| PROPID | PI | PROPNAME |
|---|
| 2004C-PA-04B-0085 | Bowen, Tripp, Heckman, York | Mg II QSO Absorption Systems: Galaxy Halos or Metal Enriched IGM? |
| 2004C-PA-04B-0159 | Zakamska, Strauss, Schmidt, Krolick, Hall | Spectropolarimetry of Type II Quasar Candidates from the SDSS |
| 2004C-PA-04B-0183 | Turnshek, Vanden Berk, Rao, Thilker, Walterbos | Probing the Outer Regions of M31 with Quasar Absorption Lines |
| 2004C-PA-04B-0280 | Massey, DeGioia-Eastwood | The Evolution and Physical Parameters of Massive Stars at High Metallicity: O Stars in the Andromeda Galaxy |
| 2004C-PA-04B-0432 | Gizis, Madura | A Search for Hyades Brown Dwarfs |
| 2004C-SAO-1 | Szentgyorgyi, Caldwell, Furesz, Korzennik, G. Williams | Continued Commissioning of the Hectochelle |
| 2004C-SAO-2 | Fabricant, Roll, Caldwell | Hectospec Engineering |
| 2004C-SAO-3 | W. Brown, McLeod, Fazio, Geary, Hora, Megeath, Pahre, Willner | SWIRC Commissioning |
| 2004C-SAO-4 | McLeod, Conroy | Megacam Engineering |
| 2004C-SAO-5 | Geller, Fabricant, Kurtz, Woods, Dell'Antonio, Rines | Mapping the Mass Distribution in the Universe |
| 2004C-SAO-6 | Korzennik, Szentgyorgyi | PRV for Exo-Planet Detection using Iodine Cell |
| 2004C-SAO-7 | Holman, Stanek, Grav, Gaudi, Hartman | The Size Distribution of Kuiper Belt Objects |
| 2004C-SAO-8 | Kirshner, Matheson, Challis, Hicken | ESSENCE: Spectroscopy of High-Redshift Type Ia Supernovae |
| 2004C-SAO-9 | Caldwell, Morrison, Harding, Rose, Schiavon | Kinematics and Ages of M31 Globular Clusters: Not the Milky Way's Twin |
| 2004C-SAO-10 | Huchra, Barmby, Brodie, Beasley, Strader | A Spectroscopic Survey of M31 Globular Clusters |
| 2004C-SAO-11 | W. Brown, Bullock, Geller, Hernquist, Johnston, Kenyon, Kurtz | Star Streams in the Milky Way Halo |
| 2004C-SAO-12 | Steeghs, Sokoloski, Drake, Drew, IPHAS team | Hectospec Follow-up of Galactic H1 Sources from the IPHAS Survey |
| 2004C-SAO-13 | Furesz, Hartmann, Sicilia-Aguilar, Calvet, Szentgyorgyi | The Orion Nebula Region: Cluster in Formation |
| 2004C-SAO-14 | Furesz, Hartmann, Szentgyorgyi, Ridge, Rebull, Stauffer | NGC 2264: Kinematics of a Key Young Cluster |
| 2004C-SAO-15 | Westover, Huchra, Hernquist | Three-Dimensional Structure of the Lyman Alpha Forest |
| 2004C-SAO-16 | Kirshner, Matheson, Challis, Hicken | Cluster and Lensed Supernova Survey |
| 2004C-SAO-17 | Hartmann, Stauffer, Szentgyorgyi | The Pleiades: From Testing to Science |
| 2004C-SAO-18 | Luhman | Do Young Stars and Brown Dwarfs Have the Same Spatial Distributions? |
| 2004C-SAO-19 | Calvet, Briceqo, Hartmann, Vivas | The Star Formation History of Orion and its Environs |
| 2004C-SAO-20 | Bonanos, Stanek | Accurate Parameters of Massive Stars in M31 and M33 |
| 2004C-SAO-21 | Sicilia-Aguilar, Hartmann, Muzerolle, Briceqo | Disk Evolution at the Ages of Planet Formation in CepOB2 |
| 2004C-SAO-22 | Metcalfe, Liebert, K. Williams, Munn, Harris, Dahn, von Hippel, Winget | Improved Luminosity Function of Cool White Dwarfs from the SDSS |
| 2004C-SAO-23 | P. Zhao, Grindlay, Laycock, Koenig, Hong, van den Berg, Schlegel, Cohn, Lugger, Rogel | ChaMPlane Survey: Spectroscopic Follow-Up |
| 2004C-SAO-24 | Mohanty, Hartmann Radial Velocities in Taurus |
| 2004C-SAO-26 | Barkhouse, P. Green, Silverman, Cameron, Wilkes, ChaMP Team | Unveiling the Space Density of X-Ray Selected AGN |
| 2004C-UAO-E56 | Lloyd-Hart, Angel, Stalcup, Baranec, Snyder, Putnam | Tomographic Wavefront Sensing with Multiple Laser Guide Stars |
| 2004C-UAO-E57 | Angel, Lloyd-Hart, Stalcup, Baranec, Snyder, Putnam | A Robust System for Projecting and Sensing the Wavefronts of a Constellation of Laser Beacons at the MMT |
| 2004C-UAO-G20 | Sarazin, Reiprich, Vikhlinin, Schneider, Erben | Studying the Nature of Dark Energy with Galaxy Clusters |
| 2004C-UAO-G61 | Humphreys, Wagner, Woodward | Spectroscopy of Evolved Massive Stars in M33 Observed with Spitzer |
| 2004C-UAO-S2 | Marble, Impey, Miller | Wide-Separation Gravitationally Lensed QSOs |
| 2004C-UAO-S3 | Schmidt, Vanlandingham, P. Smith | Very Low-m Magnetic Accretion Binaries from the SDSS |
| 2004C-UAO-S4 | Liebert, K. Williams, Metcalfe, Munn, Harris, Dahn, Kilic, von Hippel, Winget | An Improved Luminosity Function of Cool White Dwarfs from the Sloan Digital Sky Survey |
| 2004C-UAO-S5 | K. Williams, Bolte | White Dwarfs in Intermediate-Age Open Clusters: The Initial-Final Mass Relation |
| 2004C-UAO-S19 | Fan, Diamond-Stanic, Vestergaard | A Group of Luminous Quasars at z ~ 4: Tracing the Largest Structure in the Early Universe |
| 2004C-UAO-S23 | Tegler, Romanishin | Testing a Possible Primordial Origin for Kuiper Belt Object Colors |
| 2004C-UAO-S27 | Fan, Cool, Eisenstein, Jiang, Zehavi | A Spectroscopic Survey of Faint Quasars and Early-Type Galaxies in the SDSS Deep Stripe |
| 2004C-UAO-S30 | Tremonti, Moustakas, Kennicutt | The Interstellar Medium of Post-Starburst Galaxies |
| 2004C-UAO-S38 | Zabludoff, Momcheva, K. Williams, Keeton | The Importance of Lens Galaxy Environments |
| 2004C-UAO-S42 | Zaritsky, Clowe | Tracking Early-Type Galaxies Throughout the Cosmic Web |
| 2004C-UAO-S51 | Muzerolle, E. Young, Siebert, Gorlova, G. Rieke, Siegler | MMT Spectroscopy for a Spitzer Survey of Young Stellar Clusters |
| 2004C-UAO-S63 | Weigelt, Hofmann, Lachaume, Preibisch, Schertl, Men'shchikov | Visible and Near-Infrared Bispectrum Speckle Interferometry of the Disks, Jets, and Outflows of YSOs |
| 2004C-UAO-S64 | Beckert, Hofmann, Schertl, Weigelt | Visible and Infrared Bispectrum Speckle Interferometry of Bright Nearby AGN |
