I also teach an outdoor astronomy laboratory (ASTR 1210) class each semester. Every other year I also teach a senior level course on observational astrophysics (ASTR 4330) that gives students the opportunity to calibrate and analyze archival optical (imaging and spectroscopic) and radio interferometric data.
Much of my research centers on multi-wavelength observational studies of star formation in strongly interacting systems in the low-z universe. Using data collected using the Very Large Array and the newly commissioned Atacama Large Millimeter Array in tandem with optical and infrared data, I try to better understand the processes by which galaxies convert their gas supply into stars, and conversely, the processes that act to switch-off or ``quench'' star formation on large scales in these same objects. In collaboration with Gordon Stacey's group at Cornell University, we are exploring the rate and evolution of star formation in the more distant universe using sub-millimeter spectroscopy with ZEUS-2. I am also interested in the nature of faint radio sources with exceedingly faint (or no) optical counterparts.
J. Higdon, S. Higdon, S. Martin-Ruiz, and R. Rand, 2015
Molecular Gas and Star Formation in the Cartwheel, ApJ, 814, L1.
S. Higdon,J. Higdon, B. Smith, and M. Hancock, 2014
Star Formation and the ISM in Nearby Tidal Streams (SAINTS), ApJ, 787, 103.
C. Ferkinhoff, D. Brisbin, S. Parshley, T. Nikola, G. Stacey, J. Schoenwald, J. Higdon, S. Higdon, et al., 2014
ZEUS-2. First-Light Observations of a Highly Lensed Local-ULIRG Analog at High-z, ApJ, 780, 142
J. Higdon, S. Higdon, and R. Rand, 2011
Wheels of Fire.IV: Star Formation and the Neutral ISM in AM0644-741, ApJ 739, 97
J. Higdon, S. Higdon, S. Willner, P. Eisenhardt et al., 2008
A Comparison of Radio and Infrared Optically ``Invisible'' Source Populations in Bootes, ApJ 688, 885
S. Higdon, L. Armus, J. Higdon, B. Soifer, and H. Spoom, 2006
A Spitzer Space Telescope Survey of Warm Molecular Hydrogen in ULIRGs, ApJ 648, 323
J. Houck, D. Weedman, S. Higdon, J. Higdon, et al., 2005
Discovering High-z Obscured Sources With Spectroscopy From The Spitzer Space Telescope, ApJ 622, 10
J. Higdon and J. Wallin, 2003
A Minor-Merger Interpretation for NGC 1097's Optical Jets, ApJ 585, 281
F. Briggs, O. Moller, J. Higdon, N. Trentham, and E. Ramirez-Ruiz, 2001
Did VV 29 Collide with a Dark-Matter Halo? A&A 380, 418
R. Rand, S. Lard, and J. Higdon, 1999
The Eastern Arm of M83 Revisited: High-Resolution Mapping of 12CO(1-0) Emission, ApJ 513, 720
J. Higdon, R. Buta, and G. Purcell, 1998
Optical and HI Observations of NGC 5850: A Victim of a High-Speed Encounter?, AJ 115, 80
J. Higdon, 1996
Wheels of Fire. II: Neutral Hydrogen in the Cartwheel Ring Galaxy, ApJ 467, 241