Data File Documentation

General Comments

These are the assumptions of the data file formats:

  • tab separated values
  • NOT dust corrected
  • Contains these column names
    • SNID, u, g, r, i, z, err_u, err_g, err_r, err_i, err_z, redshift, ra, dec
    • ra and dec are assumed to be floats in degrees
    • order is not important

Detailed Data Set Comments

Detailed comments and documentation on each data set file in the data/ folder.

RA & Dec are in degrees. PetroRad_r is in arcsec. Photometry is in magnitudes.

Main Data

  • campbell_local.tsv
    • An original data set that combines information from SDSS_Photometric_SNe_Ia.fits

    (Campbell) and SMP-photometry\ (Holtzman). * Hubble residuals (‘hr’) use the Malmquist bias corrected distances. * It was created via Collecting Local SN Data.ipynb with the data cuts in the paper: z < 0.5, simga_mag < 1.5 mag, HR < 0.7 mag. * N = 104

  • campbell_global.tsv
    • The global photometry of the same hosts as campbell_local.tsv
    • Retrieval SEDs in the same way as gupta_global.tsv.
    • N = 104
  • campbell_formass.csv
    • TODO
    • a csv version of campbell_global.tsv
    • with PetroRad_r column removed

Calibration Data

  • ellipt_burst_global.tsv
    • TODO
    • note really SNID’s but rather galaxy number. More details are in the notes header
  • ellipt_burst_local.tsv
    • Not needed therefore not there.
  • gupta_global.tsv
    • The objects analyzed in Gupta 2011 but with the same quality cuts I performed on the Campbell/Holtzmann data set.
    • This is the global photometry for the host galaxies of many SDSS-II SN. From DR12 via astroquery 0.3.4, by hand on SkyServer DR13, and Gupta 2011 redshift if none was found before
    • N = 77
  • Gupta11_table2.???
    • TODO
self_consistancey.tsv
  • no need for RA and Dec in this file. Code skips dust correction for this data set.

H_0 analysis

riess_local.tsv riess_global.tsv riess_formass.csv

Others

  • Table 7
  • Table 8
  • Table 9

Folders

  • calibration_sample_lc/
    • Raw light curves
    • & light curves in the form needed by sncosmo and will be analyses by get_salt_values.py
  • oldruns/
    • original version of data folder. Used for much of the development. Was removed on 2018-07-27 for this current system.
  • SDSS - coadded, SDSS - spectra
    • Not used and are self evident
  • SMP-photometry
    • “raw” data for from Holtzman scene modeling.

  • CampbellHoltzman_formass.csv
    • This file was used as part of the inputs to kcorrect.
    • is a subset of CampellHoltzman_global.tsv
    • It was created via an older copy of Collecting Local SN Data.ipynb.
  • CampellHoltzman_global.tsv
    • The global photometry of the same hosts as CampellHoltzman.tsv
    • Retrieval method is the same as GobalPhotomtery-Gupta.tsv.
  • circlePhotometry.tsv
  • final_mags.txt
    • Output from Peter’s magnitude calculations.
  • galaxyPhotometry.tsv
    • Am I even using this?
  • GlobalPhotometry-Gupta.tsv
    • This is the global photometry for the host galaxies of many SDSS-II SN

From DR12 via astroquery 0.3.4, by hand on SkyServer DR13, and Gupta 2011 redshift if none was found before * Gupta11_table2.txt

  • The ascii version of table 2 from Gupta 2011. Paper has complete citation.
  • tsv file is the same, I mean to only use the txt file but I appear to be using the tsv once in this whole setup.
  • Riess2016_calibrators.tsv
    • These are the galaxies used to calibrate the SN $M_0$ value.
    • They are first reported in Table 1 and used for the middle frame in figure 10.
    • 101 is M101, 9391 is UGC 9391, and all the rest are NGC objects.
    • The redshifts are from Simbad
    • The photometry was done by Peter emailed to me on 2018-06-27 with the subject “final mags for cepheid hosts”
    • “The uncertainties should be dominated by systematics and not statistical noise given the brightness of these objects. I would say that the relative uncertainty from band to band is 0.03 mag. The over-all uncertainty is larger as a slightly bigger aperture might include more light. But use 0.03 mag and we can inflate the errors on the mass.” – Peter
    • Some objects are outside of SDSS footprint, but sadly PanSTARS did not observe in the u band:

‘’’ 1365 0.005476 0.00001 1448 0.003895 2442 0.004846 4038 0.005593 5917 0.006472 ‘’’ * Riess2016_calibrators_local.tsv

  • Same as Riess2016_calibrators.tsv but for 1.5kpc radii apertures around the location of their SN.
  • Riess2016_formass.csv
    • same as Riess2016_calibrators.tsv but saved as a csv rather than tsv.
    • except that these “redshifts” are derived from the median NED cephiad distance and assuming a H_0 = 73.8 km/s/Mpc as fit by Campbell 2013 and used throughout this paper.
  • SDSS_Photometric_SNe_Ia.fits
    • This is the data released in Campbell 2013. It is the cosmological data

    for the spectroscopic and photometrically classified SN Ia from SDSS. * It is originally available at http://www.icg.port.ac.uk/stable/campbelh/SDSS_Photometric_SNe_Ia.fits

  • lc/
    • Raw light curves
    • & light curves in the form needed by sncosmo and will be analyses by get_salt_values.py
  • ellipt_burst_global.tsv
    • IC 219 host of SN 2005dm (elliptical
    • NGC 524 host of SN 2000cx (elliptical)
    • Arp 299 (starburst) host of many CC SN (local is 2010P)
    • M82 (NGC 3034) (starburst) host of SN 2014J