J/other/Sci/340.170 Classifications of 188 SNe Ia (Wang+, 2013)
Evidence for two distinct populations of type Ia supernovae.
Wang X., Wang L., Filippenko A.V., Zhang T., Zhao X.
<Science, 340, 170-173 (2013)>
=2013Sci...340..170W 2013Sci...340..170W
ADC_Keywords: Galaxies, nearby ; Supernovae
Abstract:
Type Ia supernovae (SNe Ia) have been used as excellent standardizable
candles for measuring cosmic expansion, but their progenitors are
still elusive. Here, we report that the spectral diversity of SNe Ia
is tied to their birthplace environments. We found that those with
high-velocity ejecta are substantially more concentrated in the inner
and brighter regions of their host galaxies than are normal-velocity
SNe Ia. Furthermore, the former tend to inhabit larger and more
luminous hosts. These results suggest that high-velocity SNe Ia likely
originate from relatively younger and more metal-rich progenitors than
do normal-velocity SNe Ia and are restricted to galaxies with
substantial chemical evolution.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables1.dat 94 188 Observed parameters and classifications of 188 SNe Ia
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See also:
J/ApJ/689/377 : SNe Ia as NIR standard candles from PAIRITEL
(Wood-Vasey+, 2008)
J/MNRAS/389/1577 : UBVRI absolute magnitudes of Type Ia SNe (Takanashi+, 2008)
J/ApJ/699/L139 : Spectral parameters of SNe Ia (Wang+, 2009)
J/ApJ/707/1449 : Local hosts of SNe Ia (Neill+, 2009)
J/ApJ/721/1608 : Absolute UV magnitudes of type Ia SNe (Brown+, 2010)
J/ApJ/722/566 : SDSS-II SN survey host galaxies of SNe Ia (Lampeitl+, 2010)
J/ApJS/190/418 : Light curves for 165 SNe Ia (Ganeshalingam+, 2010)
J/AJ/139/519 : Carnegie supernova project. SNe Ia (Contreras+, 2010)
J/ApJ/726/25 : Production of p-process nuclei in SNe Ia (Kusakabe+, 2011)
J/AJ/142/156 : The CSP (DR2): photometry of SNe Ia (Stritzinger+, 2011)
J/ApJS/200/12 : CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)
Byte-by-byte Description of file: tables1.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SN Supernova name
8- 19 A12 --- SNhost Host galaxy name
20- 24 I5 km/s Vcmb Recession velocity in CMB reference frame
26- 29 F4.1 --- TType [-5/9.9]?=- Galaxy morphological T type
31- 36 F6.2 mag KMAG ?=- Galaxy absolute K magnitude
38- 40 F3.2 mag e_KMAG ? rms uncertainty on KMAG
43- 47 F5.2 arcmin R25 Galaxy radius (semimajor axis at the
25.0B-mag/arcsec2 isophote)
49- 52 F4.2 arcmin e_R25 rms uncertainty on R25
55- 58 F4.2 --- Rsn ?=- Deprojected galactocentric distance of
the SN in its host galaxy, in units of
the galaxy radius (Rsn/R25)
60- 62 F3.2 --- e_Rsn ? rms uncertainty on Rsn
65- 68 F4.2 km/s VSiII ?=- SiII 615nm line velocity measured around
maximum light (uncertainty 300-400km/s)
70- 72 F3.2 km/s e_VSiII ? rms uncertainty on VSiII
75- 78 F4.2 --- fu [0/1]?=- Fractional flux in SDSS u'-band
80- 83 F4.2 --- fg [0/1]?=- Fractional flux in SDSS g'-band
85- 88 F4.2 --- fr [0/1]?=- Fractional flux in SDSS r'-band
90- 94 A5 --- SNType Supernovae Ia subtype (1)
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Note (1): classification in 5 subtypes:
IaH = high-velocity (VSiII≥12000km/s), rarely found at large Rsn
IaN = normal-velocity (VSiII<12000km/s)
IaT = over-luminous (1991T-type)
Iabg = sub-luminous (1991db-type)
IaPec = extremely peculiar 2002cx-type
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History:
* 27-May-2013: From electronic version of the journal
* 11-Sep-2014: Two Host galaxy names corrected
(End) Patricia Vannier [CDS] 24-Apr-2013