The 107 GHz Methanol Transition Is a Dasar in G0.253+0.016

doi:10.3847/1538-4357/acf0c1

XAO OpenIR

	The 107 GHz Methanol Transition Is a Dasar in G0.253+0.016
	Bulatek, Alyssa 1; Ginsburg, Adam 1; Darling, Jeremy 2; Henkel, Christian3,4,5 ; Menten, Karl M.3
	2023-10-01
Source Publication	ASTROPHYSICAL JOURNAL
ISSN	0004-637X
Volume	956 Issue:2 Pages:78
Contribution Rank	5
Abstract	We present observations of population anti-inversion in the 31 - 40 A + transition of CH3OH (methanol) at 107.013831 GHz toward the Galactic center cloud G0.253+0.016 ("The Brick"). Anti-inversion of molecular level populations can result in absorption lines against the cosmic microwave background (CMB) in a phenomenon known as a "dasar." We model the physical conditions under which the 107 GHz methanol transition dases and determine that dasing occurs at densities below 106 cm-3 and column densities between 1013 and 1016 cm-2. We also find that for this transition, dasing does not strongly depend on the gas kinetic temperature. We evaluate the potential of this tool for future deep galaxy surveys. We note that other works have already reported absorption in this transition (e.g., in NGC 253), but we provide the first definitive evidence that it is absorption against the CMB rather than against undetected continuum sources.
DOI	10.3847/1538-4357/acf0c1
Indexed By	SCI
Language	英语
WOS Keyword	STAR-FORMATION ; FORMALDEHYDE DENSITOMETRY ; INTERSTELLAR H2CO ; ANTI-INVERSION ; ABSORPTION ; LINE ; ASTROPY ; PROJECT ; MASERS ; DISTANCE
Funding Project	NSF[AST 2008101] ; NSF[2206511] ; NSF[CAREER 2142300]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:001081057300001
Publisher	IOP Publishing Ltd
Funding Organization	NSF
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/5544
Collection	中国科学院新疆天文台射电天文研究室_恒星形成与演化研究团组
Corresponding Author	Bulatek, Alyssa
Affiliation	1.Univ Florida, Dept Astron, POB 112055, Gainesville, FL 32611 USA 2.Univ Colorado, Ctr Astrophys & Space Astron, Dept Astrophys & Planetary Sci, 389 UCB, Boulder, CO 80309, Afghanistan 3.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 4.King Abdulaziz Univ, Fac Sci, Astron Dept, POB 80203, Jeddah 21589, Saudi Arabia 5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
Recommended Citation GB/T 7714	Bulatek, Alyssa,Ginsburg, Adam,Darling, Jeremy,et al. The 107 GHz Methanol Transition Is a Dasar in G0.253+0.016[J]. ASTROPHYSICAL JOURNAL,2023,956(2):78.
APA	Bulatek, Alyssa,Ginsburg, Adam,Darling, Jeremy,Henkel, Christian,&Menten, Karl M..(2023).The 107 GHz Methanol Transition Is a Dasar in G0.253+0.016.ASTROPHYSICAL JOURNAL,956(2),78.
MLA	Bulatek, Alyssa,et al."The 107 GHz Methanol Transition Is a Dasar in G0.253+0.016".ASTROPHYSICAL JOURNAL 956.2(2023):78.

Files in This Item:
File Name/Size	DocType	Version	Access	License
Bulatek-2023-The 107（1334KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	View Application Full Text

File name:	Bulatek-2023-The 107 GHz Methanol Transition I.pdf
Format:	Adobe PDF

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院新疆天文台机构知识库