J/MNRAS/382/1169 Supernovae in the Subaru Deep Field (Poznanski+, 2007)
Supernovae in the Subaru Deep Field:
an initial sample and Type Ia rate out to redshift 1.6.
Poznanski D., Maoz D., Yasuda N., Foley R.J., Doi M., Filippenko A.V.,
Fukugita M., Gal-Yam A., Jannuzi B.T., Morokuma T., Oda T., Schweiker H.,
Sharon K., Silverman J.M., Totani T.
<Mon. Not. R. Astron. Soc., 382, 1169-1186 (2007)>
=2007MNRAS.382.1169P 2007MNRAS.382.1169P
ADC_Keywords: Surveys ; Supernovae ; Photometry ; Redshifts
Keywords: surveys - supernovae: general - cosmology: miscellaneous -
cosmology: observations
Abstract:
Large samples of high-redshift supernovae (SNe) are potentially
powerful probes of cosmic star formation, metal enrichment and SN
physics. We present initial results from a new deep SN survey, based
on re-imaging in the R, i', z' bands, of the 0.25deg2 Subaru Deep
Field (SDF), with the 8.2-m Subaru telescope and Suprime-Cam. In a
single new epoch consisting of two nights of observations, we have
discovered 33 candidate SNe, down to a z'-band magnitude of 26.3 (AB).
We have measured the photometric redshifts of the SN host galaxies,
obtained Keck spectroscopic redshifts for 17 of the host galaxies and
classified the SNe using the Bayesian photometric algorithm of
Poznanski et al. (2007AJ....134.1285P 2007AJ....134.1285P) that relies on template
matching.
Description:
Our SN survey is carried out in the SDF (RA=13:24:39, DE=+27:29:26;
J2000). The reference images for this field, obtained with the
Suprime-Cam camera on the Subaru 8.2-m telescope on Mauna Kea, Hawaii,
are described by Kashikawa et al. (2004PASJ...56.1011K 2004PASJ...56.1011K).
The imaging for the reference SDF epoch was carried out between 2002
April and 2003 April, with some preliminary data collected in 2001, as
described by Kashikawa et al. (2004PASJ...56.1011K 2004PASJ...56.1011K).
We re-imaged the field on 2005 March 5 and 6 (ut dates are used
throughout this paper), in the three reddest Suprime-Cam broad bands:
R, i' and z'. We also observed the field with the MOSAIC-I wide field
imager on the Kitt Peak National Observatory (KPNO) 4-m Mayall
telescope on 2005 March 2, April 5 and June 8, and on 2006 June 19.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 115 33 SNe discovered in the SDF
table2.dat 145 31 SN host galaxies
table3.dat 42 123 Keck Spectroscopy of SDF Galaxies
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See also:
B/subaru : Log of Subaru Prime Focus Camera Exposures (ADAC NAOJ, 2007)
J/PASJ/57/165 : Lyα emitters in the SUBARU Deep Field (Taniguchi+, 2005)
J/PASJ/58/313 : Lyα emitters in the SUBARU Deep Field (Shimasaku+, 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [SNSDF]
7- 13 A7 --- SNSDF SNe identification (YYMM-NN)
15- 16 I2 h RAh Right ascension (J2000)
18- 19 I2 min RAm Right ascension (J2000)
21- 25 F5.2 s RAs Right ascension (J2000)
27 A1 --- DE- Declination sign (J2000)
28- 29 I2 deg DEd Declination (J2000)
31- 32 I2 arcmin DEm Declination (J2000)
34- 38 F5.2 arcsec DEs Declination (J2000)
40 A1 --- l_Rmag Limit flag on Rmag
41- 45 F5.2 mag Rmag R magnitude (AB system)
47- 50 F4.2 mag e_Rmag ? rms uncertainty on Rmag
51 A1 --- n_Rmag [d] d: Fainter than 3σ limiting magnitude
53 A1 --- l_i'mag Limit flag on i'mag
54- 58 F5.2 mag i'mag i' magnitude (AB system)
60- 63 F4.2 mag e_i'mag ? rms uncertainty on i'mag
64 A1 --- n_i'mag [d] d: Fainter than 3σ limiting magnitude
66- 70 F5.2 mag z'mag z' magnitude (AB system)
72- 75 F4.2 mag e_z'mag rms uncertainty on z'mag
77- 78 I2 --- S/N Signal-to-noise ratio of the SN, in the
z'-band image
80- 83 F4.2 --- zphot Photometric redshift
85- 89 F5.3 --- zsp ? Spectroscopic redshift
91- 94 F4.2 --- PIa ? Probability that object is a SN Ia, based on
SNABC (Poznanski et al., 2007AJ....134.1285P 2007AJ....134.1285P)
96- 97 A2 --- Type Type (Ia or CC)
99-102 F4.2 --- z Posterior redshift
104-108 F5.2 --- chi2 chi2 value
109-114 F6.2 mag MAG Absolute magnitude in Band
115 A1 --- Band [UBV] Band of the absolute magnitude (1)
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Note (1): Approximate absolute magnitudes in rest-frame B band, unless
rest-frame B does not fall within the observed R, i', z' bands, in
which case we list rest-frame U or V absolute magnitudes, at high
or low redshift, respectively.
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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 --- --- [hSDF]
6- 12 A7 --- hSDF Host galaxy identification (YYMM-NN)
14- 15 I2 h RAh Right ascension (J2000)
17- 18 I2 min RAm Right ascension (J2000)
20- 24 F5.2 s RAs Right ascension (J2000)
26 A1 --- DE- Declination sign (J2000)
27- 28 I2 deg DEd Declination (J2000)
30- 31 I2 arcmin DEm Declination (J2000)
33- 37 F5.2 arcsec DEs Declination (J2000)
39- 42 F4.2 arcsec Offset Offset
44 A1 --- l_Bmag Limit flag on Bmag
45- 49 F5.2 mag Bmag B magnitude
51- 54 F4.2 mag e_Bmag ? rms uncertainty on Bmag
55 A1 --- n_Bmag [c] c: Fainter than 3σ limiting magnitude
57- 61 F5.2 mag Vmag V magnitude
63- 66 F4.2 mag e_Vmag rms uncertainty on Vmag
68- 72 F5.2 mag Rmag R magnitude
74- 77 F4.2 mag e_Rmag ? rms uncertainty on Rmag
79 A1 --- l_i'mag Limit flag on i'mag
80- 84 F5.2 mag i'mag i' magnitude
86- 89 F4.2 mag e_i'mag ? rms uncertainty on i'mag
90 A1 --- n_i'mag [c] c: Fainter than 3σ limiting magnitude
92 A1 --- l_z'mag Limit flag on z'mag
93- 97 F5.2 mag z'mag z' magnitude
99-102 F4.2 mag e_z'mag ? rms uncertainty on z'mag
103 A1 --- n_z'mag [c] c: Fainter than 3σ limiting magnitude
105 A1 --- l_NB816 Limit flag on NB816
106-110 F5.2 mag NB816 NB816 magnitude
112-115 F4.2 mag e_NB816 ? rms uncertainty on NB816 (1)
116 A1 --- n_NB816 [c] c: Fainter than 3σ limiting magnitude
118 A1 --- l_NB921 Limit flag on NB921 (1)
119-123 F5.2 mag NB921 NB921 magnitude
125-128 F4.2 mag e_NB921 ? rms uncertainty on NB921
129 A1 --- n_NB921 [c] c: Fainter than 3σ limiting magnitude
131-134 F4.2 --- zphot Photometric redshift
136-139 A4 --- Type Best-fitting galaxy template (2)
141-145 F5.3 --- zsp ? Spectrosocpic redshift
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Note (1): Subaru filters:
-- NB816: λc=8154Å, Δλ(FWHM)=120Å
-- NB921: λc=9196Å, Δλ(FWHM)=132Å
Note (2): SB2 is a starburst spectral template from Kinney et al.
(1996ApJ...467...38K 1996ApJ...467...38K).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [PMY2007] Sequential number of SDF Galaxies
5- 6 I2 h RAh Right ascension (J2000)
8- 9 I2 min RAm Right ascension (J2000)
11- 16 F6.3 s RAs Right ascension (J2000)
18 A1 --- DE- Declination sign (J2000)
19- 20 I2 deg DEd Declination (J2000)
22- 23 I2 arcmin DEm Declination (J2000)
25- 29 F5.2 arcsec DEs Declination (J2000)
31- 34 F4.1 mag Rmag R magnitude
36- 40 F5.3 --- z Redshift
42 I1 --- Inst Intrument and observation code (1)
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Note (1): Code as follows:
1 = LRIS, 12 Jan. 2007
2 = DEIMOS, 21 Jan. 2007
3 = DEIMOS, 16 Mar. 2007
4 = DEIMOS, 12 Apr. 2007
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Apr-2008