Peer Reviewed Journal Articles

Smith R. L., Pontoppidan K. M., Young E. D., Morris M. R., Herczeg G. J. and van Dishoeck E. F. Signatures of carbon isotope ice-gas partitioning toward solar-type protostars (The Astrophysical Journal, in revision).

Young E. D., Gounelle M., Smith R. L., Pontoppidan K. M., and Morris M. R. (2011) Astronomical oxygen isotopic evidence for supernova enrichment of the solar system birth environment by propagating star formation. The Astrophysical Journal 729, 43.

Smith R. L., Pontoppidan K. M., Young E. D., Morris M. R. and van Dishoeck E. F. (2009) High-precision C17O, C18O and C16O measurements in young stellar objects: analogues for CO self-shielding in the early solar system. The Astrophysical Journal 701, 163-175.

Pumbwe L., Chang A., Smith R. L. and Wexler H. M. (2007) BmeRABC5 is a multidrug efflux system that can confer metronidazole resistance in Bacteroides fragilis. Microb Drug Resist. Summer;13(2): 96-101.

Pumbwe L., Chang A., Smith R. L. and Wexler H. M. (2006) Clinical significance of overexpression of multiple RND-family efflux pumps in Bacteroides fragilis isolates. J Antimicrob Chemother. Sep; 58(3): 543-8.

Pumbwe L., Ueda O., Yoshimura F., Chang A., Smith R. L., Wexler H.M. (2006) Bacteroides fragilis BmeABC efflux systems additively confer intrinsic antimicrobial resistance.J Antimicrob Chemother. Jul; 58(1): 37-46.

Popular Articles

Pontoppidan, K. M., van Dishoeck, E. F., Blake, G. A., Smith, R., et al. 2011. Planet forming regions at the highest spectral and spatial resolution with VLT–CRIRES.  The Messenger, 143, 32-36.

Published Proceedings (first author)

Smith, R. L., Pontoppidan, K. M., Young, E. D., and Morris, M. R., 2011. (Talk) Observational signatures of carbon isotope ice-gas fractionation towards solar-type protostars. 42nd Lunar & Planetary Science Conference, March 7-11, The Woodlands, Texas , LPI Contribution 1608, 1281.

Smith, R. L., Pontoppidan, K. M., Young, E. D., and Morris, M. R., 2010. (Talk) New 12CO/13CO observations in young stellar objects and molecular clouds: implications for 12C/13C in the early solar nebula. Meteoritics & Planetary Science (Supplement), 45, No. 5381, A193 (73rd Annual Meteoritical Society Meeting, New York City, July 26-30).

Smith, R. L., Pontoppidan, K. M., Young, E. D., and Morris, M. R., 2010. New insights on the origin of the solar system 12C/13C ratio using protostellar observations and radiative transfer modeling. Disks, Meteorites, Planetesimals workshop, New York, N.Y., LPI, No. 6012.

Smith, R. L., Pontoppidan, K. M., Young, E. D., and Morris, M. R., 2010. (Talk) Observations of high 12CO/13CO toward protostars and implications for the origin of the 12C/13C ratio in the solar system. 41st Lunar & Planetary Science Conference, March 1-5, The Woodlands, Texas, LPI Contribution 1533, 2254.

Smith, R. L., Pontoppidan, K. M., Herczeg, G. J., and Young, E. D., 2010. (Talk) Observations of unusual carbon isotope fractionation in protostars using VLT/CRIRES. American Astronomical Society Meeting 215, January 3-7, Washington, D.C., Bulletin of the American Astronomical Society, Vol. 42, No. 369.06, 560.

Smith, R. L., Pontoppidan, K. M., and Herczeg, G. J., 2009. (Talk) VLT-CRIRES observations of 12C/13C fractionation in protostellar envelopes. Geochimica et Cosmochimica Acta Supplement, 73, A1240 ( Goldschmidt conference, June 21-29, Davos, Switzerland).

Smith, R. L., Pontoppidan, K. M., and Herczeg, G. J., 2009. (Poster) Observations of 12C/13C fractionation in embedded protostars using VLT-CRIRES. American Astronomical Society Meeting 214, June 7-11, Pasadena, CA, Bulletin of the American Astronomical Society, Vol. 41, No. 422.05, 691.

Smith R. L., Pontoppidan K. M., Young E. D., Morris M. R., and van Dishoeck E. F., 2009. (Talk) High-precision C17O, C18O and C16O measurements in young stellar objects: analogues for CO self-shielding in the early solar system. 40th Lunar & Planetary Science Conference, March 23-27, The Woodlands, Texas, Lunar and Planetary Science XL, No. 1471.

Smith R. L., Pontoppidan K. M., Young E. D., Morris M. R., and van Dishoeck E. F., 2007. (Poster) Detection of rare CO isotopologues in protostellar disks using CRIRES and NIRSPEC. American Astronomical Society Meeting 211, January 7-11, Austin, TX, Bulletin of the American Astronomical Society, Vol. 39, No. 50.01, 811. 

Smith R. L., Pontoppidan K. M., Young E. D., and Morris M. R., 2007. (Talk) Detection of rare CO isotopologues in a protostellar disk: towards an astronomical approach to understanding oxygen isotopes in the solar system. 38th Lunar & Planetary Science Conference, March 12-16, League City, TX, Lunar and Planetary Science XXXVIII, LPI Contribution No. 1338, 2293.

Smith R. L., Pontoppidan K. M., Young E. D., Morris M. R., and van Dishoeck, E. F., 2007. (Poster) Detection of rare CO isotopologues in protostellar disks: an infrared investigation of molecular self-shielding. Workshop on the Chronology of Meteorites and the Early Solar System, November 5-7, Kauai, Hawaii, LPI Contribution No. 1374, 158-159.

Published Proceedings (contributing author)

Young, E. D., Pontoppidan, K. M., Smith, R. L., Morris, M. R., and Gounelle, M., 2010. The oxygen isotopic case for supernova enrichment of the solar system birth environment. 41st Lunar and Planetary Science Conference, March 1-5, The Woodlands, TX, LPI Contribution No. 1533, 1550.

Herczeg, G. J., van Dishoeck, E. F., Brown, J. M., Pontoppidan, K. M., and Smith, R. L., 2010. CO fundamental emission from disks around embedded objects. American Astronomical Society, Meeting 215, January 3-7, Washington, D. C., Bulletin of the American Astronomical Society, Vol. 42, No. 345.06, 452.

Young, E. D., Gounelle, M, Smith, R. L., Morris, M. R., and Pontoppidan, K. M., 2010. Astronomical oxygen isotopic evidence for supernova enrichment of the solar system birth environment. American Astronomical Society Meeting 215, January 3-7, Washington, D. C., Bulletin of the American Astronomical Society, Vol. 42, No. 334.01, 433.

Young, E. D., Gounelle, M, Smith, R. L., Morris, M. R., and Pontoppidan, K. M., 2009. Astronomical oxygen isotopic evidence for supernova pollution of the solar system birth environment. Geochimica et Cosmochimica Acta Supplement, 73, A1488 (Goldschmidt conference, June 21-29, Davos, Switzerland).

Young, E. D., Gounelle, M, Smith, R. L., Morris, M. R., and Pontoppidan, K. M., 2009. The oxygen isotopic composition of the solar system in a Galactic context: new results for CO in young stellar objects and implications for the birth environment of the solar system. 40th Lunar and Planetary Science Conference, March 23-27, The Woodlands, TX, Lunar and Planetary Science XL, No. 1967.

Young, E. D., Gounelle, M, Smith, R. L., Morris, M. R., and Pontoppidan, K. M. 2008.   Solar system oxygen isotope ratios result from pollution by Type II supernovae. 39th Lunar and Planetary Science Conference, March 10-14, League City, TX, Lunar and Planetary Science XXXIX, No. 1391, 1329.