Please cite as: Lubin, Dan; Holden, Bradford P.; Stock, Camille; Melis, Carl; Tytler, David. (2023). Observations of Solar Analog Field Stars from the Hamilton Echelle Spectrograph at Lick Observatory. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0X34XN2 Corresponding author: Dan Lubin, dlubin@ucsd.edu Primary associated publication: [TBN] Description of contents: This observing program used the Hamilton Echelle Spectrograph on the three meter Shane telescope at Lick Observatory to obtain high resolution spectroscopic observations of 211 solar analog field stars. Observations were made over 22 nights between February 2013 and January 2014. Our criteria for selecting solar analogs include: (1) effective temperature within ±500 K of solar; (2) -0.3 < [Fe/H] < +0.3; (3) absolute magnitude within ±0.5 of the Hipparcos main sequence (Wright 2004). Effective temperatures were taken from the third version of the Geneva-Copenhagen survey (Holmberg et al. 2009), with temperature, metallicity and isochrone age estimates refined by Casagrande et al. (2011). An additional selection criterion is that a star have no indication in the SIMBAD Astronomical Database of being part of a double or multiple system, or being a chromospherically active variable such as type RS CVn or BY Dra (note that SIMBAD entries are periodically updated and users should recheck this criterion). Table 1 lists the program stars. Each ascii text file in this collection contains one spectrum, with the star's Hipparcos catalog identifier (HIP) as the filename. The columns in each file are, left to right: (1) Hamilton Echelle Spectrograph order number (integer); (2) Wavelength (Ångstroms); (3) Flux (machine units); (4) Variance (such that the signal-to-noise ratio and be estimated as the Flux divided by the square root of the Variance). Information about the Hamilton Echelle Spectrograph, including the table of orders, can be found at https://mthamilton.ucolick.org/techdocs/instruments/hamspec/index.html/ Methods: To reduce the observations, we used the Hamilton spectrometer pipeline that is part of the {\em XIDL} package (https://github.com/profxj/xidl). The software requires both the science data and a number of calibration frames. The calibration frames include arc lamp spectra, flat field images that trace the orders, and "pixel flats." Specific details of the pipeline's application to this dataset can be obtained from the corresponding author. References: Casagrande, L., et al. 2011, A&A, A138 Holmberg, J., Nordström, B., & Andersen, J. 2009, A&A, 501, 941 Wright, J. T. 2004, AJ, 128, 1273 Table 1: Observational results for the 211 program stars, listed by their HIP identifier. The observation date is given in the format YYMMDD. The star's expectation age is taken from Casagrande et al. (2011), in which one also finds the metallicity and effective temperature used for program star selection. HIP Date Age (Gyr) 996 131222 3.57 1444 131211 6.46 1499 131210 4.90 3311 130815 4.08 3979 131111 3.99 4103 131223 3.76 4393 140101 3.06 4423 131210 2.06 5176 131211 3.17 5335 130815 7.29 6285 140101 2.75 6309 140107 2.73 6405 140107 5.16 7244 131024 5.30 7585 130815 4.35 7733 131223 6.08 7734 131223 5.47 7902 140101 7.18 9829 131223 3.79 10510 131024 6.09 10626 131211 5.92 11728 131222 3.09 11949 131231 5.50 12067 140101 5.15 13291 140107 7.60 14300 131223 4.17 14614 131231 5.23 14922 131024 3.00 16405 131222 6.40 18261 131231 3.69 19016 131211 2.95 19024 131223 6.49 19148 131231 2.84 19301 131024 4.08 19781 131223 4.35 19925 131210 2.95 20722 140101 3.57 21436 131222 3.58 21571 140101 3.90 21654 131024 2.73 22175 131231 3.68 23259 130301 5.08 23384 131222 6.06 23443 140107 5.11 23884 131024 4.61 24336 131231 8.55 25414 140101 6.09 25586 131211 8.35 25905 131223 4.61 26037 130301 3.79 26807 140107 6.21 26974 140101 4.79 27161 130227 4.30 27980 131231 3.63 29074 131222 1.24 29248 131024 4.54 29432 130228 2.98 29777 140101 5.44 30243 130227 4.36 30486 130301 3.69 30890 131231 7.90 31965 140101 3.37 32382 130228 5.77 32673 130301 5.14 32874 130420 4.63 32971 131231 7.82 33212 131222 2.36 33580 140101 4.08 33608 131223 2.31 34017 130420 4.68 34271 131222 4.57 34511 130227 5.77 35185 131231 2.69 35209 130228 4.19 35265 130420 3.58 36249 131024 7.14 36874 130227 9.12 37061 140101 6.63 37170 130301 3.04 38392 130228 4.73 38647 130227 2.48 38730 131223 1.53 38853 131222 4.75 40133 130301 4.85 40452 131211 7.30 40765 131210 3.37 41484 130227 5.13 41526 140101 3.57 41844 130301 5.79 42074 131223 5.61 42356 130420 3.03 42408 131231 4.44 42575 140101 4.69 43297 131222 4.09 43726 130421 4.27 43852 130420 5.32 43861 130421 10.06 44089 130420 10.06 44097 130301 3.49 44324 130228 6.64 44341 131210 6.03 44890 131223 3.10 44897 140108 2.28 44997 131211 5.44 45859 130423 4.21 46023 130420 4.31 46076 130228 4.05 47110 130301 5.83 47312 130227 7.86 48025 131231 3.98 48423 130420 3.94 48524 131222 2.90 48754 131210 5.49 48887 140101 4.04 49080 131222 1.94 49350 131223 5.74 49580 130301 4.31 49623 130421 3.43 49674 131231 2.43 49756 130228 3.57 50473 131211 4.70 50505 130227 5.19 50606 130423 5.87 50742 130420 9.20 50782 130421 5.30 51128 130301 4.02 51550 130422 2.76 52369 131211 3.49 52667 131223 3.66 52780 131210 3.37 53305 131211 2.11 53537 130227 4.14 53721 130228 6.24 53898 130422 5.40 54375 131223 2.22 54582 130228 8.75 54728 131231 5.51 55210 131222 5.06 55820 131222 5.41 55823 130421 4.33 56832 130228 4.03 57083 130301 4.83 58201 130228 2.18 58876 130425 3.14 59589 130420 6.86 59610 130421 4.49 60816 130421 2.20 62350 131231 3.09 62536 130422 9.31 63048 130228 9.09 64182 130421 1.77 64792 130227 4.35 65641 130227 4.99 66115 130228 2.38 68547 130420 3.71 69414 130421 6.04 69709 130301 4.58 70235 130420 4.20 70557 130421 5.39 71737 130227 1.67 71813 130228 7.79 72043 130420 5.55 73128 130421 2.35 73593 130227 4.05 74068 130228 4.54 76114 130301 5.30 76280 130705 7.81 76899 130420 9.17 77084 130423 5.10 77749 130227 3.25 79068 130421 3.73 79186 130420 6.63 79862 130421 3.36 82059 130705 7.04 85268 130423 7.66 85402 130705 2.59 85620 130423 1.92 85810 130421 4.92 87837 130815 3.10 88945 130421 2.64 89474 130423 7.91 90586 130424 2.12 91073 130815 3.28 93657 130815 2.13 95428 130705 4.74 96183 130815 4.28 96308 130815 5.88 96895 130705 6.24 96901 130705 5.27 100963 130705 4.44 102016 130815 2.95 102147 131024 1.77 102815 130705 2.79 104318 131024 4.59 106512 130815 3.76 107246 131024 1.78 108859 130705 3.27 110035 130705 6.12 112219 130815 3.98 112745 131223 2.81 112812 140101 2.36 113336 131024 1.72 113438 130815 4.42 113699 131231 4.76 114028 140107 5.48 114424 131223 2.51 115370 131231 3.32 115655 131222 2.60 117526 130815 6.45 117953 131024 5.88 118162 130815 5.45