Skip to main content Accessibility help

Habitable Worlds Around M Dwarf Stars: The CAPSCam Astrometric Planet Search

  • Alan P. Boss (a1), Alycia J. Weinberger (a2), Guillem Anglada-Escudé (a3), Ian B. Thompson (a4) and Rafael Brahm (a5)...


M dwarf stars are attractive targets in the search for habitable worlds as a result of their relative abundance and proximity, making them likely targets for future direct detection efforts. Hot super-Earths as well as gas giants have already been detected around a number of early M dwarfs, and the former appear to be the high-mass end of the population of rocky, terrestrial exoplanets. The Carnegie Astrometric Planet Search (CAPS) program has been underway since March 2007, searching ~ 100 nearby late M, L, and T dwarfs for gas giant planets on orbits wide enough for habitable worlds to orbit interior to them. The CAPSCam-N camera on the 2.5-m du Pont telescope at the Las Campanas Observatory has demonstrated the ability to detect planets as low in mass as Saturn orbiting at several AU around late M dwarfs within 15 pc. Over the next decade, the CAPS program will provide new constraints on the planetary census around late M dwarf stars, and hence on the suitability of these nearby planetary systems for supporting life.



Hide All
Anglada-Escudé, G., et al. 2012a, ApJ, 746, 37
Anglada-Escudé, G., et al. 2012b, ApJL, 751, L16
Bonfils, X., et al. 2011, A&A, 549, A109
Borucki, W., et al. 2011, ApJ, 736, 19
Boss, A. P., et al. 2009, PASP, 121, 1218
Bouchy, F., et al. 2009, A&A, 496, 527
Cassan, A., et al. 2012, Nature, 481, 167
Gatewood, G. D., et al. 1980, Icarus, 41, 205
Lo Curto, G., et al. 2010, A&A, 512, A48
Mayor, M., et al. 2009, A&A, 507, 487
Muterspaugh, M. W., et al. 2011, AJ, 140, 1657
Tarter, J., et al. 2007, Astrobiology, 7, 30
Vogt, S. S., et al. 2010, ApJ, 723, 954
Weinberger, A. J., et al. 2013, ApJ 762 article id. 118
Weinberger, A. J., et al. 2013, ApJ 767 article id. 96
MathJax is a JavaScript display engine for mathematics. For more information see



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