Data Mining and Processing for ESP-ELS: Progress Report Alex Lobel & Yves Frémat Royal Observatory of Belgium.

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Presentation transcript:

Data Mining and Processing for ESP-ELS: Progress Report Alex Lobel & Yves Frémat Royal Observatory of Belgium

Searching on-line digital spectral catalogs and telescope archives for optical stellar emission line spectra for GAIA ESP-ELS processing: status Nov Be: 407 : OHP-Elodie Arch + HPOL MAST Arch (Bjorkman & Hoffman 89-94)‏ AeBe: 27 : OHP-Elodie + HPOL MAST Arch PNe: 748 : MASH Catalog in Vizier (Parker et al. 2006, MNRAS 373, 79)‏ Pre MS: 3 : OHP-Elodie Arch T Tau: 21 : OHP-Elodie Arch + HPOL MAST Arch Symb: 17 : HPOL MAST Arch WR-WN: 156 : Vizier (Torres-Dodgen & Massey 1988, AJ 96, 1076) + HPOL MAST WR-WC: 59 : Vizier (Torres-Dodgen & Massey 1988, AJ 96, 1076) + HPOL MAST dMe: 52 : SDSS-DR5 (West et al. 2008, AJ 135, 785)‏ Catacl & Nova: 39 : HPOL MAST Arch RS CVn: 21 : HPOL MAST Arch Mira Carb: 70 : Vizier (Barnbaum et al. 1996, ApJS 105, 419)‏ Total: 1620 Em. Class No. of spectra Archive / catalog

GOG Input spectrum: Be-star 105 Tau B2Ve V=5.92 m Å,  = 10 Å 407 Be-star spectra from OHP-Elodie and MAST (HPOL) Archives (HPOL spectro-polarimetry no longer available at Kitt Peak) GOG V6.0 Combined & Epoch Flux and Sigma Bp/Rp spectra computed for G=15 m. no noise or LSF added so far GOG epoch Bp/Rp flux spectraGOG epoch Bp/Rp sigma spectra

Bp/Rp epoch spectra currently used to define emission line indexes for separating out various emission line star classes

Clear relationships between various indexes can provide important clues for developing robust em. line star class. algos

748 PNe spectra from MASH Catalog (H  survey of SGP) vizier.u-strasbg.fr/vizier/MASH from 2-m class telescopes MSSSO 2.3m, SAAO 1.9m, ESO 1.5m, OHP 1.9m Å ; Å FWHM

138 Wolf-Rayet WN & WC stars in SMC and LMC from Torres-Dodgen & Massey 1988, AJ 96, 1076; Å,  ~10 Å, Cerro-Tololo (CITO) 1.5m and 77 spectra of 7 galactic WR stars from HPOL Archive

52 active M dwarfs (dMe) from SDSS-DR5; West et al. 2008, AJ 135, 785 SLOAN cas.sdss.org/astrodr5/en (database of ~61,000 M-star spectra) Å, R= (69 km/s pp), APO 2.5m

 Conlcusions: Data mining of on-line spectral catalogs and archives (Vizier, MAST, HPOL, SDSS5, OHP-Elodie) em. line star Bp/Rp spectra processed with GOGv6.0 for G=15 mag. Pairs of H , H, H , He II, CIV, & [O III] indexes defined for GOG output spectra in em. line star class discrimination tests. Strong emission line stars can be well separated but for weaker emission line stars RVS spectra are needed. The near future: Better Bp/Rp coverage from ALFOSC (586 spectra of 99 peculiar stars) & searching more on-line spectral catalogs & archives. Testing of Neural network algos (Weka), Decision tree analysis, Fast segmentation algos.