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Michael L Sitko

Professor
Physics - Tenure-Track Faculty
446 Geology-Physics Building
513-556-0642
michael.sitko@uc.edu
http://www.physics.uc.edu/~sitko/

Education

Ph.D., University of Wisconsin - Madison, 1980.

Research Interests

My interests center around the nature of interstellar, circumstellar, and interplanetary dust grains, and the role they play in the formation of planetary systems. In the past few years I have been investigating the emission characteristics of the grains in the dusty disks surrounding young stars, and how they are evolving as the stellar systems age. The particle sizes and compositions are being compared to those of the diffuse interstellar medium, cometary grains of our own solar system, and dust grains condensed in the laboratory. Most of my recent observational work has been carried out with the Broadband Array Spectrograph System (BASS) of The Aerospace Corporation on the NASA Infrared Telescope Facility.

Research Support

Structure and Chemistry of Planet-Building Disks: A Synoptic Study , NASA Astrophysics Data Program. $335,696. Date: 2009

with Carol Grady, Eureka Scientific, Mapping the Gaseous Content of Protoplanetary and Young Planetary Systems with ACS, NASA Hubble Space Telescope. $14,999. Date: 2007

with Carol Grady, Eureka Scientific, The Environments and Evolution of Young Stars and Planetary Systems: Improving the Dating of the Nearest Herbig Ae Stars, NASA Astrophysics Data Program. $77,000. Date: 2006

Observations of Comet Tempel 1 in support of NASA’s Deep Impact Mission, University. $6500. Date: 2005

Small Research Grant, American Astronomical Society. $5450. Date: 2005

IR Spectroscopy of Dusty Protostellar Disks, NASA Origins of Solar Systems. $180,000. Date: 2000

with K. Werner, PI, Ultra-Hot Winds from DO White Dwarfs, Far Ultraviolet Spectroscopic Explorer. $10,600. Date: 2000

with C. Grady (NOAO), UV Spectroscopy of Infalling Cometary Material in Solar-Type pre-Main Sequence Stars, $13,730. Date: 1999

Thermal Emission Spectroscopy and Analysis of Dust, Disks, and Regoliths, NSF. $8,475 . Date: 1999

UV Molecular Bands in HD 44179, National Aeronautics and Space Administration. $15,458. Date: 1997

with D. Hines (PI - Univ. of Arizona), Hidden QSOs in Warm Infrared Ultraluminous Galactic Nuclei, $4,972. Date: 1996

with D. Hines (PI - Univ. of Arizona), Buried QSOs in IRAS-Selected Ultraluminous Galaxies, National Aeronautics and Space. $14,362. Date: 1995

UV Molecular Bands in HD 44179, National Aeronautics and Space Administration. $36,197. Date: 1995

AAS Small Research Grants , American Astronomical Society. $3,340. Date: 1995

Ultraviolet Spectropolarimetry of Comet P/Encke and Comet P/West-Kohoutek-Ikemura, National Aeronautics and Space Administration. $59,753. Date: 1993

with B. Wills (PI - University of Texas), Hidden QSOs in Ultraluminous IRAS AGN, National Aeronautics and Space Administration. $19,832. Date: 1993

UV Molecular Bands in HD 44179, National Aeronautics and Space Administration. $67,099. Date: 1992

Astronomy in the Classroom - II , National Aeronautics and Space Administration. $4,851. Date: 1992

The Physical Nature of Quasars, University Research Council, University of Cincinnati. $5500. Date: 1991

IUE, National Aeronautics and Space Administration. $23,000. Date: 1991

AAS Small Research Grants, American Astronomical Society. $1,600. Date: 1991

Astronomy in the Classroom, National Aeronautics and Space Administration. $4,217. Date: 1991

IUE, National Aeronautics and Space Administration. $2,000. Date: 1989

Spectropolarimetry of Galactic and Extragalactic Objects, University Research Council, University of Cincinnati. $6600. Date: 1987

IUE, National Aeronautics and Space Administration. $10,182. Date: 1987

IUE, National Aeronautics and Space Administration. $9330. Date: 1986

The Physical Nature of Quasars, University Research Council, University of Cincinnati. $1900. Date: 1986

Published Abstracts

C.A. Grady, G. Schneider, M.L. Sitko, G.M. Williger, K. Hamagichi, S.D. Brittain, K. Ablordeppey, D. Apai, L. Beerman, W.J. Carpenter, K.A. Colins, M. Fukagawa, H.B. Hammel, Th. Henning, D. Hines, R. Kimes, D.K. Lynch, R. Pearson, R.W. Russell, F. Ménard, M. Silverstone, P. Smith, M. Troutman, D. Wilner, & B. Woodgate (2009). The Disk and Environment of a Young Altair Analog: SAO 206462 [Abstract]. COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun. AIP Conference Proceedings, 1094, 385.

A.F. Kowalski, C.A. Grady, K. Hamaguchi, M. Clampin, C.A. Grady, M.L. Sitko, K.S. Bjorkman, M. Fukagawa, D.C. Hines, E. Katoh, & B, A. Whitney (2009). Diagnosing the Structure of the HD 163296 Protoplanetary Disk via Coronagraphic Imaging Polarimetry [Abstract]. COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun. AIP Conference Proceedings, 1094, 393.

K.A. Collins, C.A. Grady, K. Hamaguchi, J.P. Wisnewski, S. Brittain, M. Sitko, W.J. Carpenter, J.P. Williams, G.S. Mathews, G.M. Williger, R. van Boekel, A. Carmona, M.E. van den Ancker, G. Meeus, X.P. Chen, R. Petre, B.E. Woodgate, & Th. Henning (2009). HD 100453: An Evolutionary Link Between Protoplanetary Disks and Debris Disks [Abstract]. COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun. AIP Conference Proceedings, 1094(409).

D.K. Lynch, R. J. Rudy, R. W. Russell, S. Mazuk, R. L. Pearson, C. E. Woodward, R. C. Puetter, R. B. Perry, J. W. Liebert, M. Cushing, K. S. Bjorkman, A. S. Rivkin, M. L. Sitko, H. B. Hammel (2009). V1280 Scorpii: IR Spectral Evolution From 4 Feb 2007 To 4 Oct 2008 [Abstract]. AAS21442808.

D.E. Harker, M.L. Sitko, C.E. Woodward, D.H. Wooden, R.W. Russell, & D.K. Lynch (2008). Dust Properties of Comet 73P/Schwassmann-Wachmann 3 Fragments B and C [Abstract]. LPICo1405.8040.

M.L. Sitko, E.F. Polomski, C.M. Lisse, D.E Harker, D.K. Lynch, R.W. Russell, M.S. Kelley, B.A. Whitney, & M.J. Wolff (2008). Spitzer Spectroscopy of Comet 73P/Schwassmann-Wachmann 3 [Abstract]. LPICo1405.8101.

C.M. Lisse, M.L. Sitko, W.T. Reach, N. Dello Russo, & Y.R. Fernandez (2008). Six Comets in the Infrared: Clues to the Formation and Evolution of the Solar System [Abstract]. LPICo1405.8224.

C.M. Lisse, M.L. Sitko, W.T. Reach, Y.R. Fernandez, & M.S. Kelley (2008). A Spectral Survey of Six Comets in the Infrared [Abstract]. DPS40.0506.

J.P. Wisniewski, M. Clampin, C.A. Grady, M.L. Sitko, K.S. Bjorkman, A.F. Kowalski, M. Fukagawa, D.C. Hines, E. Katoh, B.A. Whitney (2008). Multi-Epoch Coronagraphic Imaging of Herbig Ae Circumstellar Disk Systems [Abstract]. AAS21340906.

M.L. Sitko, R.W. Russell, D.K. Lynch, C.A. Grady, H.B. Hammel, L.C. Beerman, A.N. Day, D. Huelsman, R.J. Rudy, S.M. Brafford, & E.M. Halbedel (2008). Infrared Observations of FS CMa Stars [Abstract]. AAS21340914.

K. Collins, C.Grady, J.P. Wisniewski, K. Hamaguchi, R. van Boekel, S. Brittain, A. Carmona, G. Williger, M. van den Ancker, M. Sitko, W.J. Carpenter, B. Woodgate, Th. Henning, & R Petre (2007). The Disk and Environment of Herbig Star HD 100453 [Abstract]. AAS, 210.8714.

C. Grady, G. Schneider, B.E. Woodgate, J.P. Wisniewski, S. Brittain, M.L. Sitko, & K. Collins (2007). The Evolution of Protoplanetary Disks: A Decade of HST CoronagraphyLyot Conference, 34. [Abstract]. Lyot Conference, 34.

M.L. Sitko, W.J. Carpenter, R.L. Kimes, J.L. Wilde, D.K. Lynch, R.W Russell, R.J. Rudy, S.M. Mazuk, C.C. Venturini, R.C. Puetter, C.A. Grady, S.M. Brafford, & R.B. Perry (2007). Time Variability of the Inner Dust Zone in Pre-Main Sequence Disk Systems [Abstract]. Meteoritics & Planetary Science, 42.5284.

P.A. Yanamandra-Fisher, G.S. Orton, S. Jezweski, M. Sitko, D.K. Lynch, R. Rudy, K.H. Baines, T.W. Momary, & P. Chen (2007). Near-Infrared Spectra of Jupiter's North Temperate Belt Distrurbance (NTBs) of 2007 [Abstract]. DPS 39.1911.

M.L. Sitko, W.J. Carpenter, C.A. Grady, R.W Russell, D.K. Lynch, R.J. Rudy, S.M. Mazuk, C.C. Venturini, R.L. Kimes, L.C. Beerman, K.E. Ablordeppey, R.C. Puetter, J.P. Wisniewski, S.M. Brafford, E.F. Polomski, H.B. Hammel, R.B. Perry & J.L. Wilde. (2007). Time Variability of the Dust Sublimation Zone in Pre-Main Sequence Disk Systems [Abstract]. DPS 39.4201.

G. Orton, K. Baines, P. Yanamandra-Fisher, O. Mousis, L. Vanzi, T. Hayward, J. De Buizer, A. Simon-Miller, G. Bjoraker, L. Fletcher, R. Gladstone, E. Edkins, J. Kemerer, M. Sitko, & D. Lynch (2007). Observations of Jupiter Supporting New Horizons Encounter and During a period of Global Upheaval [Abstract]. AGUFM.P53C.03.

P.A. Yanamandra-Fisher, G.S. Orton, S. Jezewski, M. Sitko, D. Lynch, R. Rudy (2007). Near-Infrared Spectral Analysis of 2007 Jovian Temperate Belt Disturbance [Abstract]. AGUFM.P53C.04.

M.L. Sitko, R.W Russell, D.K. Lynch, R.J. Rudy, S.M. Mazuk, C.C. Venturini, W.J. Carpenter, R.L. Kimes, L.C. Beerman, K.E. Ablordeppey, C.A. Grady, J.P. Wisniewski, E.F. Polomski, S.M. Brafford, H.B. Hammel, R.B. Perry & J.L. Wilde (2007). Time Variability of the Inner Dust Rims in PMS Disk Systems [Abstract]. AAS 211.5008.

J.P. Wisnewski, A.F. Kowalski, M. Clampin, C.A. Grady, M.L. Sitko, K.S. Bjorkman, D.C. Hines, & B.A. Whitney (2007). First Science Results from the UKIRT UIST Coronagraphic Imaging Polarimeter [Abstract]. AAS 211.5010.

R.J. Glinski, L.S. Bernstein, & M.L. Sitko (2007). Ultraviolet Spectroscopy of HD 44179 in the Red Rectangle [Abstract]. AAS 211.5120.

M.L. Sitko, B.A. Whitney, M.J. Wolff, E.F. Polomski, D.K. Lynch, R.W. Russell, D.E. Harker, & C.M. Lisse (2006). Infrared Spectroscopy of Comet 73P/Schwassmann-Wachmann 3 using the Spitzer Space Telescope [Abstract]. DPS 38.0606.

D.E, Harker, C.E. Woodward, M.L. Sitko, D.H. Wooden, R.W. Russell, & D.K. Lynch (2006). Mid-IR Gemini-N Observations Of Fragments B and C of Comet 73P/Schwassmann- Wachmann 3 [Abstract]. DPS 38.1204.

R.W. Russell, D.K. Lynch, M.L. Sitko, W.J. Carpenter, R.L. Kimes, & E.F. Polomski (2006). 3-13 Micron Spectroscopy of Comet 73P/Schwassmann-Wachmann 3 [Abstract]. DPS 38.1209.

D.K. Lynch, R.J. Rudy, R.W. Russell, S. Mazuk, C.C. Venturini, M.L. Sitko, H.B. Hammel, R.C. Puetter, & R.B. Perry (2006). The 0.5 13 &921;m Spectrum of V4332 Sagittarii in 2006 [Abstract]. AAS 209.0905.

C.A. Grady, G. Schneider, K. Hamaguchi, M. Sitko, W. Carpenter, K. Collins, G. Williger, B. Woodgate, R. Petre, J. Nuth, III, D. Hines, T. Denning, A. Quirrenbach, F. Menard, & D. Wilner (2006). Young Vega and Altair Analogs: Rotationally-Enhanced Activity in HD 169142 and HD 135344 [Abstract]. AAS 209.21980.

C. Grady, B. Woodgate, K. Stabelfeldt, D. Padgett, Th. Ening, V. Grinin, A. Quirrenbach, C. Eiroa, M. Sitko, W.J. Carpenter, D.K. Lynch, R.W. Russell, G.M. Williger, J.-C. Bouret, A. Roberge, M. Sahu, R. Kinble, T. Gull, C. Bowers, & R.B. Perry (2005). The HST/STIS Coronagraphic Survey of Pre-main Sequence Stars [Abstract]. AAS abstract 205.1717.

W.J. Carpenter, M.L. Sitko, D.K. Lynch, R.W. Russell, M.S. Hanner, & S.M. Brafford (2005). Time Evolution of Spectral Energy Distribution Fits of Four Stars [Abstract]. AAS abstract 205.1605.

C.A. Grady, G. Schneider, D. Potter, M. Silverstone, G.M. Williger, B. Woodgate, M.L. Sitko, W.J. Carpenter, & HST/GO 10177 Team (2005). The Disk and Companions of HD 169142 [Abstract]. AAS 207.1014.

M.L. Sitko, R.W. Russell, D.K. Lynch, D.L. Kim, W.J. Carpenter, J.L. Wilde, & S.M. Brafford (2004). 3-13 Micron Spectroscopy of Comet C/2001 Q4 (NEAT) [Abstract]. DPS abstract 36.3306.

M.L. Sitko, W.J. carpenter, D.K. Lynch, R.W. Russell, C.A. Grady, S.M. Brafford, & D.H. Wooden (2004). Long-term Variations in the Mid-IR Spectra of Dusty Protostellar Disks [Abstract]. AAS abstract 205.1606.

M.L. Sitko, D.K. Lynch, R.W. Russell, C.A. Grady, M.S. Hanner, & S.M. Brafford (2003). Mid-IR Spectroscopy of Dusty Protostellar Disks [Abstract]. IAU General Assembly XXV Abstract 1673.

C.C. Venturini, D.K. Lynch, R.J. Rudy, R.W. Russell, S. Mazuk, W. Dimpfl, M. Sitko, R.C. Puetter, L.S. Bernstein, & R.B. Perry (2003). Dramatic Changes in the Infrared Spectrum of V838 Monocerotis [Abstract]. AAS abstract 202.0705.

E. Polomski, D.K. Lynch, R.W. Russell, & M.L. Sitko (2003). Dust Composition and Morphology in FU Ori Systems [Abstract]. AAS abstract 203.0712.

Peer Reviewed Publications

C. Aspin, B. Reipurth, T.L. Beck, G. Aldering, R.L. Doering, H.B. Hammel, D.K. Lynch, M. Meixner, E. Pecontal, R.W. Russell, M.L. Sitko, R.C. Thomas, & V.U., (2009). V1647 Orionis: Reinvigorated Accretion and the Re-Appearance of McNeal's Nebula. ApJ, 692, L67.

K.A. Collins, C.A. Grady, K. Hamaguchi, J.P. Wisniewski, S. Brittain, M. Sitko, W.J. Carpenter, J.P. Williams, G.S. Matthews, G.M. Williger, R. van Boekel, A. Carmona, Th. henning, M.E. van den Ancker, G. Meeus, X.P. Chen. R. Petre, & B.E. Woodgate (2009). HD 100453: A Link Between Gas-Rich Protoplanetary Disks and Gas-Poor Debris Disks. ApJ, 697, 557.

C. A. Grady, G. Schneider, M. L. Sitko, G. M. Williger, K. Hamaguchi, S. D. Brittain, K. Ablordeppey, D. Apai, L. Beerman, W. J. Carpenter, K. A. Collins, M. Fukagawa, H. B. Hammel, Th. Henning, D. Hines, R. Kimes, D. K. Lynch, F. Ménard, R. Pearson, R. W. Russell, M. Silverstone, P. S. Smith, M. Troutman, D. Wilner, B. Woodgate, & M. Clampin (2009). Revealing the Structure of a Pre-Transitional Disk: The Case of the Herbig F Star SAO 206462 (HD 135344B). ApJ, 699, 1822.

M.L. Sitko, W.J. Carpenter, R.L. Kimes, J.L. Wilde, D.K. Lynch, R.W. Russell, R.J. Rudy, S.M. Mazuk, & C.C. Venturini, R.C. Puetter, C.A. Grady, E.F. Polomski, J.P. Wisnewski, S.M. Brafford, H. B. Hammel, R.B. Perry (2008). Variability of Disk Emission in Pre-Main Sequence and Related Stars. I. HD 31648 and HD 163296 - Isolated Herbig Ae Stars Driving Herbig-Haro Flows. ApJ, 678, 1070.

M.L. Sitko, L.S. Bernstein, & R.J. Glinski (2008). Ultraviolet Spectroscopy of HD 44179. ApJ, 680, 1426.

C.A. Grady, G. Schneider, K. Hamaguchi, M.L. Sitko, W.J. Carpenter, D. Hines, K.A. Collins, G.M. Williger, B.E. Woodgate, Th. Henning, F Ménard, D. Wilner, R. Petre, P. Palunas, A. Quirrenbach, J.A. Nuth, III, M.D. Silverstone, & J.S. Kim. (2007). The Disk and Environment of a Young Vega Analog: HD 169142. ApJ, 665, 1391.

D.K. Lynch, C.E. Woodward, T.R. Geballe, R.W. Russell, R.J. Rudy, C.C. Venturini, G.J. Schwarz, R.D. Gehrz, N. Smith, J.E. Lyke, S.J. Bus, M.L. Sitko, T.E. Harrison, S. Fisher, S.P. Eyres, A. Evans, S.N. Shore, S. Starrfield, M.F. Bode, M.A. Greenhouse, P.H. Hauschildt, J.W. Truran, R.E. Williams, R.B. Perry, R. Zamanov, & T.J. O'Brien (2006). Early Infrared Spectral Development of V1187 Scorpii (Nova Scorpiii 2004 No. 2). ApJ (638), 987-1003.

E.F. Polomski, C.E. Woodward, C.E. Telesco, R. Piña, H. Butner, E. Holmes, D.K. Lynch, R.W. Russell, M.L. Sitko, & D.H. Wooden (2005). Dust Morphology and Composition in FU Orionis Stars. AJ (129), 1035-1048.

C.A. Grady, B.E. Woodgate, C.W. Bowers, T.R. Gull, M.L. Sitko, W.J. Carpenter, D.K. Lynch, R.W. Russell, R.B. Perry, G.M. Williger, A. Roberge, J.-C. Bouret, & M. Sahu (2005). Coronagraphic Imaging of Pre-Main-Sequence Stars with the Hubble Space Telescope Space Telescope Imaging Spectrograph. I. The Herbig Ae Stars. ApJ (630), 958.

D.K. Lynch, R.J. Rudy, R.W. Russell, S. Mazuk, C.C. Venturini, W. Dimpfl, L.S. Bernstein, M.L. Sitko, S. Fajardo-Acosta, A. Tokunaga, R. Knacke, R.C. Ouetter, & R.B. Perry (2004). 0.8-13 Micron Spectroscopy of V838 Monocerotis and a Model for Its Emission. ApJ (607), 460-473.

M.L. Sitko, D.K. Lynch, R W. Russell, & M.S. Hanner (2004). 3-14 Micron Spectroscopy of Comets C/2002 O4 (Hönig), C/2002 V1 (NEAT), C/2002 X5 (Kudo-Fujikawa), C/2002 Y1 (Juels-Holvorcem), and 69P/Taylor and the Relationships among Grain Temperature, Silicate Band Strength, and Structure among Comets. ApJ (612), 576-587.

E. Bergin, N. Calvet, M.L. Sitko, H. Abgrall, P. D'Alessio, G.J. Herczeg, E. Roueff, C. Qi, D.K. Lynch, R.W. Russell, S.M. Brafford, & R.B. Perry (2004). A New probe of the Planet-Forming Region in T Tauri Stars. ApJ (614), L133-L136.

M.T. Rushton, B. Kaminski, D.K. Lynch, Ta.V. Pavlenko, A. Evans, S.P.S. Ayers, C.E. Woodward, R.W. Russell, R.J. Rudy, M.L. Sitko, and T. Kerr (2010). Current Changes in the Red Giant and Dusty Environment of the Recurrent Nova RS Ophiuchi Following the 2006 Eruption. MNRAS, 401, 99

C. A. Grady,K. Hamaguchi,G. Schneider, B. Stecklum, B. E. Woodgate, J. E. McCleary, G. M. Williger, M. L. Sitko, F. Ménard, Th. Henning, S. Brittain, M. Troutmann, B. Donehew, D. Hines, J. P. Wisniewski, D. K. Lynch, R. W. Russell, R. J. Rudy, A. N. Day, A. Shenoy, M. Endres, and K. A. Collins. (2010). Locating the Accretion Footprint on a Hebig Ae Star: MWC 480. ApJ, 719, 1565.

D.E. Harker, C.E. Woodward, M.S. Kelley, M.L. Sitko, D.H. Wooden, D.K. Lynch, and R.W. Russell. (2011). Mid-Infrared Spectrophotometric Observations of Fragments B and C of Comet 73P/Schwassmann-Wachmann 3. AJ, 141, 26 .

C.E Woodward, T.J. Jones, B. Brown, E.L. Ryan, M. Krejny, L. Kolokolova, M.S. Kelley, D.E. Harker, and M.L. Sitko. (2011). Dust in Comet C/2007 N3 (LULIN). AJ, 141, 181.

K.J. Meech + 195 authors. (2011). EPOXI: Comet 103P/Hartley 2 Observations from a Worldwide Campaign. ApJ, 734, L1.

M.L. Sitko, C.M. Lisse, M.S. Kelley, E.F. Polomski, D.K. Lynch, R.W. Russell, R.L. Kimes, B.A. Whitney, M.J. Wolff, and D.E. Harker. (2011). Infrared Spectroscopy of Comet 73P/Schwassmann-Wachmann 3 Using the Spitzer Space Telescope. AJ, 142, 80.

R.E. Stencel, B.K. Kloppenborg, R.E. Wall, Jr., J.L. Hopkins, S.B. Howell, D.W. Hoard, J. Rayner, S. Bus, A. Tokunaga, M.L. Sitko, S. Brafford, R.W. Russell, D.K. Lynch, H. Hammel, B. Whitney, G. Orton, P. Yanamandra-Fisher, J.L. Hora, P. Hinz, W. Hoffman, & A. Skemer. (2011). Infrared Studies of Epsilon Aurigae in Eclipse. AJ, 142, 174.

M.L. Sitko, A.N. Day, R.L. Kimes, L.C. Beerman, C. Martus, D.K. Lynch, R.W. Russell, C.A. Grady, G. Schneider, C.M. Lisse, J.A. Nuth, M. Curé, A.A. Henden, S. Kraus, V. Motta, M. Tamura, J. Hornbeck, G.M. Williger, & D. Fugazza. (2011). Variability of Disk Emission in Pre-Main Sequence and Related Stars. II. Variability in the Gas and Dust Emission of the Herbig Fe Star SAO 206462. ApJ, 745, 29.

C.M. Lisse, M.C. Wyatt, C.H. Chen, A. Morlok, D.M. Watson, P. Manoj, P. Sheehan, T.M. Currie, P. Thebault, & M.L. Sitko. (2012). Spitzer Evidence for a Late Heavy Bombardment and the Formation of Urelites in eta Corvi at ~1 Gyr. ApJ, 747, 93.

T. Muto, C. A. Grady, J. Hashimoto, M. Fukagawa, J. B. Hornbeck, M. Sitko,R. Russell, C. Werren, M. Curé, T. Currie, N. Ohashi1, Y. Okamoto, M. Momose, M. Honda, S. Inutsuka, T. Takeuchi1, R. Dong, L. Abe, W. Brandner, T. Brandt, J. Carson, S. Egner, M. Feldt, T. Fukue, M. Goto, O. Guyon, Y. Hayano, M. Hayashi, S. Hayashi, T. Henning, K. W. Hodapp, M. Ishii1, M. Iye, M. Janson, R. Kandori, G. R. Knapp, T. Kudo, N. Kusakabe, M. Kuzuhara, T. Matsuo, S. Mayama, M. W. McElwain, S. Miyama, J.-I. Morino, A. Moro-Martin, T. Nishimura, T.-S. Pyo, E. Serabyn, H. Suto, R. Suzuki, M. Takami, N. Takato, H. Terada, C. Thalmann, D. Tomono, E. L. Turner, M. Watanabe, J. P. Wisniewski, T. Yamada, H. Takami, T. Usuda, and M. Tamura. (2012). Detection of Inner Spiral Structures in the Disk of SAO 206462 (HD 135344B) and the Implications of the Physical State of the Disk by Spiral Density Wave Theory. ApJ, 748, L22.

Other Publications

R.Russell, R.Rudy, B. Kaneshiro, M. Skinner, S. Gregory, & M. Sitko (2009). V1280 Scorpii. IAU Circular (9046).

M. Sitko, R. Russell, D. Lynch, & R. Rudy (2009). V1280 Scorpii. IAU Circular (9046).

J.-U. Ness, G. Schwartz, C.E. Woodward, L.A. Helton, M. Sitko, R.W. Russell, D.K. Lynch, R.J. Rudy, S. Starrfield, J.P. Osborne, K. Page, & M.F. Bode (2009). The first X-ray detection of the dust-forming C-rich nova V1280 Sco. ATel (2063).

R.J. Rudy, D.K. Lynch, R.W. Russell, B. Kaneshiro, M. Sitko, & H. Hammel (2008). V1309 Scorpii. IAU Circular (8976).

R.J. Rudy, D.K. Lynch, R.W. Russell, M. Sitko, C.E. Woodward, & C. Aspin (2008). V1309 Scorpii. IAU Circular(8997).

D.K. Lynch, R.W. Russell, R.J. Rudy, M. Sitko, & C.E. Woodward (2008). V2468 Cygni. IAU Circular (8998).

M. Sitko, D.K. Lynch, R.W. Russell, R.J. Rudy, & C.E. Woodward (2008). V2670 Ophiuchi. IAU Circular (8998).

R.W. Russell, D.K. Lynch, R. Pearson, M.L. Sitko, H.B. Hammel, W. Golisch (2007). V5558 Sagittarii. IAU Circular (8854).

M.L. Sitko, L.C. Beerman, R.W. Russell, D.K. Lynch, R. Pearson, H.B. Hammel, & W. Golisch (2007). Comet C/2006 VZ_13 (LINEAR). IAU Circular (8855).

C.M. Lisse, N. Dello Russo, Y. Fernandez, G.H. Jones, & M. Sitko (2007). Comet C/2006 P1 (McNaught). IAU Circular (8862).

Colloquia

(04/17/2009). Disks: Gaps, Edges, and Planet Formation. University of New Mexico..

(03/27/2009). Disks: Gaps, Edges, and Planet Formation. .

(11/02/2006). Infrared Spectroscopy of Comet Schwassmann-Wachmann 3 using the Spitzer Space Telescope. University of Cincinnati.

(09/12/2005). The Red Rectangle: Rosetta Stone or Bizarro Star. University of Virginia.

(05/12/2005). The Red Rectangle: Rosetta Stone or Bizarro Star. University of Cincinnati.

(04/15/2005). The Red Rectangle: Rosetta Stone or Bizarro Star. University of Minnesota.

(03/10/2004). Cosmic Dust from the Cradle to the Grave. Institute for Advanced Study.

Lectures

(12-2006). The Fate of the Universe: Big Rip or Big Crunch?” . Cincinnati-area Mensa Society.

(09-2006). Comet Schwassmann-Wachmann3: The Great Crumbling Comet. ScopeOut 2006, Cincinnati Observatory Center.

(07-2006). Comet SW3: A Deeper Impact. University of Cincinnati Quarknet.

(06-2006). Comet SW3: A Deeper Impact. Cincinnati Observatory Center Friends of the Observatory.

(09-2005). Radio Astronomy. Physics for the 21st Century, University of Cincinnati Quarknet .

(09-2005). The Science of Deep Impact. ScopeOut 2005, Cincinnati Observatory Center.

(06-2004). SETI. QuarkNet Summer Institute, University of Cincinnati.

(03/10/2004). Cosmic Dust: The Solar System Perspective. Astronomy “Wunch" talk, Princeton University.

(03-2008). Development of Planetary Systems. Cincinnati Observatory Center.

(05-2008). Development of Planetary Systems. University of Cincinnati, Clermont.

(11-2008). Observing at NASA’s Infrared Telescope facility (IRTF)” . Cincinnati Observatory Center.

Paper Presentations

Nuria Calvet, Lee Hartmann, David Wilner, Andrew Walsh , Paola D’Alessio , Michael Sitko. Evidence for a Developing Gap in the Disk of TW Hydrae. Debris Disks and the Formation of Planets, ASP Conf. 2004.

M.L. Sitko, S.M. Brafford, A.E. Bauer, D.K. Lynch, R.W. Russell, C.A. Grady, J.D. Bradley , F.J. Molster , N. Calvet, L. Hartmann, J.A. Nuth, Hugh G.M. Hill, J.D. Biggs, & M.S. Hanner. Mid-IR Spectroscopy of Dusty Protostellar Disks: A Game Plan. Debris Disks and the Formation of Planets, ASP Conf. 2004.

C.E. Woodward, D.H. Wooden, D.E Harker, K.R. Bell, M.L. Sitko, D.K. Lynch, and R.W Russell. The Enigma of DG Tau: Temporally Variable 10 Micron Emission. Debris Disks and the Formation of Planets, ASP Conf. 2004.

F.J. Molster, J.P. Bradley, M.L. Sitko, and J.A. Nuth. Laboratory Measurements of Interplanetary Dust Particles and the Origin of Crystalline Silicates in Our Solar System and Other Protostellar Disks. Debris Disks and the Formation of Planets, ASP Conf. 2004.

P. D’Alessio, N. Calvet, L. Hartmann, J. Muzerolle, and M. Sitko. Models of Accretrion Disks around Young Stars. Star Formation at High Angular Resolution, IAU Symposium 221. 2004.

M.L. Sitko, D.K. Lynch, R.W. Russell, and C.A. Grady. Mid-IR Spectroscopy of the Debris Disks in the TW Hydrae Association. Planetary Systems in the Universe, IAU Sump. 202, IAU Symp. 202. 2004.