J/ApJ/759/107 Core-collapse SNe and host galaxies (Kelly+, 2012)
Core-collapse supernovae and host galaxy stellar populations.
Kelly P.L., Kirshner R.P.
<Astrophys. J., 759, 107 (2012)>
=2012ApJ...759..107K 2012ApJ...759..107K
ADC_Keywords: Galaxies, spectra ; Supernovae ; Redshifts ; Abundances ;
Spectral types
Keywords: galaxies: star formation; gamma ray burst: general; stars: abundances;
supernovae: general
Abstract:
We have used images and spectra of the Sloan Digital Sky Survey to
examine the host galaxies of 519 nearby supernovae (SN). The colors at
the sites of the explosions, as well as chemical abundances, and
specific star formation rates (SFRs) of the host galaxies provide
circumstantial evidence on the origin of each SN type. We examine
separately SN II, SN IIn, SN IIb, SN Ib, SN Ic, and SN Ic with broad
lines (SN Ic-BL). For host galaxies that have multiple spectroscopic
fibers, we select the fiber with host radial offset most similar to
that of the SN. Type Ic SN explode at small host offsets, and their
hosts have exceptionally strongly star-forming, metal-rich, and dusty
stellar populations near their centers. The SN Ic-BL and SN IIb
explode in exceptionally blue locations, and, in our sample, we find
that the host spectra for SN Ic-BL show lower average oxygen
abundances than those for SN Ic. SN IIb host fiber spectra are also
more metal-poor than those for SN Ib, although a significant
difference exists for only one of two strong-line diagnostics. SN
Ic-BL host galaxy emission lines show strong central specific SFRs. In
contrast, we find no strong evidence for different environments for SN
IIn compared to the sites of SN II. Because our SN sample is
constructed from a variety of sources, there is always a risk that
sampling methods can produce misleading results. We have separated the
SN discovered by targeted surveys from those discovered by
galaxy-impartial searches to examine these questions and show that our
results do not depend sensitively on the discovery technique.
Description:
The imaging component of the SDSS DR8 spans 14555deg2 and consists
of 53.9s u'g'r'i'z' exposures taken with the 2.5m telescope at Apache
Point, New Mexico. The complementary fiber SDSS DR8 spectroscopic
survey covers a 9274deg2 subset of the DR8 imaging footprint. We
admit only the spectra that the SDSS pipeline classifies as a galaxy
(SPECTROTYPE="GALAXY"), a step that includes normal galaxies and
Type 2 AGNs but removes quasi-stellar objects (QSOs) and Type 1 AGNs.
We assemble our SN samples from discoveries collected in the Asiago
catalog (Barbon et al. 1999, Cat. B/sn) through 2010 November 6 and 72
PTF core-collapse SN discoveries from 2009 March through 2010 March
(Arcavi et al. 2010ApJ...721..777A 2010ApJ...721..777A). Eight of the SN in the Asiago
catalog (all Type II SN) are also among the Arcavi et al. PTF SN.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 85 519 Host galaxy sample measurements
table8.dat 115 519 Host galaxy SSFR measurements
(version corrected from the author)
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
J/ApJS/200/12 : CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)
J/AJ/143/126 : Spectroscopy of nearby Type Ia supernovae (Blondin+, 2012)
J/MNRAS/416/3138 : SN 2009jf light curves (Valenti+, 2011)
J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)
J/MNRAS/412/1419 : Nearby supernova rates (Leaman+, 2011)
J/ApJS/197/20 : Core-collapse SN simulations (Shen+, 2011)
J/ApJ/742/L18 : Follow-up photometry of the SN IIb PTF 11eon (Arcavi+, 2011)
J/ApJ/741/97 : Light curves of Ibc supernovae (Drout+, 2011)
J/ApJ/717/342 : Type Ibc SNe in disturbed galaxies (Habergham+, 2010)
J/AJ/135/1598 : Optical spectroscopy of type Ia supernovae (Matheson+, 2008)
J/ApJ/687/1201 : SN and LGRB locations in their host galaxies (Kelly+, 2008)
J/ApJ/673/999 : Supernova and host galaxies metallicities (Prieto+, 2008)
J/ApJ/666/674 : ESSENCE supernova survey (Miknaitis+, 2007)
J/PASP/117/773 : SN host galaxies classifications. III (van den Bergh+, 2005)
http://www.cfa.harvard.edu/supernova/SNarchive.html : The CfA SN archive
http://www.cbat.eps.harvard.edu/lists/Supernovae.html : IAU list of SNe
http://www.sdss.org/ : SDSS home page
Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- SN SN Name (YYYYaa or PTFYYaaa)
10- 17 A8 --- Type Spectroscopic SN Type
19 I1 --- r_Type ? Reference for Type (G1)
21- 25 F5.3 --- z [0/0.08] Redshift
27 A1 --- DMeth Targeted (T) or Galaxy-Impartial (I) SN Search
29 A1 --- DType Professional (P) or Amateur (A) SN Search
31- 85 A55 --- DTeam SN Search Name (1)
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Note (1): Search programs are:
* ESSENCE (Miknaitis et al. 2007, Cat. J/ApJ/666/674);
* LOSS (Lick Observatory Supernova Search
(Filippenko et al. 2001ASPC..246..121F 2001ASPC..246..121F; Filippenko 2003fthp.conf..171F)
* PTF (The Palomar Transient Factory; Law et al. 2009PASP..121.1395L 2009PASP..121.1395L)
* BAO: Beijing Astronomical Observatory
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- SN SN Name
10- 17 A8 --- Type Spectroscopic SN Type
19- 19 I1 --- r_Type ? Reference for Type (G1)
21- 24 F4.2 --- SNoff [0.02/9]? Deprojected SN offset normalized
by half-light radius
26- 30 F5.2 [Msun] logM [7/13]? 50th percentile log host stellar mass
32- 36 F5.2 [Msun] b_logM ? 16th percentile of logM
38- 42 F5.2 [Msun] B_logM ? 84th percentile of logM
44- 47 F4.2 --- OffS [0.02/2.7]? Deprojected fiber offset
normalized by half-light radius of spectrum
used for SSFR
49- 54 F6.2 [yr-1] SSFR [-12.5/-7.6]? 50th percentile specific star
formation rate
56- 61 F6.2 [yr-1] b_SSFR ? 16th percentile of SSFR
63- 68 F6.2 [yr-1] B_SSFR ? 84th percentile of SSFR
70- 73 F4.2 --- Foff [0.03/2.7]? Deprojected fiber offset
normalized by half-light radius of spectrum
used for oxygen abundance
75- 78 F4.2 [-] T04 [7/10]? 50th percentile Tremonti
(2004ApJ...613..898T 2004ApJ...613..898T) oxygen abundance
80- 83 F4.2 [-] b_T04 ? 16th percentile of T04
85- 88 F4.2 [-] B_T04 ? 84th percentile of T04
90- 93 F4.2 [-] PP04 [7/9]? Pettini & Pagel (2004MNRAS.348L..59P 2004MNRAS.348L..59P)
oxygen abundance
95- 98 F4.2 [-] e_PP04 ? Uncertainty in PP04
100-104 F5.2 mag AV [-0.55/4.63]? The V band extinction
106-109 F4.2 mag e_AV ? Uncertainty in AV
111-115 F5.2 mag u-z [-0.8/5]? SDSS u-z color index near
explosion site
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Global notes:
Note (G1): Reference as follows:
1 = Modjaz et al. 2014AJ....147...99M 2014AJ....147...99M
2 = Sanders et al. 2012ApJ...758..132S 2012ApJ...758..132S
3 = this work.
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Acknowledgment:
Patrick L. Kelly for corrected values of
SSFR in table 8.
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 10-Jul-2014