Table · dataset · 2022
Spectroscopic activity indicators of TIC stars
Listed in IVOA Registry (Virtual Observatory)
Description
We present a study of flare rates, rotation periods, and spectroscopic activity indicators of 125 single stars within 15 parsecs and with masses between 0.1 and 0.3M_{sun}_ observed during the first year of the TESS mission, with the goal of elucidating the relationship between these various magnetically connected phenomena. We gathered multiepoch high-resolution spectra of each target, and we measured equivalent widths of the activity indicators helium I D3, H{alpha}, and the calcium infrared triplet line at 8542.09{AA}.
We present 18 new rotation periods from MEarth photometry and 19 new rotation periods from TESS photometry. We present a catalog of 1392 flares. After correcting for sensitivity, we find the slope of the flare frequency distribution for all stars to have a standard value of {alpha}=1.98+/-0.02.
Read the rest (2 more)
We determine R_31.5_, the rate of flares per day with energies above E=3.16x10^31^ergs in the TESS bandpass. We find that below a critical value of H{alpha}EW=-0.71{AA}, logR_31.5_ increases linearly with increasing H{alpha} emission; above this value, logR_31.5_ declines rapidly. The stars divide into two groups: 26% have H{alpha} in emission, high flare rates with typical values of logR_31.5_=-1.30+/-0.08, and have Rossby numbers <0.50.
The remaining 74% show little to no H{alpha} in emission and exhibit logR_31.5_{<}-3.86, with the majority of these stars not showing a single flare during the TESS observations.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/905/107 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2020ApJ...905..107M ui.adsabs.harvard.edu/abs/2020ApJ...905..107M ↗
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/905/107 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Stellar astronomy and planetary systems 77%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/905/107 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:field:510109 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (77%) |
| 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 |