J/MNRAS/481/566 Properties of 333 SNe and their 269 hosts (Karapetyan+, 2018)
The impact of spiral density waves on the distribution of supernovae.
Karapetyan A.G., Hakobyan A.A., Barkhudaryan L.V., Mamon G.A.,
Kunth D., Adibekyan V., Turatto M.
<Mon. Not. R. Astron. Soc. 481, 566 (2018)>
=2018MNRAS.481..566K 2018MNRAS.481..566K (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Galaxies, optical ; Galaxy catalogs ;
Morphology ; Positional data ; Surveys
Keywords: supernovae: general - galaxies: kinematics and dynamics -
galaxies: spiral - galaxies: star formation - galaxies: structure
Abstract:
We present an analysis of the impact of spiral density waves (DWs) on
the radial and surface density distributions of supernovae (SNe) in
host galaxies with different arm classes. We use a well-defined sample
of 269 relatively nearby, low-inclination, morphologically
non-disturbed and unbarred Sa-Sc galaxies from the Sloan Digital Sky
Survey, hosting 333 SNe. Only for core-collapse (CC) SNe, a
significant difference appears when comparing their R25-normalized
radial distributions in long-armed grand-design (LGD) versus non-GD
(NGD) hosts, with that in LGD galaxies being marginally inconsistent
with an exponential profile, while SNe Ia exhibit exponential surface
density profiles regardless of the arm class. Using a smaller sample
of LGD galaxies with estimated corotation radii (RC), we show that
the RC-normalized surface density distribution of CC SNe indicates a
dip at corotation. Although not statistically significant, the high CC
SNe surface density just inside and outside corotation may be the sign
of triggered massive star formation by the DWs. Our results may, if
confirmed with larger samples, support the large-scale shock scenario
induced by spiral DWs in LGD galaxies, which predicts a higher star
formation efficiency around the shock fronts, avoiding the corotation
region.
Description:
The full database of 333 individual SNe (SN designation, type, and
offset from host galaxy nucleus) and their 269 hosts (galaxy SDSS
designation, distance, morphological type, elongation, position angle,
corrected g-band D25, and spiral arm class).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 110 333 Properties of 333 SNe and their 269 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)
J/MNRAS/456/2848 : Properties of 500 SNe and their 419 hosts (Hakobyan+, 2016)
J/MNRAS/459/3130 : Lists of arm and interarm supernovae (Aramyan+, 2016)
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- 21 A21 --- SN Supernova (SN) designation
23- 28 A6 --- Type SN type (from spectroscopy)
29 A1 --- n_Type [*:?] Uncertainty flag/note on SN type (1)
31- 36 F6.2 arcsec oRA SN offset right ascension from host galaxy
nucleus, in the E/W direction
37 A1 --- n_oRA [EW] E/W direction of SN offset oRA
39- 44 F6.2 arcsec oDE SN offset declination from host galaxy
nucleus, in the N/S direction
45 A1 --- n_oDE [NS] N/S direction of SN offset oDE
47- 65 A19 --- Gal1 SN host galaxy identification (2)
67- 75 A9 --- Gal2 ? PGC names for host galaxies included in
Table 4 of the paper
77- 83 F7.3 Mpc Dist Host galaxy distance
85- 87 A3 --- MType Host galaxy morphological type
88 A1 --- u_MType [:] Uncertainty flag on morphology (3)
90- 94 F5.3 --- a/b Host galaxy axial ratio
96- 98 I3 deg PA Host galaxy position angle
100-106 F7.2 arcsec Diam Host galaxy diameter (4)
108-109 I2 deg AC Host galaxy arm class
110 A1 --- u_AC [:] Uncertainty flag on arm class (5)
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Note (1): Note on SN type as follows:
* = when SN type is inferred from the light curve
: = uncertainties in SN type
? = highly uncertain SN type
Note (2): JHHMMSS.ss+DDMMSS.s for SDSS JHHMMSS.ss+DDMMSS.s
An alternative name is mentioned when SDSS identification was not
possible to obtain.
Note (3): Uncertainty on host galaxy morphological type is are marked by ":".
Note (4): Corrected major axis in arcsec (isophotal level of 25mag/arcsec2
in the SDSS g-band) of the host galaxy.
Note (5): Uncertainty on arm class is marked by ":".
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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
Hakobyan et al., Paper III 2016MNRAS.456.2848H 2016MNRAS.456.2848H, Cat. J/MNRAS/456/2848
Aramyan et al., Paper IV 2016MNRAS.459.3130A 2016MNRAS.459.3130A, Cat. J/MNRAS/459/3130
(End) Artur Hakobyan [BAO], Patricia Vannier [CDS] 02-Oct-2018