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Table 5

Atmospheric parameters inferred for our FORS2 spectroscopic sample of 47 EHB stars with clean or slightly polluted spectra.

Teff (K) log g log (He/H) Ref. B ACS/WFI RACS/VWFI Phot. Det. (%)
177614 56 404 ± 722 6.184 ± 0.070 −1.476 ± 0.085 ACS 18.443 ± 0.011 18.699 ± 0.012 efosc4 0.46
281063 53 393 ± 1190 6.102 ± 0.092 −1.655 ± 0.134 ACS 18.506 ± 0.013 18.719 ± 0.013 ucam 0.31 V5
154681 51 990 ± 745 5.828 ± 0.073 −1.242 ± 0.051 WFI 18.205 ± 0.003 18.415 ± 0.003 efosc5 0.73 V4
172409∗ 50 862 ± 1127 5.643 ± 0.065 −2.390 ± 0.136 ACS 18.151 ± 0.015 18.456 ± 0.016 efosc9 1.08
260664∗ 49 858 ± 863 5.542 ± 0.054 −1.841 ± 0.073 ACS 18.438 ± 0.012 18.638 ± 0.011 ucam 0.36 V2
177238 49 277 ± 886 6.014 ± 0.069 −1.719 ± 0.100 ACS 18.300 ± 0.012 18.583 ± 0.016 efosc4 0.77 V3
5034421 48 500 ± 622 5.798 ± 0.046 −1.819 ± 0.060 ACS 18.299 ± 0.013 18.547 ± 0.012 ucam 0.25 V1
248955∗ 48 209 ± 1009 5.445 ± 0.083 −1.330 ± 0.082 ACS 18.014 ± 0.014 18.192 ± 0.013 ucam 0.38 SV
5128088∗ 47 748 ± 893 5.993 ± 0.093 −1.197 ± 0.077 WFI 18.816 ± 0.003 18.985 ± 0.003 ucam 0.53 135227∗∗
5143191∗ 47 552 ± 984 5.475 ± 0.082 −1.388 ± 0.081 ACS 18.137 ± 0.021 18.339 ± 0.043 ucam 0.63
5067230∗ 45 351 ± 688 5.740 ± 0.107 −0.539 ± 0.074 ACS 18.692 ± 0.010 18.892 ± 0.011 ucam 1.29
165237 44 456 ± 377 6.178 ± 0.110 1.017 ± 0.158 ACS 18.335 ± 0.011 18.546 ± 0.011 no
5242616 43 601 ± 626 5.862 ± 0.076 −1.502 ± 0.074 WFI 18.427 ± 0.004 18.551 ± 0.005 no
5039935 39 815 ± 464 6.085 ± 0.107 0.556 ± 0.076 ACS 19.160 ± 0.023 19.314 ± 0.019 ucam 0.65
5138707 39 359 ± 381 6.110 ± 0.089 0.617 ± 0.059 ACS 19.094 ± 0.013 19.293 ± 0.014 no
5085696 38 757 ± 364 5.711 ± 0.084 −0.102 ± 0.053 WFI 18.747 ± 0.003 18.744 ± 0.004 no
5047695 38 724 ± 545 5.819 ± 0.119 −0.237 ± 0.077 ACS 18.968 ± 0.032 19.122 ± 0.026 ucam 0.37
5124244 38 248 ± 506 6.011 ± 0.094 −0.041 ± 0.056 WFI 18.892 ± 0.004 19.033 ± 0.004 ucam 0.43
5170422 38 183 ± 321 5.775 ± 0.061 −0.773 ± 0.044 WFI 18.352 ± 0.003 18.454 ± 0.004 ucam 0.31
177711 36 984 ± 422 5.783 ± 0.073 −0.530 ± 0.052 ACS 18.591 ± 0.014 18.796 ± 0.014 efosc4 0.48
264057 36 645 ± 392 5.833 ± 0.069 −0.885 ± 0.053 ACS 18.583 ± 0.016 18.777 ± 0.013 ucam 0.58
5059328∗ 36 506 ± 544 5.647 ± 0.099 −0.654 ± 0.072 ACS 18.874 ± 0.024 19.075 ± 0.019 ucam 1.3
5142638 36 481 ± 401 5.791 ± 0.067 −0.477 ± 0.047 WFI 18.811 ± 0.003 18.919 ± 0.003 efosc7 3.92
5220684 36 442 ± 332 5.932 ± 0.057 −0.909 ± 0.044 ACS 18.500 ± 0.014 18.727 ± 0.013 efosc4 0.69
5062474 36 438 ± 888 5.904 ± 0.139 −0.116 ± 0.085 ACS 18.919 ± 0.021 18.938 ± 0.040 ucam 1.2
5102280 36 395 ± 317 5.717 ± 0.056 −0.949 ± 0.043 WFI 18.357 ± 0.002 18.441 ± 0.003 no
165943 36 261 ± 344 5.847 ± 0.060 −0.745 ± 0.043 ACS 18.513 ± 0.015 18.764 ± 0.015 no
274052 36 191 ± 486 5.656 ± 0.083 −0.389 ± 0.058 ACS 18.720 ± 0.014 18.883 ± 0.013 ucam 0.36
5242504 36 072 ± 379 5.807 ± 0.066 −0.532 ± 0.048 WFI 18.657 ± 0.003 18.824 ± 0.004 no
5164025 36 036 ± 391 5.890 ± 0.070 −0.646 ± 0.050 WFI 18.878 ± 0.003 19.037 ± 0.004 ucam 0.36
5165122 35 876 ± 321 5.783 ± 0.056 −0.719 ± 0.041 WFI 18.601 ± 0.003 18.775 ± 0.003 ucam 0.32
5205350 35 837 ± 328 5.539 ± 0.056 −0.699 ± 0.043 WFI 18.462 ± 0.003 18.616 ± 0.003 no
5141232 35 804 ± 356 5.686 ± 0.065 −0.677 ± 0.046 WFI 18.578 ± 0.003 18.739 ± 0.003 ucam 0.35
75981 35 122 ± 288 5.789 ± 0.049 −1.107 ± 0.041 WFI 18.313 ± 0.003 18.513 ± 0.003 no 75981∗∗
53945 34 860 ± 333 5.959 ± 0.056 −0.711 ± 0.040 WFI 18.724 ± 0.003 18.906 ± 0.003 efosc2 0.71 53945∗∗
5119720 34 775 ± 394 5.836 ± 0.066 −0.861 ± 0.050 ACS 18.619 ± 0.013 18.778 ± 0.013 ucam 0.33
5222459 34 668 ± 290 5.793 ± 0.048 −0.722 ± 0.036 WFI 18.825 ± 0.003 18.952 ± 0.003 efosc2 0.81
5180753 34 140 ± 283 5.783 ± 0.049 −1.490 ± 0.051 ACS 18.400 ± 0.012 18.599 ± 0.016 efosc9 1.18
5142999 33 843 ± 380 5.641 ± 0.061 −1.155 ± 0.056 WFI 18.549 ± 0.003 18.735 ± 0.003 ucam 0.27 164808∗∗
5243164 31 614 ± 245 5.408 ± 0.040 −2.656 ± 0.134 WFI 18.206 ± 0.003 18.359 ± 0.004 no 75993∗∗
168035 31 458 ± 431 5.626 ± 0.070 −3.614 ± 0.557 ACS 17.929 ± 0.010 18.084 ± 0.011 no
5185548∗ 31 191 ± 338 5.546 ± 0.056 −4.365 ± 1.064 WFI 18.116 ± 0.002 18.251 ± 0.002 ucam 0.24
5262593 30 762 ± 255 5.497 ± 0.042 −3.393 ± 0.417 WFI 17.810 ± 0.002 17.938 ± 0.002 no
175411∗ 29 213 ± 293 5.454 ± 0.047 −3.176 ± 0.292 ACS 18.698 ± 0.016 18.713 ± 0.031 efosc9 1.62
204071 28 761 ± 657 5.570 ± 0.095 −3.074 ± 0.186 ACS 17.929 ± 0.021 18.100 ± 0.014 no
5139614 27 894 ± 379 5.521 ± 0.058 −3.758 ± 1.185 ACS 18.823 ± 0.012 18.934 ± 0.010 ucam 0.63
5238307 27 108 ± 261 5.512 ± 0.039 −2.287 ± 0.073 ACS 18.590 ± 0.013 18.673 ± 0.018 no

Notes. Also listed are the ACS/WFI B and R/V magnitudes. For the targets that overlap with our time-series photometry sample, the detection limit above which pulsations would have been detected is given. The rapid variables V1-V5 are indicated, as is the slow variable (SV).

(∗)

Spectrum polluted by cooler star. The estimate of log g should be seen as a lower limit only.

(∗∗)

ID from Moehler et al. (2011).

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