J/ApJ/607/665 Type Ia supernovae at z>1 discovered by HST (Riess+, 2004)
Type Ia supernova discoveries at z>1 from the Hubble Space Telescope:
evidence for past deceleration and constraints on dark energy evolution.
Riess A.G., Strolger L.-G., Tonry J., Casertano S., Ferguson H.C.,
Mobasher B., Challis P., Filippenko A.V., Jha S., Li W., Chornock R.,
Kirshner R.P., Leibundgut B., Dickinson M., Livio M., Giavalisco M.,
Steidel C.C., Benitez T., Tsvetanov Z.
<Astrophys. J., 607, 665-687 (2004)>
=2004ApJ...607..665R 2004ApJ...607..665R
ADC_Keywords: Supernovae ; Redshifts ; Velocity dispersion
Keywords: cosmology: observations - distance scale -
galaxies: distances and redshifts - supernovae: general
Abstract:
We have discovered 16 Type Ia supernovae (SNe Ia) with the Hubble
Space Telescope (HST) and have used them to provide the first
conclusive evidence for cosmic deceleration that preceded the current
epoch of cosmic acceleration. These objects, discovered during the
course of the GOODS ACS Treasury program, include 6 of the 7 highest
redshift SNe Ia known, all at z>1.25, and populate the Hubble diagram
in unexplored territory. The luminosity distances to these objects and
to 170 previously reported SNe Ia have been determined using empirical
relations between light-curve shape and luminosity. A purely kinematic
interpretation of the SN Ia sample provides evidence at the greater
than 99% confidence level for a transition from deceleration to
acceleration or, similarly, strong evidence for a cosmic jerk.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 55 17 Discovery data
table2.dat 66 182 SN Ia imaging
table5.dat 41 185 MLCS2k2 (multicolor light-curve shape method)
full sample
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Supernova identification
12- 20 A9 --- OName Nickname of the supernova
22- 24 A3 --- Mon Month of the UT date of discovery
26- 30 F5.2 d Date Day of the UT date of discovery
33- 34 I2 h RAh Right ascension (J2000.0)
36- 37 I2 min RAm Right ascension (J2000.0)
39- 43 F5.2 s RAs Right ascension (J2000.0)
45 A1 --- DE- Declination sign (J2000.0)
46- 47 I2 deg DEd Declination (J2000.0)
49- 50 I2 arcmin DEm Declination (J2000.0)
52- 55 F4.1 arcsec DEs Declination (J2000.0)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Supernova identification
11- 20 F10.2 d HJD Observation Julian Date
22- 27 A6 --- Filt Filter name
29- 33 F5.2 mag Vega Measured Vega-normalized magnitude in Filt
35- 38 F4.2 mag e_Vega Uncertainty in Vega
40- 44 F5.1 --- Epoch Rest frame epoch
46- 54 A9 --- Trans Passbands for transformation
56- 61 F6.3 mag Kcorr K correction
63- 66 F4.2 mag e_Kcorr Uncertainty in Kcorr
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Supernova identification
11- 16 F6.4 --- z Redshift
18- 22 F5.2 mag mu Extinction-corrected distance modulus (1)
24- 27 F4.2 km/s sigma Velocity dispersion (2)
29- 33 F5.2 mag AV ? Host galaxy V band extinction
35- 40 A6 --- Qual Sample quality code (gold or silver)
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Note (1): Distance normalization is arbitrary; see Appendix.
Note (2): Peculiar velocity of 400km/s included.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 06-Jul-2004