Session 78. Young Stars, Disks and Planets

Display, Friday, January 14, 2000, 9:20am-6:30pm, Grand Hall

78.01 A Search for Substellar Companions of \beta Pic- and Vega-like Stars Using HST/NICMOS

J. Brown, D. Bennum (UNR), A.B. Schultz (CSC/STScI), M. Rodrigue (UNR), D. Backman (F&M College), P. Vener (Loyola College), E. Rosenthal (NOAO), B. Perriello (STScI), H. Chen (Steward Obs.), P.T.P. Ho (SAO), A. Burrows (Steward Obs.)

78.02 Infrared imaging search for sub-stellar companions next to young nearby stars

R. Neuhäuser (MPE Garching), W. Brandner (IfA Hawaii), A. Eckart (MPE Garching), E.W. Guenther (TLS Tautenburg), J. Alves (ESO Garching), T. Ott, N. Húelamo, M. Fernández (MPE Garching)

78.03 Search for Dust Around Low Luminosity Main Sequence A-Type Stars

C.H. Chen, M. Jura (UCLA)

78.04 Detection of Quiescent Molecular Hydrogen Gas in the Circumstellar Disk of a Classical T Tauri Star

J.S. Bary, D.A. Weintraub (Vanderbilt Univ.), J.H. Kastner (Carlson Center for Imaging Science)

78.05 The CIDA-QUEST Large Scale Variability Survey of Orion OB1

C. Briceño, A.K. Vivas (Yale University), N. Calvet, L.W. Hartmann (CfA), QUEST Collaboration

78.06 Mid-IR Spectroscopy of Debris Disks in the TW Hydrae Association

M.L. Sitko (University of Cincinnati), D.K. Lynch, R.W. Russell (Aerospace Corporation), C.A. Grady (NOAO/STIS)

78.07 Spectroscopic Monitoring of Members and Candidate Members of the TW Hydrae Association

G. Torres (CfA), R. Neuhäuser (MPE, Garching), D.W. Latham, R.P. Stefanik (CfA)

78.08 The eta Chamaeleontis cluster and TW Hydrae association: a common origin in the Sco-Cen OB association

E.E. Mamajek (Steward Obs.), E.D. Feigelson (PSU), W.A. Lawson (UNSW/ADFA)

78.09 Shocks and Precursors in the Cepheus A Outflow as Observed by HST

P. Hartigan (Rice Univ.), J. Morse (CASA), J. Bally (CASA)

78.10 Towards an Improved Galaxy Model from Sloan Digital Sky Survey

B. Chen (Johns Hopkins Univ.), C. Stoughton (Fermilab), A. Smith (U. Michigan), SDSS Collaboration

78.11 Warm Circumstellar Dust in the HD 98800 Quadruple Star System

L. Prato, A.M. Ghez (UCLA), R.K. Pina, C.M. Telesco, R.S. Fisher (University of Florida), P. Wizinowich, O. Lai, D.S. Acton, P. Stomski (W.M. Keck Observatory)

78.12 Thermal Infrared Images of HD 98800: Detection of a Primitive Zodiacal Cloud?

R. D. Gehrz, N. Smith (Astronomy Department, University of Minnesota), F. J. Low (Steward Observatory, University of Arizona), J. Krautter (Landessternwarte,Heidelberg,Germany.), J. Nollenberg, T. J. Jones (Astronomy Department, University of Minnesota)

78.13 The Planetary Debris System in TWA 4 (HD98800)

F.J. Low, D.C. Hines, G. Schneider (Steward Observatory)