Contact Information
1002 W. Green St.
Urbana, IL 61801
Research Description
My group studies the cutest stars - big and cuddly protostars only 10,000 to 100,000 years old, before they turn punky and begin to fuse hydrogen into helium in their core in about 1 million years. These stars are surrounded by envelopes of dust and gas that give us direct evidence of how stars form and how early planetary systems are going to form. Lately, we have been most excited about 1) how circumstellar disks evolve from the earliest stages and what impact the disk has on the evolution of planets via dust grain growth, and 2) the polarization of light from the circumstellar disk which arises from three mechanisms, aligned dust grains via magnetic field, aligned dust grains from radiation, and/or scattering.
The sources we study are usually deeply embedded in gas and dust, which means that they can only be observed at wavelengths longer than 10 microns. Thus, our group typically utilizes ALMA, SOFIA, and VLA observations to peer into stellar nurseries.
However, lately I am also considering variability of sources in LSST.
Current Graduate Students:
Past Graduate Students:
Shiya Wang (2008)
Yu-Shao "Jerry" Shiao (2008)
Woojin Kwon (2009)
Jonathan Seale (2010)
Hsin-Fang Chiang (2011)
I-Jen "Katherine" Lee (2013)
Ian Stephens (2013)
Dominique Segura-Cox (2017)
Erin Cox (2018)
Courses Taught
External Links
Recent Publications
Lopez-Rodriguez, E., Dowell, C. D., Jones, T. J., Harper, D. A., Berthoud, M., Chuss, D., Dale, D. A., Guerra, J. A., Hamilton, R. T., Looney, L. W., Michail, J. M., Nikutta, R., Novak, G., Santos, F. P., Sheth, K., Siah, J., Staguhn, J., Stephens, I. W., Tassis, K., ... Zweibel, E. G. (2020). SOFIA/HAWC+ Traces the Magnetic Fields in NGC 1068. Astrophysical Journal, 888(2), [66]. https://doi.org/10.3847/1538-4357/ab5849
Tobin, J. J., Sheehan, P. D., Megeath, S. T., Díaz-Rodríguez, A. K., Offner, S. S. R., Murillo, N. M., Van 'T Hoff, M. L. R., Van Dishoeck, E. F., Osorio, M., Anglada, G., Furlan, E., Stutz, A. M., Reynolds, N., Karnath, N., Fischer, W. J., Persson, M., Looney, L. W., Li, Z. Y., Stephens, I., ... Wyrowski, F. (2020). The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. II. A Statistical Characterization of Class 0 and Class i Protostellar Disks. Astrophysical Journal, 890(2), [130]. https://doi.org/10.3847/1538-4357/ab6f64
Chen, C. Y., Storm, S., Li, Z. Y., Mundy, L. G., Frayer, D., Li, J., Church, S., Friesen, R., Harris, A. I., Looney, L. W., Offner, S., Ostriker, E. C., Pineda, J. E., Tobin, J., & Chen, H. H. H. (2019). Investigating the complex velocity structures within dense molecular cloud cores with GBT-Argus. Monthly Notices of the Royal Astronomical Society, 490(1), 527-539. https://doi.org/10.1093/mnras/stz2633
Chuss, D. T., Andersson, B. G., Bally, J., Dotson, J. L., Darren Dowell, C., Guerra, J. A., Harper, D. A., Houde, M., Jay Jones, T., Lazarian, A., Lopez Rodriguez, E., Michail, J. M., Morris, M. R., Novak, G., Siah, J., Staguhn, J., Vaillancourt, J. E., Volpert, C. G., Werner, M., ... Ward-Thompson, D. (2019). HAWC+/SOFIA Multiwavelength Polarimetric Observations of OMC-1. Astrophysical Journal, 872(2), [187]. https://doi.org/10.3847/1538-4357/aafd37
Harrison, R. E., Looney, L. W., Stephens, I. W., Li, Z. Y., Yang, H., Kataoka, A., Harris, R. J., Kwon, W., Muto, T., & Momose, M. (2019). Dust Polarization in Four Protoplanetary Disks at 3 mm: Further Evidence of Multiple Origins. Astrophysical Journal Letters, 877(1), [L2]. https://doi.org/10.3847/2041-8213/ab1e46
