Thayne Currie

Analysis of B and Be Star Populations of the Double Cluster h and chi Persei (2009)

Marsh, Amber N., McSwain, M. Virginia, Currie, Thayne

We present blue optical spectra of 92 members of h and chi Per obtained with the WIYN telescope at Kitt Peak National Observatory. From these spectra, several stellar parameters were measured for the...

The Pulsar Planets: A Test Case of Terrestrial Planet Assembly (2009)

Hansen, Brad, Shih, Hsin-Yi, Currie, Thayne

We model the assembly of planets from planetary embryos under the conditions suggested by various scenarios for the formation of the planetary system around the millisecond pulsar B1257+12. We find...

The Last Gasp of Gas Giant Planet Formation: A Spitzer Study of the 5 Myr Old Cluster NGC 2362 (2009)

Currie, Thayne, Lada, Charles J., Plavchan, Peter, Robitaille, Thomas P., Irwin, Jonathan, Kenyon, Scott J.

Expanding upon the Infrared Array Camera (IRAC) survey from Dahm & Hillenbrand, we describe Spitzer IRAC and Multiband Imaging Photometer for Spitzer observations of the populous, 5 Myr old open...

The Last Gasp of Gas Giant Planet Formation: A Spitzer Study of the 5 Myr-old Cluster NGC 2362 (2009)

Currie, Thayne, Lada, Charles J., Plavchan, Peter, Robitaille, Thomas, Irwin, Jonathan, Kenyon, Scott J.

(Abridged) We describe Spitzer IRAC and MIPS observations of the populous, 5 Myr-old open cluster NGC 2362. Early/intermediate-type confirmed/candidate cluster members either have photospheric mid-IR...

On the Semimajor Axis Distribution of Extrasolar Gas Giant Planets: Why Hot Jupiters Are Rare Around High-Mass Stars (2009)

Currie, Thayne

Based on a suite of Monte Carlo simulations, I show that a stellar-mass dependent lifetime of the gas disks from which planets form can explain the lack of hot Jupiters/close-in giant planets around...

The TEXES Survey for H2 Emission from Protoplanetary Disks (2008)

Bitner, Martin A., Richter, Matthew J., Lacy, John H., Herczeg, Gregory J., Greathouse, Thomas K., Jaffe, Daniel T., ...

We report the results of a search for pure rotational molecular hydrogen emission from the circumstellar environments of young stellar objects with disks using the Texas Echelon Cross Echelle...

A Spitzer Study of Debris Disks in the Young Nearby Cluster NGC 2232: Icy Planets Are Common around ~1.5-3 M☉ Stars (2008)

Currie, Thayne, Plavchan, Peter, Kenyon, Scott J.

We describe Spitzer IRAC and MIPS observations of the nearby 25 Myr old open cluster NGC 2232. Combining these data with ROSAT All-Sky Survey observations, proper motions, and optical...

The X-Ray Environment During the Epoch of Terrestrial Planet Formation: Chandra Observations of h Persei (2008)

Currie, Thayne, Evans, Nancy Remage, Spitzbart, Brad, Irwin, Jonathan, Wolk, Scott J., Hernandez, Jesus, ...

We describe Chandra/ACIS-I observations of the massive ~ 13--14 Myr-old cluster, h Persei, part of the famous Double Cluster (h and chi Persei) in Perseus. Combining the list of Chandra-detected...

A Spitzer Study of Debris Disks In The Young Nearby Cluster NGC 2232: Icy Planets Are Common Around ~ 1.5--3 Solar-Mass Stars (2008)

Currie, Thayne, Plavchan, Peter, Kenyon, Scott J.

We describe Spitzer IRAC and MIPS observations of the nearby 25 Myr-old open cluster NGC 2232. Combining these data with ROSAT All-Sky Survey observations, proper motions, and optical...

The Evolutionary State of Anemic Circumstellar Disks in IC 348 and the Primordial-to-Debris Disk Transition (2008)

Currie, Thayne

We investigate the evolution of $\sim$ 3 Myr-old MIPS-detected circumstellar disks in IC 348 that may be in an intermediate stage between primordial, optically-thick disks of gas/dust and debris...

The Rise and Fall of Debris Disks: MIPS Observations of h and chi Persei and the Evolution of Mid-IR Emission from Planet Formation (2007)

Currie, Thayne, Kenyon, Scott, Balog, Zoltan, Rieke, George, Bragg, Ann, Bromley, Ben

We describe Spitzer/MIPS observations of the double cluster, h and $\chi$ Persei, covering a $\sim$ 0.6 square-degree area surrounding the cores of both clusters. The data are combined with IRAC and...

Discovery of Gas Accretion Onto Stars in 13 Myr old h and chi Persei (2007)

Currie, Thayne, Kenyon, Scott, Balog, Zoltan, Bragg, Ann, Tokarz, Susan

We report the discovery of accretion disks associated with ~ 13 Myr-old intermediate/low-mass stars in h and chi Persei. Optical spectroscopy of ~ 5000 stars in these clusters and a surrounding halo...

Terrestrial Zone Debris Disk Candidates in h and chi Persei (2007)

Currie, Thayne, Kenyon, Scott J., Rieke, George, Balog, Zoltan, Bromley, Benjamin C.

We analyze 8 sources with strong mid-infrared excesses in the 13 Myr-old double cluster h and chi Persei. New optical spectra and broadband SEDs (0.36-8 mu_m) are consistent with cluster membership....

The Evolution of Protoplanetary Disks Around Millisecond Pulsars: The PSR 1257 +12 System (2007)

Currie, Thayne, Hansen, Brad

We model the evolution of protoplanetary disks surrounding millisecond pulsars, using PSR 1257+12 as a test case. Initial conditions were chosen to correspond to initial angular momenta expected for...

Spitzer/IRAC and JHKs Observations of h & chi Persei: Constraints on Protoplanetary Disk and Massive Cluster Evolution at ~ 10^{7} yr (2007)

Currie, Thayne, Balog, Zoltan, Kenyon, S. J., Rieke, G., Prato, L., Young, E. T., ...

We describe IRAC 3.6-8 mu_m observations and ground-based near-IR JHKs photometry from Mimir and 2MASS of the massive double cluster h & chi Persei complete to J=15.5 (M ~ 1.3 Msun. Within 25' of the...

Hybrid Mechanisms for Gas/Ice Giant Planet Formation (2004)

Currie, Thayne

The effects of gas pressure gradients on the motion of solid grains in the solar nebula substantially enhances the efficiency of forming protoplanetary cores in the standard core accretion model in...

HST Observations of the White Dwarf Cooling Sequence of M4 (2004)

Hansen, Brad, Richer, Harvey, Fahlman, Greg, Stetson, Peter, Brewer, James, Currie, Thayne, ...

We investigate in detail the white dwarf cooling sequence of the globular cluster Messier 4. In particular we study the influence of various systematic uncertainties, both observational and...

Hubble Space Telescope observations of the white dwarf cooling sequence of M4 (2004)

Hansen, Brad M., Richer, Harvey B., Fahlman, Greg G., Stetson, Peter B., Brewer, James, Currie, Thayne, ...

We investigate in detail the white dwarf cooling sequence of the globular cluster Messier 4. In particular, we study the influence of various systematic uncertainties, both observational and...

Hubble Space Telescope observations of the white dwarf cooling sequence of M4 (2004)

Hansen, Brad M., Richer, Harvey B., Fahlman, Greg G., Stetson, Peter B., Brewer, James, Currie, Thayne, ...

We investigate in detail the white dwarf cooling sequence of the globular cluster Messier 4. In particular, we study the influence of various systematic uncertainties, both observational and...

Hubble Space Telescope observations of the white dwarf cooling sequence of M4 (2004)

Hansen, Brad M., Richer, Harvey B., Fahlman, Greg G., Stetson, Peter B., Brewer, James, Currie, Thayne, ...

We investigate in detail the white dwarf cooling sequence of the globular cluster Messier 4. In particular, we study the influence of various systematic uncertainties, both observational and...

Hubble Space Telescope observations of the white dwarf cooling sequence of M4 (2004)

Hansen, Brad M., Richer, Harvey B., Fahlman, Greg G., Stetson, Peter B., Brewer, James, Currie, Thayne, ...

We investigate in detail the white dwarf cooling sequence of the globular cluster Messier 4. In particular, we study the influence of various systematic uncertainties, both observational and...

Hubble Space Telescope observations of the white dwarf cooling sequence of M4 (2004)

Hansen, Brad M., Richer, Harvey B., Fahlman, Greg G., Stetson, Peter B., Brewer, James, Currie, Thayne, ...

We investigate in detail the white dwarf cooling sequence of the globular cluster Messier 4. In particular, we study the influence of various systematic uncertainties, both observational and...