The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am<sup>∗</sup>

Tartaglia, L.; Sand, David J.; Valenti, S.; Wyatt, S.; Anderson, J. P.; Arcavi, I.; Ashall, C.; Botticella, M. T.; Cartier, R.; Chen, Ting-Wan; Cikota, Aleksandar; Coulter, D. A.; Valle, M. Della; Foley, R. J.; Gal‐Yam, A.; Galbany, L.; Gall, C.; Haislip, J. B.; Harmanen, J.; Hosseinzadeh, G.; Howell, D. A.; Hsiao, E. Y.; Inserra, C.; Jha, Saurabh W.; Kankare, E.; Kilpatrick, C. D.; Kouprianov, V. V.; Kuncarayakti, H.; Maccarone, Thomas J.; Maguire, K.; Mattila, S.; Mazzali, Paolo A.; McCully, C.; Melandri, A.; Morrell, N.; Phillips, M. M.; Pignata, G.; Piro, Anthony L.; Prentice, S.; Reichart, D.; Rojas-Bravo, C.; Smartt, S. J.; Smith, K.; Sollerman, J.; Stritzinger, M. D.; Sullivan, M.; Taddia, F.; Young, D. R.

doi:10.3847/1538-4357/aaa014

Cited by 100 publications

(73 citation statements)

References 137 publications

(215 reference statements)

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“…A similar approach Article number, page 3 of 37 is to consider the evolution of the spectral energy distribution (SED) computed using those bands typically unaffected by the presence of strong emission lines, which hence map more closely the shape of the spectral continuum (BV IHK). Following the prescriptions of Tartaglia et al (2018) (see also Elias-Rosa et al 2006, for an equivalent approach), we fit the evolution of the SED of SN 2015da to that of SN 2010jl (computed using the same bands), we find a good agreement with the previous result, obtaining E(B − V) 0.92 ± 0.10 mag.…”

Section: Introductionsupporting

confidence: 69%

The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell

Tartaglia

Pastorello

Sollerman

et al. 2020

A&A

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We report the results of the first ∼ 4 years of spectroscopic and photometric monitoring of the Type IIn supernova SN 2015da (aka PSN J13522411+3941286, or iPTF16tu). The supernova exploded in the nearby spiral galaxy NGC 5337, in a relatively highly extinguished environment. SN 2015da shows prominent Balmer lines in emission with narrow components at all times and a slow rise to maximum. In addition, early observations performed by amateur astronomers give a very well-constrained explosion epoch. The observables are consistent with continuous interaction between the supernova ejecta and a dense and extended H-rich circumstellar medium. This is likely the mechanism powering the light curve, as confirmed by the analysis of the pseudo bolometric light curve, which gives a total radiated energy 10 51 erg. Modeling the light curve in the context of a supernova shock breakout through a dense circumstellar medium allowed us to infer the mass of the pre-existing gas to be > 8.2 M , with an extreme mass-loss rate for the progenitor star 0.4 − 0.8 M yr −1 , suggesting that most of the circumstellar gas was produced during multiple eruptive events. Near-and mid-infrared observations reveal a flux excess in these domains, similar to those observed in SN 2010jl and other interacting transients, likely due to pre-existing radiatively-heated dust surrounding the supernova. By modeling the infrared excess, we infer a mass 0.4 × 10 −3 M for the dust.

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Section: Introductionsupporting

confidence: 69%

The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell

Tartaglia

Pastorello

Sollerman

et al. 2020

A&A

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“…Three supernovae have been observed in NGC 1532. The Type II SN 1981A, SN 2016iae, and the Type II SN 2016ija (Tartaglia et al 2018), which exploded serendipitously during our observing campaign.…”

Section: A07 Ic-7 Sn 2016iaementioning

confidence: 81%

Investigating the properties of stripped-envelope supernovae; what are the implications for their progenitors?

Prentice

Ashall

James

et al. 2018

Monthly Notices of the Royal Astronomical Society

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We present observations and analysis of 18 stripped-envelope supernovae observed during 2013 -2018. This sample consists of 5 H/He-rich SNe, 6 H-poor/He-rich SNe, 3 narrow lined SNe Ic and 4 broad lined SNe Ic. The peak luminosity and characteristic time-scales of the bolometric light curves are calculated, and the light curves modelled to derive 56 Ni and ejecta masses (M Ni and M ej ). Additionally, the temperature evolution and spectral line velocity-curves of each SN are examined. Analysis of the [O i] line in the nebular phase of eight SNe suggests their progenitors had initial masses < 20 M . The bolometric light curve properties are examined in combination with those of other SE events from the literature. The resulting dataset gives the M ej distribution for 80 SE-SNe, the largest such sample in the literature to date, and shows that SNe Ib have the lowest median M ej , followed by narrow lined SNe Ic, H/He-rich SNe, broad lined SNe Ic, and finally gamma-ray burst SNe. SNe Ic-6/7 show the largest spread of M ej ranging from ∼ 1.2 − 11 M , considerably greater than any other subtype. For all SE-SNe = 2.8 ± 1.5 M which further strengthens the evidence that SE-SNe arise from low mass progenitors which are typically < 5 M at the time of explosion, again suggesting M ZAMS < 25 M . The low and lack of clear bimodality in the distribution implies < 30 M progenitors and that envelope stripping via binary interaction is the dominant evolutionary pathway of these SNe.

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“…No previous data has been published for SN 2017fzw, and so we measure it's light curve parameters directly (Tables 1 & 2). This SN Ia was discovered by the Distance Less Than 40 Mpc (DLT40) fast cadence nearby SN search (Tartaglia et al 2018), and its full datasetincluding further work on its nebular spectra -will be studied elsewhere (Galbany et al, in preparation). We simply provide Hα detection limits here.…”

Section: Nebular Spectroscopy Of Fast Declining Sn Iamentioning

confidence: 99%

Nebular Hα Limits for Fast Declining SNe Ia

Sand

Amaro

Moe

et al. 2019

ApJL

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One clear observational prediction of the single degenerate progenitor scenario as the origin of type Ia supernovae (SNe) is the presence of relatively narrow (≈1000 km s −1 ) Hα emission at nebular phases, although this feature is rarely seen. We present a compilation of nebular phase Hα limits for SN Ia in the literature and demonstrate that this heterogenous sample has been biased towards SN Ia with relatively high luminosities and slow decline rates, as parameterized by ∆m 15 (B), the difference in B-band magnitude between maximum light and fifteen days afterward. Motivated by the need to explore the full parameter space of SN Ia and their subtypes, we present two new and six previously published nebular spectra of SN Ia with ∆m 15 (B) > 1.3 mag (including members of the transitional and SN1991bg-like subclasses) and measure nondetection limits of L Hα < 0.85-9.9×10 36 ergs s −1 , which we confirmed by implanting simulated Hα emission into our data. Based on the lastest models of swept-up material stripped from a nondegenerate companion star, these L Hα values correspond to hydrogen mass limits of M H 1-3×10 −4 M ⊙ , roughly three orders of magnitude below that expected for the systems modeled, although we note that no simulations of Hα nebular emission in such weak explosions have yet been performed. Despite the recent detection of strong Hα in ASASSN-18tb (SN 2018fhw; ∆m 15 (B) = 2.0 mag), we see no evidence that fast declining systems are more likely to have late time Hα emission, although a larger sample is needed to confirm this result.

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The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am^∗

Cited by 100 publications

References 137 publications

The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell

The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell

Investigating the properties of stripped-envelope supernovae; what are the implications for their progenitors?

Nebular Hα Limits for Fast Declining SNe Ia

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The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am∗

Cited by 100 publications

References 137 publications

The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell

The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell

Investigating the properties of stripped-envelope supernovae; what are the implications for their progenitors?

Nebular Hα Limits for Fast Declining SNe Ia

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Product

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The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am^∗