arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2303.04820astro-ph.GA
收藏

用JWST将剑鱼座30的消光定律扩展到红外

Extending the extinction law in 30 Doradus to the infrared with JWST

Katja Fahrion, Guido De Marchi

摘要:

利用JWST上的近红外相机(NIRCam)对大麦云星云30 Dor恒星形成区进行了早期观测,从而将哈勃空间望远镜的研究扩展到红外波段。我们用红团簇星在12个波段上导出了红化矢量的方向,并给出了从$0.3$到$4.7\,μ$ m这一大质量恒星形成区的消光规律。在波长长于1 $μ$米,我们发现总消光比和选择性消光比的两倍高的弥漫银河系星际介质和相对斜率的变化从光学到红外域。此外,我们推导出一个红外消光图,并发现消光密切遵循30多尔的高度嵌入区域。

英文摘要:

We measure the extinction law in the 30 Dor star formation region in the Large Magellanic Cloud using Early Release Observations taken with Near-Infrared Camera (NIRCam) onboard the JWST, thereby extending previous studies with the Hubble Space Telescope to the infrared. We use red clump stars to derive the direction of the reddening vector in twelve bands and present the extinction law in this massive star forming region from $0.3$ to $4.7\,μ$m. At wavelengths longer than 1 $μ$m, we find a ratio of total and selective extinction twice as high as in the diffuse Milky Way interstellar medium and a change in the relative slope from the optical to the infrared domain. Additionally, we derive an infrared extinction map and find that extinction closely follows the highly embedded regions of 30 Dor.

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。

↑