Studying the Ultraviolet Spectrum of the First Spectroscopically Confirmed Supernova at Redshift Two

Smith, M.; Sullivan, M.; Nichol, R. C.; Galbany, L.; D’Andrea, C. B.; Inserra, C.; Lidman, C.; Rest, A.; Schirmer, M.; Filippenko, A. V.; Zheng, Wei; Cenko, S. Bradley; Angus, C.; Brown, P. J.; Davis, Tamara M.; Finley, D. A.; Foley, R. J.; González–Gaitán, S.; Gutiérrez, C. P.; Kessler, R.; Kuhlmann, S.; Marriner, J.; Möller, A.; Nugent, P.; Prajs, S.; Thomas, R. C.; Wolf, R. C.; Zenteno, A.; Abbott, T. M. C.; Abdalla, F. B.; Allam, S.; Annis, J.; Bechtol, K.; Benoit-Lévy, A.; Bertin, E.; Brooks, D.; Burke, D. L.; Rosell, A. Carnero; Kind, M. Carrasco; Carretero, J.; Castander, F. J.; Crocce, M.; Cunha, C. E.; Costa, L. N. da; Davis, C.; Desai, S.; Diehl, H. T.; Doel, P.; Eifler, T. F.; Flaugher, B.; Fosalba, P.; Frieman, Joshua A.; García-Bellido, J.; Gaztañaga, E.; Gerdes, D. W.; Goldstein, D.; Gruen, David; Gruendl, R. A.; Gschwend, J.; Gutiérrez, G.; Honscheid, K.; James, D. J.; Johnson, M. W. G.; Kuêhn, K.; Kuropatkin, N.; Li, T. S.; Lima, M.; Maia, M. A. G.; Marshall, J. L.; Martini, Paul; Menanteau, F.; Miller, Christopher J.; Miquel, R.; Ogando, R. L. C.; Petravick, D.; Malagón, A. A. Plazas; Romer, A. K.; Rykoff, E. S.; Šako, M.; Sánchez, E.; Scarpine, V.; Schindler, R. H.; Schubnell, M.; Sevilla-Noarbe, I.; Smith, R. C.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Swanson, M. E. C.; Tarlè, G.; Walker, A. R.

doi:10.3847/1538-4357/aaa126

Cited by 37 publications

(39 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Dark Energy Survey Supernova (DES-SN) Programme has proven to be an excellent laboratory for discovering unusual types of events with its deep (∼24 mag per visit) multicolour griz photometry. It has, for example, already probed the diversity of a sample of SLSNe (Angus et al 2019) with objects up to z ≈ 2 (DES16C2nm; Smith et al 2018) and unveiled a sample of rapidly evolving transients (Pursiainen et al 2018). In this paper, we present two additional peculiar transients discovered by DES-SN, DES17X1boj, and DES16E2bjy, with highly atypical doublepeaked light curves nearly identical to each other.…”

mentioning

confidence: 66%

The mystery of photometric twins DES17X1boj and DES16E2bjy

Pursiainen

Gutiérrez

Wiseman

et al. 2020

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

We present an analysis of DES17X1boj and DES16E2bjy, two peculiar transients discovered by the Dark Energy Survey (DES). They exhibit nearly identical double-peaked light curves that reach very different maximum luminosities (Mr = −15.4 and −17.9, respectively). The light-curve evolution of these events is highly atypical and has not been reported before. The transients are found in different host environments: DES17X1boj was found near the nucleus of a spiral galaxy, while DES16E2bjy is located in the outskirts of a passive red galaxy. Early photometric data are well fitted with a blackbody and the resulting moderate photospheric expansion velocities (1800 km s−1 for DES17X1boj and 4800 km s−1 for DES16E2bjy) suggest an explosive or eruptive origin. Additionally, a feature identified as high-velocity Ca ii absorption ($v$ ≈ 9400 km s−1) in the near-peak spectrum of DES17X1boj may imply that it is a supernova. While similar light-curve evolution suggests a similar physical origin for these two transients, we are not able to identify or characterize the progenitors.

show abstract

mentioning

confidence: 66%

The mystery of photometric twins DES17X1boj and DES16E2bjy

Pursiainen

Gutiérrez

Wiseman

et al. 2020

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

show abstract

“…Our understanding of the UV features of SLSNe-I is also improving thanks in large part to spectroscopic studies of highredshift examples (Berger et al 2012;Howell et al 2013;Pan et al 2017;Smith et al 2018). From what has been observed to date, SLSNe-I typically exhibit broad absorption troughs centered around ∼1930, 2200, 2400, and 2660 Å (Smith et al 2018). Spectral synthesis models have attributed these features to blended transitions of iron, cobalt, carbon, titanium, silicon, and magnesium (Mazzali et al 2016).…”

Section: Slsne-imentioning

confidence: 99%

“…At high redshift, this critical UV information is pushed into the optical bands, enabling this wavelength region to be explored with ground-based observations. A number of FUV analyses of SLSNe have been accomplished in this way (Berger et al 2012;Howell et al 2013;Pan et al 2017;Smith et al 2018).…”

Section: Introductionmentioning

confidence: 99%

First Release of High-redshift Superluminous Supernovae from the Subaru HIgh-Z SUpernova CAmpaign (SHIZUCA). II. Spectroscopic Properties

Moriya

Tanaka

Yasuda

et al. 2019

ApJS

Self Cite

View full text Add to dashboard Cite

We present Keck spectroscopic observations of three probable high-redshift superluminous supernovae (SLSNe) from the Subaru HIgh-Z sUpernova CAmpaign (SHIZUCA), confirming redshifts of 1.851, 1.965, and 2.399. The host galaxies were selected for transient monitoring from multiband photometric redshifts. The supernovae are detected during their rise, and the classically scheduled spectra are collected near maximum light. The rest-frame far-ultraviolet (∼1000-2500 Å) spectra include a significant host galaxy flux contribution, and we compare our host-galaxy-subtracted spectra to UV-luminous SNe from the literature. While the signal-to-noise ratios of the spectra presented here are sufficient for redshift confirmation, supernova spectroscopic type confirmation remains inconclusive. The success of the first SHIZUCA Keck spectroscopic follow-up program demonstrates that campaigns such as SHIZUCA are capable of identifying high-redshift SLSNe with sufficient accuracy, speed, and depth for rapid, well-cadenced, and informative follow-up.

show abstract

“…DES data have been used in many studies covering a diverse range of fields (Dark Energy Survey 2016). Notable examples include studies of bodies in the outer solar system (Khain et al 2018, for example), AGN accretion disk sizes (Mudd et al 2018;Yu et al 2020), dwarf galaxies and stellar streams in the halo of the Milky Way (Marshall et al 2019;Li et al 2019, for example) and rare transients such as merging neutron stars (Palmese et al 2017), super-luminous supernovae (Smith et al 2018;Angus et al 2019), and rapidly evolving transients (Pursiainen et al 2018).…”

Section: Des and Ozdesmentioning

confidence: 99%

OzDES multi-object fibre spectroscopy for the Dark Energy Survey: results and second data release

Lidman

Tucker

Davis

et al. 2020

Monthly Notices of the Royal Astronomical Society

Self Cite

View full text Add to dashboard Cite

We present a description of the Australian Dark Energy Survey (OzDES) and summarize the results from its 6 years of operations. Using the 2dF fibre positioner and AAOmega spectrograph on the 3.9-m Anglo-Australian Telescope, OzDES has monitored 771 active galactic nuclei, classified hundreds of supernovae, and obtained redshifts for thousands of galaxies that hosted a transient within the 10 deep fields of the Dark Energy Survey. We also present the second OzDES data release, containing the redshifts of almost 30 000 sources, some as faint as rAB = 24 mag, and 375 000 individual spectra. These data, in combination with the time-series photometry from the Dark Energy Survey, will be used to measure the expansion history of the Universe out to z ∼ 1.2 and the masses of hundreds of black holes out to z ∼ 4. OzDES is a template for future surveys that combine simultaneous monitoring of targets with wide-field imaging cameras and wide-field multi-object spectrographs.

show abstract

Studying the Ultraviolet Spectrum of the First Spectroscopically Confirmed Supernova at Redshift Two

Cited by 37 publications

References 67 publications

The mystery of photometric twins DES17X1boj and DES16E2bjy

The mystery of photometric twins DES17X1boj and DES16E2bjy

First Release of High-redshift Superluminous Supernovae from the Subaru HIgh-Z SUpernova CAmpaign (SHIZUCA). II. Spectroscopic Properties

OzDES multi-object fibre spectroscopy for the Dark Energy Survey: results and second data release

Contact Info

Product

Resources

About