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J/MNRAS/372/163    Activity indices for southern stars      (Jenkins+, 2006)

An activity catalogue of southern stars. Jenkins J.S., Jones H.R.A., Tinney C.G., Butler R.P., McCarthy C., Marcy G.W., Pinfield D.J., Carter B.D., Penny A.J. <Mon. Not. R. Astron. Soc., 372, 163-173 (2006)> =2006MNRAS.372..163J
ADC_Keywords: Stars, nearby ; Stars, atmospheres ; Stars, dwarfs Keywords: stars: activity - stars: low-mass, brown dwarfs - planetary systems - ultraviolet: stars Abstract: We have acquired high-resolution echelle spectra of 225 F6-M5 type stars in the Southern hemisphere. The stars are targets or candidates to be targets for the Anglo-Australian Planet Search. CaII H&K line cores were used to derive activity indices for all of these objects. The indices were converted to the Mt. Wilson system of measurements and logR'HK values determined. A number of these stars had no previously derived activity indices. In addition, we have also included the stars from Tinney et al. (2002MNRAS.332..759T) using our Mt. Wilson calibration. The radial-velocity instability (also known as jitter) level was determined for all 21 planet-host stars in our data set. We find the jitter to be at a level considerably below the radial-velocity signatures in all but one of these systems. 19 stars from our sample were found to be active (logR'HK>-4.5) and thus have high levels of jitter. Radial-velocity analysis for planetary companions to these stars should proceed with caution. Description: Six nights of observations were taken over a period of 4yr. The observations were made using the University College London Echelle Spectrograph mounted on the 3.9-m Anglo-Australian Telescope (AAT). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 67 266 SAAT and logR'(HK,AAT) for stars on or under consideration for the AAPS
See also: V/76 : Chromospherically Active Binaries (Strassmeier+ 1993) J/A+A/312/221 : Excess CaII H+K emission in active binaries (Montes+, 1996) J/AJ/111/439 : Chromospheric emission in late-type stars. (Henry+ 1996) J/ApJS/152/261 : Chromospheric Ca II emission in nearby stars (Wright+, 2004) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 10 A10 "YYYY/MM/DD" Date Observation date 11 A1 --- --- [-] 12- 13 I2 --- n_Date ? Second day of observation 15 A1 --- n_Star [*] *: highlight planet bearing stars 16- 24 A9 --- Star Star name (GL or HD) 25 A1 --- m_Star [AB] Multiplicity index on Star 26- 31 F6.3 mag B-V Johnson B-V colour index (from HIP) 33- 37 F5.2 mag Vmag Johnson V magnitude (from HIP) 39- 47 A9 --- SpType MK spectral type 50- 55 F6.3 --- SAAT AAT activity index after calibration on to the MW system of measurements (1) 57- 61 F5.3 --- e_SAAT rms uncertainty on SAAT (2) 63- 67 F5.2 --- logR'HK AAT final activity index derived from the Ca II H+K lines (3)
Note (1): For objects with multiple measurements, we have included all the individual indices. Note (2): The photon-counting errors are indicative only, a random error of >3% must be taken into account in all instances. This error was estimated from measurements of tau Ceti Note (3): Final activity values generated following the Noyes et al. (1984ApJ...279..763N) methodology.
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 29-May-2007
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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