1 / 33

Astronomical Surveys

Large Astronomical Surveys, Databases, and Archives Areg Mickaelian , Byurakan Astrophysical Observatory (BAO) Armenian Virtual Observatory ( ArVO ) JENAM-2011, SPS3, 5 July 2011, St. Petersburg, Russia. Astronomical Surveys. The Universe is very big

dung
Download Presentation

Astronomical Surveys

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Large Astronomical Surveys, Databases, and ArchivesAregMickaelian,ByurakanAstrophysical Observatory (BAO)Armenian Virtual Observatory (ArVO)JENAM-2011, SPS3, 5 July 2011, St. Petersburg, Russia

  2. Astronomical Surveys The Universe is very big There are ~40-100 billion galaxies, each containing billions of stars, nebulae, and other objects Most of objects are very like each other, and standard approach may be applied to study them Classical explanations for stellar configurations, inner structure, stellar atmopheres, and radiation mechanisms have been developed Unique objects are needed to study and understand new physical mechanisms, origin and evolution of stars, galaxies, and the Universe as a whole Stars:extreme colors, chemically peculiar stars, emission-line stars, non-optical sources, extended envelopes, variables (especially non-stable ones), binaries (especially close binaries), groups and clusters, etc. Galaxies: peculiar galaxies (blue, emission-line, etc.), starbursts (SB), active galactic nuclei (AGN), pairs (especially interacting ones), mergers, jets, non-optical sources, etc. Typically 5-10% of all objects

  3. POSS1 and POSS2 Palomar Observatory Sky Survey 1 (POSS1).1948-1958 Palomar Oschin 1.2m Schmidt telescope. Each plate covers 6.56.5 of the sky. Blue 103a-O, and red 103a-E. Limiting magnitudes 21.0m and 20.0m. • 937 different fields. Entire sky above  -33 • The southern limit was extended to about -45 by J.B. Whiteoak (100 plates); thus the survey as a whole includes 1037 fields UKST SERC J Southern Survey.1975-1987 UKST 1.2m Schmidt telescope Palomar Observatory Sky Survey 2 (POSS2).1987-2000 Blue IIIaJ, red IIIaF and IR IV-N. Limiting magnitudes: blue 22.5m and red 20.8m AAO-SES.1987-2000. IIIaJ, IIIaF and IV-N. POSS1 O (4050A) 103aO E (6452A) 103aE POSS2 j (4680A) IIIaJ+GG385, IIIaJ+GG395, IIaO+GG385 F (6452A) IIIaF+RG610, IIIaF+OG590, IIIaF+RG630 N (8060A) IVN+RG9, IVN+RG715 Digitized Sky Surveys – DSS1/DSS2

  4. APM, MAPS, USNO, and GSC Cambridge Automated Plate Measurement (APM). McMahon et al. 2000. 166,466,987 objects at |b|>20 and DEC>-33 for POSS1 epoch given as b and r magnitudes Minnesota Automated Plate Scanner (MAPS) catalog.Cabanela et al. 2003. 89,234,404 objects for POSS1 epoch given as O and E magnitudes United States Naval Observatory (USNO) A2.0 catalog.D.Monet, A.Bird, B.Canzian, et al. 1998. 526,280,881 objects for POSS1 epoch given as B and R magnitudes USNO-B1.0 catalog.D.G.Monet, S.E.Levine, B.Casian, et al. 2003. Positions, proper motions, magnitudes in various optical passbands, and star/galaxy estimators for 1,045,913,669 objects derived from 3,648,832,040 separate observations. Scans of 7,435 Schmidt plates taken during the last 50 years. The completeness is V=21; the accuracies are 0.2 for the positions at J2000, 0.3m in up to 5 colors, and 85% accuracy for distinguishing stars from non-stellar objects. Guide Star Catalog 2.3.2.Lasker et al. 2008. 945,592,683 objects of the whole sky measured for POSS2 epoch as j (Bj), F and N magnitudes • USNO-A2.0 1998 B1/R1 526,280,881 • APM 2000 b/r 166,466,987 • MAPS 2003 O/E 89,234,404 • USNO-B1.0 2003B1/2,R1/2,I 1,045,913,669 • GSC 2.3.2 2008 j/F/N 945,592,683

  5. Gamma-ray sky CGRO – Cosmic Gamma Ray Observatory, 1990~1300 discrete gamma-ray sources;~2700 gamma-ray bursts

  6. X-ray All-Sky Surveys ROSAT X-ray survey and catalogs: ROSAT BSC: 0.1-2.4 keV, 18,806 sources. The ROSAT all-sky survey bright source catalogue. Voges W., Aschenbach B., Boller T., et al. 1999. ROSAT FSC: 0.1-2.4 keV, 105,924 sources. ROSAT All-Sky Survey Faint source Catalogue. Voges W., Aschenbach B., Boller Th., et al. 2000. INTEGRAL

  7. ROSAT sky coverage

  8. Ultraviolet All-Sky Surveys Galaxy Evolution Explorer (GALEX). 28.04.2003. ¾ of the whole sky. 120 (FUV) and 220 A (NUV). All-sky survey to 20.5m , 4 deg survey to 26m Nearby Galaxy Survey (NGS), Deep (DIS), Medium (MIS), and All Sky Surveys (AIS, imaging) and smaller Spectroscopic (SPECTRA: imaging or “grism”) survey MultiMission Archive at Space Telescope Science Institute (MAST) GR4/GR5: 32180 objects, GR6: 5662 GalexView - Interface to the Galex data

  9. Infrared All-Sky Surveys Two Micron All Sky Survey (2MASS). Cutri R.M., Skrutskie M.F., Van Dyk S., et al., 2003. J(1.25) H(1.65) K_s(2.17), brighter than 1mJy sources (to a 3 sigma limiting sensitivity of 17.1, 16.4 and 15.3 mag in the three bands), resolution 2", 470,992,970 sources; ~300,000,000 stars and 1,650,000 galaxies. IRAS PSC: all-sky, 12, 25, 60, 100 micron (0.4, 0.5, 06, 1.0 Jy limit), 245,889 sources. IRAS Catalog of Point Sources, 1986. IRAS FSC: 180,000 sources. Moshir et al. 1990. AKARI (ASTRO-F or IRIS – InfraRed Imaging Surveyor). Feb 2006, 68.5 cm telescope, wavelength range 2-180 µm, 13 bands Infrared Camera (IRC), 9 and 18 μm, sensitivity ~ 50 and 120 mJy. Spatial resolution is about 9.4”, 877,091 sources (851 189 for 9 μm, 195 893 for 18 μm) Far-Infrared Surveyor (FIS), 65, 90, 140, and 160 μm, ~430,000 sources. Wide-Field Infrared Survey Explorer (WISE). NASA, 14.12.2009. 40 cm (16 inch), Four infrared wavelength bands at 3.4, 4.6, 12 and 22 microns. The field of view is 47 am wide. 257,000,000 sources.

  10. Radio All-Sky Surveys GB6: 6cm (4.85GHz), 0<DEC<75, S>=18mJy, 75,162 sources. 87GB: P.C.Gregory, J.J.Condon, ApJ., Suppl. Ser., 75, 1011, 1991. WN: G.de Bruyn, G.Miley, R.Rengelink, et al., Westerborck Northern Sky Survey, WENSS Collaboration, NFRA/ASTRON and Leiden Observatory, 1998. NVSS: all-sky, 21cm (1.4GHz), S>2.5mJy, 1-7 arcsec (>15mJy-2.5mJy), 1,773,484 sources. Condon et al. 1998. FIRST: 10,000 sq.deg., 21cm (1.4GHz), S>1mJy, 5 arcsec, 811,117 sources. Becker R.H., Helfand D.J., White R.L., Gregg M.D., Laurent-Muehleisen S.A., The FIRST Survey Catalog, Version 2003Apr11, Astrophys. J. 475, 479 (1997). White R.L., Becker R.H., Helfand D.J., Gregg M.D., The FIRST Survey Catalog of 1.4GHz radio sources, Astrophys. J. 475, 479 (1998). 8СA deep 38-MHz radio survey of the area declination > +60 degrees. Rees N., Mon. Not. R. Astron. Soc. 244, 233 (1990).

  11. 2dF surveys AAO 3.9m telescope 2 degree field survey (2dF) 2dF QSO Redshift Survey (2QZ) catalog: Croom et al. 2004: 25,000 quasars. 2dF Galaxy Redshift Survey (2dFGRS). 6dF surveys. 2QZ/6QZ Altogether ~50,000 objects

  12. Sloan Digital Sky Survey (SDSS)

  13. Sloan Digital Sky Survey (SDSS) 12 US universities, dozens institutes from other countries Years: 2000-2008; York et al. 2000. http://www.sdss.org Equipment: Apache Point 2.5m Ritchey-Chretien, Double MOS, CCD Region of the sky: |b|>30, >0; 11,663 (spec. 9380) deg2 Fields: 20481361 pix Bands: u(3551A), g(4686A), r(6165A), i(7481A), z(8931A) Limiting magnitudesati: 21m (images), 19m (spectra) Spectral range: 3800-9200A Spectral resolution: 2.5A (1800-2100) Phot. 357 mln objs (60.5 TB); spec: 1,640,960 objs (3.8 TB) 929,555 galaxies, 104,740+16,633 QSOs, 464,261 stars

  14. SDSS and 2MASS photometric bands

  15. Sur vey Years Telescopes and equipment Emulsions D at H Spectral range, A Area covered Vlim Objects of interest FBS 1965-1980 Byurakan 102/132 cm Schmidt, 1.5 prism IIa-F 1800 3400-6900 |b|>15 >-15 17,000deg2 17.5 UVX galaxies (Markarian galaxies) FBS BSOs SBS 1978-1991 Byurakan 102/132 cm Schmidt, 1.5/3/4 prisms 1800 900 280 3400-5300 4950-5400 6300-6950 |b|>30 49<<61 965 deg2 19 UVX galaxies, QSO/Sy, BCDG, hot stars Case 1983-1995 Kitt Peak 61/91 cm Burrell Schmidt, 1.8 prism IIIa-J 1350 3400-5300 |b|>30 >30 18 Blue stellar objects, UVX galaxies (CSO/CBS/CG) HQS 1985-1997 Calar-Alto 80 cm Schmidt, 1.7 prism IIIa-J 1390 3400-5300 |b|>20 >0 12,000deg2 19 QSOs, Hamburg/RASS HES 1990-1996 ESO 1m Schmidt, 4 prism IIIa-J 280 3400-5300 |b|>30<+2.5 9,000 deg2 18 QSOs SDSS 2000-2008 Apache Point 2.5m Ritchey-Chretien, Double MOS CCD res.: 2.5A 3800-9200 |b|>30 >0 11,600deg2 23 350million objects; 1 million galaxies, 100,000 QSOs IIIa-J IIIa-J+GG495 IIIa-F+RG2 IV-N Objective prism surveys and the SDSS

  16. Digitized First Byurakan Survey Teams:Byurakan Obs., Univ. Roma, Cornell Univ. Years:2002-2005 Instrument:Epson Expression 1680 Pro scanner Scanning options:1600 dpi (15.875 pix size), 16 bit, transparency (positive) mode, “scanfits” Plate size: 96019601 pix, 176 MB file Spectra: 107 5 pix (1700 in length) Dispersion: 33 Å/pix average (22-60 Å/pix), 28.5 at H Spectral resolution:50Å Astrometric solution: 1rms accuracy Scale:1.542/pix Photometry: 0.3m accuracy Data volume: 1874 plates, ~400 GB Number of objs:~20,000,000 (~40,000,000 spectra)

  17. DFBS low-dispersion spectra

  18. DFBS low dispersion spectra

  19. Spectroscopic surveys: past, present, and future

  20. Spectroscopic surveys: past, present, and future

  21. Chandra Deep Field South Data • Deep Mega-second Chandra exposures of Chandra Deep Field South & Hubble Deep Field North have laid the foundation for: • GOODS: • Great Observatories Origins Deep Survey • Hubble • Chandra • SST (SIRTF) • ESO VLT, WFI • VLA • A Multiwavelength Resource – Radio to X-ray of high quality • An 'open' resource – available to all

  22. COSMOS

  23. Astronomical ArchivesWide-Field Plate DataBase – WFPDBhttp://www.skyarchive.org 414archives, 2,204,725 plates from 125observatories, obtained between 1879 and 2002 Including 2,128,330 direct and 64,095 objective prism plates (Harvard – 600,000; Sonneberg – 270,000; Italian archive – 87,000; Kyiv – 85,000; ГАИШ – 50,000; etc.)

  24. Multimission Archive at STScI

  25. HEASARC

  26. IRSA

  27. Astronomical Databases

More Related