SDSS-KSG 08 Workshop1 The SDSS DR7 and KIAS SDSS mirror Won-Kee Park ARCSEC, Sejong University 2008 SDSS-KSG Workshop
SDSS-KSG 08 Workshop SDSS – Current Status DR6 is the current public release Released on Jun DR7.1 is open to SDSS collaboration Last week “DR7” is planned to be released to public around Oct Final release of SDSS II - contains all observational data through the end of the project.
SDSS-KSG 08 Workshop SDSS DR7 – Release Schedule Old plan DR7 in 2008 Spring Contains the data observed till 2007 Summer DR8, the final release of SDSS-II, at the end of 2008 Contains the data till the end of SDSS-II, Jun. 2008
SDSS-KSG 08 Workshop SDSS DR7 – Release Schedule New plan DR7.1 to collaboration group only Announced on Feb DR7.2(“DR7”), the final release of SDSS II, on Oct. 2008
SDSS-KSG 08 Workshop SDSS DR7.1 Coverage Imaging Legacy survey Coverage : 8417 square degree footprint area is same with that of DR6. i.e. No more legacy imaging observation since DR6 SEGUE Coverage : 2400 square degree ~ 1240 square degree more than DR6
SDSS-KSG 08 Workshop SDSS DR7.1 Coverage Spectroscopy Legacy survey Coverage : 7470 square degrees Almost all the gaps are now filled in the northern galactic hemisphere Spectra obtained for over ~1,200,000 objects SEGUE Coverage : 780 square degree ( 125 more) Spectra obtained for over ~150,000 objects
SDSS-KSG 08 Workshop DR7.1 Legacy survey spectroscopy coverage
SDSS-KSG 08 Workshop DR7.1 Legacy survey spectroscopy coverage
SDSS-KSG 08 Workshop DR6 Legacy survey spectroscopy coverage
SDSS-KSG 08 Workshop DR7.1 Legacy survey imaging coverage
SDSS-KSG 08 Workshop DR7.1 Legacy survey imaging coverage
SDSS-KSG 08 Workshop
SDSS-KSG 08 Workshop
SDSS-KSG 08 Workshop SDSS DR7.1 - Depth Imaging
SDSS-KSG 08 Workshop
SDSS-KSG 08 Workshop SDSS DR7.1 - Depth Spectroscopy
SDSS-KSG 08 Workshop NYU Value Added Galaxy Catalog A galaxy spectrscopic catalog not very large in size, for easy handling in a computer Based on Princeton Reduction for photometry & spectroscopy Results in lower variance in large-scale errors in the calibration in photometry Also offers the matching results with other catalogs RC3, 2dFGRS, 2MASS..
SDSS-KSG 08 Workshop NYU Value Added Galaxy Catalog DR7 – based on SDSS DR7.1 Released on Jan to SDSS collaboration Catalogs Includes SDSS Main galaxy samples Contains ~2,600,000 entries Preparation for further application is being done at KIAS
SDSS-KSG 08 Workshop About SDSS DR7(7.2) Imaging Coverage … Spectroscopy Coverage Include the result of observation till spring Will fill the gaps completely (hopefully)
SDSS-KSG 08 Workshop About SDSS DR7(7.2) Improvements in the data processing Spectroscopy - improvement in flat-fielding & wavelength calibration Affect stellar photometry, but very minor effects for most extragalactic objects Imaging - improvement in image processing for the crowded field in lower galactic latitute region
SDSS-KSG 08 Workshop KIAS SDSS Mirror Hardware Windows 2003 Server machine Xeon dual core, 4GB RAM, 14TB disk space Linux machine 14TB disk space Quad core, 4GB RAM, 14TB disk space Software MS-SQL for SDSS database management
SDSS-KSG 08 Workshop KIAS SDSS Mirror Available data Catalogs for BESTDR6, and SEGUEDR6 dataset Raw image - DR5 dataset Data Access Data can be accessed within KIAS via NFS mount, for example. Web interface will be available soon
SDSS-KSG 08 Workshop KIAS SDSS Mirror Web interface (for CAS) Will offer identical web interfaces as those in SDSS CAS DR6 ( Various image tools
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SDSS-KSG 08 Workshop ols/chart/list.asp
SDSS-KSG 08 Workshop KIAS SDSS Mirror Current Status DB build for DR6 data query is being done now at KIAS (has been building since last friday…).. And Problem Access from outside of KIAS is NOT allowed due to internet security problem So? Access will be allowed after the installation of firewall “soon” At present, guest KIAS is offered upon request, to access the KIAS host as a gateway to KIAS SDSS mirror
SDSS-KSG 08 Workshop Thank you