J/MNRAS/389/1871 Type Ia supernovae candidates from SDSS (Horesh+, 2008)
The rate of Type Ia supernovae at z∼0.2 from SDSS-I overlapping fields.
Horesh A., Poznanski D., Ofek E.O., Maoz D.
<Mon. Not. R. Astron. Soc., 389, 1871-1880 (2008)>
=2008MNRAS.389.1871H 2008MNRAS.389.1871H
ADC_Keywords: Surveys ; Supernovae ; Photometry, SDSS
Keywords: surveys - supernovae: general - cosmology: observations
Abstract:
In the course of the Sloan Digital Sky Survey (SDSS-I), a large
fraction of the surveyed area was observed more than once due to field
tiling overlap, usually at different epochs. We utilize some of these
data to perform a supernova (SN) survey at a mean redshift of z=0.2.
Our archival search, in ∼5 per cent of the SDSS-I overlap area,
produces 29 SN candidates clearly associated with host galaxies. Using
the Bayesian photometric classification algorithm of Poznanski et al.
(2002PASP..114..833P 2002PASP..114..833P), and correcting for classification bias, we find
17 of the 29 candidates are likely Type Ia SNe.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 93 47 SN candidate sample
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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- 4 A4 --- --- [SISN]
5- 6 I2 --- SISN SISN (SDSS-I SN) number
7 A1 --- n_SISN [*] * for candidates classified as Type Ia in
the final sample
9- 10 I2 h RAh Right ascension (J2000)
12- 13 I2 min RAm Right ascension (J2000)
15- 19 F5.2 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
25- 26 I2 arcmin DEm Declination (J2000)
28- 32 F5.2 arcsec DEs Declination (J2000)
34- 37 F4.1 deg beta Ecliptic latitude
39- 43 F5.2 mag umag ?=- SDSS u magnitude (1)
45- 49 F5.2 mag gmag ?=- SDSS g magnitude (1)
51- 55 F5.2 mag rmag ?=- SDSS r magnitude (1)
57- 61 F5.2 mag imag ?=- SDSS i magnitude (1)
63- 67 F5.2 mag zmag ?=- SDSS z magnitude (1)
69- 73 F5.3 mag E(B-V) Reddening
75- 78 F4.2 --- z ?=- Redshift (see n_z)
79 A1 --- n_z [s] s for spectroscopic redshift
81- 84 F4.2 --- P(Ia) Probability of Type Ia supernova
86- 93 A8 --- Sample Sample
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Note (1): before correction for Galactic extinction
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 28-May-2009