Table · dataset · 2023
Spectroscopic obs. of type Ibn ASASSN-14ms
Listed in IVOA Registry (Virtual Observatory)
ASASSN-14ms may represent the most luminous Type Ibn supernova (SNIbn) ever detected, with an absolute U-band magnitude brighter than -22.0mag and a total bolometric luminosity >1.0x10^44^erg/s near maximum light.
Description
The early-time spectra of this SN are characterized by a blue continuum on which are superimposed narrow P Cygni profile lines of HeI, suggesting the presence of slowly moving (~1000km/s), He-rich circumstellar material (CSM).
At 1-2 months after maximum brightness, the HeI line profiles become only slightly broader, with blueshifted velocities of 2000-3000km/s, consistent with the CSM shell being continuously accelerated by the SN light and ejecta. Like most SNe Ibn, the light curves of ASASSN-14ms show rapid post-peak evolution, dropping by ~7mag in the V band over three months. Such a rapid post-peak decline and high luminosity can be explained by interaction between SN ejecta and helium-rich CSM of 0.9M_{sun}_ at a distance of ~10^15^cm.
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The CSM around ASASSN-14ms is estimated to originate from a pre-explosion event with a mass-loss rate of 6.7M_{sun}_/yr (assuming a velocity of ~1000km/s), which is consistent with abundant He-rich material violently ejected during the late Wolf-Rayet (WN9-11 or Opfe) stage. After examining the light curves for a sample of SNe Ibn, we find that the more luminous ones tend to have slower post-peak decline rates, reflecting that the observed differences may arise primarily from discrepancies in the CSM distribution around the massive progenitors.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/917/97 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2021ApJ...917...97W ui.adsabs.harvard.edu/abs/2021ApJ...917...97W ↗
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/apj/917/97 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/917/97 | 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: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 |