This site contains information from the Apache Point Observatory Diffuse Interstellar Band (DIB) collaboration. It currently consists of links to our publications and an archive of our published data products, and it will ultimately contain links to published versions of the complete DIB Database compiled by this collaboration.

Here are links to our published papers, and associated data products: The Behavior of Selected Diffuse Interstellar Bands with Molecular Fraction in Diffuse Atomic and Molecular Clouds Haoyu Fan, Daniel E. Welty, Donald G. York, Paule Sonnetrucker, Julie A. Dahlstrom, Noah Baskes, Scott D. Friedman, Lewis M. Hobbs, Zihao Jiang, Brian Rachford, Theodore P. Snow, Reid Sherman, Gang Zhao, (2017) Astrophysical Journal, (2017) Diffuse Atomic and Molecular Gas in the Interstellar Medium of M80 toward SN 2014J Ritchey, A.M., Welty, D.E., Dahlstrom, J.A., York, D.G., (2014) Astropyhsical Journal, 799, 197. (2014) Diffuse Interstellar Bands versus Known Atomic and Molecular Species in the Interstellar Medium of M82 toward SN 2014J Welty, D.E., Ritchey, A.M. Dahlstrom, J.A., York, D.G., Astrophysical Journal 792, 106. (2014) Geometry and velocity structure of HD 44179's bipolar jet Thomas, J., Witt, A., Aufedenberg, J.P., Bjorkman, J.E., Dahlstrom, J.A., Hobbs, L.M., York, D.G>, MNRAS 403, (2013) Anomalous Diffuse Interstellar Bands in the Spectrum of Herschel 36. I. Observations of Rotationally Excited CH and CH+ Absorption and Strong, Extended Redward Wings on Several DIBs, J. Dahlstrom, D. G. York, D. E. Welty, T. Oka, L. M. Hobbs, S. Johnson, S. D. Friedman, Z. Jiang, B. L. Rachford, R. A. Sherman, T. P. Snow, and P. Sonnentrucker, Astrophysical Journal, 773, 41 (2013) Anomalous Diffuse Interstellar Bands in the Spectrum of Herschel 36.II. Analysis of Radiatively Excited CH+, CH, and Diffuse Interstellar Bands, J. Dahlstrom, D. G. York, D. E. Welty, T. Oka, L. M. Hobbs, S. Johnson, S. D. Friedman, Z. Jiang, B. L. Rachford, R. A. Sherman, T. P. Snow, and P. Sonnentrucker, Astrophysical Journal, 773, 42 (2013) Observation of Anomalous Molecular Excitation and Profiles of Diffuse Interstellar Bands toward the Star Herschel Dahlstrom,J., Welty, D., York, D.G., Johnson, S.D., Jiang, Z., Friedman, S., Hobbs, L., Rachford, B.,Sonnentrucker, P., Snow, T.P Astrophysical Journal (2012) Studies of Diffuse Interstellar Bands V. Pairwise Correlations of Eight Strong DIBs and Neutral Hydrogen, Molecular Hydrogen, and Color Excess, S. D. Friedman, D. G. York, B. J. McCall, J. Dahlstrom, P. Sonnentrucker, D. E. Welty, M. M. Drosback, L. M. Hobbs, B. L. Rachford, and T. P. Snow, Astrophysical Journal, 727, 33 (2011) The nature of the Na I D-lines in the Red Rectangle Thomas, J.D., Witt, A .N., Aufdenberg, J.P., Bjorkman, J.e>, Dahlstrom, J.A.,Federman, S.R.,Hobbs, L.M.,Vijh, U.P., York, D.G., Astrophysical Journal 417, 2860 (2011) The search for the Diffuse Interstellar Bands and other molecules in Comets O'Malia, K.K.J., Thorbun, J., Hammgergren, M., Snow, T.P. Dembicky, J., Hobbs, L.M., and York, D.G., Astrophysical Journal 708, 785 (2010) Studies of the Diffuse Interstellar Bands. IV. The Nearly Perfect Correlation Between λλ6196.0 and 6613.6, B. J. McCall, M. M. Drosback, J. A. Thorburn, D. G. York, S. D. Friedman, L. M. Hobbs, B. L. Rachford, T. P. Snow, P. Sonnentrucker, and D. E. Welty, Astrophysical Journal, 708, 1628 (2010) Studies Of The Diffuse Interstellar Bands. III. HD 183143 Hobbs, L.M., York, D.G., Snow, T.P., Thorburn, J.A., Bishof, M., Friedman, S.D., McCall, B.J., Rachford, B., Oka, T., Sonnentrucker, P., and Welty, D.E., Astrophysical Journal 705, 32 (2009) Studies of the Diffuse Interstellar Bands. III. HD 183143, L. M. Hobbs, D. G. York, J. A. Thorburn, T. P. Snow, M. Bishof, S. D. Friedman, B. J. McCall, T. Oka, B. Rachford, P. Sonnentrucker, and D. E. Welty, Astrophysical Journal, 705, 32 (2009) Data The Red Rectangle: Its Shaping Mechanism and its Source of Ultraviolet Photons Witt, A.N., Bijh, U., Hobbs, L.M., Aufdenberg, J., Thorburn, J.A. & York, D.G. Astrophysical Journal 693, 1946, (2009) A Catalog of Diffuse Interstellar Bands in the Spectrum of HD 204827 Hobbs,L.M., York, D.G., Snow, T.P., Oka, T., Thorburn, J.A., Bishof, M., Friedman, S.D., McCall, B.J., Rachford, B., Sonnentrucker, P., Welty, D.E. Astrophysical Journal 680, 1256, (2008) A Catalog of Diffuse Interstellar Bands in the Spectrum of HD 204827, L. M. Hobbs, D. G. York, T. P. Snow, T. Oka, J. A. Thorburn, M. Bishof, S. D. Friedman, B. J. McCall, B. Rachford, P. Sonnentrucker, and D. E. Welty, Astrophysical Journal, 680, 1256 (2008) Monitoring the Variable Interstellar Absorption toward HD219188 with HST Welty, D., Astrophysical Journal 668, 1012 (2007) Abundances and Behavior of 12CO, 13CO and C2 in Translucent Sight Lines Sonnentrucker, P., Welty, D.E., Thorburn, J.A., and York, D.G., Astrophysical Journal 168. 56 (2006) Optical Emission Band Morphologies of the Red Rectangle Vijh, U.P., Witt, A.N., York, D.G., Dwarkadas, V.V., Woodgate, B.E., and Palunas P. Astrophysical Journal 653, 1336 (2005) Atomic and Molecular Emission Lines from the Red Rectangle Hobbs, L.M., Thorburn, J.A., Oka, T., Barentine, J., Snow, T.P., York, D.G. Astrophysical Journal 615. 947 (2004) Some Diffuse Interstellar Bands Related to Interstellar C2 Molecules Thorburn, J., Oka, T., Hobbs, L., McCall, B., Welty, D., Snow, T., Friedman, S., Sonnentrucker, P., Rachford, B., and York, D.G. Astrophysical Journal 584, 339 (2003) Some Diffuse Interstellar Bands Related to Interstellar C2 Molecules, J. A. Thorburn, L. M. Hobbs, B. J. McCall, T. Oka, D. E. Welty, S. D. Friedman, T. P. Snow, P. Sonnentrucker, and D. G. York, Astrophysical Journal, 584, 339 (2003) Observations of C3 in Translucent Sightlines, T. Oka, J. A. Thorburn, B. J. McCall, S. D. Friedman, L. M. Hobbs, P. Sonnentrucker, D. E. Welty, and D. G. York, Astrophysical Journal, 582, 823 (2003) ARCES: an Echelle Spectrograph for the Astrophysical Research Consortium Wang, S., Hildebrand, R. H., Hobbs, L. M., Heimsath, S.H., Kelderhourse, G.A., Lowenstein, R.F., Lucero, S., Rockosi, C.M., Sandford, D.B., Sundwall, J.L., Thorburn, J.A., and York, D.G., Proc. SPIE 4841, 1145 (2002) Observations of C3 in Translucent Clouds Oka, T., Thorburn, J.A., McCall, B.J., Oka, T., Thorburn, J., Hobbs, L.M., and York, D.G., Astrophysical Journal 582, 823 (2002) A Critical Examination of the l-C3H2- Spectrum and the Diffuse Interstellar Band McCall, B.J., Oka, T., Thorburn, J., Hobbs, L.M., and York, D.G., Astrophysical Journal 657, L145 (2002) Unusually Weak Diffuse Interstellar Bands toward HD 62542, T. P. Snow, D. E. Welty, J. Thorburn, L. M. Hobbs, B. J. McCall, P. Sonnentrucker, D. G. York, Astrophysical Journal, 573, 670 (2002) A Critical Examination of the l-C3H2- Spectrum and the Diffuse Interstellar Bands, B. J. McCall, T. Oka, J. Thorburn, L. M. Hobbs, and D. G. York, Astrophysical Journal Letters, 567, L145 (2002) Unusually Weak Diffuse Interstellar Bands toward HD 62542 Snow, T.P., Welty, D.E., Thorburn, J., Hobbs, L.M., Oka, T., McCall, B.J., York, D.G. and Sonnentrucker, P. Astrophysical Journal 573, 670 (2002) Rejection of the C7- Diffuse Interstellar Band Hypothesis McCall, B.J., Thorburn, J., Hobbs, L.M., Oka, T., and York D.G. Astrophysical Journal Letters 559, L49, (2001) Rejection of the C7- Diffuse Interstellar Band Hypothesis, B. J. McCall, J. Thorburn, L. M. Hobbs, T. Oka, and D. G. York, Astrophysical Journal, 559, L49 (2001) Observations of Diffuse Interstellar Bands Attributed to C7-, B. J. McCall, D. G. York, and T. Oka, Astrophysical Journal, 531, 329 (2000) Observations of DiffuseInterstellar Bands Attributed to C7- McCall, B.J., York, D.G., and Oka, T. Astrophysical Journal 531, 329 (1999)

The members of the DIB collaboration are (in alphabetical order): Ben McCall (University of Illinois at Urbana-Champaign) Brian Rachford (Embry-Riddle Aeronautical University) Dan Welty (University of Chicago) Don York (University of Chicago) Gerardo Hidalgo-Cuellar (University of Colorado at Boulder) Julie Thorburn (Carthage College) Lew Hobbs (University of Chicago) Paule Sonnentrucker (Johns Hopkins University) Reid Sherman (NASA) Scott Friedman (Space Telescope Science Institute) Takeshi Oka (University of Chicago) Ted Snow (University of Colorado at Boulder) The members of the DIB mailing list are (in alphabetical order): Adolf Witt (University of Toledo) Ben McCall (University of Illinois Urbana-Champaign Brian Rachford (Embry-Riddle Aeronautical Institute) Brian York (Space Telescope Science Institute) Dan Welty (University of Chicago) Don York (University of Chicago) Joshua Destree (University of Colorado Boulder) Justin Searles (University of Colorado Boulder) Julie Dahlstrom (Carthage College) Lew Hobbs (University of Chicago) Meredith Drosback (University of Colorado Boulder) Noah Baskes (University of Chicago) Paule Sonnentrucker (Space Telescope Science Institute) Reid Sherman (NASA) Scott Friedman (Space Telescope Science Institute) Sean Johnson (University of Chicago) Takeshi Oka (University of Chicago) Theodore Snow (University of Colorado Boulder) Zihao Jiang (Stanford University)

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