论文标题
PDRS4ALL:JWST的早期发行科学计划,来自大型星星的辐射反馈
PDRs4All: A JWST Early Release Science Program on radiative feedback from massive stars
论文作者
论文摘要
大型恒星通过辐射和机械反馈过程破坏了其出生的分子云材料。这些过程对星际物质在我们的银河系和整个宇宙中的演变具有深远的影响,从红移的剧烈恒星形成的时代到今天。可以通过观察到巨大恒星的远粉状光子光子在中性原子和分子气中产生温暖的气体和灰尘区域来探测主要的反馈过程。 PDR的发射提供了一种独特的工具,可以详细研究与大多数质量相关的物理和化学过程,这些过程与大多数质量和情节培养基相关,包括弥漫性云,原始星际磁盘以及分子云表面,球,行星星云和恒星形成区域。 PDR发射主导星系星系的红外(IR)光谱。因此,用James Webb空间望远镜(JWST)获得的大多数银河系和外乳术观察将在PDR发射中出现。在本文中,我们使用Miri,NirSpec和Nircam仪器提出了一项早期发行科学计划,该计划致力于象征性和附近PDR的观察:Orion Bar。这些早期的JWST观察将提供旨在识别JWST观测值的关键PDR特性的模板数据集。这些数据将用于基准PDR模型,并将其扩展到JWST时代。我们还介绍了我们将提供给社区的增强科学产品。这些模板数据集和增强科学的产品将指导我们银河系及其他地区对星形成区域的未来建议的准备,并将促进即将到来的JWST观测值的数据分析和解释。
Massive stars disrupt their natal molecular cloud material through radiative and mechanical feedback processes. These processes have profound effects on the evolution of interstellar matter in our Galaxy and throughout the Universe, from the era of vigorous star formation at redshifts of 1-3 to the present day. The dominant feedback processes can be probed by observations of the Photo-Dissociation Regions (PDRs) where the far-ultraviolet photons of massive stars create warm regions of gas and dust in the neutral atomic and molecular gas. PDR emission provides a unique tool to study in detail the physical and chemical processes that are relevant for most of the mass in inter- and circumstellar media including diffuse clouds, proto-planetary disks and molecular cloud surfaces, globules, planetary nebulae, and star-forming regions. PDR emission dominates the infrared (IR) spectra of star-forming galaxies. Most of the Galactic and extragalactic observations obtained with the James Webb Space Telescope (JWST) will therefore arise in PDR emission. In this paper we present an Early Release Science program using the MIRI, NIRSpec, and NIRCam instruments dedicated to the observations of an emblematic and nearby PDR: the Orion Bar. These early JWST observations will provide template datasets designed to identify key PDR characteristics in JWST observations. These data will serve to benchmark PDR models and extend them into the JWST era. We also present the Science-Enabling products that we will provide to the community. These template datasets and Science-Enabling products will guide the preparation of future proposals on star-forming regions in our Galaxy and beyond and will facilitate data analysis and interpretation of forthcoming JWST observations.