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J/MNRAS/463/1297   Asteroseismology of 1523 misclassified red giants (Yu+, 2016)

Asteroseismology of 1523 misclassified red giants using Kepler data. Yu J., Huber D., Bedding T.R., Stello D., Murphy S.J., Xiang M., Bi S., Li T. <Mon. Not. R. Astron. Soc., 463, 1297-1306 (2016)> =2016MNRAS.463.1297Y (SIMBAD/NED BibCode)
ADC_Keywords: Asteroseismology ; Stars, giant Keywords: techniques: photometric - stars: oscillations Abstract: We analysed solar-like oscillations in 1523 Kepler red giants which have previously been misclassified as subgiants, with predicted νmax values [based on the Kepler Input Catalogue (KIC)] between 280 and 700µHz. We report the discovery of 626 new oscillating red giants in our sample, in addition to 897 oscillators that were previously characterized by Hekker et al. from one quarter of Kepler data. Our sample increases the known number of oscillating low-luminosity red giants by 26 per cent (up to ≥1900 stars). About three quarters of our sample are classified as ascending red giant branch stars, while the remainder are red-clump stars. A novel scheme was applied to determine Δν for 108 stars with νmax close to the Nyquist frequency (387µHz>νmax>387µHz). Additionally, we identified 47 stars oscillating in the super-Nyquist frequency regime, up to 387 µHz, using long-cadence light curves. We show that the misclassifications are most likely due to large uncertainties in KIC surface gravities, and do not result from the absence of broad-band colours or from different physical properties such as reddening, spatial distribution, mass or metallicity. The sample will be valuable to study oscillations in low-luminosity red giants and to characterize planet candidates around those stars. Description: We selected 4758 stars with KIC predicted νmax ranging from close to the Nyquist frequency (280uHz) to 700uHz. Based on the SYD pipeline applied to the long-cadence light curves observed by Kepler , we detected unambiguous oscillations in 1523 red giants and reported the discovery of 626 new oscillating red giants. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 58 1523 Global oscillation parameters: νmax, Δν and amplitude
See also: V/133 : Kepler Input Catalog (Kepler Mission Team, 2009) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
3- 10 I8 --- KIC KIC number 14- 18 F5.1 uHz numax ?=- Maximum frequency 23- 26 F4.1 uHz e_numax ?=- rms uncertainty on numax 30- 34 F5.2 uHz dnu ?=- Mean large frequency separation 39- 42 F4.2 uHz e_dnu ?=- rms uncertainty on dnu 46- 50 F5.1 ppm Amp ?=- Amplitude per radial mode 55- 58 F4.1 ppm e_Amp ?=- rms uncertainty on Amp
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 03-May-2018
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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