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J/AJ/136/2050       SEGUE stellar parameter pipeline. II.           (Lee+, 2008)

The SEGUE stellar parameter pipeline. II. Validation with galactic globular and open clusters. Lee Y.S., Beers T.C., Sivarani T., Johnson J.A., An D., Wilhelm R., Allende Prieto C., Koesterke L., Fiorentin P.R., Bailer-Jones C.A.L., Norris J.E., Yanny B., Rockosi C., Newberg H.J., Cudworth K.M., Pan K. <Astron. J., 136, 2050-2069 (2008)> =2008AJ....136.2050L
ADC_Keywords: Surveys ; Clusters, open ; Populations, stellar ; Photometry, SDSS ; Radial velocities Keywords: methods: data analysis - stars: abundances - stars: fundamental parameters - surveys - techniques: spectroscopic Abstract: We validate the accuracy and precision of the current SEGUE (Sloan Extension for Galactic Understanding and Exploration) Stellar Parameter Pipeline (SSPP), which determines stellar atmospheric parameters (effective temperature, surface gravity, and metallicity) and radial velocities (RVs), by comparing these estimates for selected members of three globular clusters (M 13, M 15, and M 2) and two open clusters (NGC 2420 and M 67) to the literature values. Spectroscopic and photometric data obtained during the course of the original Sloan Digital Sky Survey (SDSS-I) and its first extension (SDSS-II/SEGUE) are used to determine atmospheric parameter and RV estimates for stars in these clusters. Description: The SDSS obtains scans of the sky using the ARC 2.5m telescope on Apache Point, New Mexico. These data are collected in five broadbands (u, g, r, i, z) with central wavelengths 3551, 4686, 6166, 7480, and 8932Å, respectively, using an imaging array of 30 (6x5) 2048x2048 Tektronix CCDs. The spectroscopy discussed in the present paper was obtained during the course of SEGUE tests and normal SEGUE observations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 157 682 Properties of selected member stars of M 13, M 15, M 2, NGC 2420, and M 67
See also: II/294 : SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009) J/AJ/136/2070 : SEGUE stellar parameter pipeline. III. (Allende Prieto+, 2008) J/AJ/141/89 : SEGUE stellar parameter pipeline. IV. (Smolinski+, 2011) J/AJ/141/90 : SEGUE stellar parameter pipeline. V. (Lee+, 2011) Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 8 A8 --- GlCl Globular Cluster name 10- 14 I5 --- MJD MJD part of spectrum designation (1) 15 A1 --- --- [-] 16- 19 I4 --- Plate Plate number of spectrum designation (1) 20 A1 --- --- [-] 21- 23 I3 --- Fib Fiber number of spectrum designation (1) 25- 35 F11.7 deg RAdeg Right Ascension in decimal degrees (J2000) 37- 45 F9.6 deg DEdeg Declination in decimal degrees (J2000) 47- 52 F6.1 km/s RV Radial velocity 54- 57 F4.1 km/s e_RV 1sigma error in RV (2) 59- 62 I4 K Teff Effective temperature estimate (3) 64- 66 I3 K e_Teff 1sigma error in Teff (3) 68- 71 F4.2 [cm/s2] log(g) Log of estimated surface gravity (3) 73- 76 F4.2 [cm/s2] e_log(g) 1sigma error in log(g) (3) 78- 82 F5.2 [-] [Fe/H] Metallicity (3) 84- 87 F4.2 [-] e_[Fe/H] 1sigma error in [Fe/H] (3) 89- 94 F6.3 mag umag SDSS u band magnitude (4) 96-100 F5.3 mag e_umag 1σ error in umag 102-107 F6.3 mag gmag SDSS g band magnitude (4) 109-113 F5.3 mag e_gmag 1σ error in gmag 115-120 F6.3 mag rmag SDSS r band magnitude (4) 122-126 F5.3 mag e_rmag 1σ error in rmag 128-133 F6.3 mag imag SDSS i band magnitude (4) 135-139 F5.3 mag e_imag 1σ error in imag 141-146 F6.3 mag zmag SDSS z band magnitude (4) 148-152 F5.3 mag e_zmag 1σ error in zmag 154-157 F4.1 --- <S/N> Average signal-to-noise (5)
Note (1): The spectrum designation is made as MJD-Plate-Fiber from the Modified Julian Date (5 digits), the spectroscopic plug plate number (four digits), and the fiber used (three digits). Note (2): Computed from ELODIE template matching. Note (3): Adopted values from the SSPP (Lee et al., 2008AJ....136.2022L); the quoted internal error is the listed uncertainty in each value. Note (4): The photometric errors in each band are based on the PHOTO pipeline (Lupton et al. 2001, ASP Conf; Ser., 238, 269). Note (5): Per pixel of the spectra, calculated over the range 385-600nm.
History: From electronic version of the journal References: Lee et al., Paper I 2008AJ....136.2022L Allende Prieto et al., Paper III 2008AJ....136.2070A, Cat. J/AJ/136/2070 Smolinski et al., Paper IV 2011AJ....141...89S, Cat. J/AJ/141/89 Lee et al., Paper V 2011AJ....141...90L, Cat. J/AJ/141/90
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 18-May-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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