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arXiv 1005.3864astro-ph.SR
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原行星盘中的气体(GASPS)1.首批成果

Gas in Protoplanetary Discs (GASPS) 1. First results

G. S. Mathews, W. R. F. Dent, J. P. Williams, C. D. Howard, G. Meeus, B. Riaz, A. Roberge, G. Sandell, B. Vandenbussche, G. Duchêne, I. Kamp, F. Ménard, B. Mont… 展开作者

G. S. Mathews, W. R. F. Dent, J. P. Williams, C. D. Howard, G. Meeus, B. Riaz, A. Roberge, G. Sandell, B. Vandenbussche, G. Duchêne, I. Kamp, F. Ménard, B. Montesinos, C. Pinte, W. F. Thi, P. Woitke, J. M. Alacid, S. M. Andrews, D. R. Ardila, G. Aresu, J. C. Augereau, D. Barrado, S. Brittain, D. R. Ciardi, W. Danchi, C. Eiroa, D. Fedele, C. A. Grady, I. de Gregorio-Monsalvo, A. Heras, N. Huelamo, A. Krivov, J. Lebreton, R. Liseau, C. Martin-Zaidi, I. Mendigutía, A. Mora, M. Morales-Calderon, H. Nomura, E. Pantin, I. Pascucci, N. Phillips, L. Podio, D. R. Poelman, S. Ramsay, K. Rice, P. Riviere-Marichalar, E. Solano, I. Tilling, H. Walker, G. J. White, G. Wright, the GASPS Collaboration

摘要:

星周盘在年轻恒星周围无处不在,但它们的气体和尘埃在几百万年的时间尺度上迅速消散。赫歇尔空间天文台可以研究温暖的圆盘大气,使用远红外光谱测量气体含量和激发条件,并使用远红外测光限制尘埃分布。目标-我们的目标是探测和确定四个目标中星周盘的气体含量,作为赫歇尔科学演示阶段的一部分。方法-我们进行了敏感的中等分辨率光谱和高灵敏度光度在λ~60 - 190微米使用光电探测器阵列相机和光谱仪仪器的赫歇尔空间天文台。结果-我们检测到年轻恒星HD 169142,TW Hydrae和RECX 15的[OI] 63微米发射,但没有HD 181327。没有显著检测到其他线,包括[CII] 158和[OI] 145。所有四颗恒星都在70和160微米的光度测量中被检测到。广泛的模型中提出的相关文件。

英文摘要:

Context - Circumstellar discs are ubiquitous around young stars, but rapidly dissipate their gas and dust on timescales of a few Myr. The Herschel space observatory allows for the study of the warm disc atmosphere, using far-infrared spectroscopy to measure gas content and excitation conditions, and far-IR photometry to constrain the dust distribution. Aims - We aim to detect and characterize the gas content of circumstellar discs in four targets as part of the Herschel science demonstration phase. Methods - We carried out sensitive medium resolution spectroscopy and high sensitivity photometry at lambda ~60-190 micron using the Photodetector Array Camera and Spectrometer instrument on the Herschel space observatory. Results - We detect [OI] 63 micron emission from the young stars HD 169142, TW Hydrae, and RECX 15, but not HD 181327. No other lines, including [CII] 158 and [OI] 145, are significantly detected. All four stars are detected in photometry at 70 and 160 micron. Extensive models are presented in associated papers.

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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