Skip to main content Accessibility help
×
Home
Hostname: page-component-559fc8cf4f-7x8lp Total loading time: 0.36 Render date: 2021-03-04T04:38:40.641Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false, "newCitedByModal": true }

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
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Canberra, ACT 2611, Australia email: christoph.federrath@anu.edu.au
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: christoph.federrath@anu.edu.au
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
Corresponding
Rights & Permissions[Opens in a new window]

Abstract

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.

Type
Contributed Papers
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 CrossRefGoogle Scholar
Balbus, S. A. & Hawley, J. F. 1991, ApJ, 376, 214 CrossRefGoogle Scholar
Balsara, D. S., Kim, J., Mac Low, M., & Mathews, G. J. 2004, ApJ, 617, 339 CrossRefGoogle 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 CrossRefGoogle 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 CrossRefGoogle 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 CrossRefGoogle Scholar
Cunningham, A. J., Frank, A., Carroll, J., Blackman, E. G., & Quillen, A. C. 2009, ApJ, 692, 816 CrossRefGoogle 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 CrossRefGoogle Scholar
Dobbs, C. L., Glover, S. C. O., Clark, P. C., & Klessen, R. S. 2008, MNRAS, 389, 1097 CrossRefGoogle Scholar
Dotson, J. L., Vaillancourt, J. E., Kirby, L., et al. 2010, ApJ, 186, 406 CrossRefGoogle Scholar
Elmegreen, B. G. & Burkert, A. 2010, ApJ, 712, 294 CrossRefGoogle Scholar
Elmegreen, B. G. & Scalo, J. 2004, ARAA, 42, 211 CrossRefGoogle Scholar
Federrath, C. & Banerjee, S. 2015, MNRAS, 448, 3297 CrossRefGoogle Scholar
Federrath, C. & Klessen, R. S. 2012, ApJ, 761, 156 CrossRefGoogle Scholar
Federrath, C., Klessen, R. S., & Schmidt, W. 2008, ApJ, 688, L79 CrossRefGoogle 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 CrossRefGoogle 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 CrossRefGoogle 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 CrossRefGoogle 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 CrossRefGoogle 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 CrossRefGoogle Scholar
Kruijssen, J. M. D., Longmore, S. N., Elmegreen, B. G., et al. 2014, MNRAS, 440, 3370 CrossRefGoogle Scholar
Krumholz, M. R. & Kruijssen, J. M. D. 2015, MNRAS, 453, 739 CrossRefGoogle Scholar
Krumholz, M. R., Matzner, C. D., & McKee, C. F. 2006, ApJ, 653, 361 CrossRefGoogle Scholar
Lee, E. J., Chang, P., & Murray, N. 2015, ApJ, 800, 49 CrossRefGoogle Scholar
Lee, E. J., Murray, N., & Rahman, M. 2012, ApJ, 752, 146 CrossRefGoogle Scholar
Longmore, S. N., Bally, J., Testi, L., et al. 2013, MNRAS, 429, 987 CrossRefGoogle Scholar
Mac Low, M.-M. 1999, ApJ, 524, 169 CrossRefGoogle 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 CrossRefGoogle Scholar
McKee, C. F. 1989, ApJ, 345, 782 CrossRefGoogle Scholar
McKee, C. F. & Ostriker, E. C. 2007, ARAA, 45, 565 CrossRefGoogle Scholar
Molina, F. Z., Glover, S. C. O., Federrath, C., & Klessen, R. S. 2012, MNRAS, 423, 2680 CrossRefGoogle Scholar
Nakamura, F. & Li, Z. 2008, ApJ, 687, 354 CrossRefGoogle Scholar
Nolan, C. A., Federrath, C., & Sutherland, R. S. 2015, MNRAS, 451, 1380 CrossRefGoogle Scholar
Norman, C. & Silk, J. 1980, ApJ, 238, 158 CrossRefGoogle Scholar
Offner, S. S. R. & Arce, H. G. 2014, ApJ, 784, 61 CrossRefGoogle 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 CrossRefGoogle Scholar
Peters, T., Banerjee, R., Klessen, R. S., & Mac Low, M. 2011, ApJ, 729, 72 CrossRefGoogle Scholar
Peters, T., Banerjee, R., Klessen, R. S., et al. 2010, ApJ, 711, 1017 CrossRefGoogle 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 CrossRefGoogle Scholar
Piontek, R. A. & Ostriker, E. C. 2007, ApJ, 663, 183 CrossRefGoogle Scholar
Plunkett, A. L., Arce, H. G., Corder, S. A., et al. 2015, ApJ, 803, 22 CrossRefGoogle Scholar
Plunkett, A. L., Arce, H. G., Corder, S. A., et al. 2013, ApJ, 774, 22 CrossRefGoogle Scholar
Price, D. J., Federrath, C., & Brunt, C. M. 2011, ApJ, 727, L21 CrossRefGoogle Scholar
Rathborne, J. M., Longmore, S. N., Jackson, J. M., et al. 2014, ApJ, 795, L25 CrossRefGoogle Scholar
Rathborne, J. M., Longmore, S. N., Jackson, J. M., et al. 2015, ApJ, 802, 125 CrossRefGoogle Scholar
Robertson, B. & Goldreich, P. 2012, ApJ, 750, L31 CrossRefGoogle Scholar
Scalo, J. M. & Pumphrey, W. A. 1982, ApJ, 258, L29 CrossRefGoogle Scholar
Stone, J. M., Ostriker, E. C., & Gammie, C. F. 1998, ApJ, 508, L99 CrossRefGoogle Scholar
Tamburro, D., Rix, H.-W., Leroy, A. K., et al. 2009, AJ, 137, 4424 CrossRefGoogle Scholar
Tasker, E. J. & Tan, J. C. 2009, ApJ, 700, 358 CrossRefGoogle Scholar
Vazquez-Semadeni, E., Canto, J., & Lizano, S. 1998, ApJ, 492, 596 CrossRefGoogle Scholar
Vázquez-Semadeni, E., Colín, P., Gómez, G. C., Ballesteros-Paredes, J., & Watson, A. W. 2010, ApJ, 715, 1302 CrossRefGoogle Scholar
Wang, P., Li, Z.-Y., Abel, T., & Nakamura, F. 2010, ApJ, 709, 27 CrossRefGoogle Scholar

Altmetric attention score

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 120 *
View data table for this chart

* Views captured on Cambridge Core between 09th February 2017 - 4th March 2021. This data will be updated every 24 hours.

Access

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

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

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

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

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

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

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *