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Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/326400
Description: A new set of very high signal-to-noise (S/N > 100/1), medium-resolution (R ~ 3000) optical spectra have been obtained for 302 of the candidate "weak-metal" stars selected by Bidelman & MacConnell. We ... More
Full Text: Full Text
Reviewed: Reviewed
Date: 2014
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/306408
Description: The entire evolution of the Milky Way, including its mass-assembly and star-formation history, is imprinted onto the chemo-dynamical distribution function of its member stars, f(x, v, [X/H]), in the m ... More
Full Text: Full Text
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/274613
Description: We describe a method for the determination of stellar [C/Fe] abundance ratios using low-resolution (R = 2000) stellar spectra from the Sloan Digital Sky Survey (SDSS) and its Galactic sub-survey, the ... More
Full Text: Full Text
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/220844
Description: Chemical compositions are determined based on high-resolution spectroscopy for 137 candidate extremely metal-poor (EMP) stars selected from the Sloan Digital Sky Survey (SDSS) and its first stellar ex ... More
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/220883
Description: We explore the stellar metallicity distribution function of the Galactic halo based on SDSS ugriz photometry. A set of stellar isochrones is calibrated using observations of several star clusters and ... More
Reviewed: Reviewed
Date: 2013
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/221096
Description: The orbital motions of halo stars in the Milky Way reflect the orbital motions of the progenitor systems in which they formed, making it possible to trace the mass-assembly history of the Galaxy. Dire ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/212788
Description: Carbon-enhanced metal-poor (CEMP) stars in the halo components of the Milky Way are explored, based on accurate determinations of the carbon-to-iron ([C/Fe]) abundance ratios and kinematic quantities ... More
Reviewed: Reviewed
Date: 2012
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/171049
Description: Carollo et al. have recently resolved the stellar population of the Milky Way halo into at least two distinct components, an inner halo and an outer halo. This result has been criticized by Schönrich ... More
Reviewed: Reviewed
Date: 2010
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/213716
Description: The structure and kinematics of the recognized stellar components of the Milky Way are explored, based on well-determined atmospheric parameters and kinematic quantities for 32360 "calibration stars" ... More
Reviewed: Reviewed
Authors: Yanny, Brian | Rockosi, Constance M | Newberg, Heidi Jo | Knapp, Gillian R | Adelman-Mccarthy, Jennifer K | Alcorn, Bonnie | Allam, Sahar S | Allende-Prieto, Carlos | An, Doekkeun | Anderson, Kurt S. J | Anderson, Scott F | Bailer-Jones, Coryn A L | Bastian, Steven | Beers, Timothy C | Bell, Eric F | Belokurov, Vasily | Bizyaev, Dmitriy V | Blythe, Norman | Bochanski, John J | Boroski, William N | Brinchmann, Jarle | Brinkmann, Jonathan O. N | Brewington, Howard J | Carey, Larry N | Cudworth, Kyle M | Evans, Michael L | Evans, N. W | Gates, Evalyn I | Gänsicke, Boris T | Gillespie, Bruce A | Gilmoure, Gerald | Nebot Gomez-Moran, Ada | Grebel, Eva K | Greenwell, Jim | Gunn, James E | Jordan, Cathy | Jordan, Wendell | Harding, Paul | Harris, Hugh C | Hendry, John S | Holder, Diana | Ivans, Inese I | Ivezic, Zeljko | Jester, Sebastian | Johnson, Jennifer | Kent, Stephen M | Kleinman, Scot J | Kniazev, Alexei Yu | Krzesinski, Jurek | Kron, Richard G | Kuropatkin, Nikolay | Lebedeva, Svetlana | Lee, Young Sun | Leger, R. French | Lepine, Sebastien | Levine, Stephen | Lin, Huan | Long, Dan C | Loomis, Craig P | Lupton, Robert H | Malanushenko, Olena | Malanushenko, Viktor | Margon, Bruce | Martinez-Delgado, David | McGehee, Peregrine M | Monet, David | Morrison, Heather L | Munn, Jeffrey A | Nielsen, Eric H | Nitta, Atsuko | Norris, John E | Oravetz, Daniel J | Owen, Russell E | Padmanabhan, Nikhil | Pan, Kaike | Peterson, R. S | Pier, Jeffrey R | Platson, Jared | Re Fiorentin, P | Richards, Gordan T | Rix, Hans-Walter | Schlegel, David J | Schneider, Donald P | Schreiber, Matthias R | Schwope, Axel D | Sibley, Valena C | Simmons, Audrey E | Snedden, Stephanie A | Smith, J. Allyn | Stark, Larry | Stauffer, Fritz | Steinmetz, Matthias | S toughton, Christopher | SubbaRao, Mark U | Szkody, Paula | Szalay, Alex S | Thakar, Aniruddha | Thirupathi, Sivarani | Tucker, Douglas L | Uomoto, Alan K | Vanden Berk, Daniel E | Vidrih, Simon | Wadadekar, Yogesh | Watters, Shannon | Wilhelm, Ron | Wyse, Rosemary F. G | Yarger, Jean | Zucker, Daniel Benjamin
Date: 2009
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/1147327
Description: 23 page(s)
Reviewed: Reviewed
Authors: Abazajian, Kevork N | Adelman-Mccarthy, Jennifer K | Bailer-Jones, Coryn A L | Lin, Huan | Long, Dan C | Loomis, Craig P | Loveday, Jonathan | Lupton, Robert H | Magnier, Eugene A | Malanushenko, Olena | Malanushenko, Viktor | Mandelbaum, Rachel | Margon, Bruce | Barentine, John C | Marriner, John P | Mart�nez-Delgado, David | Matsubara, Takahiko | McGehee, Peregrine M | McKay, Timothy A | Meiksin, Avery A | Morrison, Heather L | Mullally, Fergal | Munn, Jeffrey A | Murphy, Tara | Bassett, Bruce A | Nash, Thomas | Nebot, Ada | Nielsen, Eric H | Newberg, Heidi Jo | Newman, Peter R | Nichol, Robert C | Nicinski, Tom | Nieto-Santisteban, Maria A | Nitta, Atsuko | Okamura, Sadanori | Becker, Andrew C | Oravetz, Daniel J | Ostriker, Jeremiah P | Owen, Russell E | Padmanabhan, Nikhil | Pan, Kaike | Park, Changbom | Pauls, George | Peoples, Jr., John R | Percival, William J | Peir, Jeff R | Beers, Timothy C | Pope, Adrian C | Pourbaix, Dimitri | Price, Paul A | Purger, Norbert | Quinn, Thomas R | Raddick, M. Jordan | Re Fiorentin, Paola | Richards, Gordan T | Richmond, Michael W | Reiss, Adam G | Bell, Eric F | Rix, Hans-Walter | Rockosi, Constance M | Sako, Masao | Schlegel, David J | Schneider, Donald P | Schlolz, Ralf-Dieter | Schneider, Matthias R | Schwope, Axel D | Seljak, Uros | Sesar, Branimir | Berlind, Andreas A | Sheldon, Erin Scott | Shimasaku, Kazu | Sibley, Valena | Simmons, Audrey E | Sivarani, Thirupathi | Smith, J. Allyn | Smith, Martin C | Smolcic, Vernesa | Snedden, Stephanie A | Stebbins, Albert | Belokurov, Vasily | Steinmetz, Matthias | Stoughton, Christopher | Strauss, Michael A | SubbaRao, Mark U | Suto, Yasushi | Szalay, Alex S | Szapudi, Istvan | Szkody, Paula | Tanaka, Masayuki | Tegmark, Max | Berman, Eileen | Teodoro, Luis F | Thakar, Aniruddha | Tremonti, Christy A | Tucker, Douglas L | Uomoto, Alan K | Vanden Berk, Daniel E | VandenBerg, Jan | Vidrih, Simon | Vogeley, Michael S | Voges, Wolfgang H | Bernardi, Mariangela | Vogt, Nicole P | Wadadekar, Yogesh | Watters, Shannon | Weinberg, David H | West, Andrew A | White, Simon D. M | Wilhite, Brian C | Wonders, Alainna C | Yanny, Brian | Yocum, Dan R | Ag�eros, Marcel A | Bickerton, Steven J | York, Donald G | Zehavi, Idit | Zibetti, Stefano. | Bizyaev, Dmitriy V | Blakeslee, John P | Blanton, Michael R | Bochanski, John J | Boroski, William N | Brewington, Howard J | Brinchmann, Jarle | Brinkmann, Jonathan O N | Brunner, Robert J | Allam, Sahar S | Budav�ri, Tam�s | Carey, Larry N | Carliles, Samuel | Carr, Michael A | Castander, Francisco Javier | Cinabro, David A | Connolly, Andrew J | Csabai, Istvan | Cunha, Carlos E | Czarapata, Paul C | Allende-Prieto, Carlos | Davenport, James R. A | De Haas, Ernst | Dilday, Ben | Doi, Mamoru | Eisenstein, Daniel J | Evans, Michael L | Evans, N W | Fan, Xiaohui | Friedman, Scott D | Frieman, Joshua A | An, Doekkeun | Fukugita, Masataka | G�nsicke, Boris T | Gates, Evalyn I | Gillespie, Bruce | Gilmour, Gerry | Gonzales, Belinda | Gonzales, Carlos F | Grebel, Eva K | Gunn, James E | Gy�ry, Zsuzsanna | Anderson, Kurt S. J | Hall, Patrick B | Harding, Paul | Harris, Frederick H | Harvenek, Michael | Hawley, Suzanne L | Hayes, Jeffrey J. E | Heckman, Timothy M | Hendry, John S | Hennessy, Gregory S | Hindsley, Robert B | Anderson, Scott F | Hoblitt, J | Hogan, Craig J | Hogg, David William | Holtzman, Jon A | Hyde, Joseph B | Ichikawa, Shin-ichi | Ichikawa, Takashi | Im, Myungshin | Ivezic', Zeljko | Jester, Sebastian | Annis, James A | Jiang, Linhua | Johnson, Jennifer | Jorgensen, Anders M | Juric', Mario | Kent, Stephen M | Kessler, Rick | Kleinman, Scot J | Knapp, Gillian R | Konishi, Kohki | Kron, Richard G | Bachall, Neta A | Krzesinski, Jurek | Kuropatkin, Nikolay | Lampeitl, Hubert | Lebedeva, Svetlana | Lee, Myung-Gyoon | Lee, Young Sun | Leger, R. French | L�pine, S�bastien | Li, Nolan | Lima, Marcos M
Date: 2009
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/1186444
Description: This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes 11 ... More
Reviewed: Reviewed
Date: 2008
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/216134
Description: The chemical compositions of seven CEMP turnoff stars are determined from high-resolution spectroscopy. Five are selected from the SDSS SEGUE sample of metal-poor stars. Another star chosen from the S ... More
Reviewed: Reviewed
Date: 2008
Language: eng
Resource Type: conference paper
Identifier: http://hdl.handle.net/1959.14/216045
Description: Massive spectroscopic surveys of stars in the thick disk and halo populations of the Galaxy hold the potential to provide strong constraints on the processes involved in (and the timing of) the assemb ... More
Authors: Adelma-Mccarthy, Jennifer K | Agüeros, Marcel A | Barentine, John C | Neilsen, Eric H | Newberg, Heidi J O | Nichol, Robert C | Nicinski, Tom | Nieto-Santisteban, Maria A | Nitta, Atsuko | Okamura, Sadanori | Owen, Russell E | Oyaizu, Hiroaki | Padmanabhan, Nikhil | Bassett, Bruce A C C | Pan, Kaike | Park, Changbom | Peoples, John R | Pier, Jeffrey R | Pope, Adrian C | Purger, Norbert | Raddick, M Jordan | Fiorentin, Paola R E | Richards, Gordan T | Richmond, Michael W | Becker, A C | Riess, Adam G | Rix, Hans Walter | Rockosi, Constance M | Sako, Masao | Schlegel, David J | Schneider, Donald P | Schreiber, Matthias R | Schwope, Axel D | Seljak, Uros | Sesar, Branimir | Beers, Timothy C | Sheldon, Erin Scott | Shimasaku, Kazu | Sivarani, Thirupathi | Smith, J Allyn | Snedden, Stephanie A | Steinmetz, Matthias | Strauss, Michael A | Subbarao, Mark U | Suto, Yasushi | Szalay, Alex S | Bell, E F | Szapudi, Istvan | Szkody, Paula | Tegmark, Max | Thakar, Aniruddha | Tremonti, Christy A | Tucker, Douglas L | Uomoto, Alan K | Vanden Berk, Daniel E | VandenBerg, Jan | Vidrih, S | Berlind, Andreas A | Vogeley, Michael S | Voges, Wolfgang H | Vogt, Nicole P | Wadadekar, Yogesh | Weinberg, David H | West, Andrew A | White, Simon D M | Wilhite, Brian C | Yanny, Brian | Yocum, Dan R | Bernardi, Mariangela | York, D G | Zehavi, Idit | Zucker, Daniel Benjamin | Blanton, Michael R | Bochanski, John J | Boroski, William N | Allam, Sahar S | Brinchmann, Jarle | Brinkmann, Jonathan O N | Brunner, Robert J | Budavári, Tamas | Carliles, Samuel | Carr, Michael Austin | Castander, Francisco Javier | Cinabro, David A | Cool, Richard J | Covey, Kevin R | Prieto, Carlos Allende | Csabai, Istvan | Cunha, Carlos E | Davenport, J R A | Dilday, Ben | Doi, Mamoru | Eisenstein, D J | Evans, Michael L | Fan, Xiaohui H | Finkbeiner, Douglas P | Friedman, Scott D | Anderson, K S J | Frieman, Joshua A | Fukugita, Masataka | Gansicke, B. T | Gates, Evalyn I | Gillespie, Bruce A | Glazebrook, Karl G | Gray, Jim I M | Grebel, E K | Gunn, James E | Gurbani, Vijay K | Anderson, Scott F | Hall, Patrick B | Harding, Paul | Harvanek, Michael | Hawley, Suzanne L | Hayes, Jeffrey J E | Heckman, Timothy M | Hendry, John S | Hindsley, Robert B | Hirata, Christopher M | Hogan, Craig J | Annis, James A | Hogg, David William | Hyde, Joseph B | Ichikawa, Shin Ichi | Ivezic, Zeljko | Jester, Sebastian | Johnson, Jennifer Adrienne | Jorgensen, Anders M | Juric, Mario | Kent, Stephen M | Kessler, R | Bahcall, Neta A | Kleinman, Scot J | Knapp, Gillian R | Kron, Richard G | Krzesinski, Jurek | Kuropatkin, Nikolay | Lamb, Donald Q | Lampeitl, Hubert | Lebedeva, Svetlana | Lee, Young Sun | Leger, R French | Bailer-Jones, Coryn A L | Lepine, Sebastien | Lima, Marcos M | Lin, Huan Cai | Long, Dan C | Loomis, Craig P | Loveday, Jon O N | Lupton, Robert H | Mandelbaum, Rachel | Malanushenko, Olena | Malanushenko, Viktor | Baldry, Ivan K | Margon, Bruce | Marriner, John P | Martinez-Delgado, David | Matsubara, Takahiko | McGehee, Peregrine M | Mckay, T | Meiksin, Avery A | Morrison, Heather L | Munn, Jeffrey A | Nakajima, Reiko
Date: 2008
Subject Keyword: 020100 Astronomical and Space Sciences | This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and parameters of roughly 287 million objects over 9583 deg2, including scans over a large range of Galactic latitudes and longitudes. The survey also includes 1.27 million spectra of stars, galaxies, quasars, and blank sky (for sky subtraction) selected over 7425 deg2. This release includes much more stellar spectroscopy than was available in previous data releases and also includes detailed estimates of stellar temperatures, gravities, and metallicities. The results of improved photometric calibration are now available, with uncertainties of roughly 1% in g, r, i, and z, and 2% in u, substantially better than the uncertainties in previous data releases. The spectra in this data release have improved wavelength and flux calibration, especially in the extreme blue and extreme red, leading to the qualitatively better determination of stellar types and radial velocities. The spectrophotometric fluxes are now tied to point-spread function magnitudes of stars rather than fiber magnitudes. This gives more robust results in the presence of seeing variations, but also implies a change in the spectrophotometric scale, which is now brighter by roughly 0.35 mag. Systematic errors in the velocity dispersions of galaxies have been fixed, and the results of two independent codes for determining spectral classifications and redshifts are made available. Additional spectral outputs are made available, including calibrated spectra from individual 15 minute exposures and the sky spectrum subtracted from each exposure. We also quantify a recently recognized underestimation of the brightnesses of galaxies of large angular extent due to poor sky subtraction | the bias can exceed 0.2 mag for galaxies brighter than r = 14 mag
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/1186638
Description: 17 page(s)
Reviewed: Reviewed
Date: 2007
Language: eng
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.14/216044
Description: The halo of the Milky Way provides unique elemental abundance and kinematic information on the first objects to form in the Universe, and this information can be used to tightly constrain models of ga ... More
Reviewed: Reviewed
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