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| DOI | 10.1093/MNRAS/STAA1891 | ||||
| Año | 2020 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We present results from Atacama Large Millimeter/submillimeter Array (ALMA) observations of CS from the nearby galaxy NGC 1068 (similar to 14 Mpc). This Seyfert 2 barred galaxy possesses a circumnuclear disc (CND, r similar to 200 pc) and a starburst ring (SB ring, r similar to 1.3 kpc). These high-resolution maps (similar to 0.5 arcsec, similar to 35 pc) allow us to analyse specific sub-regions in the galaxy and investigate differences in line intensity ratios and physical conditions, particularly those between the CND and SB ring. Local thermodynamic equilibrium (LTE) analysis of the gas is used to calculate CS densities in each sub-region, followed by the non-LTE analysis conducted using the radiative transfer code RADEX to fit observations and constrain gas temperature, CS column density and hydrogen density. Finally, the chemical code UCLCHEM is used to reconstruct the gas, allowing an insight into its origin and chemical history. The density of hydrogen in the CND is found to be >= 10(5) cm(-2), although exact values vary, reaching 10(6) cm(-2) at the active galactic nucleus. The conditions in the two arms of the SB ring appear similar to one another, though the density found (similar to 10(4) cm(-2)) is lower than in the CND. The temperature in the CND increases from east to west, and is also overall greater than found in the SB ring. These modelling methods indicate the requirement for multiphase gas components in order to fit the observed emission over the galaxy. A larger number of high-resolution transitions across the SLED may allow for further constraining of the conditions, particularly in the SB ring.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Scourfield, M. | - |
UCL - Reino Unido
University College London - Reino Unido |
| 2 | Viti, Serena | Mujer |
UCL - Reino Unido
University College London - Reino Unido |
| 3 | Garcia-Burillo, S. | Hombre |
Observ Madrid - España
Observatorio Astronomico Nacional - España |
| 4 | Saintonge, Amelie | Mujer |
UCL - Reino Unido
University College London - Reino Unido |
| 5 | Combes, Francoise | Mujer |
CNRS - Francia
CNRS Centre National de la Recherche Scientifique - Francia |
| 6 | Fuente, Asuncion | - |
Observ Madrid - España
Observatorio Astronomico Nacional - España |
| 7 | Henkel, C. | Hombre |
Mar Planck Inst Radioastron - Alemania
King Abdulaziz Univ - Arabia Saudí Max Planck Institute for Radio Astronomy - Alemania King Abdulaziz University - Arabia Saudí |
| 8 | Alonso Herrero, Almudena | Mujer |
Ctr Astrobiol CSIC INTA - España
Centro de Astrobiología (CSIC-INTA) - España CSIC-INTA - Centro de Astrobiología (CAB) - España |
| 9 | Harada, Nanase | - |
Acad Sinica - Taiwán
Academia Sinica, Institute of Astronomy and Astrophysics - Taiwán |
| 10 | Takano, Shuro | - |
Nihon Univ - Japón
Nihon University - Japón |
| 11 | Nakajima, T. | - |
Nagoya Univ - Japón
Nagoya University - Japón |
| 12 | Martin, S. | - |
ESO - Chile
Atacama Large Millimeter Array - Chile European Southern Observatory Santiago - Chile Atacama Large Millimeter-submillimeter Array - Chile |
| 13 | Krips, M. | - |
Inst Radio Astron Millimetr IRAM - Francia
IRAM Institut de RadioAstronomie Millimétrique - Francia |
| 14 | van der Werf, Paul P. | Hombre |
Leiden Univ - Países Bajos
Leiden Observatory Research Institute - Países Bajos Sterrewacht Leiden - Países Bajos |
| 15 | Aalto, Susanne | Mujer |
Chalmers Univtechnol - Suecia
Chalmers University of Technology, Onsala Space Observatory - Suecia Chalmers University of Technology - Suecia |
| 16 | Usero, Antonio | Hombre |
Observ Madrid - España
Observatorio Astronomico Nacional - España |
| 17 | Kohno, Kotaro | Hombre |
Univ Tokyo - Japón
The University of Tokyo - Japón Research Center for the Early Universe - Japón |
| Fuente |
|---|
| National Science Foundation |
| ASIAA |
| Korea Astronomy and Space Science Institute |
| National Radio Astronomy Observatory |
| National Institutes of Natural Sciences |
| National Research Council Canada |
| Ministry of Science and Technology, Taiwan |
| National Astronomical Observatory of Japan |
| JAO |
| Associated Universities |
| Australian Diabetes Society |
| Unidad de Excelencia "Maria de Maeztu"- Centro de Astrobiologia (INTA-CSIC) |
| MCIU/AEI/FEDER, UE |
| Agradecimiento |
|---|
| SGB, AA-H, and AU acknowledge support from grant - PGC2018094671-B-I00 (MCIU/AEI/FEDER, UE). AAH work was done under project No. MDM-2017-0737 Unidad de Excelencia "Maria de Maeztu"- Centro de Astrobiologia (INTA-CSIC). |
| SGB, AA-H, and AU acknowledge support from grant - PGC2018094671-B-I00 (MCIU/AEI/FEDER, UE). AAH work was done under project No. MDM-2017-0737 Unidad de Excelencia "Maria de Maeztu"- Centro de Astrobiologia (INTA-CSIC). |
| This paper makes use of the following ALMA data: ADS/JAO.ALMA#2011.0.00083.S, ADS/JAO.ALMA#2013.1.00055.S, ADS/JAO.ALMA#2015.1.01144.S. ALMA is a partnership of European Southern Observatory (ESO) (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO, and NAOJ. SGB, AA-H, and AU acknowledge support from grant-PGC2018-094671-B-I00 (MCIU/AEI/FEDER, UE). AAH work was done under project No. MDM-2017-0737 Unidad de Excelencia "María de Maeztu"-Centro de Astrobiología (INTA-CSIC). The authors would like to thank the anonymous referee for constructive comments that improved the original version of the paper. |