Table · dataset · 2022
Lijiang/YFOSC light curves of NGC 2617
Listed in IVOA Registry (Virtual Observatory)
NGC 2617 attracted a lot of attention after the detection of changes in its spectral type; the geometry and kinematics of the broad-line region (BLR) are still ambiguous.
Description
In this paper, we present the high cadence (~2 days) reverberation mapping campaign of NGC 2617 from 2019-October to 2020-May undertaken at the Lijiang 2.4m telescope. For the first time, the velocity-resolved reverberation signature of the object was successfully detected.
Both H{alpha} and H{beta} show an asymmetrical profile with a peak in the velocity-resolved time lags. For both of the lines, the lag of the line core is longer than those of the relevant wings, and the peak of the velocity-resolved lags is slightly blueshifted. These characteristics are not consistent with the theoretical prediction of the inflow, outflow or Keplerian disk model.
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Our observations give the time lags of H{alpha}, H{beta}, H{gamma}, and HeI, with a ratio of {tau}_H{alpha}_:{tau}_H{beta}_: {tau}_H{gamma}_:{tau}_HeI_=1.27:1.00:0.89:0.20, which indicates a stratified structure in the BLR of the object. It is the first time that the lags of H{alpha} and HeI are obtained. Assuming a virial factor of f=5.5 for the dispersion width of the line, the masses of the black holes derived from H{alpha} and H{beta} are 23.8_-2.7_^+5.4^ and 21.1_-4.4_^+3.8^x10^6^M_{sun}_, respectively.
Our observed results indicate the complexity of the BLR of NGC 2617.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/912/92 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2021ApJ...912...92F ui.adsabs.harvard.edu/abs/2021ApJ...912...92F ↗
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/912/92 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 70%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/912/92 | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| 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 |