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Kinematics in the Galactic Center with SiO masers

Published online by Cambridge University Press:  07 February 2024

Jennie Paine Open the ORCID record for Jennie Paine [Opens in a new window]  and
Jeremy Darling
Jennie Paine*
Affiliation:
Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences University of Colorado, 389 UCB, Boulder, CO 80309-0389, USA.
Jeremy Darling
Affiliation:
Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences University of Colorado, 389 UCB, Boulder, CO 80309-0389, USA.
*
email: jennie.paine@colorado.edu
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Abstract

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Stellar SiO masers are found in the atmospheres of asymptotic giant branch (AGB) stars with several maser transitions observed around 43 and 86 GHz. At least 28 SiO maser stars have been detected within ∼2 pc projected distance from Sgr A* by the Very Large Array (VLA) and Atacama Millimeter/submillimeter Array (ALMA). A subset of these masers have been studied for several decades and form the basis of the radio reference frame that anchors the reference frame for infrared stars in the Galactic Center (GC). We present new observations of the GC masers from VLA and ALMA. These new data combined with extant maser astrometry provide 3D positions, velocities, and acceleration limits. The proper motions and Doppler velocities are measured with unprecedented precision for these masers. We further demonstrate how these measurements may be used to trace the stellar and dark matter mass distributions within a few pc of Sgr A*.

Keywords

Silicon monoxide masersstellar masersGalactic Centerstellar kinematics
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S380: Cosmic Masers: Proper Motion toward the Next-Generation Large Projects , December 2022 , pp. 101 - 105
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

References

Borkar, A., Eckart, A., Straubmeier, C., et al. 2020, Multifrequency Behaviour of High Energy Cosmic Sources - XIII, 33Google Scholar
de Blok, W. J. G. 2010, Advances in Astronomy, 2010, 789293 10.1155/2010/789293CrossRefGoogle Scholar
Do, T., Hees, A., Ghez, A., et al. 2019, Science, 365, 664 10.1126/science.aav8137CrossRefGoogle Scholar
Eisenhauer, F., Genzel, R., Alexander, T., et al. 2005, ApJ, 628, 246 10.1086/430667CrossRefGoogle Scholar
Genzel, R., Eisenhauer, F., & Gillessen, S. 2010, Reviews of Modern Physics, 82, 3121 10.1103/RevModPhys.82.3121CrossRefGoogle Scholar
Ghez, A. M., Morris, M., Becklin, E. E., et al. 2000, Nature, 407, 349 10.1038/35030032CrossRefGoogle Scholar
Ghez, A. M., Salim, S., Hornstein, S. D., et al. 2005, ApJ, 620, 744 10.1086/427175CrossRefGoogle Scholar
Ghez, A. M., Salim, S., Weinberg, N. N., et al. 2008, ApJ, 689, 1044 10.1086/592738CrossRefGoogle Scholar
Gondolo, P. & Silk, J. 1999, Phys. Rev. Lett., 83, 1719 10.1103/PhysRevLett.83.1719CrossRefGoogle Scholar
Gonidakis, I., Diamond, P. J., & Kemball, A. J. 2013, MNRAS, 433, 3133 10.1093/mnras/stt954CrossRefGoogle Scholar
GRAVITY, Collaboration, Abuter, R., Amorim, A., et al. 2018, A&A, 615, L15 Google Scholar
GRAVITY, Collaboration, Abuter, R., Amorim, A., et al. 2020, A&A, 636, L5 Google Scholar
Habibi, M., Gillessen, S., Pfuhl, O., et al. 2019, ApJ (Letters), 872, L15 Google Scholar
Jewell, P. R., Snyder, L. E., Walmsley, C. M., et al. 1991, A&A, 242, 211 Google Scholar
Lacroix, T. 2018, A&A, 619, A46 Google Scholar
Li, J., An, T., Shen, Z.-Q., et al. 2010, ApJ (Letters), 720, L56 Google Scholar
Mart-Vidal, I., Vlemmings, W. H. T., Muller, S., et al. 2014, A&A, 563, A136 Google Scholar
McMillan, P. J. 2017, MNRAS, 465, 76 10.1093/mnras/stw2759CrossRefGoogle Scholar
Menten, K. M., Reid, M. J., Eckart, A., et al. 1997, ApJ (Letters), 475, L111 Google Scholar
Paine, J. & Darling, J. 2022, ApJ, 927, 181 10.3847/1538-4357/ac3a87CrossRefGoogle Scholar
Pearson, T. J. 1995, Very Long Baseline Interferometry and the VLBA NRAO Workshop No. 22, Astronomical Society of the Pacific Conference Series, 82, 267 Google Scholar
Reid, M. J., Menten, K. M., Trippe, S., et al. 2007, ApJ, 659, 378 10.1086/511744CrossRefGoogle Scholar
Sakai, S., Lu, J. R., Ghez, A., et al. 2019, ApJ, 873, 65 10.3847/1538-4357/ab0361CrossRefGoogle Scholar
Schödel, R., Ott, T., Genzel, R., et al. 2002, Nature, 419, 694 10.1038/nature01121CrossRefGoogle Scholar
Schödel, R., Gallego-Cano, E., Dong, H., et al. 2018, A&A, 609, A27 Google Scholar
Yelda, S., Lu, J. R., Ghez, A. M., et al. 2010, ApJ, 725, 331 10.1088/0004-637X/725/1/331CrossRefGoogle Scholar