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J/ApJ/717/342        Type Ibc SNe in disturbed galaxies       (Habergham+, 2010)

Type Ibc supernovae in disturbed galaxies: evidence for a top-heavy initial mass function. Habergham S.M., Anderson J.P., James P.A. <Astrophys. J., 717, 342-347 (2010)> =2010ApJ...717..342H
ADC_Keywords: Supernovae ; Galaxies, nearby ; Photometry, H-alpha Keywords: galaxies: interactions - galaxies: ISM - supernovae: general Abstract: We compare the radial locations of 178 core-collapse supernovae (CCSNe) to the R-band and Hα light distributions of their host galaxies. When the galaxies are split into "disturbed" and "undisturbed" categories, a striking difference emerges. The disturbed galaxies have a central excess of CCSNe and this excess is almost completely dominated by supernovae of types Ib, Ic, and Ib/c, whereas type II supernovae dominate in all other environments. The difference cannot easily be explained by metallicity or extinction effects, and thus we propose that this is direct evidence for a stellar initial mass function that is strongly weighted toward high-mass stars, specifically in the central regions of disturbed galaxies. Description: The sample used in this work consists of 140 local (recession velocity <6000km/s) spiral galaxies, hosts to 178 core-collapse supernovae (CCSNe) (110 SNII and 68 SNIbc), for which we have Hα and R-band observations from the Liverpool Telescope and Isaac Newton Telescope. This is the same data set as used by Anderson & James (2009MNRAS.399..559A) with a small number of subsequent observations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 36 114 Undisturbed host galaxy sample used in this analysis table2.dat 36 64 Disturbed host galaxy sample used in this analysis
See also: B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-) II/256 : Sternberg Supernova Catalogue, 2004 version (Tsvetkov+, 2004) J/ApJS/197/20 : Relativistic EOS for core-collapse SN simulations (Shen+, 2011) J/MNRAS/416/3138 : SN 2009jf light curves (Valenti+, 2011) J/ApJ/708/661 : SDSS-II SN Survey: SNe II-P (D'Andrea+, 2010) J/A+A/508/371 : UBVRIJHK observations of SN 2007gr (Hunter+, 2009) J/MNRAS/394/2266 : SN 2005cs one-year photometry (Pastorello+, 2009) J/ApJ/687/1201 : SN and LGRB locations in their host galaxies (Kelly+, 2008) J/MNRAS/372/1315 : UBVRI photometry of SN 2004et (Sahu+, 2006) J/PASP/115/1280 : Classifications of SN host galaxies (van den Bergh+, 2003) : IAU list of SNe Byte-by-byte Description of file: table[12].dat
Bytes Format Units Label Explanations
1- 12 A12 --- Host Host galaxy name 14- 19 A6 --- SN Supernova identification 21- 24 A4 --- SN.t Supernova type (II, IIL, IIP, IIn, Ib, Ic or Ib/c) 26- 30 F5.3 --- Fr(R) ? Fractional of R-band light within SN position 32- 36 F5.3 --- Fr(Ha) ? Fractional of Hα light within SN position
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 05-Jun-2012
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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