J/A+A/479/49 Supernova rates from STRESS (Botticella+, 2008)
Supernova rates from the Southern inTermediate Redshift ESO Supernova Search
(STRESS).
Botticella M.T., Riello M., Cappellaro E., Benetti S., Altavilla G.,
Pastorello A., Turatto M., Greggio L., Patat F., Valenti S., Zampieri L.,
Harutyunyan A., Pignata G., Taubenberger S.
<Astron. Astrophys., 479, 49-66 (2008)>
=2008A&A...479...49B 2008A&A...479...49B
ADC_Keywords: Supernovae ; Redshifts
Keywords: supernovae: general - stars: formation - Galaxy: evolution -
Galaxy: stellar content
Abstract:
To measure the supernova (SN) rates at intermediate redshift we
performed a search, the Southern inTermediate Redshift ESO Supernova
Search (STRESS). Unlike most of the current high redshift SN searches,
this survey was specifically designed to estimate the rate for both
type Ia and core collapse (CC) SNe.
We counted the SNe discovered in a selected galaxy sample measuring SN
rate per unit blue band luminosity. Our analysis is based on a sample
of ∼43000 galaxies and on 25 spectroscopically confirmed SNe plus 64
selected SN candidates. Our approach is aimed at obtaining a direct
comparison of the high redshift and local rates and at investigating
the dependence of the rates on specific galaxy properties, most
notably their colour.
Description:
Observations were carried out using the Wide Field Imager (WFI) at the
2.2m MPG/ESO telescope at La Silla, Chile. WFI is a mosaic camera
consisting of 2x4 CCDs, each of 2048x4096 pixels, with a pixel scale
of 0.238arcsec and a field of view of 34x33arcmin2. The individual
chips are separated by gaps of 23.8arcsec and 14.3arcsec along right
ascension and declination respectively, for a resulting filling factor
of 95.9%.
We performed observations in the B,V,R,I bands using the following
ESO/WFI broad-band filters: B/99, B/123, V/89, Rc/162, Ic/lwp.
The observing programme was distributed over a period of 6 years, from
1999 to 2005.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 44 16 List of the fields with multi-band coverage
table3.dat 73 31 Spectroscopically confirmed SNe
table45.dat 50 63 SN candidates with host galaxy spectra (A) or
without direct or host galaxy spectroscopy (B)
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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- 8 A8 --- Field Field designation
11- 12 I2 h RAh Right ascension (J2000)
14- 15 I2 min RAm Right ascension (J2000)
17- 20 F4.1 s RAs Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd Declination (J2000)
26- 27 I2 arcmin DEm Declination (J2000)
29- 30 I2 arcsec DEs Declination (J2000)
32- 36 F5.3 mag E(B-V) Galactic extinction from Schlegel et al.
(1998ApJ...500..525S 1998ApJ...500..525S)
38- 44 A7 --- Band [BVRI, ] Photometric bands
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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- 6 A6 --- SN SN designation
7 A1 --- n_SN [*] *: Not included in the rate computation
because the host galaxy has R>21.8
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- 31 F4.1 arcsec DEs Declination (J2000)
33- 36 A4 --- Type Type of supernova
38- 42 F5.3 --- z Redshift
44- 51 A8 --- Field Field designation
53 A1 --- Band [VR] Photometric band
55- 73 A19 --- Ref BibCode of the reference
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Byte-by-byte Description of file: table45.dat
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Bytes Format Units Label Explanations
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1 A1 --- n_STRESS [AB] SN candidate with host galaxy spectra (A)
or without direct or host galaxy spectroscopy (B)
3- 10 A8 --- STRESS SN candidate designation
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- 36 F4.1 arcsec DEs Declination (J2000)
38- 42 F5.3 --- z Redshift
44 A1 --- Band [VR] Photometric band
46- 50 A5 --- Class Classification (1)
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Note (1): Classification as follows:
sn = supernova
snagn = variable source closer than 0.5" to the host galaxy nucleus
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 25-Apr-2008