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Mapping the dark matter of NGC 2974: Combination of stellar & cold gas kinematics

Published online by Cambridge University Press:  14 May 2020

M. Yang Open the ORCID record for M. Yang [Opens in a new window] ,
L. Zhu ,
A. Weijmans ,
G. van de Ven Open the ORCID record for G. van de Ven [Opens in a new window] ,
N. F. Boardman ,
R. Morganti Open the ORCID record for R. Morganti [Opens in a new window]  and
T. A. Oosterloo
M. Yang
Affiliation:
School of Physics and Astronomy, Univ. of St Andrews, North Haugh, St Andrews, KY16 9SS, UK email: my38@st-andrews.ac.uk
L. Zhu
Affiliation:
Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai200030, China
A. Weijmans
Affiliation:
School of Physics and Astronomy, Univ. of St Andrews, North Haugh, St Andrews, KY16 9SS, UK email: my38@st-andrews.ac.uk
G. van de Ven
Affiliation:
Department of Astrophysics, Univ. of Vienna, Türkenschanzstrasse 17, 1180 Vienna, Austria ESO, Karl-Schwarzschild-Str 2, D-85748 Garching bei Munchen, Germany
N. F. Boardman
Affiliation:
Department of Physics and Astronomy, Univ. of Utah, Salt Lake City, UT84112, USA
R. Morganti
Affiliation:
ASTRON, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands Kapteyn Astronomical Institute, Univ. of Groningen, PO Box 800, NL-9700 AV Groningen, the Netherlands
T. A. Oosterloo
Affiliation:
ASTRON, Postbus 2, NL-7990 AA Dwingeloo, the Netherlands Kapteyn Astronomical Institute, Univ. of Groningen, PO Box 800, NL-9700 AV Groningen, the Netherlands
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Abstract

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We present a new method to combine cold gas kinematics with the stellar kinematics modelled with the Schwarzschild orbit-superposition technique, and its application to the lenticular galaxy NGC 2974. The combination of stellar and cold gas kinematics significantly improves the constraints on the measured dark matter profile: assuming a generalised NFW halo profile, we find a cuspy inner halo slope for NGC 2974.

Keywords

galaxies: structuregalaxies: kinematics and dynamicsgalaxies: halosdark matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S353: Galactic Dynamics in the Era of Large Surveys , June 2019 , pp. 253 - 254
Copyright
© International Astronomical Union 2020

References

Chambers, K. C., Magnier, E. A., Metcalfe, N., Flewelling, H. A., Huber, M. E., Waters, C. Z., Denneau, L., Draper, P. W., Farrow, D., Finkbeiner, D. P. & others 2016, arXivGoogle Scholar
Emsellem, E., Cappellari, M., Peletier, R. F., McDermid, R. M., Bacon, R., Bureau, M., Copin, Y., Davies, R. L., Krajnović, D., Kuntschner, H. & others 2003, MNRAS, 352, 721CrossRefGoogle Scholar
van den Bosch, R. C. E., van de Ven, G., Verolme, E. K., Cappellari, M. & de Zeeuw, P. T., MNRAS, 385, 647CrossRefGoogle Scholar
Weijmans, A., Krajnović, D., van de Ven, G., Oosterloo, T. A., Morganti, R., & de Zeeuw, P. T., MNRAS, 383, 134310.1111/j.1365-2966.2007.12680.xCrossRefGoogle Scholar
Yang, M., Zhu, L., Weijmans, A., van de Ven, G., Boardman, N. F., Morganti, R., & Oosterloo, T. A., 2020, MNRAS, 491, 4221CrossRefGoogle Scholar
Zhao, H. 1996, MNRAS, 278, 488CrossRefGoogle Scholar
Zhu, L., Romanowsky, A. J., van de Ven, G., Long, R. J., Watkins, L. L., Pota, V., Napolitano, N. R., Forbes, D. A., Brodie, J., & Foster, C. 2016, MNRAS, 462, 400110.1093/mnras/stw1931CrossRefGoogle Scholar