Low-mass stars in an outer field in NGC 6397

Jeremy R. Mould, Alan M. Watson, John S. Gallagher, Gilda E. Ballester, Christopher J. Burrows, Stefano Casertano, John T. Clarke, David Crisp, Richard E. Griffiths, J. Jeff Hester, John G. Hoessel, Jon A. Holtzman, Paul Scowen, Karl R. Stapelfeld, John T. Trauger, James A. Westphal

Research output: Contribution to journalArticle

7 Scopus citations


We have imaged a field 10′ from the center of the globular cluster NGC 6397 in the visible and I bands with WFPC2 on the HST. At a level which is severely limited by counting statistics in the small area so far studied, this field is richer in dwarfs with I>21.5 than the 4′.6 radius parallel field discussed by Paresce and colleagues. This indicates that the dynamical process of mass segregation is occurring in the cluster.

Original languageEnglish (US)
Pages (from-to)682-687
Number of pages6
JournalPublications of the Astronomical Society of the Pacific
Issue number726
StatePublished - Aug 1 1996


ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Mould, J. R., Watson, A. M., Gallagher, J. S., Ballester, G. E., Burrows, C. J., Casertano, S., Clarke, J. T., Crisp, D., Griffiths, R. E., Hester, J. J., Hoessel, J. G., Holtzman, J. A., Scowen, P., Stapelfeld, K. R., Trauger, J. T., & Westphal, J. A. (1996). Low-mass stars in an outer field in NGC 6397. Publications of the Astronomical Society of the Pacific, 108(726), 682-687. https://doi.org/10.1086/133785