中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 国家天文台
  3. 中国科学院国家天文台
Revealing the dust grain polarization properties as a function of extinction and distance towards NGC 1893

文献类型：期刊论文

作者Bijas, N.1; Eswaraiah, Chakali1; Wang, Jia-Wei2; Jose, Jessy1; Chen, Wen-Ping3; Li, Di4,5; Lai, Shih-Ping6; Ojha, D. K.7
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2022-08-05
卷号515期号:3页码:3352-3369
ISSN号0035-8711
关键词magnetic fields polarization (ISM:) dust, extinction
DOI10.1093/mnras/stac1927
英文摘要Dust polarization observations at optical wavelengths help us to understand the dust grain properties and trace the plane-of-the-sky component of the magnetic field. In this study, we make use of the I-band polarization data acquired from AIMPOL along with the distances (d) and extinction (A(V)) data to study the variation of polarization fraction (P) as a function of A(V) and d towards the star-forming region, NGC 1893. We employ a broken power-law fit and Bayesian analysis on extinction (A(V)) versus polarization efficiency (P/A(V)) and distance (d) versus rate of polarization (P/d). We find that P/A(V) shows a break at an extinction of similar to 0.9 mag, whereas P/d exhibits a break at a distance of similar to 1.5 kpc. Based on these, we categorize the dust towards NGC 1893 into two populations: (i) foreground dust confined to A(V) < similar to 1 mag and distance up to similar to 2 kpc and (ii) Perseus spiral arm dust towards NGC 1893 characterized with A(V) > similar to 1 mag and distance beyond similar to 2 kpc. Foreground dust exhibits higher polarization efficiency but a lower polarization rate, whereas Perseus dust shows a lower polarization efficiency but a slightly higher polarization rate. Hence, we suggest that while polarization efficiency reveals the dust grain alignment, the rate of polarization infers about the distribution of dust grains towards NGC 1893. Further, we also shed a light on the spatial variation of intrinsic polarization and magnetic field orientation, and other parameters within the intracluster medium of NGC 1893.
WOS关键词INFRARED POLARIMETRY ; RADIATIVE TORQUES ; MAGNETIC-FIELDS ; LINEAR-POLARIZATION ; INTERSTELLAR GRAINS ; STAR-FORMATION ; DARK CLOUDS ; ALIGNMENT ; PHOTOMETRY ; FILAMENT
资助项目Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India[RJF/2020/000071]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000836707600001
资助机构Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India ; Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India ; Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India ; Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India ; Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India ; Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India ; Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India ; Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India
源URL[http://ir.bao.ac.cn/handle/114a11/87632]  
专题中国科学院国家天文台
通讯作者Bijas, N.; Eswaraiah, Chakali
作者单位1.Indian Inst Sci Educ & Res IISER Tirupati, Karakambadi Rd,Mangalam PO, Tirupati 517507, Andhra Pradesh, India
2.Acad Sinica, Inst Astron & Astrophys, 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan
3.Natl Cent Univ, Grad Inst Astron, Taoyuan 32001, Taiwan
4.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100049, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Natl Tsing Hua Univ, Inst Astron, 101,Sect 2,Kuang Fu Rd, Hsinchu 30013, Taiwan
7.Tata Inst Fundamental Res, Dept Astron & Astrophys, Homi Bhabha Rd, Mumbai 400005, Maharashtra, India
推荐引用方式
GB/T 7714		 Bijas, N.,Eswaraiah, Chakali,Wang, Jia-Wei,et al. Revealing the dust grain polarization properties as a function of extinction and distance towards NGC 1893[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2022,515(3):3352-3369.
APA Bijas, N..,Eswaraiah, Chakali.,Wang, Jia-Wei.,Jose, Jessy.,Chen, Wen-Ping.,...&Ojha, D. K..(2022).Revealing the dust grain polarization properties as a function of extinction and distance towards NGC 1893.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,515(3),3352-3369.
MLA Bijas, N.,et al."Revealing the dust grain polarization properties as a function of extinction and distance towards NGC 1893".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 515.3(2022):3352-3369.

入库方式： OAI收割

来源：国家天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。