Skip to main content
SpringerLink
Log in

Estimating the Galactic Coronal Density via Ram-Pressure Stripping from Dwarf Satellites

  • Conference paper
  • First Online:
The Labyrinth of Star Formation

Part of the book series: Astrophysics and Space Science Proceedings ((ASSSP,volume 36))

  • 1738 Accesses

Abstract

Cosmological simulations and theories of galaxy formation predict that the Milky Way should be embedded in an extended hot gaseous halo or corona. To date, a definitive detection of such a corona in the Milky Way remains elusive. We have attempted to estimate the density of the Milky Way’s cosmological corona using the effect that it has on the surrounding population of dwarf galaxies. We have considered two dSphs close to the Galaxy: Sextans and Carina. Assuming that they have lost all their gas during the last pericentric passage via ram-pressure stripping, we were able to estimate the average density (n ∼ 2 ⋅ 10−4 cm−3) of the corona at a distance of ∼ 70 kpc from the Milky Way. If we consider an isothermal profile and extrapolate it at large radii, the corona could contain a significant fraction of the missing baryons associated to the Milky Way.

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

Access this chapter

Log in via an institution
Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 169.00
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 219.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 219.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. Anderson M. E., Bregman J. N., Astrophys. J. 714, 320 (2010)

    Article  ADS  Google Scholar 

  2. Grcevich J., Putman M. E., Astrophys. J. 696, 358 (2009)

    ADS  Google Scholar 

  3. Lux H., Read J. I., Lake G., Mon. Not. Roy. Astron. Soc. 406, 2312 (2010)

    Article  ADS  Google Scholar 

  4. Wilkinson M. I., Evans N. W., Mon. Not. Roy. Astron. Soc. 310, 645 (1999)

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Max-Planck Institut für Astrophysik, Karl-Schwarzschild Strasse 1, 85748, Garching, Germany

    A. Gatto

  2. Department of Physics and Astronomy, University of Bologna, via Berti Pichat 6/2, 40127, Bologna, Italy

    F. Fraternali

  3. Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118, Heidelberg, Germany

    F. Marinacci

  4. University of Surrey, Guildford, GU2 7XH, Surrey, UK

    J. Read

  5. School of Physics and Astronomy, University of Nottingham, University Park, NG7 2RD, Nottingham, UK

    H. Lux

Authors
  1. A. Gatto
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. F. Fraternali
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. F. Marinacci
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. J. Read
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. H. Lux
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to A. Gatto .

Editor information

Editors and Affiliations

  1. Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy, University of Central Lancashire, Preston, United Kingdom

    Dimitris Stamatellos

  2. Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom

    Simon Goodwin

  3. Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy, University of Central Lancashire, Preston, United Kingdom

    Derek Ward-Thompson

Rights and permissions

Reprints and permissions

Copyright information

© 2014 Springer International Publishing Switzerland

About this paper

Cite this paper

Gatto, A., Fraternali, F., Marinacci, F., Read, J., Lux, H. (2014). Estimating the Galactic Coronal Density via Ram-Pressure Stripping from Dwarf Satellites. In: Stamatellos, D., Goodwin, S., Ward-Thompson, D. (eds) The Labyrinth of Star Formation. Astrophysics and Space Science Proceedings, vol 36. Springer, Cham. https://doi.org/10.1007/978-3-319-03041-8_31

Download citation

Publish with us

Policies and ethics

Search

Navigation