Jump to ContentJump to Main Navigation
Show Summary Details
More options …

Open Astronomy

formerly Baltic Astronomy

Editor-in-Chief: Barbuy, Beatriz


IMPACT FACTOR 2017 (Baltic Astronomy): 0.417
5-year IMPACT FACTOR (Baltic Astronomy): 0.486

CiteScore 2017: 0.16

SCImago Journal Rank (SJR) 2017: 0.131
Source Normalized Impact per Paper (SNIP) 2017: 0.109

ICV 2017: 121.03

Open Access
Online
ISSN
2543-6376
See all formats and pricing
More options …
Volume 26, Issue 1

Issues

Parameters of Six Selected Galactic Potential Models

Anisa Bajkova / Vadim Bobylev
Published Online: 2017-11-09 | DOI: https://doi.org/10.1515/astro-2017-0016

Abstract

This paper is devoted to the refinement of the parameters of the six three-component (bulge, disk, halo) axisymmetric Galactic gravitational potential models on the basis of modern data on circular velocities of Galactic objects located at distances up to 200 kpc from the Galactic center. In all models the bulge and disk are described by the Miyamoto-Nagai expressions. To describe the halo, the models of Allen-Santillán (I), Wilkinson-Evans (II), Navarro- Frenk-White (III), Binney (IV), Plummer (V), and Hernquist (VI) are used. The sought-for parameters of potential models are determined by fitting the model rotation curves to the measured velocities, taking into account restrictions on the local dynamical matter density p⊙ - 0.1M⊙ pc−3 and the vertical force |Kz=1.1|/2πG = 77M⊙ pc−2. A comparative analysis of the refined potential models is made and for each of the models the estimates of a number of the Galactic characteristics are presented.

Keywords: Galaxy: kinematics and dynamics; structure

References

  • Allen, C., Martos, M. 1986, Revista Mexicana Astron. Astrof., 13, 137-147Google Scholar

  • Allen, C., Santillán, A. 1991, Revista Mexicana Astron. Astrofis., 22, 255-263Google Scholar

  • Bajkova, A.T. 1992, A&AT, 1, 313-320Google Scholar

  • Bajkova, A.T., Bobylev, V.V. 2016, Astron. Lett. 42, 567-582Google Scholar

  • Bajkova, A.T., Bobylev, V.V., 2017, Astron. Rep. 61, 727-738Google Scholar

  • Battaglia, G., Helmi, A., Morrison, H., et al. 2005, MNRAS, 364, 433-442Google Scholar

  • Bhattacharjee, P., Chaudhury, S., Kundu, S., et al. 2013, Phys. Rev. D, 87, id. 083525Google Scholar

  • Bhattacharjee, P., Chaudhury, S., Kundu, S. 2014, ApJ, 785, 63, 13ppGoogle Scholar

  • Binney, J. 1981, MNRAS, 196, 455-467Google Scholar

  • Binney J., Tremaine S., 1987, Galactic Dynamics. Princeton Univ. Press, Princeton, NJGoogle Scholar

  • Bobylev, V.V., Bajkova, A.T. 2013, Astron. Lett. 39, 809-818Google Scholar

  • Bobylev, V.V., Bajkova, A.T., Gromov, A.O. 2017, Astron. Lett. 43, 241-251Google Scholar

  • Boylan-Kolchin, M., Bullock J. S., Sohn S. T., et al. 2013, ApJ, 768, 140, 11ppGoogle Scholar

  • Burton, W.B., Gordon, M.A. 1978, A&A, 63, 7-27Google Scholar

  • Carlesi, E., Hoffman, Y., Sorce, J.G., et al. 2017, MNRAS, 465, 4886-4894Google Scholar

  • Deason, A.J., Belokurov, V., Evans, N.W., et al. 2012a, MNRAS, 424, L44-L48Google Scholar

  • Deason, A.J., Belokurov, V., Evans, N.W., et al. 2012b, MNRAS, 425, 2840-2853Google Scholar

  • Dehnen, W., Binney, J. 1998, MNRAS, 294, 429-438Google Scholar

  • Eadie, G.M., Harris, W.E., Widrow, L.M. 2015, ApJ, 806, 54, 14ppGoogle Scholar

  • Eadie, G.M., Springford, A., Harris, W.E., 2017, ApJ, 835, 167, 9ppGoogle Scholar

  • Gibbons, S., Belokurov, V., Evans, N.W. 2014, MNRAS, 445, 3788-3802Google Scholar

  • Gnedin, O.Y., Brown, W.R., Geller, M.J., et al. 2010, ApJ, 720, L108-L112Google Scholar

  • Hernquist, L. 1990, ApJ, 356, 359-364Google Scholar

  • Irrgang, A., Wilcox, B., Tucker, E., et al. 2013, A&A, 549, A137, 13ppGoogle Scholar

  • Kafle, R.R., Sharma, S., Lewis, G.F., et al. 2012, ApJ, 761, 98, 17ppGoogle Scholar

  • Karachentsev, I.D., Kashibadze, O.G., Makarov, D.I., et al. 2009, MNRAS, 393, 1265-1274Google Scholar

  • Kuzmin, G.G., Veltmann, Ü.-I.K. 1973, Publ. Tartu Astrofiz. Obs., 40, 281-323Google Scholar

  • McConnachie, A.W. 2012, AJ, 144, 4, 36ppGoogle Scholar

  • McMillan, P.J. 2011, MNRAS, 414, 2446-2457Google Scholar

  • Miyamoto M., Nagai, R. 1975, PASJ, 27, 533-543Google Scholar

  • Navarro, J.F., Frenk, C.S., White, S.D.M. 1997, ApJ, 490, 493-508Google Scholar

  • Plummer, H.C. 1911, MNRAS, 71, 460-470Google Scholar

  • Reid, M.J., Menten, K.M., Brunthaler, A., et al. 2014, ApJ, 783, 130, 14ppGoogle Scholar

  • Sofue, Y. 2009, PASJ, 61, 153-161Google Scholar

  • Sofue, Y. 2012, PASJ, 64, 75, 8ppGoogle Scholar

  • Sofue, Y. 2015, PASJ, 67, 75,9ppGoogle Scholar

  • Sohn, S.T., Besla, G., van der Marel, R.P., et al. 2013, ApJ, 768, 139, 21ppGoogle Scholar

  • Watkins, L.L., Evans, N.W., An, J.H. 2010, MNRAS, 406, 264-278Google Scholar

  • Wilkinson M.I., Evans, N.W. 1999, MNRAS, 310, 645-662Google Scholar

  • Xue, X.X., Rix, H.-W., Zhao, G., et al. 2008, ApJ, 684, 1143-1158 Google Scholar

  • The Hipparcos and Tycho Catalogues. 1997, ESA SP-1200Google Scholar

About the article

Received: 2017-08-22

Accepted: 2017-09-25

Published Online: 2017-11-09

Published in Print: 2017-11-27


Citation Information: Open Astronomy, Volume 26, Issue 1, Pages 72–79, ISSN (Online) 2543-6376, DOI: https://doi.org/10.1515/astro-2017-0016.

Export Citation

© 2017. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License. BY-NC-ND 4.0

Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

Comments (0)

Please log in or register to comment.
Log in