Lucas A. Cieza

Assistant Astronomer PhD, University of Texas at Austin, 2007 lcieza at ifa.hawaii.edu Structure and Evolution of Circumstellar Disks Star and Planet Formation Angular Momentum Evolution of PMS Stars

Honors and Awards

• 2007-2010 Spitzer Space Telescope Postdoctoral Fellowship
• 2006 Donald Harrington Dissertation Fellowship (UT, Austin)
• 2006 David Benfield Scholarship in Astronomy (UT, Austin)
• 2004 Edmonds, Jr. Memorial Fellowship in Astronomy (UT, Austin)
• 2004 Graduate Student Second Year Research Defense Award (UT, Austin)

Large Collaborations

• C2D Spitzer Legacy Project
• Gould Belt Spitzer Legacy Project
• DIGIT Herschel Key Project

Selected Publications

The Masses of Transition Circumstellar Disks: Observational Support for Photoevaporation Models 
L. A. Cieza, J. J. Swift, G. S. Mathews, & J. P. Williams 
The Astrophysical Journal Letters, 686,  L115-L118 (2008) 

Spitzer Observations of the Hyades: Circumstellar Debris Disks at 625 Myr of Age
L. A. Cieza, W. D. Cochran, & J.-C. Augereau
The Astrophysical Journal, 679, 720-731 (2008)

The Spitzer Survey of Interstellar Clouds in the Gould Belt. I. IC 5146 Observed With IRAC and MIPS 
P. M. Harvey et al.
The Astrophysical Journal, 680,  495-516 (2008) 

The Spitzer Gould Belt Survey of Large Nearby Interstellar Clouds: Discovery of a Dense Embedded Cluster in the Serpens-Aquila Rift
R. A. Gutermuth et al.
The Astrophysical Journal, 673, L151-L154 (2008)

The Evolution of Primordial Circumstellar Disks  (invited review)
L. A. Cieza 
New Horizons in Astronomy, Frank N. Bash Symposium 2007, ASP Conference Series, Vol. 393, 35-49 (2008) 

Testing the Disk Regulation Paradigm with Spitzer Observations. II. A Clear Signature of Star-Disk Interaction in NGC 2264 and the Orion Nebula Cluster
L. Cieza & N. Baliber
The Astrophysical Journal, 671, 605-615 (2007)

The Spitzer c2d Survey of Weak-Line T Tauri Stars. II. New Constraints on the Timescale for Planet Building
L. Cieza et al.
The Astrophysical Journal, 667, 308-328 (2007)

Spitzer Limits on Dust Emission and Optical Gas Absorption Variability around Nearby Stars with Edge-on Circumstellar Disk Signatures
S. Redfield, J. E. Kessler-Silacci, & L. A. Cieza
The Astrophysical Journal, 661, 944-971 (2007)

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. IV. Lupus Observed with MIPS
N. L. Chapman et al.
The Astrophysical Journal, 667, 288-302 (2007)

Testing the Disk Regulation Paradigm with Spitzer Observations. I. Rotation Periods of Pre-Main-Sequence Stars in the IC 348 Cluster
L. Cieza & N. Baliber
The Astrophysical Journal, 649, 862-878 (2006)

The SPITZER c2d Survey of Weak-Line T Tauri Stars. I. Initial Results
D. L. Padgett et al.
The Astrophysical Journal, 645, 1283-1296 (2006)

Young, Low-Mass Brown Dwarfs with Mid-Infrared Excesses
K. N. Allers, J. E. Kessler-Silacci, L. A. Cieza, & D. T. Jaffe
The Astrophysical Journal, 644, 364-377 (2006)

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. III. Perseus Observed with IRAC
J. K. Jørgensen et al.
The Astrophysical Journal, 645, 1246-1263 (2006)

Evidence for J- and H-Band Excess in Classical T Tauri Stars and the Implications for Disk Structure and Estimated Ages
L. Cieza, , J. E. Kessler-Silacci, D. T. Jaffe, P. M. Harvey, & N. J. Evans II
The Astrophysical Journal, 635, 422-441 (2005)

A "Starless Core" that Isn't: Detection of a Source in the L1014 Dense Core with the Spitzer Space Telescope
C. H. Young et al.
The Astrophysical Journal Supplement Series, 154, 396-401 (2004)