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J/AJ/131/1648    Type Ia supernovae at high and low redshifts   (Blondin+, 2006)

Using line profiles to test the fraternity of type Ia supernovae at high and low redshifts. Blondin S., Dessart L., Leibundgut B., Branch D., Hoflich P., Tonry J.L., Matheson T., Foley R.J., Chornock R., Filippenko A.V., Sollerman J., Spyromilio J., Kirshner R.P., Wood-Vasey W.M., Clocchiatti A., Aguilera C., Barris B., Becker A.C., Challis P., Covarrubias R., Davis T.M., Garnavich P., Hicken M., Jha S., Krisciunas K., Li W., Miceli A., Miknaitis G., Pignata G., Prieto J.L., Rest A., Riess A.G., Salvo M.E., Schmidt B.P., Smith R.C., Stubbs C.W., Suntzeff N.B. <Astron. J., 131, 1648-1666 (2006)> =2006AJ....131.1648B
ADC_Keywords: Supernovae ; Spectroscopy Keywords: cosmology: observations - line: formation - line: profiles - supernovae: general Abstract: Using archival data of low-redshift (z<0.01; Center for Astrophysics and SUSPECT databases) Type Ia supernovae (SNe Ia) and recent observations of high-redshift (0.16<z<0.64) SNe Ia, we study the "uniformity" of the spectroscopic properties of nearby and distant SNe Ia. We find no difference in the measurements we describe here. In this paper we base our analysis solely on line-profile morphology, focusing on measurements of the velocity location of maximum absorption (vabs) and peak emission (vpeak). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 140 30 Local SN Ia data table3.dat 59 38 High-z SN Ia data refs.dat 93 37 References table5.dat 88 229 Absorption velocities in Local SNe Ia (103km/s) table6.dat 88 48 Absorption velocities in ESSENCE high-z SN Ia table7.dat 56 178 Emission-peak velocities in local SN Ia table8.dat 56 39 Emission-peak velocities in ESSENCE high-z SN Ia
See also: II/256 : Sternberg Supernova Catalogue, 2004 version (Tsvetkov+, 2004) J/AJ/130/2453 : 9 high-redshift ESSENCE supernovae (Krisciunas+, 2005) J/ApJ/602/571 : High-redshift supernovae IRZ fluxes (Barris+, 2004) J/AJ/131/527 : UBVRI light curves of 44 type Ia supernovae (Jha+, 2006) J/ApJ/607/665 : Type Ia supernovae at z>1 discovered by HST (Riess+, 2004) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 A6 --- SN The IAU Name of the supernova 8- 20 A13 --- Galaxy Host galaxy (1) 22- 24 A3 --- M Messier name for the host galaxy 26- 30 I5 km/s cz Heliocentric radial velocity of host galaxy (2) 32 A1 --- n_cz [a] Indicates cz from Riess et al. (1999AJ....117..707R), Table 3 34- 37 F4.2 mag E(B-V) Average host-galaxy reddening (3) 39- 42 F4.2 mag e_E(B-V) ? The 1σ error in E(B-V) 44 A1 --- n_E(B-V) Note on E(B-V) (4) 46- 52 F7.3 mag BMAG Absolute B band magnitude at maximum (6) 54- 58 F5.3 mag e_BMAG The 1σ error in BMag 60- 63 F4.2 mag Delm15 Decline in B between maximum and +15 days (7) 65- 68 F4.2 mag e_Delm15 ? The 1σ error in Delm15 70 A1 --- n_Delm15 Flag on Delm15 (4) 72- 81 F10.2 d HJD Heliocentric Julian Date of maximum (8) 83- 86 F4.2 d e_HJD The 1σ error in HJD 88-134 A47 --- Phase Rest-frame phase(s) (G2) (9) 136-140 A5 --- Refs Reference(s) (10)
Note (1): Anon, or "Anonymous", means the galaxy has no official designation. Note (2): As quoted in the NASA/IPAC Extragalactic Database (NED); we assume an error of 300km/s in the galaxy redshift. Note (3): As quoted in Table 2, column (7) of Phillips et al. (1999AJ....118.1766P). Note (4): Flag on E(B6V), defined as follows: b = From Li et al. (1999AJ....117.2709L); the host galaxy E(B-V) was determined from the total E(B-V) quoted in Li et al. (1999AJ....117.2709L) and a Galactic reddening of 0.11mag, as derived using the dust IR emission maps of Schlegel et al. (1998ApJ...500..525S). c = From Turatto et al (1998MNRAS.283....1T). d = From Saha et al. (2001ApJ...562..314S). Note: this value assumes the supernova experiences the same reddening as the Cepheids in NGC 5584; see Saha et al. 2001ApJ...562..314S for a thorough discussion of this issue. e = From Riess et al. (1999AJ....118.2675R). f = From Krisciunas et al. (2000ApJ...539..658K). g = From Garnavich et al. (2004ApJ...613.1120G); see this same paper for a long discussion on the low/null reddening in the host galaxy. h = From Stritzinger et al. (2002AJ....124.2100S). i = From Li et al. (2001PASP..113.1178L). j = From Benetti et al. (2004MNRAS.348..261B); consult this article and Krisciunas et al. (2004AJ....128.3034K) for an extensive discussion on the abnormally high E(B-V) value obtained for SN 2002bo. Note (6): Derived from an MLCS2k2 fit to the rest-frame B-band light curves (Jha 2002, Ph.D. thesis, Harvard Univ.; Jha et al. 2007, ApJ, submitted, astro-ph/0612666). Note (7): As quoted in Table 2, column (2) of Phillips et al. (1999AJ....118.1766P). Note (8): Derived from an MLCS2k2 fit to the rest-frame B-band light curves. Note (9): Adjacent phases are listed in between square brackets; a "(2)" indicates that two spectra correspond to a same rounded phase. Note (10): Reference of refereed articles presenting optical spectroscopic data in the range -15≤Phase≤+30 [days from B-band maximum], as found on the NASA ADS server (see refs.dat); may be blank.
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference number 4- 22 A19 --- Bibcode Bibcode 24- 45 A22 --- Aut Authors 47- 93 A47 --- Com Comments
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 6 A6 --- SN The IAU name 8- 12 F5.3 --- z Redshift (1) 14- 17 F4.2 mag E(B-V) The (B-V) color excess (2) 19- 22 F4.2 mag e_E(B-V) The 1σ error in E(B-V) 24- 27 F4.2 mag Delm15 Decline in B between maximum and +15 days (2) 29- 32 F4.2 mag e_Delm15 The 1σ error in Delm15 34- 41 F8.2 d MJD Modified Julian Date of maximum (-2400000) (2) 43- 46 F4.2 d e_MJD The 1σ error in MJD 48- 59 A12 --- Phase Rest-frame phase(s) (G2)
Note (1): For redshifts determined from narrow lines in the host galaxy (quoted with three decimal places), we assume an error of ∼0.001; for those determined via cross-correlations with local SN Ia spectra templates Matheson et al. (2005AJ....129.2352M), we assume an error of 0.01. Note (2): Light-curve parameters output by the fitting routine of Prieto et al. (2006ApJ...647..501P). E(B-V) values correspond to host-galaxy extinction only.
Byte-by-byte Description of file: table5.dat table6.dat
Bytes Format Units Label Explanations
1- 6 A6 --- SN SN identification 8 A1 --- f_SN [cD] Flag on SN (G1) 10- 12 I3 --- Phase Rest-frame phase (G2) 14- 18 F5.1 Mm/s CaII-B ? CaII(3945) Blue absorption velocity (1) 20- 22 F3.1 Mm/s E_CaII-B ? Upper limit error in CaII-B 24- 26 F3.1 Mm/s e_CaII-B ? Lower limit error or error in CaII-B 28 A1 --- f_CaII-B Flag on CaII-B (G3) 30- 34 F5.1 Mm/s CaII-R ? CaII(3945) Red/Single absorption velocity (1) 36- 38 F3.1 Mm/s E_CaII-R ? Upper limit error in CaII-R 40- 42 F3.1 Mm/s e_CaII-R ? Lower limit error or error in CaII-R 44 A1 --- f_CaII-R Flag on CaII-R (G3) 46- 50 F5.1 Mm/s SII5454 ? SII(5454) absorption velocity 52- 54 F3.1 Mm/s e_SII5454 ? Error in SII5454 56 A1 --- f_SII5454 Flag on SII5454 (G3) 58- 62 F5.1 Mm/s SII5640 ? SII(5640) absorption velocity 64- 66 F3.1 Mm/s E_SII5640 ? Upper limit error in SII5640 68- 70 F3.1 Mm/s e_SII5640 ? Lower limit error or error in SII5640 72 A1 --- f_SII5640 Flag on SII5640 (G3) 74- 78 F5.1 Mm/s SiII6355 ? SiII(6355) absorption velocity 80- 82 F3.1 Mm/s E_SiII6355 ? Upper limit error in SiII6355 84- 86 F3.1 Mm/s e_SiII6355 ? Lower limit error or error in SiII6355 88 A1 --- f_SiII6355 Flag on SiII6355 (G3)
Note (1): vabs measurements for CaII(3945) are separated into "blue" and "red" components (when a double absorption is present). Both "red" and single-absorption velocities are reported in the same column.
Byte-by-byte Description of file: table7.dat table8.dat
Bytes Format Units Label Explanations
1- 6 A6 --- SN SN identification 8 A1 --- f_SN [D] Flag on SN (G1) 10- 12 I3 --- Phase Rest-frame phase (G2) 14- 17 F4.1 Mm/s CaII3945 ? Ca II (3945) emission-peak velocity 19- 21 F3.1 Mm/s e_CaII3945 ? Error in CaII3945 23 A1 --- f_CaII3945 Flag on CaII3945 (G3) 25- 28 F4.1 Mm/s SII5454 ? S II (5454) emission-peak velocity 30- 32 F3.1 Mm/s e_SII5454 ? Error in SII5454 34 A1 --- f_SII5454 Flag on SII5454 (G3) 36- 39 F4.1 Mm/s SII5640 ? S II (5640) emission-peak velocity 41- 43 F3.1 Mm/s e_SII5640 ? Error in SII5640 45 A1 --- f_SII5640 Flag on SII5640 (G3) 47- 50 F4.1 Mm/s SiII6355 ? Si II (6355) emission-peak velocity 52- 54 F3.1 Mm/s e_SiII6355 ? Error in SiII6355 56 A1 --- f_SiII6355 Flag on SiII6355 (G3)
Global Notes: Note (G1): Flag on Name, defined as follows: c = For SN 1994D there is evidence for several "blue" Ca II components see Hatano et al. 1999ApJ...525..881H, their Fig. 3). In the "blue" column we report the absorption velocity corresponding to the bluest component. D = VLT spectra reduced with the 2D restoration method of Blondin et al. (2005A&A...431..757B). Note (G2): Rest-frame days from B-band maximum, rounded to closest whole day. Note (G3): A "d" indicates insufficient wavelength coverage.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 14-Feb-2007
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