Search Results - "Knapp, G. R."

On the Spectral Evolution of Cool, Helium-Atmosphere White Dwarfs: Detailed Spectroscopic and Photometric Analysis of DZ Stars by Dufour, P, Bergeron, P, Liebert, James, Harris, H. C, Knapp, G. R, Anderson, S. F, Hall, Patrick B, Strauss, Michael A, Collinge, Matthew J, Edwards, Matt C

Get full text

A Catalog of Spectroscopically Identified White Dwarf Stars in the First Data Release of the Sloan Digital Sky Survey by Kleinman, S. J, Harris, Hugh C, Eisenstein, Daniel J, Liebert, James, Nitta, Atsuko, Krzesiński, Jurek, Munn, Jeffrey A, Dahn, Conard C, Hawley, Suzanne L, Pier, Jeffrey R, Schmidt, Gary, Silvestri, Nicole M, Smith, J. Allyn, Szkody, Paula, Strauss, Michael A, Knapp, G. R, Collinge, Matthew J, Mukadam, A. S, Koester, D, Uomoto, Alan, Schlegel, D. J, Anderson, Scott F, Brinkmann, J, Lamb, D. Q, Schneider, Donald P, York, Donald G

“…We present the full spectroscopic white dwarf and hot subdwarf sample from the Sloan Digital Sky Survey (SDSS) first data release, DR1. We find 2551 white…”
Get full text

SEEDS DIRECT IMAGING OF THE RV-DETECTED COMPANION TO V450 ANDROMEDAE, AND CHARACTERIZATION OF THE SYSTEM by He miniak, K. G., Kuzuhara, M., Mede, K., Brandt, T. D., Kandori, R., Suenaga, T., Kusakabe, N., Narita, N., Carson, J. C., Currie, T., Kudo, T., Hashimoto, J., Abe, L., Akiyama, E., Brandner, W., Feldt, M., Goto, M., Grady, C. A., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S. S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Janson, M., Knapp, G. R., Kwon, J., Matsuo, T., McElwain, M. W., Miyama, S., Morino, J.-I., Moro-Martin, A., Nishimura, T., Ryu, T., Pyo, T.-S., Serabyn, E., Suto, H., Suzuki, R., Takahashi, Y. H., Takami, M., Takato, N., Terada, H., Thalmann, C., Turner, E. L., Watanabe, M., Wisniewski, J., Yamada, T., Takami, H., Usuda, T., Tamura, M.

“…ABSTRACT We report the direct imaging detection of a low-mass companion to a young, moderately active star V450 And, that was previously identified with the…”
Get full text

Near-infrared Multi-band Photometry of the Substellar Companion GJ 758 B by Janson, M, Carson, J, Thalmann, C, McElwain, M. W, Goto, M, Crepp, J, Wisniewski, J, Abe, L, Brandner, W, Burrows, A, Egner, S, Feldt, M, Grady, C. A, Golota, T, Guyon, O, Hashimoto, J, Hayano, Y, Hayashi, M, Hayashi, S, Henning, T, Hodapp, K. W, Ishii, M, Iye, M, Kandori, R, Knapp, G. R, Kudo, T, Kusakabe, N, Kuzuhara, M, Matsuo, T, Mayama, S, Miyama, S, Morino, J.-I, Moro-Martín, A, Nishimura, T, Pyo, T.-S, Serabyn, E, Suto, H, Suzuki, R, Takami, M, Takato, N, Terada, H, Tofflemire, B, Tomono, D, Turner, E. L, Watanabe, M, Yamada, T, Takami, H, Usuda, T, Tamura, M

“…GJ 758 B is a cold (~600 K) companion to a Sun-like star at 29 AU projected separation, which was recently detected with high-contrast imaging. Here, we…”
Get full text

Toward Spectral Classification of L and T Dwarfs: Infrared and Optical Spectroscopy and Analysis by Geballe, T. R, Knapp, G. R, Leggett, S. K, Fan, X, Golimowski, D. A, Anderson, S, Brinkmann, J, Csabai, I, Gunn, J. E, Hawley, S. L, Hennessy, G, Henry, T. J, Hill, G. J, Hindsley, R. B, Ivezić, Ž, Lupton, R. H, McDaniel, A, Munn, J. A, Narayanan, V. K, Peng, E, Pier, J. R, Rockosi, C. M, Schneider, D. P, Smith, J. Allyn, Strauss, M. A, Tsvetanov, Z. I, Uomoto, A, York, D. G, Zheng, W

Get full text

SDSS data management and photometric quality assessment by Ivezić, Ž., Lupton, R. H., Schlegel, D., Boroski, B., Adelman-McCarthy, J., Yanny, B., Kent, S., Stoughton, C., Finkbeiner, D., Padmanabhan, N., Rockosi, C. M., Gunn, J. E., Knapp, G. R., Strauss, M. A., Richards, G. T., Eisenstein, D., Nicinski, T., Kleinman, S. J., Krzesinski, J., Newman, P. R., Snedden, S., Thakar, A. R., Szalay, A., Munn, J. A., Smith, J. A., Tucker, D., Lee, B. C.

“…We summarize the Sloan Digital Sky Survey data acquisition and processing steps, and describe runQA, a pipeline designed for automated data quality assessment…”
Get full text

Panchromatic properties of 99 000 galaxies detected by SDSS, and (some by) ROSAT, GALEX, 2MASS, IRAS, GB6, FIRST, NVSS and WENSS surveys by Obrić, M., Ivezić, Ž., Best, P. N., Lupton, R. H., Tremonti, C., Brinchmann, J., Agüeros, M. A., Knapp, G. R., Gunn, J. E., Rockosi, C. M., Schlegel, D., Finkbeiner, D., Gaćeša, M., Smolčić, V., Anderson, S. F., Voges, W., Jurić, M., Siverd, R. J., Steinhardt, W., Jagoda, A. S., Blanton, M. R., Schneider, D. P.

“…We discuss the panchromatic properties of 99 088 galaxies selected from the Sloan Digital Sky Survey (SDSS) Data Release 1 'main' spectroscopic sample (a…”
Get full text

A collimated, high-speed outflow from the dying star V Hydrae by Sahai, R, Morris, M, Knapp, G. R, Young, K, Barnbaum, C

“…Stars with masses in the range 1-8 solar masses (M ) live ordinary lives for ∼109-1010 years, but die extraordinary deaths. First, during their death throes as…”
Get full text

Infrared Photometry of Late-M, L, and T Dwarfs by Leggett, S. K, Golimowski, David A, Fan, Xiaohui, Geballe, T. R, Knapp, G. R, Brinkmann, J, Csabai, István, Gunn, James E, Hawley, Suzanne L, Henry, Todd J, Hindsley, Robert, Ivezić, Željko, Lupton, Robert H, Pier, Jeffrey R, Schneider, Donald P, Smith, J. Allyn, Strauss, Michael A, Uomoto, Alan, York, D. G

Get full text

The Galactic distribution of asymptotic giant branch stars by Jackson, Tom, Ivezić, Željko, Knapp, G. R.

“…We study the Galactic distribution of ∼10 000 candidate asymptotic giant branch (AGB) stars selected by IRAS colours and variability index. The distance to…”
Get full text

The Discovery of a Field Methane Dwarf from Sloan Digital Sky Survey Commissioning Data by Strauss, Michael A, Fan, Xiaohui, Gunn, James E, Leggett, S. K, Geballe, T. R, Pier, Jeffrey R, Lupton, Robert H, Knapp, G. R, Annis, James, Brinkmann, J, Crocker, J. H, Csabai, István, Fukugita, Masataka, Golimowski, David A, Harris, Frederick H, Hennessy, G. S, Hindsley, Robert B, Ivezić, Željko, Kent, Stephen, Lamb, D. Q, Munn, Jeffrey A, Newberg, Heidi Jo, Rechenmacher, Ron, Schneider, Donald P, Smith, J. Allyn, Stoughton, Chris, Tucker, Douglas L, Waddell, Patrick, York, Donald G

Get full text

Model Atmosphere Analysis of the Weakly Magnetic DZ White Dwarf G165-7 by Dufour, P, Bergeron, P, Schmidt, G. D, Liebert, James, Harris, H. C, Knapp, G. R, Anderson, S. F, Schneider, D. P

“…A reanalysis of the strongly metal-blanketed DZ white dwarf G165-7 is presented. An improved grid of model atmospheres and synthetic spectra is used to analyze…”
Get full text

DIRECT IMAGING OF A COLD JOVIAN EXOPLANET IN ORBIT AROUND THE SUN-LIKE STAR GJ 504 by Kuzuhara, M, Tamura, M, Kudo, T, Janson, M, Kandori, R, Brandt, T D, Thalmann, C, Spiegel, D, Biller, B, Carson, J

“…Several exoplanets have recently been imaged at wide separations of >10 AU from their parent stars. These span a limited range of ages (<50 Myr) and…”
Get full text

Infrared Observations and Modeling of One of the Coolest T Dwarfs: Gliese 570D by Geballe, T. R, Saumon, D, Leggett, S. K, Knapp, G. R, Marley, M. S, Lodders, K

Get full text

The Missing Link: Early Methane ("T") Dwarfs in the Sloan Digital Sky Survey by Leggett, SK, Geballe, TR, Fan, X, Schneider, DP, Gunn, JE, Lupton, RH, Knapp, GR, Strauss, MA, McDaniel, A, Golimowski, DA, Henry, TJ, Peng, E, Tsvetanov, ZI, Uomoto, A, Zheng, W, Hill, GJ, Ramsey, LW, Anderson, SF, Annis, JA, Bahcall, NA, Brinkmann, J, Chen, B, Csabai, I, I, Fukugita, M, Hennessy, GS, Hindsley, RB, Ivezic, Z, Lamb, DQ, Munn, JA, Pier, JR, Schlegel, DJ, Smith, JA, Stoughton, C, Thakar, AR, York, DG

“…We report the discovery of three cool brown dwarfs that fall in the effective temperature gap between the latest L dwarfs currently known, with no methane…”
Get full text

The rest-frame optical colours of 99 000 Sloan Digital Sky Survey galaxies by Smolčić, V., Ivezić, Ž, Gaćeša, M., Rakos, K., Pavlovski, K., Ilijić, S., Obrić, M., Lupton, R. H., Schlegel, D., Kauffmann, G., Tremonti, C., Brinchmann, J., Charlot, S., Heckman, T. M., Knapp, G. R., Gunn, J. E., Brinkmann, J., Csabai, I., Fukugita, M., Loveday, J.

“…We discuss the colours of 99 088 galaxies selected from the Sloan Digital Sky Survey (SDSS) Data Release 1 ‘main’ spectroscopic sample (a flux-limited sample,…”
Get full text

The Discovery of a Second Field Methane Brown Dwarf from Sloan Digital Sky Survey Commissioning Data by Tsvetanov, Zlatan I, Golimowski, David A, Zheng, Wei, Geballe, T. R, Leggett, S. K, Ford, Holland C, Davidsen, Arthur F, Uomoto, Alan, Fan, Xiaohui, Knapp, G. R, Strauss, Michael A, Brinkmann, J, Lamb, D. Q, Newberg, Heidi Jo, Rechenmacher, Ron, Schneider, Donald P, York, Donald G, Lupton, Robert H, Pier, Jeffrey R, Annis, James, Csabai, István, Hindsley, Robert B, Ivesić, Željko, Munn, Jeffrey A, Thakar, Aniruddha R, Waddell, Patrick

“…We report the discovery of a second field methane brown dwarf from the commissioning data of the Sloan Digital Sky Survey (SDSS). The object, SDSS…”
Get full text

The Discovery of a High-Redshift Quasar without Emission Lines from Sloan Digital Sky Survey Commissioning Data by Fan, Xiaohui, Strauss, Michael A, Gunn, James E, Lupton, Robert H, Carilli, C. L, Rupen, M. P, Schmidt, Gary D, Moustakas, Leonidas A, Davis, Marc, Annis, James, Bahcall, Neta A, Brinkmann, J, Brunner, Robert J, Csabai, István, Doi, Mamoru, Fukugita, Masataka, Heckman, Timothy M, Hennessy, G. S, Hindsley, Robert B, Ivezić, Željko, Knapp, G. R, Lamb, D. Q, Munn, Jeffrey A, Pauls, A. George, Pier, Jeffrey R, Rockosi, Constance M, Schneider, Donald P, Szalay, Alexander S, Tucker, Douglas L, York, Donald G

“…We report observations of a luminous unresolved object at redshift z=4.62, with a featureless optical spectrum redward of the Lyalpha forest region, discovered…”
Get full text

THE MOVING GROUP TARGETS OF THE SEEDS HIGH-CONTRAST IMAGING SURVEY OF EXOPLANETS AND DISKS: RESULTS AND OBSERVATIONS FROM THE FIRST THREE YEARS by Brandt, Timothy D, Kuzuhara, Masayuki, McElwain, Michael W, Schlieder, Joshua E, Wisniewski, John P, Turner, Edwin L, Carson, J, Matsuo, T, Biller, B, Bonnefoy, M

“…We present results from the first three years of observations of moving group (MG) targets in the Strategic Exploration of Exoplanets and Disks with Subaru…”
Get full text

THE MISSING CAVITIES IN THE SEEDS POLARIZED SCATTERED LIGHT IMAGES OF TRANSITIONAL PROTOPLANETARY DISKS: A GENERIC DISK MODEL by DONG, R, RAFIKOV, R, KUZUHARA, M, TANII, R, ITOH, Y, THALMANN, C, WISNIEWSKI, J, MAYAMA, S, JANSON, M, ABE, L, BRANDNER, W, CARSON, J, ZHU, Z, EGNER, S, FELDT, M, GOTO, M, GUYON, O, HAYANO, Y, HAYASHI, M, HAYASHI, S, HENNING, T, HODAPP, K. W, HONDA, M, HARTMANN, L, INUTSUKA, S, ISHII, M, IYE, M, KANDORI, R, KNAPP, G. R, KUDO, T, KUSAKABE, N, MATSUO, T, MCELWAIN, M. W, MIYAMA, S, WHITNEY, B, MORINO, J.-I, MORO-MARTIN, A, NISHIMURA, T, PYO, T.-S, SUTO, H, SUZUKI, R, TAKAMI, M, TAKATO, N, TERADA, H, TOMONO, D, BRANDT, T, TURNER, E. L, WATANABE, M, YAMADA, T, TAKAMI, H, USUDA, T, TAMURA, M, MUTO, T, HASHIMOTO, J, GRADY, C, FOLLETTE, K

“…Transitional circumstellar disks around young stellar objects have a distinctive infrared deficit around 10 mu m in their spectral energy distributions,…”
Get full text