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Hatchfield, HP, Battersby, C, Keto, E, Walker, D, Barnes, A, Callanan, D, Ginsburg, A, Henshaw, JD, Kauffmann, J, Kruijssen, JMD, Longmore, SN, Lu, X, Mills, EAC, Pillai, T, Zhang, Q, Bally, J, Butterfield, N, Contreras, YA, Ho, LC, Ott, J , Patel, N and Tolls, V (2020) CMZoom II: Catalog of Compact Submillimeter Dust Continuum Sources in the Milky Way's Central Molecular Zone. The Astrophysical Journal Supplement Series, 251 (1). ISSN 1538-4365
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Abstract
In this paper we present the CMZoom Survey's catalog of compact sources (< 10'', ~0.4pc) within the Central Molecular Zone (CMZ). CMZoom is a Submillimeter Array (SMA) large program designed to provide a complete and unbiased map of all high column density gas (N(H$_2$) $\geq$ 10$^{23}$ cm$^{-2}$) of the innermost 500pc of the Galaxy in the 1.3mm dust continuum. We generate both a robust catalog designed to reduce spurious source detections, and a second catalog with higher completeness, both generated using a pruned dendrogram. In the robust catalog, we report 285 compact sources, or 816 in the high completeness catalog. These sources have effective radii between 0.04-0.4 pc, and are the potential progenitors of star clusters. The masses for both catalogs are dominated by the Sagittarius B2 cloud complex, where masses are likely unreliable due to free-free contamination, uncertain dust temperatures, and line-of-sight confusion. Given the survey selection and completeness, we predict that our robust catalog accounts for more than ~99% of compact substructure capable of forming high mass stars in the CMZ. This catalog provides a crucial foundation for future studies of high mass star formation in the Milky Way's Galactic Center.
| Item Type: | Article |
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| Uncontrolled Keywords: | astro-ph.GA; astro-ph.GA |
| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
| Divisions: | Astrophysics Research Institute |
| Publisher: | American Astronomical Society |
| Related URLs: | |
| Date Deposited: | 28 Sep 2020 11:37 |
| Last Modified: | 09 Nov 2021 00:50 |
| DOI or ID number: | 10.3847/1538-4365/abb610 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/13734 |
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