Hostname: page-component-8448b6f56d-42gr6 Total loading time: 0 Render date: 2024-04-23T14:56:09.955Z Has data issue: false hasContentIssue false
  • English
  • Français

ALMA observations of the Orion Integral Filament: evidence for fibers in a massive cloud

Published online by Cambridge University Press:  13 January 2020

Alvaro Hacar ,
Mario Tafalla ,
Jan Forbrich  and
Josefa Grossschedl Open the ORCID record for Josefa Grossschedl [Opens in a new window]
Alvaro Hacar
Affiliation:
Leiden Observatory, Leiden University, P.O. Box 9513, 2300-RA Leiden, The Netherlands email: hacar@strw.leidenuniv.nl
Mario Tafalla
Affiliation:
Observatorio Astronomico Nacional (IGN), C/ Alfonso XII, 3, E-28014, Madrid, Spain
Jan Forbrich
Affiliation:
Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK
Josefa Grossschedl
Affiliation:
University of Vienna, Türkenschanzstrasse 17, A-1180 Vienna, Austria
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The connection between low- and high-mass filaments is a matter of strong debate. In order to bridge these two filamentary regimes, we have investigated the internal structure of the Integral Filament in Orion using ALMA observations of the N2H+ (1-0) emission line in Band 3 in combination with previous single-dish data. Our ALMA mosaics, the largest of its kind carried out so-far in local clouds, reveal the presence of multiple sonic-like fibers inside this massive filament. In combination with the identification of fibers in regions such as Taurus, Musca, and Perseus, the first unambiguous detection of fibers in Orion highlights the importance of these gas substructures as the fundamental building blocks of both low- and high-mass filaments.

Keywords

stars: formationISM: kinematics and dynamicsISM: cloudsradio lines: ISM
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 51 - 55
Copyright
© International Astronomical Union 2020 

References

André, P., Di Francesco, J., Ward-Thompson, D., et al. 2014, Protostars and Planets VI, 27 Google Scholar
Arzoumanian, D., André, P., Didelon, P., et al. 2011, A&A, 529, L6 Google Scholar
Fernández-López, M., Arce, H. G., Looney, L., et al. 2014, ApJL, 790, L19 CrossRefGoogle Scholar
Hacar, A., Tafalla, M., Kauffmann, J., & Kovács, A. 2013, A&A, 554, A55 Google Scholar
Hacar, A., Kainulainen, J., Tafalla, M., Beuther, H., & Alves, J. 2016, A&A, 587, A97 Google Scholar
Hacar, A., Alves, J., Tafalla, M., & Goicoechea, J. R. 2017a, A&A, 602, L2 Google Scholar
Hacar, A., Tafalla, M., & Alves, J. 2017b, A&A, 606, A123 Google Scholar
Hacar, A., Tafalla, M., Forbrich, J., et al. 2018, A&A, 610, A77 Google Scholar
Henshaw, J. D., Caselli, P., Fontani, F., Jiménez-Serra, I., & Tan, J. C. 2014, MNRAS, 440, 2860 CrossRefGoogle Scholar
Johnstone, D., & Bally, J. 1999, ApJL, 510, L49 CrossRefGoogle Scholar
Matthews, B. C., McPhee, C. A., Fissel, L. M., & Curran, R. L. 2009, ApJS, 182, 143 CrossRefGoogle Scholar
Menten, K. M., Reid, M. J., Forbrich, J., & Brunthaler, A. 2007, A&A, 474, 515 Google Scholar
Smith, R. J., Glover, S. C. O., & Klessen, R. S. 2014, MNRAS, 445, 2900 CrossRefGoogle Scholar
Tafalla, M., & Hacar, A. 2015, A&A, 574, A104 Google Scholar
Ward-Thompson, D., Pattle, K., Bastien, P., et al. 2017, ApJ, 842, 66 CrossRefGoogle Scholar