Michael L. Sitko
Department of Physics, University of Cincinnati
center around the nature of interstellar, circumstellar, and interplanetary dust grains, and the
role they play in the formation of planetary systems. It is apparent that
the formation of planets will have observable effects on the disks of
material from which they for. I am currently involved in a number of
investigations whose nature it is to detect these signposts of planet
What’s the life of an astronomer
really like? To see what a typical observing session at the IRTF is like,
or see another group’s video
In 2005 I also became an off-site employee of the Space Science Institute.
Web Sites for Some Important Planetary Missions
Web Sites for Some Important Space Astronomy Missions
Numerous young stars show spectroscopic evidence for
what would seem to be stargrazing comets. Such objects were routinely observed
hitting the Sun, using coronagraphic images taken by the SOHO satellite. The
solar system today is very empty compared to these other systems, and the
collision rate much lower by many orders of magnitude
The country's oldest operating observatory is right
here in Cincinnati.
Pigs to Sing – By Harriet Hall (reprinted with permission of the author
& Skeptical Inquirer)
Cult Science – from Richard P. Feynman’s “Surely You’re Joking, Mr.
Recent Representative Papers:
“Revealing the Structure of a Pre-Transitional
Disk: The Case of the Herbig F Star SAO 206462 (HD 135344B)”, 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, and M. Clampin, ApJ, 699, 1822. (pdf)
“HD 100453: A Link Between Gas-Rich
Protoplanetary Disks and Gas-Poor Debris Disks”, 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, ApJ 697, 557
“Ultraviolet Spectroscopy of HD
44179”, M.L. Sitko, L.S. Bernstein, and R.J. Glinski, ApJ, 680, 1426-1437 (2008). (pdf)
“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”, M.L. Sitko, W.J. Carpenter, R.L.
Kimes, J.L. Wilde, D.K. Lynch, R.W. Russell, R.J. Rudy, S.M. Mazuk, and C.C.
Venturini, R.C. Puetter, C.A. Grady, E.F. Polomski, J.P. Wisnewski, S.M. Brafford,
H. B. Hammel, R.B. Perry, ApJ, 678, 1070-1087 (2008). (pdf)