Rachel L. Akeson

Research scientist at the NASA Exoplanet Science Institute (NexScI)
Infrared Processing and Analysis Center at Caltech
MS 100-22
Pasadena CA 91125
phone: 626-395-1812
fax: 626-397-7181
email: rla at ipac.caltech.edu 


Research topics

Optical and infrared interferometry

I am the NASA Exoplanet Science Institute (NExScI) Deputy Director and the Keck Interferometer Project Scientist. NExScI provides the science data center for projects in NASA Exoplanet Exploration program, including: the Keck Interferometer and Kepler. NexScI also runs the Sagan Fellowship and Workshop program, administrates the NASA Keck time and supports development of NStED, the NASA Star and Exoplanet Database.
 
I also use infrared interferometers in the study of young stellar objects and debris disks.  

  • R. L. Akeson et al., 2011, Radial Structure in the TW Hya Circumstellar Disk, ApJ, 728, 96
  • R. L. Akeson et al., 2009, Dust in the inner regions of debris disks around A stars , ApJ, 691, 1896
  • R. L. Akeson, W.K.M. Rice, A.F. Boden, A.I. Sargent, J.M. Carpenter, G. Bryden The circumbinary disk of HD 98800 B: Evidence for disk warping to appear in the Astrophysical Journal, ApJ, 670, 1240
  • R.L. Akeson, A.F. Boden, J.D. Monnier, R. Millan-Gabet, C. Beichman, J. Beletic, N. Calvet, L. Hartmann, L. Hillenbrand, C. Koresko, A. Sargent, and A. Tannirkulam, 2005, Keck Interferometer observations of classical and weak line T Tauri stars ApJ, 635, 1173
  • R. L. Akeson, C. H. Walker, K. Wood, J. A. Eisner, E. Scire, B. Penprase, D. R. Ciardi, G. T. van Belle, B. Whitney, and J. E. Bjorkman, Observations and Modeling of the Inner Disk Region of T Tauri Stars ApJ 622 440
  • Colavita, M., Akeson, R., Wizinowich, P., Shao, M. et al. Observations of DG Tauri with the Keck Interferometer, 2003,  ApJL, 592 L83
  • R.L. Akeson, D.R. Ciardi, G.T. van Belle, and M.J. Creech-Eakman Constraints on circumstellar disk parameters from multi-wavelength observations: T Tau and SU Aur., 2002,  ApJ, 566 1124
  • R.L. Akeson, D.R. Ciardi, G.T. van Belle, M.J. Creech-Eakman and E.A. Lada Infrared Interferometric Observations of Young Stellar Objects, 2000,  ApJ 543 313
  •  Millimeter interferometry

    High Resolution Millimeter Imaging of Pre-Main Sequence Sources

  • E.L.N. Jensen and R.L. Akeson, Protoplanetary Disk Mass Distribution in Young Binaries, 2003, ApJ 584 875
  • R.L. Akeson, D.W. Koerner, and E.L.N. Jensen. A circumstellar dust disk around T Tau N: Sub-arcsecond imaging at lambda = 3mm, 1998, ApJ 505, 358
  • Millimeter Interferometric Polarization

    This project involved the installation of adjustable polarizers on the Owens Valley Radio Observatory millimeter array. Used as quarter-wave plates, these polarizers can measured the linearly polarized emission at 3 mm. My primary interest is in observations of linear polarized emission from magnetically aligned dust grains in the envelopes of young stellar objects. Current work on the project includes expanding the polarization capability to 1mm.
     
  • Weintraub, D., Goodman, A., and Akeson, R, 1999,  Polarized  Light from Star Forming Regions, Protostars and Planets IV

  •  
  • R.L. Akeson, J.E. Carlstrom, J.A. Phillips, and D.P. Woody. Millimeter Interferometric Imaging of the Young Stellar Object NGC 1333/IRAS 4A, 1996, ApJL, 456, 45.
  • R.L. Akeson and J.E. Carlstrom, Magnetic Field Structure in Protostellar Envelopes, 1997, ApJ, 491, 254 .
  • Ultracompact HII Regions

  • R.L. Akeson and J.E. Carlstrom, Lifetimes of Ultracompact HII Regions: High-Resolution Methyl Cyanide Observations, 1996, ApJ, 470, 528.



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