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The link between solenoidal turbulence and slow star formation in G0.253+0.016

Published online by Cambridge University Press:  09 February 2017

C. Federrath Open the ORCID record for C. Federrath [Opens in a new window] ,
J. M. Rathborne ,
S. N. Longmore ,
J. M. D. Kruijssen ,
J. Bally ,
Y. Contreras ,
R. M. Crocker ,
G. Garay ,
J. M. Jackson  and
L. Testi
...Show all authors
C. Federrath
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia email: [email protected]
J. M. Rathborne
Affiliation:
CSIRO Astronomy and Space Science, P.O. Box 76, Epping NSW, 1710, Australia
S. N. Longmore
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, United Kingdom
J. M. D. Kruijssen
Affiliation:
Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, Mönchhofstraße 12-14, 69120 Heidelberg, Germany Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
J. Bally
Affiliation:
CASA, University of Colorado, 389-UCB, Boulder, CO 80309, USA
Y. Contreras
Affiliation:
Leiden Observatory, Leiden University, PO Box 9513, NL-2300 RA Leiden, the Netherlands
R. M. Crocker
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia email: [email protected]
G. Garay
Affiliation:
Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago, Chile
J. M. Jackson
Affiliation:
Institute for Astrophysical Research, Boston University, Boston, MA 02215, USA
L. Testi
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Straße 2, D-85748 Garching bei München, Germany INAF-Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy Excellence Cluster Universe, Boltzmannstraße 2, D-85748, Garching, Germany
A. J. Walsh
Affiliation:
International Centre for Radio Astronomy Research, Curtin University, GPO Box U1987, Perth WA 6845, Australia
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Abstract

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Star formation in the Galactic disc is primarily controlled by gravity, turbulence, and magnetic fields. It is not clear that this also applies to star formation near the Galactic Centre. Here we determine the turbulence and star formation in the CMZ cloud G0.253+0.016. Using maps of 3 mm dust emission and HNCO intensity-weighted velocity obtained with ALMA, we measure the volume-density variance σρ /ρ 0=1.3±0.5 and turbulent Mach number $\mathcal{M}$ = 11±3. Combining these with turbulence simulations to constrain the plasma β = 0.34±0.35, we reconstruct the turbulence driving parameter b=0.22±0.12 in G0.253+0.016. This low value of b indicates solenoidal (divergence-free) driving of the turbulence in G0.253+0.016. By contrast, typical clouds in the Milky Way disc and spiral arms have a significant compressive (curl-free) driving component (b > 0.4). We speculate that shear causes the solenoidal driving in G0.253+0.016 and show that this may reduce the star formation rate by a factor of 7 compared to nearby clouds.

Keywords

Galaxy: centreISM: cloudsmagnetic fieldsstars: formationturbulence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S322: The Multi-Messenger Astrophysics of the Galactic Centre , July 2016 , pp. 123 - 128
Copyright
Copyright © International Astronomical Union 2017 

References

Arce, H. G., Borkin, M. A., Goodman, A. A., Pineda, J. E., & Beaumont, C. N. 2011, ApJ, 742, 105 Google Scholar
Balbus, S. A. & Hawley, J. F. 1991, ApJ, 376, 214 Google Scholar
Balsara, D. S., Kim, J., Mac Low, M., & Mathews, G. J. 2004, ApJ, 617, 339 Google Scholar
Banerjee, R., Klessen, R. S., & Fendt, C. 2007, ApJ, 668, 1028 CrossRefGoogle Scholar
Benincasa, S. M., Tasker, E. J., Pudritz, R. E., & Wadsley, J. 2013, ApJ, 776, 23 Google Scholar
Breitschwerdt, D., de Avillez, M. A., Fuchs, B., & Dettbarn, C. 2009, SSRv, 143, 263 Google Scholar
Brunt, C. M. 2010, A&A, 513, A67 Google Scholar
Brunt, C. M., Federrath, C., & Price, D. J. 2010a, MNRAS, 405, L56 Google Scholar
Brunt, C. M., Federrath, C., & Price, D. J. 2010b, MNRAS, 403, 1507 CrossRefGoogle Scholar
Carroll, J. J., Frank, A., & Blackman, E. G. 2010, ApJ, 722, 145 Google Scholar
Cunningham, A. J., Frank, A., Carroll, J., Blackman, E. G., & Quillen, A. C. 2009, ApJ, 692, 816 Google Scholar
Cunningham, A. J., Klein, R. I., Krumholz, M. R., & McKee, C. F. 2011, ApJ, 740, 107 CrossRefGoogle Scholar
de Avillez, M. A. & Breitschwerdt, D. 2005, A&A, 436, 585 Google Scholar
Dobbs, C. L. & Bonnell, I. A. 2008, MNRAS, 385, 1893 Google Scholar
Dobbs, C. L., Glover, S. C. O., Clark, P. C., & Klessen, R. S. 2008, MNRAS, 389, 1097 Google Scholar
Dotson, J. L., Vaillancourt, J. E., Kirby, L., et al. 2010, ApJ, 186, 406 Google Scholar
Elmegreen, B. G. & Burkert, A. 2010, ApJ, 712, 294 CrossRefGoogle Scholar
Elmegreen, B. G. & Scalo, J. 2004, ARAA, 42, 211 Google Scholar
Federrath, C. & Banerjee, S. 2015, MNRAS, 448, 3297 CrossRefGoogle Scholar
Federrath, C. & Klessen, R. S. 2012, ApJ, 761, 156 Google Scholar
Federrath, C., Klessen, R. S., & Schmidt, W. 2008, ApJ, 688, L79 Google Scholar
Federrath, C., Roman-Duval, J., Klessen, R. S., Schmidt, W., & Mac Low, M. 2010, A&A, 512, A81 Google Scholar
Federrath, C., Schrön, M., Banerjee, R., & Klessen, R. S. 2014, ApJ, 790, 128 CrossRefGoogle Scholar
Federrath, C., Sur, S., Schleicher, D. R. G., Banerjee, R., & Klessen, R. S. 2011, ApJ, 731, 62 Google Scholar
Federrath, C., Rathborne, J. M., Longmore, S. N., et al. 2016, ApJ, accepted (arXiv:1609.05911)Google Scholar
Ginsburg, A., Federrath, C., & Darling, J. 2013, ApJ, 779, 50 Google Scholar
Ginsburg, A., Henkel, C., Ao, Y., et al. 2016, A&A, 586, A50 Google Scholar
Goldbaum, N. J., Krumholz, M. R., Matzner, C. D., & McKee, C. F. 2011, ApJ, 738, 101 CrossRefGoogle Scholar
Gritschneder, M., Naab, T., Walch, S., Burkert, A., & Heitsch, F. 2009, ApJ, 694, L26 Google Scholar
Hennebelle, P. & Falgarone, E. 2012, A&A Rev., 20, 55 Google Scholar
Hoyle, F. 1953, ApJ, 118, 513 CrossRefGoogle Scholar
Johnston, K. G., Beuther, H., Linz, H., et al. 2014, A&A, 568, A56 Google Scholar
Kainulainen, J., Federrath, C., & Henning, T. 2014, Science, 344, 183 Google Scholar
Klessen, R. S. & Hennebelle, P. 2010, A&A, 520, A17 Google Scholar
Konstandin, L., Girichidis, P., Federrath, C., & Klessen, R. S. 2012, ApJ, 761, 149 Google Scholar
Kruijssen, J. M. D., Longmore, S. N., Elmegreen, B. G., et al. 2014, MNRAS, 440, 3370 Google Scholar
Krumholz, M. R. & Kruijssen, J. M. D. 2015, MNRAS, 453, 739 Google Scholar
Krumholz, M. R., Matzner, C. D., & McKee, C. F. 2006, ApJ, 653, 361 Google Scholar
Lee, E. J., Chang, P., & Murray, N. 2015, ApJ, 800, 49 Google Scholar
Lee, E. J., Murray, N., & Rahman, M. 2012, ApJ, 752, 146 Google Scholar
Longmore, S. N., Bally, J., Testi, L., et al. 2013, MNRAS, 429, 987 Google Scholar
Mac Low, M.-M. 1999, ApJ, 524, 169 Google Scholar
Mac Low, M.-M. & Klessen, R. S. 2004, RvMP, 76, 125 Google Scholar
Mac Low, M.-M., Klessen, R. S., Burkert, A., & Smith, M. D. 1998, PhRvL, 80, 2754 Google Scholar
Matzner, C. D. & McKee, C. F. 2000, ApJ, 545, 364 Google Scholar
McKee, C. F. 1989, ApJ, 345, 782 Google Scholar
McKee, C. F. & Ostriker, E. C. 2007, ARAA, 45, 565 Google Scholar
Molina, F. Z., Glover, S. C. O., Federrath, C., & Klessen, R. S. 2012, MNRAS, 423, 2680 Google Scholar
Nakamura, F. & Li, Z. 2008, ApJ, 687, 354 Google Scholar
Nolan, C. A., Federrath, C., & Sutherland, R. S. 2015, MNRAS, 451, 1380 Google Scholar
Norman, C. & Silk, J. 1980, ApJ, 238, 158 Google Scholar
Offner, S. S. R. & Arce, H. G. 2014, ApJ, 784, 61 Google Scholar
Padoan, P., Federrath, C., Chabrier, G., et al. 2014, Protostars and Planets VI, 77Google Scholar
Padoan, P., Jones, B. J. T., & Nordlund, A. P. 1997, ApJ, 474, 730 Google Scholar
Peters, T., Banerjee, R., Klessen, R. S., & Mac Low, M. 2011, ApJ, 729, 72 Google Scholar
Peters, T., Banerjee, R., Klessen, R. S., et al. 2010, ApJ, 711, 1017 Google Scholar
Pillai, T., Kauffmann, J., Tan, J. C., et al. 2015, ApJ, 799, 74 CrossRefGoogle Scholar
Piontek, R. A. & Ostriker, E. C. 2004, ApJ, 601, 905 Google Scholar
Piontek, R. A. & Ostriker, E. C. 2007, ApJ, 663, 183 Google Scholar
Plunkett, A. L., Arce, H. G., Corder, S. A., et al. 2015, ApJ, 803, 22 Google Scholar
Plunkett, A. L., Arce, H. G., Corder, S. A., et al. 2013, ApJ, 774, 22 Google Scholar
Price, D. J., Federrath, C., & Brunt, C. M. 2011, ApJ, 727, L21 Google Scholar
Rathborne, J. M., Longmore, S. N., Jackson, J. M., et al. 2014, ApJ, 795, L25 Google Scholar
Rathborne, J. M., Longmore, S. N., Jackson, J. M., et al. 2015, ApJ, 802, 125 Google Scholar
Robertson, B. & Goldreich, P. 2012, ApJ, 750, L31 Google Scholar
Scalo, J. M. & Pumphrey, W. A. 1982, ApJ, 258, L29 Google Scholar
Stone, J. M., Ostriker, E. C., & Gammie, C. F. 1998, ApJ, 508, L99 Google Scholar
Tamburro, D., Rix, H.-W., Leroy, A. K., et al. 2009, AJ, 137, 4424 Google Scholar
Tasker, E. J. & Tan, J. C. 2009, ApJ, 700, 358 Google Scholar
Vazquez-Semadeni, E., Canto, J., & Lizano, S. 1998, ApJ, 492, 596 Google Scholar
Vázquez-Semadeni, E., Colín, P., Gómez, G. C., Ballesteros-Paredes, J., & Watson, A. W. 2010, ApJ, 715, 1302 Google Scholar
Wang, P., Li, Z.-Y., Abel, T., & Nakamura, F. 2010, ApJ, 709, 27 Google Scholar