Diffuse Interstellar Bands λ6379, λ6614, and λ6660 in the LAMOST-MRS Spectra

被引：0

作者：

Wu, Ke-Fei ^{[1
,2
]}

Luo, A-Li ^{[1
,2
,3
,4
]}

Chen, Jian-Jun ^{[1
,2
]}

Hou, Wen ^{[1
]}

Zhao, Yong-Heng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Opt Astron, Beijing 100101, Peoples R China

[2] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China

[3] Dezhou Univ, Sch Informat Management, Dezhou 253023, Peoples R China

[4] Dezhou Univ, Inst Astron Sci, Dezhou 253023, Peoples R China

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2022年 / 22卷 / 08期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

ISM: molecules; methods: data analysis; (ISM:) dust; extinction; HIGH-RESOLUTION PROFILES; INFRARED-EMISSION; DATA RELEASE; STARS; DUST; SPECTROSCOPY; ANGSTROM; CATALOG; SYSTEM; LINES;

D O I：

10.1088/1674-4527/ac7388

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Diffuse interstellar bands (DIBs) have always been a mysterious existence in astronomical research. In this work, we provide more DIB samples to slightly uncover this mystery. With the LAMOST medium-resolution survey (MRS) spectra, we detected three DIBs lambda 6379, lambda 6614, and lambda 6660, obviously superimposed on the spectra of 11,003 stars. These spectra cover spectral types from O to K, which can provide a large number of candidates for further research on DIBs. The sample shows a clear positive correlation between the strength of DIBs and extinction, which agrees with the result in the literature. In addition, there exist two peaks in each of the velocity distribution of these three DIBs, and the velocity differences between two peaks of each pair are consistent. The reason for the two velocity components is due to the Galactic rotation.

引用

页数：18

共 23 条

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Monreal-Ibero, A.
Lallement, R.
ASTRONOMY & ASTROPHYSICS, 2017, 599
[22] Electronic spectra of cold gas phase PAH cations:: Towards the identification of the Diffuse Interstellar Bands carriers
Bréchignac, P
Pino, T
ASTRONOMY & ASTROPHYSICS, 1999, 343 (02) : L49 - L52
[23] C-60 cation as the carrier of the lambda 9577 angstrom and lambda 9632 angstrom diffuse interstellar bands: further support from the VLT/X-Shooter spectra
Nie, T. P.
Xiang, F. Y.
Li, Aigen
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 509 (04) : 4908 - 4915

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