Skip to main content Accessibility help
×
Home

The late-type stellar density profile in the Galactic Center: A statistical approach

  • S. N. Chappell (a1), A. M. Ghez (a1), T. Do (a1), G. D. Martinez (a1), S. Yelda (a1), B. N. Sitarski (a1), J. R. Lu (a2) and M. R. Morris (a1)...

Abstract

The late-type stellar population in the Galactic Center was first predicted to reside in a dynamically relaxed cusp (power law slope ranging from 3/2 to 7/4). However, other works - which rely on models to correct for projection effects - have suggested a flat distribution instead. The need for this correction is due to the lack of information regarding the line-of-sight distances. With a two decade long baseline in astrometric measurements, we are now able to measure significant projected radial accelerations, six of which are newly reported here, which directly constrain line-of-sight distances. Here we present a statistical approach to take advantage of this information and more accurately constrain the shape of the radial density profile of the late-type stellar population in the Galactic Center.

    • 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 late-type stellar density profile in the Galactic Center: A statistical approach
      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 late-type stellar density profile in the Galactic Center: A statistical approach
      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 late-type stellar density profile in the Galactic Center: A statistical approach
      Available formats
      ×

Copyright

References

Hide All
Bahcall, J. N. & Wolf, R. A. 1976, ApJ, 209, 214
Bahcall, J. N. & Wolf, R. A. 1977, ApJ, 216, 883
Bartko, H., Martins, F., Trippe, S., et al. 2010, ApJ, 708, 834
Buchholz, R. M., Schödel, R., & Eckart, A. 2009, A&A, 499, 483
Do, T., Ghez, A. M., Morris, M. R., et al. 2009, ApJ, 703, 1323
Do, T., Lu, J. R., Ghez, A. M., et al. 2013, ApJ, 764, 154
Ghez, A. M., Salim, S., Weinberg, N. N., et al. 2008, ApJ 689 10441062
Schödel, R., Najarro, F., Muzic, K., & Eckart, A. 2010, A&A, 511, A18
Yelda, S., Ghez, A. M., Lu, J. R., et al. 2014, ApJ, 783, 131
MathJax
MathJax is a JavaScript display engine for mathematics. For more information see http://www.mathjax.org.

Keywords

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed