, at approximately 900 nm, suggesting the existence of silicates in the IPD material. The spectral shape of the zodiacal light is isotropic at all ecliptic latitudes within the measurement error. The zodiacal light spectrum, including the extended wavelength range to 2500 nm using IRTS data, is qualitatively similar to the reflectance of S-type asteroids. This result can be explained by the proximity of S-type asteroidal dust to Earth's orbit, and the relativily high albedo of asteridal dust compared with cometary dust.
Reliability of Zodiacal Background Models at Small Solar Elongations
HUN-REN CSFK Konkoly Observatory(匈牙利科学院天文研究所孔科利观测站);MTA Centre of Excellence(匈牙利科学院卓越中心);ELTE Eötvös Loránd University(厄特沃什·罗兰大学);Institute of Physics and Astronomy(物理与天文学研究所);Max-Planck-Institut für extraterrestrische Physik(马克斯·普朗克地外物理研究所);Instituto de Astrofísica de Canarias (IAC)(加那利群岛天体物理学研究所);Departamento de Astrofísica, Universidad de La Laguna(拉帕尔马大学天体物理学系);European Space Agency – ESRIN(欧洲空间局埃斯林研究中心);Université Côte d’Azur(蔚蓝海岸大学);Observatoire de la Côte d’Azur(蔚蓝海岸天文台);CNRS(法国国家科学研究中心);Laboratoire Lagrange(拉格朗日实验室);School of Physics and Astronomy, University of Leicester(莱斯特大学物理与天文学院);Department of Physics, University of Helsinki(赫尔辛基大学物理系);Institute of Space Science (ISS) - INFLPR subsidiary(太空科学研究所)
SKYSURF-11: A New Zodiacal Light Model Optimized for Optical Wavelengths
Arizona State University(亚利桑那州立大学);NASA Goddard Space Flight Center(美国宇航局戈达德太空飞行中心);Space Telescope Science Institute(空间望远镜科学研究所);Center for Astrophysics — Harvard & Smithsonian(天体物理中心——哈佛与史密森尼学会);University of Arizona(亚利桑那大学)
A likely detection of a local interplanetary dust cloud passing near the Earth in the AKARI mid-infrared all-sky map
上下文我们正在创建AKARI中红外全天空漫反射地图。通过对黄道带发射的前景去除,我们偶然发现了一个明亮的残余分量,其角大小约为50 x 20度。波长为9微米。目的。我们调查的起源和物理性质的残留成分。方法.我们测量了AKARI中红外全天空图中剩余分量的表面亮度。结果尽管在2006年7月和2007年7月观测到了同一区域,但仅在2007年1月才显著地检测到残留成分,这表明它不是由于银河系的排放。我们认为,这可能是一个小的云通过地球附近。通过比较观测到的强度比I_9微米/I_18微米与预期的强度比假设热平衡的尘埃颗粒在1 AU的各种尘埃成分和大小,我们发现,尘埃颗粒在移动的云很可能是比典型的颗粒,产生大部分的黄道光小得多。结论.考虑到观测的日期和位置,它很可能起源于2007年1月25日发生的太阳日冕物质抛射(CME)。
Cosmoglobe DR2. III. Improved modelling of zodiacal light with COBE-DIRBE through global Bayesian analysis
University of Oslo(奥斯陆大学);Università degli Studi di Milano(米兰大学);Laboratoire de Physique des 2 infinis – Irène Joliot Curie (IJCLab)(双无穷物理实验室——伊雷娜·约里奥-居里(IJCLab));Chalmers University of Technology(查尔姆斯理工大学);Università di Trento(特伦托大学);INFN sezione di Milano(意大利国家核物理研究所米兰分部)