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J/ApJ/686/749    Improved cosmological constraints from SNe    (Kowalski+, 2008)
Improved cosmological constraints from new, old, and combined supernova data
sets.
    Kowalski M., Rubin D., Aldering G., Agostinho R.J., Amadon A.,
    Amanullah R., Balland C., Barbary K., Blanc G., Challis P.J., Conley A.,
    Connolly N.V., Covarrubias R., Dawson K.S., Deustua S.E., Ellis R.,
    Fabbro S., Fadeyev V., Fan X., Farris B., Folatelli G., Frye B.L.,
    Garavini G., Gates E.L., Germany L., Goldhaber G., Goldman B., Goobar A.,
    Groom D.E., Haissinski J., Hardin D., Hook I., Kent S., Kim A.G.,
    Knop R.A., Lidman C., Linder E.V., Mendez J., Meyers J., Miller G.J.,
    Moniez M., Mourao A.M., Newberg H., Nobili S., Nugent P.E., Pain R.,
    Perdereau O., Perlmutter S., Phillips M.M., Prasad V., Quimby R.,
    Regnault N., Rich J., Rubenstein E.P., Ruiz-Lapuente P., Santos F.D.,
    Schaefer B.E., Schommer R.A., Smith R.C., Soderberg A.M., Spadafora A.L.,
    Strolger L.-G., Strovink M., Suntzeff N.B., Suzuki N., Thomas R.C.,
    Walton N.A., Wang L., Wood-Vasey W.M., Yun J.L.,
    (the Supernova Cosmology Project)
   <Astrophys. J., 686, 749-778 (2008)>
   =2008ApJ...686..749K
ADC_Keywords: Supernovae ; Redshifts ; Photometry, UBVRI

Keywords: cosmological parameters - cosmology: observations -
          supernovae: general

Abstract:
    We present a new compilation of Type Ia supernovae (SNe Ia), a new
    data set of low-redshift nearby-Hubble-flow SNe, and new analysis
    procedures to work with these heterogeneous compilations. This "Union"
    compilation of 414 SNe Ia, which reduces to 307 SNe after selection
    cuts, includes the recent large samples of SNe Ia from the Supernova
    Legacy Survey and ESSENCE Survey, the older data sets, as well as the
    recently extended data set of distant supernovae observed with the
    Hubble Space Telescope (HST). A single, consistent, and blind analysis
    procedure is used for all the various SN Ia subsamples, and a new
    procedure is implemented that consistently weights the heterogeneous
    data sets and rejects outliers. We present the latest results from
    this Union compilation and discuss the cosmological constraints from
    this new compilation and its combination with other cosmological
    measurements (CMB and BAO).

Description:
    The SN light curve data presented in this paper were obtained as part
    of the SCP Nearby 1999 Supernova Campaign (Aldering
    2000AIPC..522...75A) and was performed in collaboration with a number
    of wide-field CCD imaging teams: EROS-II, NGSS, QUEST-I, NEAT, and
    Spacewatch. Photometric follow-up observations were obtained with the
    LICK 1m, YALO 1m, CTIO 0.9m, CTIO 1.5m, MARLY, Danish 1.5m, ESO 3.6m,
    KPNO 2.1m, JKT 1m, CFHT 3.6m, KECK-I 10m, WIYN 3.5m, and MLO 1m
    telescopes. These consist of UBVRI photometry with a nominal cadence
    of 3-7 days. The follow-up observations were performed between
    February and 1999 June, and additional reference images to determine
    the contribution of host galaxy light contamination were obtained in
    spring 2000.

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        80        8   Summary of supernova coordinates and redshifts
table9.dat        88      114   Coordinates and magnitudes of tertiary
                             calibration stars
table10.dat       87      140   B,V,R,I observations of the 8 SNe of table1
table11.dat       65      414   Supernovae of the Union compilation
table12.dat       71      638   The photometric lightcurve data from the 42 SNe
                             of Perlmutter et al. (1999ApJ...517..565P)
42sne.dat         30       42   Simbad positions for the 42 SNe of Perlmutter
                             et al. (1999ApJ...517..565P)


See also:
   J/ApJ/666/674 : ESSENCE supernova survey (Miknaitis+, 2007)
   J/ApJ/602/571 : High-redshift supernovae IRZ fluxes (Barris+, 2004)
   J/ApJ/594/1   : High-z supernovae VRI mag and distances (Tonry+, 2003)
   http://supernova.lbl.gov/Union : Supernova Cosmology Project home page


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     SN        Supernova name (SN YYYYaa)
  11- 12  I2    h       RAh       Hour of right ascension (J2000)
  14- 15  I2    min     RAm       Minute of right ascension (J2000)
  17- 21  F5.2  s       RAs       Second of right ascension (J2000)
      23  A1    ---     DE-       Declination sign (J2000)
  24- 25  I2    deg     DEd       Degree of declination (J2000)
  27- 28  I2    arcmin  DEm       Arcminute of declination (J2000)
  30- 33  F4.1  arcsec  DEs       Arcsecond of declination (J2000)
  35- 40  F6.4  ---     z         Heliocentric redshift (1)
  42- 80  A39   ---     r_SN      IAUC bibcode(s)

Note (1): The heliocentric redshift was determined using narrow host-galaxy
          features for all but one SN. In the case of SN 1999aw: due to the
          faintness of its host, the redshift was determined from the SN
          spectra.


Byte-by-byte Description of file: table9.dat

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     SN        Supernova name
  11- 12  I2    ---     Seq       Tertiary star number (1)
  14- 15  I2    h       RAh       Hour of Right Ascension (J2000)
  17- 18  I2    min     RAm       Minute of Right Ascension (J2000)
  20- 24  F5.2  s       RAs       Second of Right Ascension (J2000)
      26  A1    ---     DE-       Sign of the Declination (J2000)
  27- 28  I2    deg     DEd       Degree of Declination (J2000)
  30- 31  I2    arcmin  DEm       Arcminute of Declination (J2000)
  33- 36  F4.1  arcsec  DEs       Arcsecond of Declination (J2000)
  38- 43  F6.3  mag     Vmag      The V band magnitude
  45- 49  F5.3  mag     e_Vmag    Uncertainty in V
  51- 56  F6.4  mag     B-V       The (B-V) color index
  58- 62  F5.3  mag     e_B-V     Uncertainty in B-V
  64- 69  F6.4  mag     V-R       The (V-R) color index
  71- 75  F5.3  mag     e_V-R     Uncertainty in V-R
  77- 82  F6.4  mag     V-I       The (V-I) color index
  84- 88  F5.3  mag     e_V-I     Uncertainty in V-I

Note (1): Stars designation is <[KRA2008] SN YYYYaa NN> in Simbad.



Byte-by-byte Description of file: table10.dat

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     SN        Supernova name
  11- 20  F10.2 d       JD        Julian Date of observation
  22- 35  A14   ---     Tel       Telescope identification
  37- 42  F6.3  mag     Bmag      ? The B band magnitude
  44- 48  F5.3  mag     e_Bmag    ? Uncertainty in Bmag
  50- 55  F6.3  mag     Vmag      ? The V band magnitude
  57- 61  F5.3  mag     e_Vmag    ? Uncertainty in Vmag
  63- 68  F6.3  mag     Rmag      ? The R band magnitude
  70- 74  F5.3  mag     e_Rmag    ? Uncertainty in Rmag
  76- 81  F6.3  mag     Imag      ? The I band magnitude
  83- 87  F5.3  mag     e_Imag    ? Uncertainty in Imag


Byte-by-byte Description of file: table11.dat

   Bytes Format Units   Label     Explanations

   1-  6  A6    ---     SN        Supernova name (1)
   8- 13  F6.4  ---     z         Redshift
  15- 19  F5.2  mag     Bmag      ? The B band magnitude at maximum
  21- 24  F4.2  mag     e_Bmag    ? Uncertainty in Bmag
  26- 29  F4.2  ---     s         ? Time-scale stretch (2)
  31- 34  F4.2  ---     e_s       ? Uncertainty in s
  36- 40  F5.2  ---     c         ? Rest-frame color at maximum (2)
  42- 45  F4.2  ---     e_c       ? Uncertainty in c
  47- 51  F5.2  ---     mu        ? The µ correction (3)
  53- 56  F4.2  ---     e_mu      ? Uncertainty in mu
  58- 59  I2    ---     r_SN      Reference for SN (4)
  61- 65  A5    ---     Note      Cut description (5)

Note (1): Designations are <SN YYYYaa>, <SNLS YYDNaa>, <ESSENCE aNNN> or
          <[RSC2007] HSTYYAaa> in Simbad.
Note (2): Rest-frame color at maximum defined as c=(B-V)[t=Bmax]+0.057 and
          timescale stretch s from the spectral template based fit method of
          Guy et al. (2005A&A...443..781G).
Note (3): Color corrections from Tripp (1998A&A...331..815T) where
          µ=mmax-M+α(s-1)-βc
          See section 4.2 for further details.
Note (4): References as follows:
    1 = Hamuy et al. (1996AJ....112.2408H);
    2 = Krisciunas et al. (2004AJ....127.1664K,2004AJ....128.3034K);
    3 = Riess et al. (1999AJ....117..707R);
    4 = Jha et al. (2006AJ....131..527J);
    5 = this work;
    6 = Riess et al. (1998AJ....116.1009R) + HZT (High-Z Team (Garnavich et al.
        1998ApJ...509...74G; Schmidt et al. 1998ApJ...507...46S);
    7 = Perlmutter et al. (1999ApJ...517..565P)
    8 = Tonry et al. (2003, Cat. J/ApJ/594/1);
    9 = Barris et al. (2003, Cat. J/ApJ/602/571);
   10 = Knop et al. (2003ApJ...598..102K);
   11 = Riess et al. (2007ApJ...659...98R ; <[RSC2007] HSTYYAaa> in Simbad);
   12 = Astier et al. (2006A&A...447...31A);
   13 = Miknaitis et al. (2007, Cat. J/ApJ/666/674 ; <ESSENCE aNNN> in Simbad).
Note (5): Cut description as follows:
    o = 3σ outlier;
    p = insufficient early data
    c = no color;
    d = too few data points
    f = fit not converged.


Byte-by-byte Description of file: table12.dat

   Bytes Format Units   Label     Explanations

   1-  9  A9    ---     SN        Supernova name (SN YYYYaa)
  11- 15  F5.3  ---     z         Redshift
  17- 24  F8.2  d       MJD-R     Modified Julian Date of R band observation
  26- 34  E9.2  ---     RFlux     Bessell R band flux (1)
  36- 43  E8.2  ---     e_RFlux   The 1σ error in RFlux
  45- 52  F8.2  d       MJD-I     ? Modified Julian Date of I band observation
  54- 62  E9.2  ---     IFlux     ? Bessell I band flux (1)
  64- 71  E8.2  ---     e_IFlux   ? The 1σ error in IFlux

Note (1): Data is presented as flux, with a common zero-point of zp=30
     magnitudes. Multiple data points for a given night were combined into
     a single data point. Since reference images where used to subtract the
     host galaxy light, the data points are correlated. We recommend using
     the data from the web-link "http://supernova.lbl.gov/Union", which
     includes the covariance matrix. More information about the SNe can be
     found in Perlmutter et al. (1999ApJ...517..565P).


Byte-by-byte Description of file: 42sne.dat

   Bytes Format Units   Label     Explanations

   1-  2  I2    h       RAh       Simbad hour of right ascension (J2000)
   4-  5  I2    min     RAm       Simbad minute of right ascension (J2000)
   7- 10  F4.1  s       RAs       Simbad second of right ascension (J2000)
      12  A1    ---     DE-       Simbad declination sign (J2000)
  13- 14  I2    deg     DEd       Simbad degree of declination (J2000)
  16- 17  I2    arcmin  DEm       Simbad arcminute of declination (J2000)
  19- 20  I2    arcsec  DEs       Simbad arcsecond of declination (J2000)
  22- 30  A9    ---     SN        Supernova name (SN YYYYaa)


History:
    From electronic version of the journal
(End)                 Greg Schwarz [AAS], Emmanuelle Perret [CDS]    04-Jan-2011