...
首页> 外文期刊>Astronomy and astrophysics >The Herschel first look at protostars in the Aquila rift
【24h】

The Herschel first look at protostars in the Aquila rift

机译:赫歇尔首先看了天鹰座裂谷中的原星

获取原文
           

摘要

As part of the science demonstration phase of the Herschel mission of the Gould Belt key program, the Aquila rift molecular complex has been observed. The complete imaging with SPIRE 250/350/500m and PACS 70/160mallows a deep investigation of embedded protostellar phases, probing ofthe dust emission from warm inner regions at 70 and 160m to the bulk of the cold envelopes between 250 and 500m. We used a systematic detection technique operating simultaneously on all Herschelbands to build a sample of protostars. Spectral energy distributionsare derived to measure luminosities and envelope masses, and to placethe protostars in an evolutionary diagram. The spatial distribution of protostars indicatesthree star-forming sites in Aquila, with W40/Sh2-64 H II region by farthe richest. Most of the detected protostars are newly discovered. Fora reduced area around the Serpens South cluster, we could compare the Herschel census of protostars with Spitzer results. The Herschel protostars are younger than in Spitzer with 7 Class0 YSOs newly revealed by Herschel. For the entire Aquila field, we find a total of 45-60 Class0YSOs discovered by Herschel. This confirms the global statistics of several hundred Class0 YSOs that should be found in the whole Gould Belt Survey.Key words: stars: formation - ISM: clouds
机译:作为古尔德带(Gould Belt)关键计划的赫歇尔(Herschel)任务的科学演示阶段的一部分,已观测到天鹰座裂谷分子复合物。使用SPIRE 250/350 / 500m和PACS 70/160进行的完整成像可以对埋藏的原星阶段进行深入研究,探测从70和160m温暖的内部区域到250至500m之间的大部分冷包层的尘埃排放。我们使用了一种系统的检测技术,该技术在所有Herschelband上同时运行,以构建原恒星样本。得出光谱能量分布以测量光度和包络质量,并将原恒星置于演化图中。原恒星的空间分布表明,天鹰座有3个恒星形成地点,其中W40 / Sh2-64 H II区域最丰富。大多数检测到的原恒星都是新发现的。对于Serpens South星团周围的缩小区域,我们可以将原星的赫歇尔普查与Spitzer结果进行比较。 Herschel的原星比Spitzer的年轻,Herschel新揭示了7种Class0 YSO。对于整个Aquila领域,我们发现Herschel共发现了45至60个Class0YSO。这证实了在整个古尔德带调查中应该发现的数百种Class0 YSO的全球统计数据。关键词:恒星:编队-ISM:云

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号