ALMA Central Molecular Zone Exploration Survey (ACES) – V. CS(2 − 1), SO(23 − 12), CH3CHO(51, 4 − 41, 3), HC3N(11 − 10) and H40α lines data

Hsieh, PY; Walker, DL; Ginsburg, A; Barnes, AT; Lu, X; Sánchez-Monge, Á; Gramze, SR; Budaiev, N; Pound, MW; Pineda, JE; Cook, C; Henshaw, JD; Immer, K; Issac, N; Jeff, D; Liang, FH; Longmore, SN; Mills, EAC; Martín, S; Pan, X; Pillai, TGS; Zhang, Q; Bally, J; Battersby, C; Colzi, L; Ho, PTP; Jiménez-Serra, I; Kruijssen, JMD; Petkova, M; Sormani, MC; Tress, RG; Wallace, J; Armijos-Abendaño, J; Armillotta, L; Bijas, N; Buddhacharya, R; Busch, LA; Butterfield, NO; Chevance, M; Díaz-Rodríguez, AK; Federrath, C; Fedriani, R; García, P; Gu, QL; Houghton, RJ; Hu, Y; Karoly, J; Klessen, RS; Krumholz, MR; Mazoochi, F; Nogueras-Lara, F; Paré, D; Riquelme-Vásquez, D; Rivilla, VM; Santa-Maria, MG; Schmiedeke, A; Sofue, Y; Tolls, V; Wang, QD; Williams, GM; Xu, F; Zhang, S

ALMA Central Molecular Zone Exploration Survey (ACES) – V. CS(2 − 1), SO(23 − 12), CH3CHO(51, 4 − 41, 3), HC3N(11 − 10) and H40α lines data

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Hsieh, PY, Walker, DL, Ginsburg, A, Barnes, AT, Lu, X, Sánchez-Monge, Á, Gramze, SR, Budaiev, N, Pound, MW, Pineda, JE, Cook, C, Henshaw, JD ORCID: 0000-0001-9656-7682, Immer, K, Issac, N, Jeff, D, Liang, FH, Longmore, SN ORCID: 0000-0001-6353-0170, Mills, EAC, Martín, S, Pan, X et al (2026) ALMA Central Molecular Zone Exploration Survey (ACES) – V. CS(2 − 1), SO(23 − 12), CH3CHO(51, 4 − 41, 3), HC3N(11 − 10) and H40α lines data. Monthly Notices of the Royal Astronomical Society, 552 (2). ISSN 0035-8711

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ALMA Central Molecular Zone Exploration Survey (ACES) – V. CS(2 − 1), SO(23 − 12), CH3CHO(51, 4 − 41, 3), HC3N(11 − 10) and H40α lines data.pdf - Published Version
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Publisher URL: https://doi.org/10.1093/mnras/stag253

Abstract

We present data from the ALMA Central Molecular Zone Exploration Survey (ACES) Large Program, which provides broad spectral-line and 3 mm continuum coverage of the Central Molecular Zone (CMZ) at a spatial resolution of 0.1 pc. The survey delivers homogeneous, wide-field mosaics that enable direct comparisons of the physical and chemical conditions across diverse environments in the Galactic centre. In this data release paper, we present the CS((Formula presented) ), SO(2(Formula presented) ), CH(Formula presented) CHO((Formula presented) ), HC(Formula presented) N((Formula presented) ), and H40(Formula presented) lines observed simultaneously within two broad spectral windows. These lines reveal pronounced spatial and chemical variations across the CMZ, tracing distinct components of molecular gas, shock-affected regions, and ionized structures. The high angular resolution and multi-line capability of the ACES data set make it a powerful resource for future studies of gas dynamics, star formation activity, and the physical connection between the CMZ and Sgr A*.

Item Type:	Article
Uncontrolled Keywords:	ISM: structure; Galaxy: centre; 5101 Astronomical Sciences; 51 Physical Sciences; 0201 Astronomical and Space Sciences; Astronomy & Astrophysics; 5101 Astronomical sciences; 5107 Particle and high energy physics; 5109 Space sciences
Subjects:	Q Science > QB Astronomy Q Science > QC Physics
Divisions:	Astrophysics Research Institute
Publisher:	Oxford University Press
Date of acceptance:	2 February 2026
Date of first compliant Open Access:	2 November 2026
Date Deposited:	02 Nov 2026 15:51
Last Modified:	02 Nov 2026 15:51
DOI or ID number:	10.1093/mnras/stag253
URI:	https://researchonline.ljmu.ac.uk/id/eprint/29801

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