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arXiv 1009.0348astro-ph.GA
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斯皮策c2d小云和核的AMI大阵列射电连续观测

AMI Large Array radio continuum observations of Spitzer c2d small clouds and cores

Anna M. M. Scaife, Emily I. Curtis, Matthew Davies, Thomas M. O. Franzen, Keith J. B. Grainge, Michael P. Hobson, Natasha Hurley-Walker, Anthony N. Lasenby, Mal… 展开作者

Anna M. M. Scaife, Emily I. Curtis, Matthew Davies, Thomas M. O. Franzen, Keith J. B. Grainge, Michael P. Hobson, Natasha Hurley-Walker, Anthony N. Lasenby, Malak Olamaie, Guy G. Pooley, Carmen Rodríguez-Gonzálvez, Richard D. E. Saunders, Michel Schammel, Paul F. Scott, Timothy Shimwell, David Titterington, Elizabeth Waldram, Jonathan T. L. Zwart

摘要:

我们对从斯皮策c2 d小云和核心计划中选出的13个原恒星区域进行了高分辨率(25”)的深1.8厘米射电连续成像,以检测和量化深埋年轻原恒星的厘米波发射。在这些区域内,我们检测到15个紧凑的无线电源,我们确定为无线电原恒星,包括两个可能的新检测。该样品一般是低辐射热光度,并包含几个新检测到的VeLLO源。我们确定的1.8厘米射电光度测热光度的相关性,L_rad -L_bol,为样品和讨论的无线电发射的性质的电离气体的可用来源。我们还研究了L_rad-L_IR的相关性,并提出射电通量密度可以作为低光度原恒星内部光度的代用指标。

英文摘要:

We perform deep 1.8 cm radio continuum imaging towards thirteen protostellar regions selected from the Spitzer c2d small clouds and cores programme at high resolution (25") in order to detect and quantify the cm-wave emission from deeply embedded young protostars. Within these regions we detect fifteen compact radio sources which we identify as radio protostars including two probable new detections. The sample is in general of low bolometric luminosity and contains several of the newly detected VeLLO sources. We determine the 1.8 cm radio luminosity to bolometric luminosity correlation, L_rad -L_bol, for the sample and discuss the nature of the radio emission in terms of the available sources of ionized gas. We also investigate the L_rad-L_IR correlation and suggest that radio flux density may be used as a proxy for the internal luminosity of low luminosity protostars.

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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