Acknowledgement
We are grateful to the anonymous reviewers for their helpful suggestions.
References
- Armijos-Abendano, J., Martin-Pintado, J., Requena-Torres, M. A., et al. 2019, Herschel Water Maps towards the Vicinity of the Black Hole Sgr A*, A&A, 624, 112
- Ballone, A., Mapelli, M., & Trani, A. A. 2019, A Common Origin for the Circumnuclear Disc and the Nearby Molecular Clouds in the Galactic Centre, MNRAS, 488, 5802 https://doi.org/10.1093/mnras/stz2147
- Boehle, A., Ghez, A. M., Schodel, R., et al. 2016, An Improved Distance and Mass Estimate for Sgr A* from a Multistar Orbit Analysis, ApJ, 830, 17 https://doi.org/10.3847/0004-637X/830/1/17
- Debattista, V. P. & Shen, J. 2007, Long-lived Double-barred Galaxies from Pseudobulges, ApJ, 654, L127 https://doi.org/10.1086/511264
- El-Zant, A. A. & Shlosman, I. 2003, Long-lived Doublebarred Galaxies: Critical Mass and Length Scales, ApJ, 595, L41 https://doi.org/10.1086/378974
- Erwin, P. 2004, Double-barred galaxies. I. A Catalog of Barred Galaxies with Stellar Secondary Bars and Inner Disks, A&A, 415, 941 https://doi.org/10.1051/0004-6361:20034408
- Gallego, S. G. & Cuadra, J. 2017, Satellite Infall and Mass Deposition on the Galactic Centre, MNRAS, 467, L41 https://doi.org/10.1093/mnrasl/slw254
- Gerhard, O. & Martinez-Valpuesta, I. 2012, The Inner Galactic Bulge: Evidence for a Nuclear Bar?, ApJL, 744, L8 https://doi.org/10.1088/2041-8205/744/1/L8
- Herrnstein, R. M. & Ho, P. T. P. 2005, The Nature of the Molecular Environment within 5 Parsecs of the Galactic Center, ApJ, 620, 287 https://doi.org/10.1086/426047
- Hsieh, P.-Y., Koch, P. M., Ho, P. T. P., et al. 2017, Molecular Gas Feeding the Circumnuclear Disk of the Galactic Center, ApJ, 847, 3 https://doi.org/10.3847/1538-4357/aa8329
- Hurley, J. R., Pols, O. R., & Tout, C. A. 2000, Comprehensive Analytic Formulae for Stellar Evolution as a Function of Mass and Metallicity, MNRAS, 315, 543 https://doi.org/10.1046/j.1365-8711.2000.03426.x
- Jacob, R., Schonberner, D., & Steffen, M. 2013, The Evolution of Planetary Nebulae. VIII. True Expansion Rates and Visibility Times, A&A, 558, A78 https://doi.org/10.1051/0004-6361/201321532
- Kim, S. S. & Morris, M. 2001, Spatial Diffusion of Stars in the Inner Galactic Bulge, ApJ, 554, 1059 https://doi.org/10.1086/321425
- Kroupa, P. 2002, The Initial Mass Function of Stars: Evidence for Uniformity in Variable Systems, Science, 295, 82 https://doi.org/10.1126/science.1067524
- Kruijssen, J. M. D., Longmore, S. N., Elmegreen, B. G., et al. 2014, What Controls Star Formation in the Central 500 pc of the Galaxy?, MNRAS, 440, 3370 https://doi.org/10.1093/mnras/stu494
- Laine, S., Shlosman, I., Knapen, J. H., & Peletier, R. F. 2002, Nested and Single Bars in Seyfert and Non-Seyfert Galaxies, ApJ, 567, 97 https://doi.org/10.1086/323964
- Lang, M., Holley-Bockelmann, K., Bogdanovic, T., et al. 2013, Can a Satellite Galaxy Merger Explain the Active Past of the Galactic Centre?, MNRAS, 430, 2574 https://doi.org/10.1093/mnras/sts638
- Launhardt, R., Zylka, R., & Mezger, P. G. 2002, The Nuclear Bulge of the Galaxy. III. Large-scale Physical Characteristics of Stars and Interstellar Matter, A&A, 384, 112 https://doi.org/10.1051/0004-6361:20020017
- Lu, X., Zhang, Q., Kauffmann, J., et al. 2017, The Molecular Gas Environment in the 20 km s-1 Cloud in the Central Molecular Zone, ApJ, 839, 18 https://doi.org/10.3847/1538-4357/aa689e
- Maciejewski, W. & Sparke, L. S. 2000, Orbits Supporting Bars within Bars, MNRAS, 313, 745 https://doi.org/10.1046/j.1365-8711.2000.03270.x
- Maciejewski, W. & Small, E. E. 2010, Orbital Support of Fast and Slow Inner Bars in Double-barred Galaxies, ApJ, 719, 622 https://doi.org/10.1088/0004-637X/719/1/622
- Mapelli, M. & Trani, A. A. 2016, Modelling the Formation of the Circumnuclear Ring in the Galactic Centre, A&A, 585, A161 https://doi.org/10.1051/0004-6361/201527195
- Martins, F., Genzel, R., Hillier, D. J., et al. 2007, Stellar and Wind Properties of Massive Stars in the Central Parsec of the Galaxy, A&A, 468, 233 https://doi.org/10.1051/0004-6361:20066688
- Merritt, D. 2010, The Distribution of Stars and Stellar Remnants at the Galactic Center, ApJ, 718, 739 https://doi.org/10.1088/0004-637X/718/2/739
- Minh, Y., C., Liu, H. B., Ho, P. T. P., et al. 2013, Green Bank Telescope Observations of the NH3 (3, 3) and (6, 6) Transitions toward Sagittarius A Molecular Clouds, ApJ, 773, 31 https://doi.org/10.1088/0004-637X/773/1/31
- Morris, M. & Serabyn, E., 1996, The Galactic Center Environment, ARA&A, 34, 645 https://doi.org/10.1146/annurev.astro.34.1.645
- Namekata, D., Habe, A., Matsui, H., & Saitoh, T. R. 2009, Mass Supply to Galactic Center due to Nested Bars in the Galaxy, ApJ, 691, 1525 https://doi.org/10.1088/0004-637X/691/2/1525
- Pfuhl, O., Fritz, T. K., Zilka, M., et al. 2011, The Star Formation History of the Milky Way's Nuclear Star Cluster, ApJ, 741, 108 https://doi.org/10.1088/0004-637X/741/2/108
- Rodriguez-Fernandez, N. J. & Combes, F. 2008, Gas Flow Models in the Milky Way Embedded Bars, A&A, 489, 115 https://doi.org/10.1051/0004-6361:200809644
- Schonrich, R., Aumer, M., & Sale, S. E. 2015, Kinematic Detection of the Galactic Nuclear Disk, ApJL, 812, L21 https://doi.org/10.1088/2041-8205/812/2/L21
- Shin, J., Kim, J., Kim, S. S., & Park, C. B. 2014, EUNHA: a New Cosmological Hydrodynamic Simulation Code, JKAS, 47, 87
- Shin, J., Kim, S. S., Baba, J., et al. 2017, Hydrodynamic Simulations of the Central Molecular Zone with a Realistic Galactic Potential, ApJ, 841, 74 https://doi.org/10.3847/1538-4357/aa7061
- Spaans, M. & Norman, C. A. 1997, Cosmological Evolution of Dwarf Galaxies: The Influence of Star Formation and the Multiphase Interstellar Medium, ApJ, 483, 87 https://doi.org/10.1086/304231
- Springel, V. 2005, The Cosmological Simulation Code GADGET-2, MNRAS, 364, 1105 https://doi.org/10.1111/j.1365-2966.2005.09655.x
- Tress, R. G., Sormani, M. C., Glover, S. C. O., et al. 2020, Simulations of the Milky Way's Central Molecular Zone - I. Gas Dynamics, MNRAS, 499, 4455 https://doi.org/10.1093/mnras/staa3120
- Wardle, M. & Yusef-Zadeh, F. 2008, On the Formation of Compact Stellar Disks around Sagittarius A*, ApJ, 683, L37 https://doi.org/10.1086/591471