Table · dataset · 2022
SN 2019zrk photometry and spectroscopy
Listed in IVOA Registry (Virtual Observatory)
We present photometric and spectroscopic observations of the Type IIn supernova SN 2019zrk (a.k.a.
Description
ZTF 20aacbyec). The SN shows a >~100 day precursor, with a slow rise, followed by a rapid rise to M~-19.2 in the r and g bands.
The post-peak light-curve decline is well fitted with an exponential decay with a time scale of ~39 days, but shows prominent undulations, with an amplitude of ~1mag. Both the light curve and spectra are dominated by interaction with a dense circumstellar medium (CSM), probably from previous mass ejections. The spectra evolves from a scattering-dominated Type IIn spectrum to a spectrum with strong P-Cygni absorptions.
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The expansion velocity is high, ~16000km/s, even in the last spectra. The last spectrum ~110 days after the main eruption reveals no evidence for advanced nucleosynthesis. From analysis of the spectra and light curves we estimate the mass-loss rate to be ~4x10^-2^M_{sun}_/yr for a CSM velocity of 100km/s, and a CSM mass of >~1M_{sun}_.
We find strong similarities of both the precursor, general light curve and spectral evolution with SN 2009ip and similar SNe, although SN 2019zrk displays a brighter peak magnitude. Different scenarios for the nature of the 09ip-class of SNe, based on pulsational pair instability eruptions, wave heating and mergers, are discussed.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/666/A79 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2022A&A...666A..79F ui.adsabs.harvard.edu/abs/2022A%26A...666A..79F ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/666/a79 ↗
catalogue entry · from IVOA Registry
Topics
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/666/a79 | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:infrared | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |