Carnegie Supernova Project-II: Extending the Near-infrared Hubble Diagram for Type Ia Supernovae to <i>z</i> ∼ 0.1

Phillips, M. M.; Contreras, C.; Hsiao, E. Y.; Morrell, N.; Burns, C. R.; Stritzinger, M. D.; Ashall, C.; Freedman, Wendy L.; Hoêflich, P.; Persson, S. E.; Piro, Anthony L.; Suntzeff, Nicholas B.; Uddin, S. A.; Anais, J.; Baron, Edward; Busta, L.; Campillay, A.; Castellón, S.; Corco, C.; Diamond, T.; Gall, C.; González, C.; Holmbo, S.; Krisciunas, K.; Roth, M.; Serón, J.; Taddia, F.; Torres-Robledo, S.; Anderson, J. P.; Baltay, C.; Folatelli, G.; Galbany, L.; Goobar, A.; Hadjiyska, E.; Hamuy, M.; Kasliwal, M. M.; Lidman, C.; Nugent, P.; Perlmutter, S.; Rabinowitz, D.; Ryder, S. D.; Schmidt, B. P.; Shappee, B. J.; Walker, E. S.

doi:10.1088/1538-3873/aae8bd

Cited by 81 publications

(63 citation statements)

References 104 publications

(188 reference statements)

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“…In particular, future data releases from the Foundation Supernova Survey and the Young Supernova Experiment (YSE; Jones et al 2021) will increase the already large sample of low-SNe Ia with Pan-STARRS light curves. Complementing this, the Carnegie Supernova Project-II (CSP-II Phillips et al 2019) will augment the previous CSP-I data releases (Contreras et al 2010;Stritzinger et al 2011;Krisciunas et al 2017) to provide further high quality observations at 0.1. This will include vital near-infrared photometry, which can be particularly valuable in untangling the complex puzzle of supernova-host correlation (Ponder et al 2020;Uddin et al 2020;Johansson et al 2021).…”

Section: Discussionmentioning

confidence: 99%

Testing the consistency of dust laws in SN Ia host galaxies: A BayeSN Examination of Foundation DR1

Thorp

Mandel

Jones

et al. 2021

Monthly Notices of the Royal Astronomical Society

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We apply BayeSN, our new hierarchical Bayesian model for the SEDs of Type Ia supernovae (SNe Ia), to analyse the griz light curves of 157 nearby SNe Ia (0.015 < z < 0.08) from the public Foundation DR1 dataset. We train a new version of BayeSN, continuous from 0.35–0.95 μm, which we use to model the properties of SNe Ia in the rest-frame z-band, study the properties of dust in their host galaxies, and construct a Hubble diagram of SN Ia distances determined from full griz light curves. Our griz Hubble diagram has a low total RMS of 0.13 mag using BayeSN, compared to 0.16 mag using SALT2. Additionally, we test the consistency of the dust law RV between low- and high-mass host galaxies by using our model to fit the full time- and wavelength-dependent SEDs of SNe Ia up to moderate reddening (peak apparent B − V ≲ 0.3). Splitting the population at the median host mass, we find RV = 2.84 ± 0.31 in low-mass hosts, and RV = 2.58 ± 0.23 in high-mass hosts, both consistent with the global value of RV = 2.61 ± 0.21 that we estimate for the full sample. For all choices of mass split we consider, RV is consistent across the step within ≲ 1.2σ. Modelling population distributions of dust laws in low- and high-mass hosts, we find that both subsamples are highly consistent with the full sample’s population mean μ(RV) = 2.70 ± 0.25 with a 95 per cent upper bound on the population σ(RV) < 0.61. The RV population means are consistent within ≲ 1.2σ. We find that simultaneous fitting of host-mass-dependent dust properties within our hierarchical model does not account for the conventional mass step.

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Section: Discussionmentioning

confidence: 99%

Testing the consistency of dust laws in SN Ia host galaxies: A BayeSN Examination of Foundation DR1

Thorp

Mandel

Jones

et al. 2021

Monthly Notices of the Royal Astronomical Society

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“…The improved ability to determine standard distances, together with the reduced sensitivity to dust extinction, has motivated several recent projects to pursue larger samples of SNe Ia observed in the rest-frame NIR: CSP-I, II (Contreras et al 2010;Stritzinger et al 2011;Kattner et al 2012;Krisciunas et al 2017;Phillips et al 2019);CfA (Wood-Vasey et al 2008;Friedman et al 2015); RAISINS (Kirshner 2012); SweetSpot (Weyant et al 2014(Weyant et al , 2018; and SIRAH (Jha et al 2019). Section 2.1 overviews the NIR sample currently available and used in this analysis.…”

Section: Sn Ia and Host Galaxy Samplementioning

confidence: 99%

Are Type Ia Supernovae in Rest-frame H Brighter in More Massive Galaxies?

Ponder

Wood‐Vasey

Weyant

et al. 2021

ApJ

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We analyze 143 Type Ia supernovae (SNe Ia) observed in H band (1.6–1.8 μm) and find that SNe Ia are intrinsically brighter in H band with increasing host galaxy stellar mass. We find that SNe Ia in galaxies more massive than 1010.43 M ⊙ are 0.13 ± 0.04 mag brighter in H than SNe Ia in less massive galaxies. The same set of SNe Ia observed at optical wavelengths, after width–color–luminosity corrections, exhibit a 0.10 ± 0.03 mag offset in the Hubble residuals. We observe an outlier population ( ∣ Δ H max ∣ > 0.5 mag) in the H band and show that removing the outlier population moves the mass threshold to 1010.65 M ⊙ and reduces the step in H band to 0.08 ± 0.04 mag, but the equivalent optical mass step is increased to 0.13 ± 0.04 mag. We conclude that the outliers do not drive the brightness–host-mass correlation. Less massive galaxies preferentially host more higher-stretch SNe Ia, which are intrinsically brighter and bluer. It is only after correction for width–luminosity and color–luminosity relationships that SNe Ia have brighter optical Hubble residuals in more massive galaxies. Thus, finding that SNe Ia are intrinsically brighter in H in more massive galaxies is an opposite correlation to the intrinsic (pre-width–luminosity correction) optical brightness. If dust and the treatment of intrinsic color variation were the main driver of the host galaxy mass correlation, we would not expect a correlation of brighter H-band SNe Ia in more massive galaxies.

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“…Multi-colour photometry was obtained using a number of facilities: the Las Cumbres Observatory (LCOGT) 1-m robotic telescope network with the SBIG instrument, the LCOGT 2-m robotic telescopes with the Spectral camera (Brown et al 2013), the European Southern Observatory (ESO) New Technology Telescope (NTT) using the EFOSC2 instrument (Buzzoni et al 1984), and the Liverpool Telescope (LT) using the IO:O instrument (Steele et al 2004). Additional follow up was conducted as part of the Carnegie Supernova Project-II (CSP-II; Phillips et al 2019) using the Henrietta Swope Telescope (Swope; Perez et al 2012). The LSQ, LCOGT, LT, NTT and Swope optical photometry is presented in Table 1 and in Fig.…”

Section: Optical Photometrymentioning

confidence: 99%

LSQ13ddu: a rapidly evolving stripped-envelope supernova with early circumstellar interaction signatures

Clark

Maguire

Inserra

et al. 2020

Monthly Notices of the Royal Astronomical Society

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This paper describes the rapidly evolving and unusual supernova LSQ13ddu, discovered by the La Silla-QUEST survey. LSQ13ddu displayed a rapid rise of just 4.8±0.9 d to reach a peak brightness of −19.70±0.02 mag in the LSQgr band. Early spectra of LSQ13ddu showed the presence of weak and narrow He i features arising from interaction with circumstellar material (CSM). These interaction signatures weakened quickly, with broad features consistent with those seen in stripped-envelope SNe becoming dominant around two weeks after maximum. The narrow He i velocities are consistent with the wind velocities of luminous blue variables but its spectra lack the typically seen hydrogen features. The fast and bright early light curve is inconsistent with radioactive 56 Ni powering but can be explained through a combination of CSM interaction and an underlying 56 Ni decay component that dominates the later time behaviour of LSQ13ddu. Based on the strength of the underlying broad features, LSQ13ddu appears deficient in He compared to standard SNe Ib.

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Carnegie Supernova Project-II: Extending the Near-infrared Hubble Diagram for Type Ia Supernovae to z ∼ 0.1

Cited by 81 publications

References 104 publications

Testing the consistency of dust laws in SN Ia host galaxies: A BayeSN Examination of Foundation DR1

Testing the consistency of dust laws in SN Ia host galaxies: A BayeSN Examination of Foundation DR1

Are Type Ia Supernovae in Rest-frame H Brighter in More Massive Galaxies?

LSQ13ddu: a rapidly evolving stripped-envelope supernova with early circumstellar interaction signatures

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