YSE-PZ: A Transient Survey Management Platform that Empowers the Human-in-the-loop

Coulter, D. A.; Jones, D. O.; McGill, Peter; Foley, R. J.; Aleo, Patrick D.; J., Bustamante-Rosell, M.; Chatterjee, Deep; Davis, Kyle W.; Dickinson, Connor; Engel, Alejandro B.; Gagliano, Alexander; Jacobson-Galán, W. V.; Kilpatrick, C. D.; Kutcka, J.; Saux, X. K. Le; Malanchev, Konstantin; Pan, Y.-C.; J., Quiñonez, P.; Rojas-Bravo, C.; Siebert, M. R.; Taggart, K.; Tinyanont, Samaporn; Wang, Q.

doi:10.1088/1538-3873/acd662

Cited by 17 publications

(14 citation statements)

References 111 publications

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“…SN 2023ixf was observed with the Pan-STARRS telescope (PS1/2; Kaiser et al 2002;Chambers et al 2017) between 2023 May 21 and June 2 in grizy bands through the Young Supernova Experiment (YSE; Jones et al 2021). Data storage and/or visualization and follow-up coordination was done through the YSE-PZ web broker (Coulter et al 2022(Coulter et al , 2023. The YSE photometric pipeline is based on photpipe (Rest et al 2005), which relies on calibrations from Magnier et al (2020), Waters et al (2020).…”

Section: Photometric Observationsmentioning

confidence: 99%

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SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova

Jacobson-Galán,

Dessart,

Margutti

et al. 2023

ApJL

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We present UV and/or optical observations and models of SN 2023ixf, a type II supernova (SN) located in Messier 101 at 6.9 Mpc. Early time (flash) spectroscopy of SN 2023ixf, obtained primarily at Lick Observatory, reveals emission lines of H i, He i/ii, C iv, and N iii/iv/v with a narrow core and broad, symmetric wings arising from the photoionization of dense, close-in circumstellar material (CSM) located around the progenitor star prior to shock breakout. These electron-scattering broadened line profiles persist for ∼8 days with respect to first light, at which time Doppler broadened the features from the fastest SN ejecta form, suggesting a reduction in CSM density at r ≳ 1015 cm. The early time light curve of SN 2023ixf shows peak absolute magnitudes (e.g., M u = −18.6 mag, M g = −18.4 mag) that are ≳2 mag brighter than typical type II SNe, this photometric boost also being consistent with the shock power supplied from CSM interaction. Comparison of SN 2023ixf to a grid of light-curve and multiepoch spectral models from the non-LTE radiative transfer code CMFGEN and the radiation-hydrodynamics code HERACLES suggests dense, solar-metallicity CSM confined to r = (0.5–1) × 1015 cm, and a progenitor mass-loss rate of M ̇ = 10 − 2 M ⊙ yr−1. For the assumed progenitor wind velocity of v w = 50 km s−1, this corresponds to enhanced mass loss (i.e., superwind phase) during the last ∼3–6 yr before explosion.

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Section: Photometric Observationsmentioning

confidence: 99%

“…Software: IRAF (Tody 1986;Tody 1993), photpipe (Rest et al 2005), DoPhot (Schechter et al 1993), HOTPANTS (Becker 2015), YSE-PZ (Coulter et al 2022(Coulter et al , 2023, CMFGEN (Hillier & Dessart 2012;Dessart et al 2015), HERACLES (González et al 2007;Vaytet et al 2011;Dessart et al 2015).…”

Section: Appendixmentioning

confidence: 99%

SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova

Jacobson-Galán,

Dessart,

Margutti

et al. 2023

ApJL

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“…There are a number of other related software stacks available with some overlap with SkyPortalʼs capabilities. For example, YSE-PZ is a platform with data-broker-like querying and filtering abilities, and that offers a turn-key solution to teams looking for a focus on transient survey management (Coulter et al 2023). The TOM Toolkit focuses on customization for different science use cases, deployable both as a standalone package as well as with its functionality integrated into larger ecosystems (Street et al 2018).…”

Section: The Time-domain Software Ecosystemmentioning

confidence: 99%

A Data Science Platform to Enable Time-domain Astronomy

Coughlin¹,

Bloom²,

Nir³

et al. 2023

ApJS

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SkyPortal is an open-source software package designed to discover interesting transients efficiently, manage follow-up, perform characterization, and visualize the results. By enabling fast access to archival and catalog data, crossmatching heterogeneous data streams, and the triggering and monitoring of on-demand observations for further characterization, a SkyPortal-based platform has been operating at scale for >2 yr for the Zwicky Transient Facility Phase II community, with hundreds of users, containing tens of millions of time-domain sources, interacting with dozens of telescopes, and enabling community reporting. While SkyPortal emphasizes rich user experiences across common front-end workflows, recognizing that scientific inquiry is increasingly performed programmatically, SkyPortal also surfaces an extensive and well-documented application programming interface system. From back-end and front-end software to data science analysis tools and visualization frameworks, the SkyPortal design emphasizes the reuse and leveraging of best-in-class approaches, with a strong extensibility ethos. For instance, SkyPortal now leverages ChatGPT large language models to generate and surface source-level human-readable summaries automatically. With the imminent restart of the next generation of gravitational-wave detectors, SkyPortal now also includes dedicated multimessenger features addressing the requirements of rapid multimessenger follow-up: multitelescope management, team/group organizing interfaces, and crossmatching of multimessenger data streams with time-domain optical surveys, with interfaces sufficiently intuitive for newcomers to the field. This paper focuses on the detailed implementations, capabilities, and early science results that establish SkyPortal as a community software package ready to take on the data science challenges and opportunities presented by this next chapter in the multimessenger era.

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“…The data were reduced with Photpipe (Rest et al 2005), which has been used for numerous photometric reductions of YSE data (e.g., Kilpatrick et al 2021;Tinyanont et al 2022;Dimitriadis et al 2022;Gagliano et al 2022;Jacobson-Galán et al 2022a, 2022bTerreran et al 2022). The YSE-PZ software was used for a transient discovery alert of SN 2021hpr, as well as for data collation, management, and visualization (Coulter et al 2022(Coulter et al , 2023. We present a spectrum of SN 2021hpr in Appendix B, which indicates it is a normal SN Ia.…”

Section: Datamentioning

confidence: 99%

Relative Intrinsic Scatter in Hierarchical Type Ia Supernova Sibling Analyses: Application to SNe 2021hpr, 1997bq, and 2008fv in NGC 3147

Ward,

Thorp,

Mandel

et al. 2023

ApJ

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We present Young Supernova Experiment grizy photometry of SN 2021hpr, the third Type Ia supernova sibling to explode in the Cepheid calibrator galaxy, NGC 3147. Siblings are useful for improving SN-host distance estimates and investigating their contributions toward the SN Ia intrinsic scatter (post-standardization residual scatter in distance estimates). We thus develop a principled Bayesian framework for analyzing SN Ia siblings. At its core is the cosmology-independent relative intrinsic scatter parameter, σ Rel: the dispersion of siblings distance estimates relative to one another within a galaxy. It quantifies the contribution toward the total intrinsic scatter, σ 0, from within-galaxy variations about the siblings’ common properties. It also affects the combined distance uncertainty. We present analytic formulae for computing a σ Rel posterior from individual siblings distances (estimated using any SN model). Applying a newly trained BayeSN model, we fit the light curves of each sibling in NGC 3147 individually, to yield consistent distance estimates. However, the wide σ Rel posterior means σ Rel ≈ σ 0 is not ruled out. We thus combine the distances by marginalizing over σ Rel with an informative prior: σ Rel ∼ U(0, σ 0). Simultaneously fitting the trio’s light curves improves constraints on distance and each sibling’s individual dust parameters, compared to individual fits. Higher correlation also tightens dust parameter constraints. Therefore, σ Rel marginalization yields robust estimates of siblings distances for cosmology, as well as dust parameters for sibling–host correlation studies. Incorporating NGC 3147's Cepheid distance yields H 0 = 78.4 ± 6.5 km s−1 Mpc−1. Our work motivates analyses of homogeneous siblings samples, to constrain σ Rel and its SN-model dependence.

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YSE-PZ: A Transient Survey Management Platform that Empowers the Human-in-the-loop

Cited by 17 publications

References 111 publications

SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova

SN 2023ixf in Messier 101: Photo-ionization of Dense, Close-in Circumstellar Material in a Nearby Type II Supernova

A Data Science Platform to Enable Time-domain Astronomy

Relative Intrinsic Scatter in Hierarchical Type Ia Supernova Sibling Analyses: Application to SNe 2021hpr, 1997bq, and 2008fv in NGC 3147

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