NAOC Open IR
AzTEC survey of the central molecular zone: data reduction, analysis, and preliminary results
Tang, Yuping1,2; Wang, Q. Daniel1; Wilson, Grant W.1; Heyer, Mark H.1; Gutermuth, Robert A.1; Schloerb, Peter1; Yun, Min S.1; Bally, John3; Loinard, Laurent4; Silich, Sergiy5; Chavez, Miguel5; Haggard, Daryl6; Montana, Alfredo5,7; Sanchez-Arguelles, David5; Zeballos, Milagros5,8; Zavala, Jorge A.5,9; Leon-Tavares, Jonathan5,10
2021-08-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume505Issue:2Pages:2392-2411
AbstractWe present a large-scale survey of the central molecular zone (CMZ) of our Galaxy, as well as a monitoring program of Sgr A*, with the AzTEC/Large Millimeter Telescope in the 1.1 mm continuum. Our 1.1 mm map covers the main body of the CMZ over a field of 1.6 x 1.1 deg(2) with an angular resolution of 10.5 arcsec and a depth of 15 mJy beam(-1). To account for the intensity loss due to the background removal process, we combine this map with lower resolution CSO/Bolocam and Planck/HFI data to produce an effective full intensity 1.1 mm continuum map. With this map and existing Herschel surveys, we have carried out a comprehensive analysis of the spectral energy distribution of dust in the CMZ. A key component of this analysis is the implementation of a model-based deconvolution approach, incorporating the Point Spread Functions (PSFs) of the different instruments, and hence recovering a significant amount of spatial information on angular scales larger than 10.5 arcsec. The monitoring of Sgr A* was carried out as part of a worldwide, multiwavelength campaign when the so-called G2 object was undergoing the pericentre passage around the massive black hole. Our preliminary results include (1) high-resolution maps of column density, temperature and dust spectral index across the CMZ; (2) a 1.1 mm light curve of Sgr A* showing an outburst of 140 per cent maximum amplitude on 2014 May 9th May, 2014 but otherwise only stochastic variations of 10 per cent and no systematic long-term change, consistent with other observations.
KeywordISM: cloud dust, extinction Galaxy: centre submillimeter: ISM
Funding OrganizationNational Science Foundation (NSF) ; National Science Foundation (NSF) ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; NASA ; NASA ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; NASA ; NASA ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; NASA ; NASA ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; NASA ; NASA
DOI10.1093/mnras/stab1191
WOS KeywordSGR-A-ASTERISK ; STAR-FORMATION ; GALACTIC-CENTER ; X-RAY ; MILKY-WAY ; HI-GAL ; SAGITTARIUS ; RADIO ; VARIABILITY ; CLOUDS
Language英语
Funding ProjectNational Science Foundation (NSF)[0504852] ; National Aeronautics and Space Administration (NASA)[NNX17AL67G] ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant[CB-A1-S-28458] ; NASA
Funding OrganizationNational Science Foundation (NSF) ; National Science Foundation (NSF) ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; NASA ; NASA ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; NASA ; NASA ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; NASA ; NASA ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Aeronautics and Space Administration (NASA) ; National Aeronautics and Space Administration (NASA) ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; Consejo Nacional de Ciencia y Tecnolog'ia (CONACYT) Mexico research grant ; NASA ; NASA
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000672803400064
PublisherOXFORD UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/76598
Collection中国科学院国家天文台
Corresponding AuthorTang, Yuping
Affiliation1.Univ Massachusetts, Dept Astron, Amherst, MA 01002 USA
2.Chinese Acad Sci, Natl Astron Observ, South Amer Ctr Astron, Beijing 100012, Peoples R China
3.Univ Colorado, Ctr Astrophys & Space Astron, Astrophys & Planetary Sci Dept, UCB 389, Boulder, CO 80309 USA
4.Univ Nacl Autonoma Mexico, Inst Radioastron & Astrofis, Apartado Postal 3-72, Morelia 58090, Michoacan, Mexico
5.Inst Nacl Astrofis Opt & Elect INAOE, Luis Enrique Erro 1, Puebla 72840, Mexico
6.McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada
7.Consejo Nacl Ciencia & Technol, Av Insurgentes Sur 1582, Ciudadde Mexico 03940, Mexico
8.Univ las Amer Puebla, Dept Actuarla Fis & Matemat, Puebla 72810, Mexico
9.Univ Texas Austin, Dept Astron, 2515 Speedway Blvd Stop C1400, Austin, TX 78712 USA
10.Flemish Inst Technol Res VITO, Ctr Remote Sensing & Earth Observat Proc TAP Remo, Boeretang 282, B-2400 Mol, Belgium
Recommended Citation
GB/T 7714
Tang, Yuping,Wang, Q. Daniel,Wilson, Grant W.,et al. AzTEC survey of the central molecular zone: data reduction, analysis, and preliminary results[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,505(2):2392-2411.
APA Tang, Yuping.,Wang, Q. Daniel.,Wilson, Grant W..,Heyer, Mark H..,Gutermuth, Robert A..,...&Leon-Tavares, Jonathan.(2021).AzTEC survey of the central molecular zone: data reduction, analysis, and preliminary results.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,505(2),2392-2411.
MLA Tang, Yuping,et al."AzTEC survey of the central molecular zone: data reduction, analysis, and preliminary results".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 505.2(2021):2392-2411.
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