J/A+A/683/A161 Solar-like stars global oscillation properties (Corsaro+, 2024)
A new catalog of magnetically active solar-like oscillators.
Corsaro E., Bonanno A., Kayhan C., Di Mauro M.P., Reda R., Giovannelli L.
<Astron. Astrophys. 683, A161 (2024)>
=2024A&A...683A.161C 2024A&A...683A.161C (SIMBAD/NED BibCode)
ADC_Keywords: Stars, dwarfs ; Stars, variable ; Magnetic fields ;
Asteroseismology ; Optical
Keywords: asteroseismology - methods: statistical - stars: activity -
stars: late-type - stars: solar-type
Abstract:
We present a new catalog of stars for which detected solar-like
oscillations and magnetic activity measurements from chromospheric
spectroscopic observations are both available. Our results were
obtained by exploiting NASA TESS mission light curves for active stars
observed within the Mount Wilson Observatory HK project and the HK
survey of the Hamburg Robotic Telescope TIGRE. We analyzed the light
curves for a total of 191 stars by adopting recent techniques based on
Bayesian analysis and model comparison to assess the detection of a
power excess originating from solar-like oscillations. We
characterized the oscillations in a total of 34 targets, for which we
provide estimates for the global asteroseismic parameters of νmax
(the frequency of maximum oscillation power), {DELTA}ν (the large
frequency separation), and for the amplitude of the solar-like
oscillation envelope Amax. We provide strong statistical evidence for
the detection of solar-like oscillations in 15 stars of our sample,
identify six further stars where a detection is likely, and 13 stars
for which oscillations cannot be ruled out. The key parameters
extracted in this work will be exploited for a detailed stellar
modeling of the targets and to calibrate relations that connect the
level of the measured magnetic activity to the suppression induced on
the global oscillation amplitudes. This opens the possibility of
shedding light on the interplay between magnetic fields and
oscillations. Because of their relatively high brightness, the targets
may also be of interest for future dedicated follow-up observations
using both photometry and spectropolarimetry.
Description:
Global asteroseismic properties and detection significance for
solar-like oscillations in a sample of magnetically active stars
observed with NASA TESS.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 15 Stars with firm detection
table2.dat 76 19 Stars with likely or possible detection
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See also:
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- HD HD catalog identifier
9- 17 I9 --- TIC TESS Input Catalog identifier
19- 36 A18 --- Catalog Magnetic activity catalog
38- 41 I4 uHz numax Frequency of max. oscillation power
43- 45 I3 uHz E_numax Lower uncertainty on numax
47- 49 I3 uHz e_numax Upper uncertainty on numax
51- 56 F6.2 uHz DeltaNu Large frequency separation
58- 61 F4.2 uHz e_DeltaNu Uncertainty on DeltaNu
63- 66 F4.1 ppm Amax Maximum global oscillation amplitude
68- 70 F3.1 ppm e_Amax Uncertainty on A_max
72- 76 F5.2 --- lnBayesFactor Bayes' factor for detection
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History:
From Enrico Corsaro, enrico.corsaro(at)inaf.it
Acknowledgements:
This work received support from PLATO ASI-INAF agreement no.
2022-28-HH.0 "PLATO Fase D" and from the research grant "Unveiling the
magnetic side of the Stars" (PI A. Bonanno) funded under the INAF
national call for Fundamental Research 2023.
(End) Patricia Vannier [CDS] 26-Jan-2024