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J/AJ/138/312        Activity of bright solar analogs         (Hall+, 2009)

The activity and variability of the Sun and Sun-like stars. II. Contemporaneous photometry and spectroscopy of bright solar analogs. Hall J.C., Henry G.W., Lockwood G.W., Skiff B.A., Saar S.H. <Astron. J., 138, 312-322 (2009)> =2009AJ....138..312H
ADC_Keywords: Sun ; Stars, G-type ; Photometry Keywords: stars: activity - Sun: activity Abstract: We present 14 years of contemporaneous photometric and spectroscopic observations of 28 solar analog stars, taken with the Tennessee State University Automatic Photometric Telescopes at Fairborn Observatory and the Solar-Stellar Spectrograph at Lowell Observatory. These are the best observed and most nearly Sun-like of the targets in our magnitude-limited (V≤7.5) sample. The correlations between luminosity and activity reveal the expected inverse activity-brightness correlations for active stars. Strong direct correlations between activity and brightness are not prevalent for the less active solar age stars, but are precision limited. Description: The HK series presented in this paper result from a reprocessing of our ∼30000 solar and stellar spectra following a seven month observing hiatus from 2008 January-July. We acquired the photometric observations in this paper with the T4 0.75-m and the T8 0.8-m APTs at Fairborn Observatory. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 39 28 Target Stars and their Properties table3.dat 65 284 Seasonal means
See also: J/A+A/468/663 : Li abundances in solar-analog stars (Takeda+, 2007) J/A+A/508/L17 : Abundances in solar analogs (Ramirez+, 2009) J/ApJS/181/62 : Survey of young solar analogs (Metchev+, 2009) J/A+A/515/A93 : Li abundances in solar-analog stars. II. (Takeda+, 2010) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD Star HD number 8- 9 I2 --- Nseas Number of seasons 11- 14 F4.2 mag Vmag V magnitude (1) 15 A1 --- r_Vmag [bcd] Reference for Vmag (2) 17- 21 F5.3 mag b-y b-y colour index (1) 22 A1 --- r_b-y [e] Reference for b-y (2) 24- 30 A7 --- SpType MK spectral type 32- 36 F5.2 [-] [M/H] Metallicity (1) 38- 39 A2 --- Prog [ELM ] Programs (3)
Note (1): Except where noted, * V magnitudes are from Johnson et al. (1966CoLPL...4...99J), and * b-y colors are from Olsen (1993, Cat. J/A+AS/102/89, 1994, Cat. J/A+AS/104/429). * Metal abundances are taken from Valenti & Fischer (2005, Cat. J/ApJS/159/141) and Gray et al. (2003, Cat. J/AJ/126/2048). Note (2): Notes as follows: b = Carney (1978AJ.....83.1087C) c = Mermilliod (1986EgUBV........0M) d = Bidelman (1951ApJ...113..304B) e = Crawford et al. (1966AJ.....71..709C) Note (3): Programs as follows: E = ELODIE (Soubiran & Triaud, 2004A&A...418.1089S) M = Mt. Wilson (Baliunas et al., 1995ApJ...438..269B) L = Lockwood et al. (2007ApJS..171..260L)
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD Star HD number 8- 13 F6.1 yr Season [1994/2008.4] Midpoint of photometric/HK observing season 15- 19 F5.3 --- <S> Seasonal mean Mount Wilson S index 21- 26 F6.3 [-] <logR'HK> Seasonal mean R'HK activity index 28- 37 E10.3 mW/m2 DFHK Seasonal mean excess flux in erg/s/cm2 39- 48 E10.3 mW/m2 e_DFHK The 1σ error in DFHK 50- 57 F8.5 mag (b+y)/2 Photometric brightness (1) 59- 65 F7.5 mag e_(b+y)/2 The 1σ error in (b+y)/2
Note (1): Relative to grand mean of all observations.
History: From electronic version of the journal References: Hall et al., Paper I 2007AJ....133..862H
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 16-Nov-2011
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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