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Two transitional type Ia supernovae located in the Fornax cluster member NGC 1404: SN 2007on and SN 2011iv
- Source :
- CONICET Digital (CONICET), Consejo Nacional de Investigaciones Científicas y Técnicas, instacron:CONICET, NASA Astrophysics Data System, Gall, C, Stritzinger, M D, Ashall, C, Baron, E, Burns, C R, Hoeflich, P, Hsiao, E Y, Mazzali, P A, Phillips, M M, Filippenko, A V, Anderson, J P, Benetti, S, Brown, P J, Campillay, A, Challis, P, Contreras, C, Rosa, N E D L, Folatelli, G, Foley, R J, Fraser, M, Holmbo, S, Marion, G H, Morrell, N, Pan, Y-C, Pignata, G, Suntzeff, N B, Taddia, F, Robledo, S T & Valenti, S 2017, ' Two transitional type Ia supernovae located in the Fornax cluster member NGC 1404: SN 2007on and SN 2011iv ' Astronomy & Astrophysics . DOI: 10.1051/0004-6361/201730886, Gall, C, Stritzinger, M D, Ashall, C, Baron, E, Burns, C R, Hoeflich, P, Hsiao, E Y, Mazzali, P A, Phillips, M M, Filippenko, A V, Anderson, J P, Benetti, S, Brown, P J, Campillay, A, Challis, P, Contreras, C, Elias de la Rosa, N, Folatelli, G, Foley, R J, Fraser, M, Holmbo, S, Marion, G H, Morrell, N, Pan, Y-C, Pignata, G, Suntzeff, N B, Taddia, F, Torres Robledo, S & Valenti, S 2018, ' Two transitional type Ia supernovae located in the Fornax cluster member NGC 1404 : SN 2007on and SN 2011iv ', Astronomy & Astrophysics, vol. 611, 58 . https://doi.org/10.1051/0004-6361/201730886, SEDICI (UNLP), Universidad Nacional de La Plata, instacron:UNLP
- Publication Year :
- 2018
- Publisher :
- EDP Sciences, 2018.
-
Abstract
- We present an analysis of ultraviolet (UV) to near-infrared observations of the fast-declining Type Ia supernovae (SNe Ia) 2007on and 2011iv, hosted by the Fornax cluster member NGC 1404. The B-band light curves of SN 2007on and SN 2011iv are characterised by Δm15 (B) decline-rate values of 1.96 mag and 1.77 mag, respectively. Although they have similar decline rates, their peak B- and H-band magnitudes differ by ~ 0.60 mag and ~0.35 mag, respectively. After correcting for the luminosity vs. decline rate and the luminosity vs. colour relations, the peak B-band and H-band light curves provide distances that differ by ~ 14% and ~ 9%, respectively. These findings serve as a cautionary tale for the use of transitional SNe Ia located in early-type hosts in the quest to measure cosmological parameters. Interestingly, even though SN 2011iv is brighter and bluer at early times, by three weeks past maximum and extending over several months, its B - V colour is 0.12 mag redder than that of SN 2007on. To reconcile this unusual behaviour, we turn to guidance from a suite of spherical one-dimensional Chandrasekhar-mass delayed-detonation explosion models. In this context, 56Ni production depends on both the so-called transition density and the central density of the progenitor white dwarf. To first order, the transition density drives the luminosity-width relation, while the central density is an important second-order parameter. Within this context, the differences in the B - V colour evolution along the Lira regime suggest that the progenitor of SN 2011iv had a higher central density than SN 2007on.<br />Instituto de Astrofísica de La Plata<br />Facultad de Ciencias Astronómicas y Geofísicas
- Subjects :
- Individual: Sn 2007on [Supernovae]
Ciencias Físicas
Supernovae individual SN 2011iv
DELAYED-DETONATION MODEL
Astrophysics
01 natural sciences
THERMONUCLEAR SUPERNOVAE
Luminosity
Dust, Extinction
purl.org/becyt/ford/1 [https]
ULTRAVIOLET-SPECTRA
NEAR-INFRARED OBSERVATIONS
CHANDRASEKHAR-MASS MODELS
Fornax Cluster
010303 astronomy & astrophysics
QC
QB
High Energy Astrophysical Phenomena (astro-ph.HE)
astro-ph.HE
Physics
Dust
Extinction
Individual: Sn 2011iv [Supernovae]
Supernova
Astrophysics - Solar and Stellar Astrophysics
Transition density
ASYMMETRIC EXPLOSION
Astrophysics - High Energy Astrophysical Phenomena
CIENCIAS NATURALES Y EXACTAS
astro-ph.SR
FOS: Physical sciences
Context (language use)
0103 physical sciences
Ciencias Naturales
general individual SN 2007on [Supernovae]
Solar and Stellar Astrophysics (astro-ph.SR)
Ciencias Exactas
LIGHT CURVES
General [Supernovae]
010308 nuclear & particles physics
ACCRETING WHITE-DWARFS
Física
White dwarf
LUMINOSITY INDICATORS
Astronomy and Astrophysics
purl.org/becyt/ford/1.3 [https]
Light curve
First order
Astronomía
Space and Planetary Science
Supernovae: general individual SN 2007on
SURFACE BRIGHTNESS FLUCTUATIONS
Subjects
Details
- ISSN :
- 14320746 and 00046361
- Volume :
- 611
- Database :
- OpenAIRE
- Journal :
- Astronomy & Astrophysics
- Accession number :
- edsair.doi.dedup.....5ad15aaa97f16f6bfd30bf0a9777df20