J/ApJ/721/1608 Absolute UV magnitudes of type Ia SNe (Brown+, 2010)
The absolute magnitudes of type Ia supernovae in the ultraviolet.
Brown P.J., Roming P.W.A., Milne P., Bufano F., Ciardullo R.,
Elias-Rosa N., Filippenko A.V., Foley R.J., Gehrels N., Gronwall C.,
Hicken M., Holland S.T., Hoversten E.A., Immler S., Kirshner R.P., Li W.,
Mazzali P., Phillips M.M., Pritchard T., Still M., Turatto M.,
Vanden Berk D.
<Astrophys. J., 721, 1608-1626 (2010)>
=2010ApJ...721.1608B 2010ApJ...721.1608B
ADC_Keywords: Supernovae ; Photometry, ultraviolet ; Magnitudes, absolute ;
Extinction
Keywords: distance scale - dust, extinction - supernovae: general -
galaxies: distances and redshifts - ultraviolet: general
Abstract:
We examine the absolute magnitudes and light-curve shapes of 14 nearby
(redshift z=0.004-0.027) Type Ia supernovae (SNe Ia) observed in the
ultraviolet (UV) with the Swift Ultraviolet/Optical Telescope. Colors
and absolute magnitudes are calculated using both a standard Milky Way
extinction law and one for the Large Magellanic Cloud that has been
modified by circumstellar scattering. We find very different behavior
in the near-UV filters (uvw1rc covering ∼2600-3300Å after
removing optical light, and u∼3000-4000Å) compared to a mid-UV
filter (uvm2∼2000-2400Å).
Description:
This study includes the 14 Swift/UVOT SNe Ia from Brown et al. (2009,
Cat. J/AJ/137/4517) and Milne et al. (2010ApJ...721.1627M 2010ApJ...721.1627M) with low
extinction (E(B-V)<0.5mag) and well-sampled light curves in at least
one UV filter.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 89 14 Apparent magnitudes at maximum light
table7.dat 93 14 Host galaxies and distances
table3.dat 41 14 Red-tail corrections of SNe Ia near maximum light
table12.dat 54 97 Colors and red-tail corrections for other sources
table13.dat 41 97 Count rate to flux conversion factors for other
sources
table14.dat 55 97 Milky Way extinction law coefficients for other
sources
table15.dat 55 97 Circumstellar LMC extinction law coefficients for
other sources
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
II/189 : Magnitude Observations of Type I Supernovae (Cadonau+ 1990)
J/AJ/137/4517 : UVOT light curves of supernovae (Brown+, 2009)
J/ApJ/707/1449 : Local hosts of SNe Ia (Neill+, 2009)
J/ApJ/700/1097 : Light curve parameters of SN Ia (Hicken+, 2009)
J/ApJ/700/331 : Light curves of type Ia supernovae (CfA3) (Hicken+, 2009)
J/ApJ/699/L139 : Spectral parameters of SNe Ia (Wang+, 2009)
J/MNRAS/389/1577 : UBVRI absolute magnitudes of Type Ia SNe (Takanashi+, 2008)
J/MNRAS/376/1301 : UBVRI light-curves of SN 2005cf (Pastorello+, 2007)
J/ApJ/659/122 : Improved distances to type Ia supernovae (Jha+, 2007)
J/A+A/437/789 : Restframe I-band light curves of SN Ia (Nobili+, 2005)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [SN]
4- 9 A6 --- SN SN name (YYYYaa)
11- 14 F4.2 mag Dm15 Optical decay rate Δm15(B) (1)
16- 19 F4.2 mag e_Dm15 Dm15 uncertainty
21- 25 F5.2 mag uvw2 ? Swift/UVOT uvw2-band magnitude
27- 30 F4.2 mag e_uvw2 ? 1σ error on uvw2
32- 36 F5.2 mag uvm2 ? Swift/UVOT uvm2-band magnitude
38- 41 F4.2 mag e_uvm2 ? uvm2 uncertainty
43- 47 F5.2 mag uvw1 Swift/UVOT uvw1-band magnitude
49- 52 F4.2 mag e_uvw1 uvw1 uncertainty
54- 58 F5.2 mag umag ? Swift/UVOT u-band magnitude
60- 63 F4.2 mag e_umag ? umag uncertainty
65- 69 F5.2 mag bmag Swift/UVOT b-band magnitude
71- 74 F4.2 mag e_bmag bmag uncertainty
76- 80 F5.2 mag vmag Swift/UVOT v-band magnitude
82- 85 F4.2 mag e_vmag vmag uncertainty
87- 89 A3 --- Ref References (2)
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Note (1): The number of magnitudes the B band declines in the first 15 days
after maximum light, Δm15(B).
Note (2): References are given for the Delm15 and bv peak magnitudes while the
UV maxima are all UVOT measurements from Milne et al.
(2010ApJ...721.1627M 2010ApJ...721.1627M). Code as follows:
U = UVOT, Milne et al. 2010ApJ...721.1627M 2010ApJ...721.1627M
1 = Li et al. 2006PASP..118...37L 2006PASP..118...37L;
2 = KAIT, Milne et al. 2010ApJ...721.1627M 2010ApJ...721.1627M;
3 = Pastorello et al. 2007, Cat. J/MNRAS/376/1301;
4 = ANU, Milne et al. 2010ApJ...721.1627M 2010ApJ...721.1627M;
5 = CSP, M. Stritzinger et al. 2011AJ....142..156S 2011AJ....142..156S
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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- 2 A2 --- --- [SN]
4- 9 A6 --- SN SN name (YYYYaa)
11- 14 F4.2 --- w2fr w2rc fraction (3)
16- 20 F5.2 mag rcw2 Swift/UVOT uvw2 filter red tail correction
22- 25 F4.2 mag e_rcw2 rcw2 uncertainty
27- 30 F4.2 --- w1fr w1rc fraction (3)
32- 36 F5.2 mag rcw1 Swift/UVOT uvw1 filter red tail correction
38- 41 F4.2 mag e_rcw1 rcw1 uncertainty
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Note (3): The fraction of the estimated counts in each "red-corrected filter"
to that of the original filter: uvw2rc=uvw2-rcw2. See section 2.2
for further details.
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [SN]
4- 9 A6 --- SN SN name (YYYYaa)
11- 23 A13 --- Host Host galaxy name
25- 30 A6 --- TType Morphological type
32- 38 F7.5 --- v/c Redshift
40- 44 F5.2 mag muz Hubble-flow distance (4)
46- 49 F4.2 mag e_muz muz uncertainty
51- 55 F5.2 mag muI ? Independent (from redshift and the SN
properties) distance
57- 60 F4.2 mag e_muI ? muI uncertainty
62- 66 F5.2 mag mu31 ? Distance modulus calculated based on MLCS2k2
fitting with RV=3.1 (5)
68- 71 F4.2 mag e_mu31 ? mu31 uncertainty
73- 77 F5.2 mag mu17 ? Distance modulus calculated based on MLCS2k2
fitting with RV=1.7 (5)
79- 82 F4.2 mag e_mu17 ? mu17 uncertainty
84- 93 A10 --- Refgal Reference(s) (6)
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Note (4): Hubble-flow distance includes a local velocity flow correction and
calculates a distance assuming H0=72km/s/Mpc. A dispersion of
150km/s is included in the 1σ uncertainties.
Note (5): From the updated version of the multi-color light-curve shape method
(MLCS2k2; Riess et al. 1996ApJ...473...88R 1996ApJ...473...88R; Jha et al. 2007,
Cat. J/ApJ/659/122; Hicken et al. 2009, Cat. J/ApJ/700/331). For
MLCS2k2 we use the values of Hicken et al. (2009, Cat. J/ApJ/700/331)
derived using the MW value of RV=3.1 as well as the RV=1.7 value
which they find gives the best results.
See section 2.4 for further details.
Note (6): The first reference is for the host type, the second is for the
redshift measurement (obtained from NED), and the third is for the
independent distance if given. Code as follows:
1 = Sandage & Tammann, 1981, Cat. VII/51;
2 = Theureau et al. 1998, Cat. J/A+AS/130/333;
3 = da Costa et al. 1998, Cat. J/AJ/116/1;
4 = Koribalski et al. 2004, Cat. J/AJ/128/16;
5 = TF, Tully et al. 1992, Cat. J/ApJS/80/479;
6 = SBF, Tonry et al. 2001ApJ...546..681T 2001ApJ...546..681T (decreased by 0.16mag as per
Jensen et al. 2003ApJ...583..712J 2003ApJ...583..712J);
7 = de Vaucouleurs et al. 1991, Cat. VII/155 (RC3);
8 = Abazajian et al. 2003AJ....126.2081A 2003AJ....126.2081A (SDSS-DR1; superseded by
Cat. II/306);
9 = Jarrett et al. 2000AJ....119.2498J 2000AJ....119.2498J (see Cat. VII/233);
10 = Marzke et al. 1996, Cat. J/AJ/112/1803;
11 = Wood-Vasey et al. 2008, Cat. J/ApJ/689/377;
12 = Bosma & Freeman 1993AJ....106.1394B 1993AJ....106.1394B;
13 = Mieske et al. 2005A&A...438..103M 2005A&A...438..103M;
14 = Graham et al. 1998, Cat. J/A+AS/133/325;
15 = Jensen et al. 2003ApJ...583..712J 2003ApJ...583..712J;
16 = Simien & Prugniel 2000, Cat. J/A+AS/145/263;
17 = Keel 1996, Cat. J/ApJS/106/27.
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Byte-by-byte Description of file: table12.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- SType Spectrum type used to calculate colors (G1)
12- 16 F5.2 mag w2-m2 Swift/UVOT (uvw2-uvm2) color index
18- 22 F5.2 mag m2-w1 Swift/UVOT (uvm2-uvw1) color index
24- 28 F5.2 mag w1-u Swift/UVOT (uvw1-u) color index
30- 34 F5.2 mag u-b Swift/UVOT (u-b) color index
36- 40 F5.2 mag b-v Swift/UVOT (b-v) color index
42- 46 F5.2 mag rcw2 ? Swift/UVOT uvw2 filter red tail correction (1)
47 A1 --- f_rcw2 [)] rcw2 < 20% (2)
49- 53 F5.2 mag rcw1 Swift/UVOT uvw1 filter red tail correction (1)
54 A1 --- f_rcw1 [)] rcw1 < 20% (2)
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Note (1): Red tail corrections are defined as the magnitude difference between
observed magnitudes and synthetic magnitudes in a corresponding
filter with no red tail such that rcw2=uvw2-uvw2rc.
Note (2):
) = The UV portion is less than 20% (rcw2←1.65 or rcw1←1.60)
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Byte-by-byte Description of file: table13.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- SType Spectrum type used to calculate colors (G1)
12- 15 F4.2 10+14J/m2/nm/ct Fw2 Swift/UVOT uvw2 filter flux conversion
factor (1)
17- 21 F5.2 10+14J/m2/nm/ct Fm2 Swift/UVOT uvm2 filter flux conversion
factor (1)
23- 26 F4.2 10+14J/m2/nm/ct Fw1 Swift/UVOT uvw1 filter flux conversion
factor (1)
28- 31 F4.2 10+14J/m2/nm/ct Fu Swift/UVOT u filter flux conversion
factor (1)
33- 36 F4.2 10+14J/m2/nm/ct Fb Swift/UVOT b filter flux conversion
factor (1)
38- 41 F4.2 10+14J/m2/nm/ct Fv Swift/UVOT v filter flux conversion
factor (1)
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Note (1): In units of 1016erg/cm2/Angstroms/count. Multiplying the
observed count rate (in units of counts/s) by the conversion factors
gives the flux density (in units of erg/cm2/s/Angstroms) at the Vega
effective wavelength corresponding to the filter
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Byte-by-byte Description of file: table14.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- SType Spectrum type used to calculate colors (G1)
12- 16 F5.2 --- Rw2 Swift/UVOT uvw2 filter extinction coefficient (G2)
18- 22 F5.2 --- Rm2 Swift/UVOT uvm2 filter extinction coefficient (G2)
24- 28 F5.2 --- Rw1 Swift/UVOT uvw1 filter extinction coefficient (G2)
30- 33 F4.2 --- Ru Swift/UVOT u filter extinction coefficient (G2)
35- 38 F4.2 --- Rb Swift/UVOT b filter extinction coefficient (G2)
40- 43 F4.2 --- Rv Swift/UVOT v filter extinction coefficient (G2)
45- 49 F5.2 --- Rw1c Swift/UVOT uvw1 filter red tail correction
extinction coefficient (G2)
51- 55 F5.2 --- Rw2c Swift/UVOT uvw2 filter red tail correction
extinction coefficient (G2)
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Byte-by-byte Description of file: table15.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- SType Spectrum type used to calculate colors (G1)
12- 16 F5.2 --- Rw2.m Swift/UVOT uvw2 filter extinction coefficient (G2)
18- 22 F5.2 --- Rm2.m Swift/UVOT uvm2 filter extinction coefficient (G2)
24- 28 F5.2 --- Rw1.m Swift/UVOT uvw1 filter extinction coefficient (G2)
30- 33 F4.2 --- Ru.m Swift/UVOT u filter extinction coefficient (G2)
35- 38 F4.2 --- Rb.m Swift/UVOT b filter extinction coefficient (G2)
40- 43 F4.2 --- Rv.m Swift/UVOT v filter extinction coefficient (G2)
45- 49 F5.2 --- Rw1c.m Swift/UVOT uvw1 filter red tail correction
extinction coefficient (G2)
51- 55 F5.2 --- Rw2c.m Swift/UVOT uvw2 filter red tail correction
extinction coefficient (G2)
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Global notes:
Note (G1): SN name, blackbody with several temperature, stellar type,
or galaxy model (Hubble type or SFB = single burst of star formation
viewed at 1 or 15Gyr).
Note (G2): The circumstellar extinction coefficient R corresponds to
R(X)=A(X)/E(B-V).
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 09-Jul-2012