Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-13T05:12:17.502Z Has data issue: false hasContentIssue false
  • English
  • Français

The Debris Disk Fraction for M-dwarfs in Nearby Young Moving Groups

Published online by Cambridge University Press:  27 January 2016

Alex Binks
Alex Binks*
Affiliation:
Keele University email: a.s.binks@keele.ac.uk
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.

I present the first substantial work to measure the fraction of debris disks for M-dwarfs in nearby moving groups (MGs). Utilising the AllWISE IR catalog, 17 out of 151 MG members are found with an IR photometric excess indicative of disk structure. The M-dwarf debris disk fraction is ≲6 per cent in MGs younger than 40 Myr, and none are found in the groups older than 40 Myr. Simulations show, however, that debris disks around M-dwarfs are not present above a WISEW1-W4 colour of ~2.5, making calculating the absolute disk fractions difficult. The debris disk dissipation timescale appears to be faster than for higher-mass stars, and mechanisms such as enhanced stellar wind drag and/or photoevaporation could account for the more rapid decline of disks observed amongst M-dwarfs.

Keywords

stars: late-typestars: low-massstars: pre-main sequenceprotoplanetary disks
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S314: Young Stars & Planets Near the Sun , November 2015 , pp. 159 - 162
Copyright
Copyright © International Astronomical Union 2016 

References

Forbrich, J., Lada, C. J., Muench, A. A., & Teixeira, P. S. 2008, ApJ, 687, 1107Google Scholar
Gagné, J., Lafrenière, D., Doyon, R., Malo, L., & Artigau, É. 2014, ApJ, 783, 121Google Scholar
Lagrange, A.-M., Backman, D. E., & Artymowicz, P. 2000, Protostars and Planets IV, 0, 639Google Scholar
Lestrade, J. F., Wyatt, M. C., Bertoldi, F., Menten, K. M., & Labaigt, G. 2014, A&A, 506, 1455Google Scholar
Malo, L., Doyon, R., Lafrenière, D., Artigau, É., Gagné, J., Baron, F., & Riedel, A. 2013, ApJ, 762, 88Google Scholar
Patel, R. I., Metchev, S. A., & Heinze, A. 2014, ApJS, 212, 10CrossRefGoogle Scholar
Riaz, B. & Gizis, J. E. 2012, A&A, 548, A54Google Scholar
Schneider, A., Melis, C., & Song, I. 2012, ApJ, 754, 39Google Scholar
Simon, M., Schlieder, J. E., Constantin, A.-M., & Silverstein, M. 2012, ApJ, 751, 114Google Scholar
Wyatt, M. C., 2008 ARAA, 46, 339CrossRefGoogle Scholar