The SNDB


Welcome to the UC Berkeley Filippenko Group's Supernova Database. This website represents an effort to make available all of the data collected by the Filippenko Group at UC Berkeley. The bulk of these data were collected at the Lick or Keck observatories, and they represent the accumulated work of a great number of researchers and telescope staff over decades. If you cannot find data published by the group, contact us and we'll figure out where it is. For a further explanation of the SNDB please refer to BSNIP I (Silverman et al. 2012, MNRAS, 425, 1789).

Contact the webmaster: ishivvers@astro.berkeley.edu

If you use data from the SNDB in a publication, please cite the original publication of the data and include an acknowledgement of the SNDB!


How to Search the SNDB


This website allows you to perform complex searches for data within the SNDB. The Objects column searches against properties of the object itself, while the Spectra and Photometry columns search against the properties of a each data file. The checkboxes at the top of the page allow you to choose what type of data to search for. Note that the SNDB is not case-sensitive.

Pre-defined Search Options

Many fields allow you to either choose from a set of pre-defined options or to enter your own text. The given options cover most of the data in the SNDB, but not all, so if you cannot find a file using the pre-defined options try making your search more general!

Numerical Fields

All of the numerical entry fields (except for the coordinate fields) allow you to enter logical comparison operators (<,>), or a comma-separated range, or a single value. For example:

  • 0.05 : matches only 0.05 exactly
  • < 0.05 : matches all values less than 0.05
  • > 0.05 : matches all values greater than 0.05
  • 0.01, 0.05 : matches all values between 0.01 and 0.05

RegEx

If you select the RegEx box (where given) and enter a valid regular expression the SNDB will return all matches using the MySQL REGEXP operator. Several parameters have the RegEx box marked by default - in these cases, the SNDB field may contain more than one value, and using a regular expression match allows you to search for fields that contain the search string but are not exact matches to the search string.
Some helpful RegEx examples:

  • 1998S: matches 'sn1998s', 'SN1998S', 'SN 1998S', et cetera
  • 2000[AMN]: matches 'SN 2000A', 'SN 2000M', 'SN 2000N', 'SN 2000ab', et cetera
  • V: matches 'V', 'B,V,R,I', et cetera
  • (R|clear): matches 'B,V,R,I', 'clear', 'V,I,clear', et cetera

Range

If you select the Range box (where given), you must enter a range of values separated by a comma. For example, selecting Range by a Date entry box and entering "2015-01-01, 2015-01-30" would match to all dates in between.

Coordinates

Coordinates can be entered in most reasonable formats, so long as Right Ascension is first and Declination is second, and they are separated by a comma. If a search box size is not given, the SNDB will search for sources within one arcminute of the given coordinates.
Some valid formats:

  • 12:18:48.68, +14:24:43.5
  • 12 18 48.68, +14 24 43.5
  • 184.7, 14.4

Dates

Dates can be entered in most reasonable formats, so long as no commas are used except to demarcate two different date strings when performing a Range search.
Some valid formats:

  • 2010-01-21
  • 2010/01/21
  • 01/21/2010
  • January 21 2010
  • Jan 21 2010

Days From Discovery/Peak

You can search for spectra in the DB that were taken at a certain phase relative to the date of discovery and/or peak. These are numerical fields, so you can use the logical arguments described above. Note that all SNe in our DB have a known discovery date, but only a small subset have a known peak date - if you use the Days From Peak constraint, only spectra of SNe with known peak dates will be returned. Time dilation is accounted for when calculating the phase relative to peak date.


Examining Data


Downloading Data

All data sets can be downloaded individually by clicking the Now button, or in bulk by selecting the checkboxes and clicking the Download Selected button. All data are available as ASCII files.

Plots

Plots of data can be generated by clicking the Plot button. Each plot provides tools to zoom and pan (see buttons in lower left of each plot).


Download Datasets (BSNIP, LOSS)


LOSS Cosmology paper (Ganeshalingam et al. 2013, MNRAS, 433, 2240)

Here are the data from LOSS Cosmology paper:

  • Table 3: Salt2 Parameters and Distance Estimates TXT
  • LOSS Natural System Photometry TXT
  • LOSS Telescope System Transmission Curves TAR
  • Figures from paper TAR



BSNIP I (Silverman et al. 2012, MNRAS, 425, 1789)

Download a tar file of all spectra here.

Here are the full tables from BSNIP I:

  • Table 1: SN Ia and Host Information PDF TXT
  • Table 2: SN Ia Spectral Information PDF TXT
  • Table 5: SNID v7.0 Spectral Templates PDF TXT
  • Table 7: SNID Classification Information PDF TXT

Plots of all of the fully reduced spectra, as well as galaxy-subtracted spectra, presented in BSNIP I are here. Spectral sequence plots for all objects in BSNIP I with more than 7 spectra are here. Plots of all objects for which (re-)classifications were made, compared to their best-matching SNID template, are here.

The SNID v7.0 Spectral Templates are here. To add the new templates to your version of SNID, follow these instructions.



BSNIP II (Silverman et al. 2012, MNRAS, 425, 1819)

Here are the full tables from BSNIP II:

  • Table 3: Velocity Gradients and Interpolated/Extrapolated Velocities TXT
  • Table A1: Summary of Spectral Dataset TXT
  • Table B1: Measured Values for Ca II H&K TXT
  • Table B2: Measured Values for Si II λ4000 TXT
  • Table B3: Measured Values for Mg II TXT
  • Table B4: Measured Values for Fe II TXT
  • Table B5: Measured Values for S II "W" TXT
  • Table B6: Measured Values for Si II λ5972 TXT
  • Table B7: Measured Values for Si II λ6355 TXT
  • Table B8: Measured Values for O I Triplet TXT
  • Table B9: Measured Values for Ca II Near-IR Triplet TXT

 


Acknowledgements


Many thanks to the huge number of researchers, graduate students, postdocs, and Berkeley undergraduates who have helped to observe, organize, and interpret the contents of the SNDB!


Authored by Isaac Shivvers and Jeffrey M. Silverman ::: Advised by A. V. Filippenko :::