Publications 2007

• Hines, D. C., et al. 2007
  The Moth: An Unusual Circumstellar Structure Associated with HD 61005
  ApJL, 671, 165  (Stellar/Galactic/Observational)
  
  Grady, C. A. et al. 2007
  The Disk and Environment of a Young Vega Analog: HD 169142
  ApJ, 665, 1391 . (Stellar/Galactic/Observational)
  
  Pascucci, I., et al. 2007
  Detection of  Emission from Young Circumstellar Disks
  ApJ, 663, 383 . (Stellar/Galactic/Observational)
  
  Hines, D. C. et al. 2007
  The Moth: An Unusual Circumstellar Structure Associated with HD 61005
  lyot. Conf., 32 . (Stellar/Galactic/Observational)
  
  Moro-Martín, A. et al. 2007
  Are Debris Disks and Massive Planets Correlated?
  ApJ, 658, 1312
  
  

Ongoing Research

Kim, in collaboration with M. R. Meyer, D. C. Hines (Space Science Institute),
Ilaria Pascucci, Daniel Apai, and the rest of the FEPS Spitzer Legacy team
members in various institutions, is participating in studying the Formation and
Evolution of Planetary Systems (FEPS; PI. M. R. Meyer;
http://feps.as.arizona.edu/) using Spitzer Space Telescope. Kim has led and
participated in a number of studies within the FEPS program. J. S. Kim has been
also leading the Spitzer GO2 and GO3 data analysis of cold debris disks similar
to the Kuiper Belt in our solar system. (Stellar/Galactic/Observational)

Kim, in collaborate with F. M. Walter (SUNY Stony Brook), W. H. Sherry (NOAO),
and S. J. Wolk (CfA) is investigating triggered low mass star formation in an
intermediate radiation environment associated with cometary globule (CG)
complexes in the Gum Nebula. Bright-rimmed cometary clouds are evaporating
molecular clouds due to UV radiation from OB stars. This is part of a
comparative study to probe star formation in an intermediate radiation
environment, which will be compared to strong radiation environments (e.g.,
Orion Nebula Cluster) and weak radiation environments (e.g., Taurus). We have
obtained X-ray, mid-IR, optical imaging and spectroscopic data using the
XMM-Newton, Spitzer Space Telescope, CTIO 0.9m, CTIO 4m, and Magellan 6.5m
telescopes for two star forming regions associated with cometary globule
complexes in the Gum Nebula. The team has identified groups of young stars
associated with evaporating cometary clouds at age range 1-5 Myr at mass ranges
between 0.1 to 1.2 solar masses. The project is on-going, and more data for
statistical studies are being obtained. (Stellar/Galactic/Observational)

Kim, in collaboration with W. H. Sherry (NOAO), M. R. Meyer, and C. Peruta
(Mich. State Univ.), has led an optical imaging survey of the W3, W4, W5 star
forming regions using the 90Prime imager at the Bok telescope. These regions are
suggested to have experienced sequential and triggered star formation. The
bright-rimmed clouds illuminated by massive OB stars in the W3, W4, W5 HII
region contain numerous young stars. This program is also to investigate the
role environment (both radiation and stellar number density) play on star
formation. The survey is almost completed, and the data analysis to identify
young stars associated with these star forming regions is on-going.
(Stellar/Galactic/Observational)

Kim is collaborating with B. Wilking (Univ. of Missouri), M. R. Meyer, C. Peruta
(Mich. State Univ.), and W. H Sherry to study star formation in the Serpens star
forming region. We have used optical imaging data obtained using the 90 Prime
wide-field imager at the Bok telescope, X-ray data from the XMM-Newton, and
HYDRA data taken at the WIYN 4m telescope for analysis. The X-ray sources are
found to be young stars with masses above the hydrogen-burning limit to 0.6
solar mass, and the age range between 0.3-10Myr. (Stellar/Galactic/Observational)

Kim, in collaboration with W. H. Sherry (NOAO), J. Muzerolle, and X. Fan,
obtained imaging data of sigma Orionis cluster and the W3 star forming region
using the LBT/LBC camera during the science demonstration time. Our deep U and V
band data are expected to detect low mass objects, below hydrogen burning limit.
Our goal is to measure mass accretion rates for those objects with circumstellar
disks and the intrinsic UV emission from the photosphere or chromosphere for
diskless objects. (Stellar/Galactic/Observational)