类星体光谱识别及红移测量软件 A Spectrum Eye Recognition Assistant for Quasar Spectra 2014 年 6 月 30 Yuan Hailong

Background Spectral type –Phenomenology classification –Method: template matching QSO –Large redshift z –Limit wavelength range –Low SNR and other defects –Broad emission lines –Manual ajustment Not only for QSO –Star (O, B, A, F, G, K, M, WD, Carbon) –Galaxy QSO Template spectra with z=0 Broad emission lines ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

Supported files Image –JPG –PNG –GIF –… LAMOST fits SDSS fits Others types Location –Local –URL: http, ftp, file ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

Image file: main interface 1, file path 2, spectra 3, target info 4, flux scale & shift 5, wavelength scale & shift 6, popup menu Template Spectra Control –Color: blue –Mouse click, Mouse drag –Mouse wheel –Set reference line to calculate z ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

Fits file: Target information ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra RA, DEC, mag, obsdate, planid FitsHeader

Fits file: Flux adjustment ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

Fits file: Wavelength range adjustment Ca II 三 重线 ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra 3700~ ~ ~9000

Template selection Right click  PopupMenu  Plot template  –Default –Star –Galaxy –QSO –Others ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

Templates from SDSS spDR2-000_O-star.fit spDR2-001_OB-transition-star.fit spDR2-002_B-star.fit spDR2-003_A-star.fit spDR2-004_A-star.fit spDR2-005_FA-transition-star.fit spDR2-006_F-star.fit spDR2-007_F-star.fit spDR2-008_G-star.fit spDR2-009_G-star.fit spDR2-010_K-star.fit spDR2-011_M1-star.fit spDR2-012_M3-star.fit spDR2-013_M5-star.fit spDR2-014_M8-star.fit spDR2-015_L1-star.fit spDR2-016_Magnetic-white-dwarf.fit spDR2-017_Carbon-star.fit spDR2-018_Carbon-star.fit spDR2-019_Carbon-star.fit spDR2-020_White-dwarf.fit spDR2-021_B-white-dwarf.fit spDR2-022_Low-metallicity-K-subdwarf.fit spDR2-023_Early-type-galaxy.fit spDR2-024_Galaxy.fit spDR2-025_Galaxy.fit spDR2-026_Galaxy.fit spDR2-027_Late-type-galaxy.fit spDR2-028_Luminous-Red-Galaxy.fit spDR2-029_QSO.fit spDR2-030_QSO-with-some-BAL-activity.fit spDR2-031_QSO-with-some-BAL-activity.fit spDR2-032_High-luminosity-QSO.fit ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

Image file: pixel-wavelength transformation ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra Pixel 131  4000 Pixel 426  Right click  popupmenu  Set Spec Start/End

Show Spectral lines Right click  Plot lines –Qso ： 8 –Star ： 40 –Gal ： 12 Two aspects –Continuous spectra –Spectral lines ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

Batch process Local directory Spectral list file –CSV file –VOTable XML file Online IVOA-SSAP service MySQL database & Http server Output: –Spectra url –Template name –redshift ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

EXAMPLES FROM LAMOST

F RA= DEC= r mag=18.81 SN-g 2.3 SN-r 2.0 QSO~Unknown red shift 1.44 SDSS spectra ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

F RA= DEC= r mag= Sn-g 3.56 Sn-r 5.21 Star Redshift 1.51 SDSS spectra ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

M31010N33M RA= DEC= r mag=19.64 Sng=2.86 Snr=3.63 Pipeline=unknown 1d check=QSO Redshift 1.22 No SDSS spectra found ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

Z=0.31 snr2 magr18.71 Z=1.31 snr 4 magr18.95 Z=1.42 snr 2~4 magr19.65 Z=1.59 SNR 9~10 magr EG020922N055910M01 InputType=QSO count=790 star, no spectra galaxy no spectra star, no spectra star,no spectra

Z=1.94 snr 2~3 magr19.18 Z=2.71 snr 9 magr Z=3.43 snr 2~3 magr20.03 Z=3.59 snr 2~3 magr19.68 star, no spectra SDSS spectra star, no spectra

Follow up identification Low SNR Fake emission line Cross identification: SDSS Follow observation

Software status Version 1.0 –Used by some researchers from LAMOST extragalactic group Software installation –Java Virtual machine –Mac OS has JVM installed by default. Upgrade plan –To support more input file format, or user defined format –To develop comprehensive platform, mobile applicaion for fetching software and sending suggestions: Reference – – ASERA: A Spectrum Eye Recognition Assistant for Quasar Spectra

THANKS ！