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142. Fermi GBM Daily Data
- ID:
- ivo://nasa.heasarc/fermigdays
- Title:
- Fermi GBM Daily Data
- Short Name:
- FERMIGDAYS
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The Fermi GBM Daily Data database table contains entries for each day for which GBM data has been processed. The daily data products consist of GBM data that are produced continuously regardless of whether a burst occurred. Thus these products are the count rates from all detectors, the monitoring of the detector calibrations (e.g., the position of the 511 keV line), and the spacecraft position and orientation. Some days may also have event lists known as time-tagged event (TTE) files associated with them. These TTE files have the same format as those produced for bursts. Due to the large data volume associated with TTE files, only certain portions of the day considered of scientific interest to the instrument team will have TTE data. The underlying Level 0 data arrive continuously with each Ku band downlink. However, the GBM Instrument Operations Center (GIOC) will form FITS files of the resulting Level 1 data covering an entire calendar day (UTC); these daily files are then sent to the FSSC. Consequently, the data latency is about one day: the first bit from the beginning of a calendar day may arrive a few hours after the day began while the last bit will be processed and added to the data product file a few hours after the day ended. These data products may be sent to the FSSC file by file as they are produced, not necessarily in one package for a given day. Note that the data may include events from slightly before and slightly after the day official boundaries, which will be reflected in the start and stop times in the table. Consequently, some events may be listed in files for two consecutive days (e.g., at the end of one and the beginning of the next). Due to the continuous nature of GBM processing, new data files may arrive after the day has been included in Browse and reprocessed version may also arrive at any time. The reprocessed data will have the version number incremented (see file name conventions below). Browse will automatically download the latest versions of the data files. This database table was created by and is updated by the HEASARC based on information supplied by the Fermi Project. It is updated on a daily basis. The tte_flag parameter was added to the table in July 2010. This is a service provided by NASA HEASARC .
- ID:
- ivo://nasa.heasarc/fermilweek
- Title:
- Fermi LAT Weekly Data
- Short Name:
- FERMILWEEK
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The Fermi LAT Weekly Data database table provides access to LAT data binned into weekly files by the FSSC's data servers. For each week, the FSSC provides two FITS files: an all-sky file of photons containing positions, energies, etc. and a spacecraft pointing history file. The underscore separated fields in the file names indicate the file type (photon or spacecraft), the Fermi mission week (e.g., w009 = week 9), the processing version (which will change with each major reprocessing of LAT data), and a version number for the file itself. Note that currently the data may include events from slightly after the official week boundaries, which will be reflected in the start and stop times in the table. Any "run" of LAT data the FSSC receives that starts in a given week is put into the weekly file for that week and not broken up. Note additional selections must be applied to the weekly files prior to use in a data analysis. See <a href="http://fermi.gsfc.nasa.gov/ssc/data/analysis/documentation/Cicerone/Cicerone_Data_Exploration/Data_preparation.html">LAT Data Selection Recommendations</a> and <a href="http://fermi.gsfc.nasa.gov/ssc/data/analysis/LAT_caveats.html">Caveats About Analyzing LAT Data</a> for more information. For queries based on position, energy, and exact times, use the <a href="http://fermi.gsfc.nasa.gov/cgi-bin/ssc/LAT/LATDataQuery.cgi">FSSC's LAT data server</a>. This database table is created by the HEASARC from FITS tables received from the Fermi Science Support Center (FSSC). It is updated on a weekly basis. This is a service provided by NASA HEASARC .
144. Fermi Map: Band 1
- ID:
- ivo://nasa.heasarc/skyview/fermi
- Title:
- Fermi Map: Band 1
- Short Name:
- FERMI
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This survey sums all data observed by the Fermi mission up to week 396. This version of the Fermi survey are intensity maps where the summed counts data are divided by the exposure for each pixel (in cm^2 s) and the area of the pixel. Data is broken into 5 energy bands <ul> <li> 30-100 MeV Band 1 </li> <li> 100-300 MeV Band 2 </li> <li> 300-1000 MeV Band 3 </li> <li> 1-3 GeV Band 4 </li> <li> 3-300 GeV Band 5 </li> </ul> The SkyView data are based upon a Cartesian projection of the counts divided by the exposure maps. In the Cartesian projection pixels near the pole have a much smaller area than pixels on the equator, so these pixels have smaller integrated flux. When creating large scale images in other projections users may wish to make sure to compensate for this effect the flux conserving clip-resampling option. Provenance: Fermi LAT instrument team, NASA Goddard Space Flight Center. This is a service of NASA HEASARC.
145. FIRST
- ID:
- ivo://nasa.heasarc/skyview/first
- Title:
- FIRST
- Short Name:
- FIRST
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- The VLA FIRST (Faint Images of the Radio Sky at Twenty-centimeters) is a project designed to produce the radio equivalent of the Palomar Observatory Sky Survey over 10,000 square degrees of the North Galactic Cap. The <a href="https://sundog.stsci.edu/top.html"> FIRST home page </a> has details of the instrumentation, status of the project, and data available. Currently about 5000 images of approximately .775x.58 degrees are available. <P> These FIRST data have been retrieved from the <a href="ftp://archive.stsci.edu/pub/vla_first/data/"> FIRST FTP archive </a> at the <a href="https://www.stsci.edu/resources"> Space Telescope Science Institute</a>. <p> The FIRST survey is included on the <b>SkyView High Resolution Radio Coverage </b><a href="/images/high_res_radio.jpg"> map</a>. This map shows coverage on an Aitoff projection of the sky in equatorial coordinates. Provenance: The FIRST project team: R.J. Becker, D.H. Helfand, R.L. White M.D. Gregg. S.A. Laurent-Muehleisen.. This is a service of NASA HEASARC.
- ID:
- ivo://nasa.heasarc/skyview/dss1b
- Title:
- First Digitized Sky Survey: Blue Plates
- Short Name:
- DSS1B
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This survey uses the POSS1 Blue plates. Provenance: Data taken by CalTech, Compression and distribution by Space Telescope Science Institute.. This is a service of NASA HEASARC.
- ID:
- ivo://nasa.heasarc/skyview/dss1r
- Title:
- First Digitized Sky Survey: Red Plates
- Short Name:
- DSS1R
- Date:
- 10 May 2024
- Publisher:
- NASA/GSFC HEASARC
- Description:
- This survey is the POSS1 Red plates from the original POSS survey. It covers the sky north of -30 degrees declination. Provenance: Data taken by CalTech Compression and distribution by Space Telescope Science Institute.. This is a service of NASA HEASARC.
- ID:
- ivo://vopdc.iap/fss
- Title:
- Five Supernova Survey Galaxies
- Short Name:
- FSS
- Date:
- 10 Jan 2017
- Publisher:
- Institut d'Astrophysique de Paris
- Description:
- VO-compliant publication of the properties of the 3838 galaxies that were monitored for SNe events, including newly determined morphologies and their DENIS and POSS-II/UKST I, 2MASS and DENIS J and Ks and 2MASS H magnitudes.
- ID:
- ivo://irsa.ipac/Spitzer/Images/FEPS
- Title:
- Formation and Evolution of Planetary Systems
- Short Name:
- FEPS
- Date:
- 23 Apr 2024 01:00:00
- Publisher:
- NASA/IPAC Infrared Science Archive
- Description:
- The Formation and Evolution of Planetary Systems (FEPS) Spitzer Legacy program was designed to characterize the evolution of circumstellar gas and dust around solar-type stars between ages of 3 Myr and 3 Gyr. To achieve these goals, FEPS obtained spectrophotometric observations with the Spitzer Space Telescope for a sample of 328 stars. The observing strategy was to measure the spectral energy distribution (SED) between wavelengths of 3.6 and 70 μm with IRAC and MIPS photometry, and between 8 and 35 μm with low-resolution IRS spectra. In addition, the FEPS program obtained MIPS 160 μm photometry for 80 stars to search for colder dust, and high-resolution IRS spectra for 33 sources to probe for circumstellar gas.
- ID:
- ivo://irsa.ipac/Spitzer/Images/C2D
- Title:
- From Molecular Cores to Planet-Forming Disks
- Short Name:
- C2D
- Date:
- 16 Mar 2017 01:00:00
- Publisher:
- NASA/IPAC Infrared Science Archive
- Description:
- The c2d Spitzer Legacy project obtained images and photometry with both IRAC and MIPS instruments for five large, nearby molecular clouds. Three of the clouds were also mapped in dust continuum emission at 1.1 mm, and optical spectroscopy has been obtained for some clouds.