Skip to main content
SpringerLink
Log in

The physical conditions in the BHR71 outflows

  • Original Article
  • Published:
Astrophysics and Space Science Aims and scope Submit manuscript

Abstract

Highly-collimated outflows are believed to be the earliest stage in outflow evolution, so their study is essential for understanding the processes driving outflows. The BHR71 Bok globule is known to harbour such a highly-collimated outflow, which is powered by a protostar belonging to a protobinary system. Using the APEX telescope on Chajnantor, we mapped the BHR71 highly-collimated outflow in CO(3-2), and observed several bright points of the outflow in the molecular transitions CO(4-3), CO(7-6), 13CO(3-2), C18O(3-2), CH3OH(7-6) and H2CO(4-3). We use an LVG code to characterise the temperature enhancements in these regions. These observations are particularly interesting for investigating the interaction of collimated outflows with the ambient molecular cloud. In our CO(3-2) map, the second outflow driven by IRS2, which is the second source of the binary system, is completely revealed and shown to be bipolar. We also measure temperature enhancements in the lobes. The CO and methanol LVG modelling points to temperatures between 30 and 50 K in the two lobes. The methanol emission in the southern lobe bright knot is barely resolved with the APEX single-dish. ALMA will thus be a central tool to study the shock chemistry in these regions.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Bourke, T.L.: Astrophys. J. 554, L91 (2001)

    Article  ADS  Google Scholar 

  • Bourke, T.L., Garay, G., Lehtinen, K.K., Koehnenkamp, I., Launhardt, R., Nyman, L., May, J., Robinson, G., Hyland, A.R.: Astrophys. J. 476, 781 (1997)

    Article  ADS  Google Scholar 

  • Cabrit, S., Bertout, C.: Astrophys. J. 307, 313 (1986)

    Article  ADS  Google Scholar 

  • Froebrich, D.: Astrophys. J. Suppl. Ser. 156, 169 (2005)

    Article  ADS  Google Scholar 

  • Garay, G., Köhnenkamp, I., Bourke, T.L., Rodríguez, L.F., Lehtinen, K.K.: Astrophys. J. 509, 768 (1998)

    Article  ADS  Google Scholar 

  • Güsten, R., Nyman, L.Å., Schilke, P., Menten, K., Cesarsky, C., Booth, R.: Astron. Astrophys. 454, L13 (2006)

    Article  ADS  Google Scholar 

  • Heyminck, S., Kasemann, C., Güsten, R., de Lange, G., Graf, U.U.: Astron. Astrophys. 454, L21 (2006)

    Article  ADS  Google Scholar 

  • Klein, B., Philipp, S.D., Krämer, I., Kasemann, C., Güsten, R., Menten, K.M.: Astron. Astrophys. 454, L29 (2006)

    Article  ADS  Google Scholar 

  • Leurini, S., Schilke, P., Menten, K.M., Flower, D.R., Pottage, J.T., Xu, L.-H.: Astron. Astrophys. 422, 573 (2004)

    Article  ADS  Google Scholar 

  • Myers, P.C., Mardones, D.: Star formation with the infrared space observatory. In: ASP Conf. Ser., vol. 132, pp. 173–182 (1998)

  • Parise, B., Belloche, A., Leurini, S., Schilke, P., Wyrowski, F., Güsten, R.: Astron. Astrophys. 454, L79 (2006)

    Article  ADS  Google Scholar 

  • Risacher, C., Vassilev, V., Monje, R., Lapkin, I., Belitsky, V., Pavolotsky, A., Pantaleev, M., Bergman, P., Ferm, S.-E., Sundin, E., Svensson, M., Fredrixon, M., Meledin, D., Gunnarsson, L.-G., Hagström, M., Johansson, L.-Å., Olberg, M., Booth, R., Olofsson, H., Nyman, L.-Å.: Astron. Astrophys. 454, L17 (2006)

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. MPIfR, Auf dem Hügel 69, 53121, Bonn, Germany

    Bérengère Parise, Arnaud Belloche & Peter Schilke

  2. ESO, Karl Schwarzschild Str. 2, 85748, Garching bei München, Germany

    Silvia Leurini

Authors
  1. Bérengère Parise
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Arnaud Belloche
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Silvia Leurini
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Peter Schilke
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Bérengère Parise.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Parise, B., Belloche, A., Leurini, S. et al. The physical conditions in the BHR71 outflows. Astrophys Space Sci 313, 73–76 (2008). https://doi.org/10.1007/s10509-007-9588-3

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10509-007-9588-3

Keywords

Search

Navigation