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J/ApJ/835/75    Common proper motion stars in the Kepler field    (Janes, 2017)

Rotation periods of wide binaries in the Kepler field. Janes K.A. <Astrophys. J., 835, 75-75 (2017)> =2017ApJ...835...75J (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Proper motions ; Photometry Keywords: binaries: visual; proper motions; stars: activity Abstract: In a search of proper motion catalogs for common proper motion stars in the field of the Kepler spacecraft I identified 93 likely binary systems. A comparison of their rotation periods is a test of the gyrochronology concept. To find their periods I calculated the autocorrelation function (ACF) of the Kepler mission photometry for each star. In most systems for which good periods can be found, the cooler star has a longer period than the hotter component, in general agreement with models. However, there is a wide range in the gradients of lines connecting binary pairs in a period-color diagram. Furthermore, near the solar color, only a few stars have longer periods than the Sun, suggesting that they, and their cooler companions, are not much older than the Sun. In addition, there is an apparent gap at intermediate periods in the period distribution of the late K and early M stars. Either star formation in this direction has been variable, or stars evolve in period at a non-uniform rate, or some stars evolve more rapidly than others at the same mass. Finally, using the ACF as a measure of the activity level, I found that while the F, G, and early K stars become less active as their periods increase, there is no correlation between period and activity for the mid K to early M stars. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 88 186 Selected common proper motion (CPM) stars in the Kepler field
See also: I/337 : Gaia DR1 (Gaia Collaboration, 2016) I/329 : URAT1 Catalog (Zacharias+ 2015) I/322 : UCAC4 Catalogue (Zacharias+, 2012) I/317 : The PPMXL Catalog (Roeser+ 2010) V/133 : Kepler Input Catalog (Kepler Mission Team, 2009) I/259 : The Tycho-2 Catalogue (Hog+ 2000) I/284 : The USNO-B1.0 Catalog (Monet+ 2003) J/ApJ/821/93 : Rotation + Galactic kinematics of mid M dwarfs (Newton+, 2016) J/MNRAS/455/4212 : Pan-STARRS 1: occurrence in the Kepler field (Dacon+, 2016) J/AJ/151/68 : Kepler Mission. VII. Eclipsing binaries in DR3 (Kirk+, 2016) J/ApJS/220/19 : LAMOST obs. in the Kepler field. I. (De Cat+, 2015) J/ApJ/780/159 : Old field stars rotation-mass-age relations (Epstein+, 2014) J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014) J/ApJS/211/2 : Revised properties of Q1-16 Kepler targets (Huber+, 2014) J/MNRAS/432/1203 : Rotation periods of M-dwarf stars (McQuillan+, 2013) J/ApJ/733/L9 : Stellar rotation for 71 NGC 6811 members (Meibom+, 2011) J/ApJ/728/117 : Kepler planetary candidates. I. (Borucki+, 2011) J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008) http://archive.stsci.edu/kepler/ : MAST Kepler archive Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Num [1/102] Running CPM Pair number 5- 12 I8 --- KIC Kepler Input Catalog number 14- 19 F6.1 mas/yr pmRA [-123.8/124.1] Proper motion in RA 21- 23 F3.1 mas/yr e_pmRA [0/6] Error in pmRA 25- 30 F6.1 mas/yr pmDE [-178.8/227.1] Proper motion in DE 32- 34 F3.1 mas/yr e_pmDE [0/6.4] Error in pmDE 36- 40 F5.1 arcsec Sep [6/577] Separation of components A and B 42- 43 I2 --- Irp [10/99] Relative common proper motion probability 45- 50 F6.3 mag gmag [7.9/19] The g band magnitude on the KIC system 52- 56 F5.3 mag g-Ks [0.6/6.2] The g-K color index 58- 62 F5.2 d Per [0/55.2] Rotation period 64- 68 F5.2 d e_Per [0/15] Uncertainty in Per 70- 76 F7.1 ppm Var [0/40360] Amplitude of correlated variability (V) 78- 83 F6.1 ppm e_Var [0.3/4744] Uncertainty in Var 85- 86 I2 --- NQ [1/18] Number of Kepler quarters 88 A1 --- Type Autocorrelation function type (1)
Note (1): Autocorrelation function type as follows: P = Periodic (78 occurrences); A = Alternating peaks (47 occurrences); T = Triple-peak pattern (19 occurrences); C = Complex pattern (11 occurrences); I = Indeterminate (31 occurrences).
History: From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 10-Aug-2017
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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