Reconstructing the shock history in the CMZ of NGC 253 with ALCHEMI

doi:10.1051/0004-6361/202245659

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	Reconstructing the shock history in the CMZ of NGC 253 with ALCHEMI
	Huang, K. -y.1; Viti, S.1,2; Holdship, J.1,2; Mangum, J. G.3; Martin, S.4,5; Harada, N.6,7,8; Muller, S.9; Sakamoto, K.7; Tanaka, K.10; Yoshimura, Y.11; Herrero-Illana, R.4,12; Meier, D. S.13,14; Behrens, E.15; van der Werf, P. P.1; Henkel, C.16,17,18 ; Garcia-Burillo, S.19; Rivilla, V. M.20; Emig, K. L.3; Colzi, L.20; Humire, P. K.16; Aladro, R.16; Bouvier, M.1
	2023-07-14
Source Publication	ASTRONOMY & ASTROPHYSICS
ISSN	0004-6361
Volume	675 Pages:A151
Contribution Rank	18
Abstract	Context. HNCO and SiO are well-known shock tracers and have been observed in nearby galaxies, including the nearby (D = 3.5 Mpc) starburst galaxy NGC 253. The simultaneous detection of these two species in regions where the star-formation rate is high may be used to study the shock history of the gas.Aims. We perform a multi-line molecular study of NGC 253 using the shock tracers SiO and HNCO and aim to characterize its gas properties. We also explore the possibility of reconstructing the shock history in the central molecular zone (CMZ) of the galaxy.Methods. Six SiO transitions and eleven HNCO transitions were imaged at high resolution 1'.'6 (28 pc) with the Atacama Large Millimeter/submillimeter Array (ALMA) as part of the ALCHEMI Large Programme. Both non local thermaldynamic equilibrium (non-LTE) radiative transfer analysis and chemical modeling were performed in order to characterize the gas properties and investigate the chemical origin of the emission.Results. The nonLTE radiative transfer analysis coupled with Bayesian inference shows clear evidence that the gas traced by SiO has different densities and temperatures than that traced by HNCO, with an indication that shocks are needed to produce both species. Chemical modeling further confirms such a scenario and suggests that fast and slow shocks are responsible for SiO and HNCO production, respectively, in most GMCs. We are also able to infer the physical characteristics of the shocks traced by SiO and HNCO for each GMC.Conclusions. Radiative transfer and chemical analysis of the SiO and HNCO in the CMZ of NGC 253 reveal a complex picture whereby most of the GMCs are subjected to shocks. We speculate on the possible shock scenarios responsible for the observed emission and provide potential history and timescales for each shock scenario. Observations of higher spatial resolution for these two species are required in order to quantitatively differentiate between the possible scenarios.
Keyword	galaxies: ISM galaxies: individual: NGC253 astrochemistry galaxies: starburst ISM: molecules
DOI	10.1051/0004-6361/202245659
Indexed By	SCI
Language	英语
WOS Keyword	SPATIALLY-RESOLVED CHEMISTRY ; COMPLEX ORGANIC-MOLECULES ; SUPER STAR-CLUSTERS ; GALACTIC-CENTER ; LINE EMISSION ; CHANDRA OBSERVATIONS ; STARBURST GALAXIES ; ALMA OBSERVATIONS ; COLOGNE DATABASE ; SIO EMISSION
Funding Project	European Research Council (ERC) ; Spanish Ministerio de Ciencia e Innovacin ; European ALMA Regional Center node in the Netherlands ; Spanish grant - MCIN/AEI ; [833460.vii] ; [PID2019-106027GA-C44] ; [PID2019-105552RB-C41]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:001034545500009
Publisher	EDP SCIENCES S A
Funding Organization	European Research Council (ERC) ; Spanish Ministerio de Ciencia e Innovacin ; European ALMA Regional Center node in the Netherlands ; Spanish grant - MCIN/AEI
Citation statistics	Cited Times:12[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/5375
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	Huang, K. -y.
Affiliation	1.Leiden Univ, Leiden Observ, POB 9513, NL-2300 PA Leiden, Netherlands 2.UCL, Dept Phys & Astron, Gower St, London WC1E6BT, England 3.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA 4.European Southern Observ, Alonso de Cordova 3107, Santiago 7630355, Chile 5.Joint ALMA Observ, Alonso de Cordova 3107, Santiago 7630355, Chile 6.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 7.Acad Sinica, Inst Astron & Astrophys, 11F AS NTU Astron-Math Bldg 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan 8.Grad Univ Adv Studies SOKENDAI, Sch Sci, Dept Astron, 2-21-1 Osawa, Mitaka, Tokyo 1811855, Japan 9.Chalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, S-43992 Onsala, Sweden 10.Keio Univ, Fac Sci & Technol, Dept Phys, 3-14-1 Hiyoshi, Yokohama, Kanagawa 2238522, Japan 11.Univ Tokyo, Inst Astron, Grad Sch Sci, 2-21-1 Osawa, Mitaka, Tokyo 1810015, Japan 12.CSIC, Inst Space Sci ICE, Campus UAB, Barcelona 08193, Spain 13.New Mexico Inst Min & Technol, 801 Leroy Pl, Socorro, NM 87801 USA 14.Natl Radio Astron Observ, POB O,1003 Lopezville Rd, Socorro, NM 87801 USA 15.Univ Virginia, Dept Astron, POB 400325,530 McCormick Rd, Charlottesville, VA 22904 USA 16.Max Planck Inst Radioastron, Auf dem Hugel 69, D-53121 Bonn, Germany 17.King Abdulaziz Univ, Fac Sci, Astron Dept, POB 80203, Jeddah 21589, Saudi Arabia 18.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 19.IGN, Observ Astron Nacl, Observ Madrid, Alfonso XII 3, Madrid 28014, Spain 20.CSIC, Ctr Astrobiol, INTA, Ctra Torrejon Ajalvir Km 4, Madrid 28850, Spain
Recommended Citation GB/T 7714	Huang, K. -y.,Viti, S.,Holdship, J.,et al. Reconstructing the shock history in the CMZ of NGC 253 with ALCHEMI[J]. ASTRONOMY & ASTROPHYSICS,2023,675:A151.
APA	Huang, K. -y..,Viti, S..,Holdship, J..,Mangum, J. G..,Martin, S..,...&Bouvier, M..(2023).Reconstructing the shock history in the CMZ of NGC 253 with ALCHEMI.ASTRONOMY & ASTROPHYSICS,675,A151.
MLA	Huang, K. -y.,et al."Reconstructing the shock history in the CMZ of NGC 253 with ALCHEMI".ASTRONOMY & ASTROPHYSICS 675(2023):A151.

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