J/MNRAS/456/2848 Properties of 500 SNe and their 419 hosts (Hakobyan+, 2016)
Supernovae and their host galaxies.
III. The impact of bars and bulges on the radial distribution of supernovae in
disc galaxies.
Hakobyan A.A., Karapetyan A.G., Barkhudaryan L.V., Mamon G.A., Kunth D.,
Petrosian A.R., Adibekyan V., Aramyan L.S., Turatto M.
<Mon. Not. R. Astron. Soc. 456, 2848 (2016)>
=2016MNRAS.456.2848H 2016MNRAS.456.2848H (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Galaxies, optical ; Galaxy catalogs ;
Morphology ; Positional data ; Surveys
Keywords: supernovae: general - galaxies: spiral - galaxies: stellar content -
galaxies: structure
Abstract:
We present an analysis of the impact of bars and bulges on the radial
distributions of the different types of supernovae (SNe) in the
stellar discs of host galaxies with various morphologies. We use a
well-defined sample of 500 nearby (≤100Mpc) SNe and their
low-inclined (i≤60deg) and morphologically non-disturbed S0-Sm host
galaxies from the Sloan Digital Sky Survey. We find that in Sa-Sm
galaxies, all core-collapse (CC) and vast majority of SNe Ia belong to
the disc, rather than the bulge component. The radial distribution of
SNe Ia in S0-S0/a galaxies is inconsistent with their distribution in
Sa-Sm hosts, which is probably due to the contribution of the outer
bulge SNe Ia in S0-S0/a galaxies. In Sa-Sbc galaxies, the radial
distribution of CC SNe in barred hosts is inconsistent with that in
unbarred ones, while the distributions of SNe Ia are not significantly
different. At the same time, the radial distributions of both types of
SNe in Sc-Sm galaxies are not affected by bars. We propose that the
additional mechanism shaping the distributions of Type Ia and CC SNe
can be explained within the framework of substantial suppression of
massive star formation in the radial range swept by strong bars,
particularly in early-type spirals. The radial distribution of CC SNe
in unbarred Sa-Sbc galaxies is more centrally peaked and inconsistent
with that in unbarred Sc-Sm hosts, while the distribution of SNe Ia in
unbarred galaxies is not affected by host morphology. These results
can be explained by the distinct distributions of massive stars in the
discs of early- and late-type spirals.
Description:
The full database of 500 individual SNe (SN designation, type, and
offset from host galaxy nucleus) and their 419 host galaxies (galaxy
SDSS designation, distance, morphological type, bar, corrected g-band
D25, a/b, PA, and inclination).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 115 500 Properties of 500 SNe and their 419 hosts
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
J/A+A/544/A81 : Supernovae and their hosts in SDSS DR8 (Hakobyan+, 2012)
J/MNRAS/444/2428 : Disturbance levels of SNe host galaxies (Hakobyan+, 2014)
http://www.sdss.org : SDSS Home Page
Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- SN Supernova (SN) designation
9- 16 A8 --- Type SN type (from spectroscopy)
21- 26 F6.2 arcsec oRA SN offset right ascension from host galaxy
nucleus, in the E/W direction
28 A1 --- n_oRA [E/W] E/W direction of SN offset oRA
32- 37 F6.2 arcsec oDE SN offset declination from host galaxy
nucleus, in the N/S direction
39 A1 --- n_oDE [N/S] N/S direction of SN offset oDE
41- 59 A19 --- Gal SN host galaxy identification (1)
66- 71 F6.3 Mpc Dist Host galaxy distance
74- 77 A4 --- MType Host galaxy morphological type
81 A1 --- u_MType [:?] Uncertainty flag on morphology (2)
84 A1 --- Bar [B] Presence of bar in the host galaxy
87 A1 --- u_Bar [:?] Uncertainty flag on presence of bar (3)
91- 97 F7.2 arcsec Diam Host galaxy diameter (4)
100-104 F5.3 --- a/b Host galaxy axial ratio
107-109 I3 deg PA Host galaxy position angle
112-115 F4.1 deg Inc Host galaxy inclination
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Note (1): JHHMMSS.ss+DDMMSS.s for SDSS JHHMMSS.ss+DDMMSS.s
An alternative name is mentioned when SDSS identification was not
possible to obtain. Unidentified (anonymous) galaxies are listed with the
letter A.
Note (2): Uncertainties in host galaxy morphological type are marked by ":"
and "?" (highly uncertain).
Note (3): Uncertainties in host galaxy bar are marked by ":"
and "?" (highly uncertain).
Note (4): Corrected major axis in arcsec (isophotal level of 25mag/arcsec2
in the SDSS g-band) of the host galaxy.
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Acknowledgements:
Artur Hakobyan, hakobyan(at)bao.sci.am
References:
Hakobyan et al., Paper I 2012A&A...544A..81H 2012A&A...544A..81H, Cat. J/A+A/544/A81
Hakobyan et al., Paper II 2014MNRAS.444.2428H 2014MNRAS.444.2428H, Cat. J/MNRAS/444/2428
(End) Artur Hakobyan [BAO], Patricia Vannier [CDS] 26-Feb-2016