ESCARGOT: Mapping Vertical Phase Spiral Characteristics Throughout the Real and Simulated Milky Way
The recent discovery of a spiral pattern in the vertical kinematic structure in the solar neighborhood provides a prime opportunity to study nonequilibrium dynamics in the Milky Way from local stellar kinematics. Furthermore, results from simulations indicate that even in a limited volume, differenc...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/acf1fc |
| _version_ | 1797680492641779712 |
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| author | Elise Darragh-Ford Jason A. S. Hunt Adrian M. Price-Whelan Kathryn V. Johnston |
| author_facet | Elise Darragh-Ford Jason A. S. Hunt Adrian M. Price-Whelan Kathryn V. Johnston |
| author_sort | Elise Darragh-Ford |
| collection | DOAJ |
| description | The recent discovery of a spiral pattern in the vertical kinematic structure in the solar neighborhood provides a prime opportunity to study nonequilibrium dynamics in the Milky Way from local stellar kinematics. Furthermore, results from simulations indicate that even in a limited volume, differences in stellar orbital histories allow us to trace variations in the initial perturbation across large regions of the disk. We present ESCARGOT , a novel algorithm for studying these variations in both simulated and observed data sets. ESCARGOT automatically extracts key quantities from the structure of a given phase spiral, including the time since perturbation and the perturbation mode. We test ESCARGOT on simulated data and show that it is capable of accurately recovering information about the time since the perturbation occurred as well as subtle differences in phase spiral morphology due to stellar locations in the disk at the time of perturbation. We apply ESCARGOT to kinematic data from data release 3 of the Gaia mission in bins of guiding radius. We show that similar structural differences in morphology occur in the Gaia phase spirals as a function of stellar orbital history. These results indicate that the phase spirals are the product of a complex dynamical response in the disk with large-scale coupling between different regions of phase space. |
| first_indexed | 2024-03-11T23:30:48Z |
| format | Article |
| id | doaj.art-69e8a61d51614b56ae7dcdb79289fe0e |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-11T23:30:48Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-69e8a61d51614b56ae7dcdb79289fe0e2023-09-20T08:33:04ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0195517410.3847/1538-4357/acf1fcESCARGOT: Mapping Vertical Phase Spiral Characteristics Throughout the Real and Simulated Milky WayElise Darragh-Ford0https://orcid.org/0000-0002-8800-5652Jason A. S. Hunt1https://orcid.org/0000-0001-8917-1532Adrian M. Price-Whelan2https://orcid.org/0000-0003-0872-7098Kathryn V. Johnston3https://orcid.org/0000-0001-6244-6727Kavli Institute for Particle Astrophysics and Cosmology and Department of Physics, Stanford University , Stanford, CA 94305, USA; SLAC National Accelerator Laboratory , Menlo Park, CA 94025, USACenter for Computational Astrophysics , Flatiron Institute, 162 5th Avenue, New York City, NY 10010, USACenter for Computational Astrophysics , Flatiron Institute, 162 5th Avenue, New York City, NY 10010, USADepartment of Astronomy, Columbia University , New York, NY 10027, USAThe recent discovery of a spiral pattern in the vertical kinematic structure in the solar neighborhood provides a prime opportunity to study nonequilibrium dynamics in the Milky Way from local stellar kinematics. Furthermore, results from simulations indicate that even in a limited volume, differences in stellar orbital histories allow us to trace variations in the initial perturbation across large regions of the disk. We present ESCARGOT , a novel algorithm for studying these variations in both simulated and observed data sets. ESCARGOT automatically extracts key quantities from the structure of a given phase spiral, including the time since perturbation and the perturbation mode. We test ESCARGOT on simulated data and show that it is capable of accurately recovering information about the time since the perturbation occurred as well as subtle differences in phase spiral morphology due to stellar locations in the disk at the time of perturbation. We apply ESCARGOT to kinematic data from data release 3 of the Gaia mission in bins of guiding radius. We show that similar structural differences in morphology occur in the Gaia phase spirals as a function of stellar orbital history. These results indicate that the phase spirals are the product of a complex dynamical response in the disk with large-scale coupling between different regions of phase space.https://doi.org/10.3847/1538-4357/acf1fcGalaxy disksSolar neighborhoodMilky Way diskGalaxy kinematicsGalaxy evolution |
| spellingShingle | Elise Darragh-Ford Jason A. S. Hunt Adrian M. Price-Whelan Kathryn V. Johnston ESCARGOT: Mapping Vertical Phase Spiral Characteristics Throughout the Real and Simulated Milky Way The Astrophysical Journal Galaxy disks Solar neighborhood Milky Way disk Galaxy kinematics Galaxy evolution |
| title | ESCARGOT: Mapping Vertical Phase Spiral Characteristics Throughout the Real and Simulated Milky Way |
| title_full | ESCARGOT: Mapping Vertical Phase Spiral Characteristics Throughout the Real and Simulated Milky Way |
| title_fullStr | ESCARGOT: Mapping Vertical Phase Spiral Characteristics Throughout the Real and Simulated Milky Way |
| title_full_unstemmed | ESCARGOT: Mapping Vertical Phase Spiral Characteristics Throughout the Real and Simulated Milky Way |
| title_short | ESCARGOT: Mapping Vertical Phase Spiral Characteristics Throughout the Real and Simulated Milky Way |
| title_sort | escargot mapping vertical phase spiral characteristics throughout the real and simulated milky way |
| topic | Galaxy disks Solar neighborhood Milky Way disk Galaxy kinematics Galaxy evolution |
| url | https://doi.org/10.3847/1538-4357/acf1fc |
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