Table 3: Log of HST/STIS observations. All the data have been obtained with the E140H grating.
Target Dataset Exp. time (ks) Range (Å) Aperture

HD 24534 O66P01020 8.8 1242-1444 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

O66P02010 2.0 1425-1627 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

HD 93222 O4QX02010 1.7 1140-1335 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

O4QX02020 1.1 1315-1517 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

O4QX02030 2.5 1497-1699 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

HD 99857 O54301010 1.3 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$

O6LZ44010 1.2 1388-1590 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }2$

HD 104705 O57R01010 2.4 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

O57R01030 2.9 1388-1590 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

HD 121968 O57R02010 1.6 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

O57R02020 2.9 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

O57R02030 8.4 1352-1554 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

HD 124314 O54307010 1.5 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$

O54307030 1.5 1388-1590 $0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$

HD 177989 O57R03020 2.9 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

O57R04020 8.7 1388-1590 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

HD 202347 O5G301010 0.8 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$

O5G301040 0.9 1388-1590 $0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$

HD 218915 O57R05010 2.0 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$

O57R05030 1.3 1388-1590 $0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$

HD 224151 O54308010 1.5 1170-1372 $0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$

O6LZ96010 0.3 1388-1590 $0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }2$

**Table 3:** Log of HST/*STIS* observations. All the data have been obtained with the E140H grating.
Target	Dataset	Exp. time (ks)	Range (Å)	Aperture
HD 24534	O66P01020	8.8	1242-1444	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
	O66P02010	2.0	1425-1627	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
HD 93222	O4QX02010	1.7	1140-1335	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
	O4QX02020	1.1	1315-1517	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
	O4QX02030	2.5	1497-1699	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
HD 99857	O54301010	1.3	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$
	O6LZ44010	1.2	1388-1590	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }2$
HD 104705	O57R01010	2.4	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
	O57R01030	2.9	1388-1590	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
HD 121968	O57R02010	1.6	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
	O57R02020	2.9	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
	O57R02030	8.4	1352-1554	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
HD 124314	O54307010	1.5	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$
	O54307030	1.5	1388-1590	$0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$
HD 177989	O57R03020	2.9	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
	O57R04020	8.7	1388-1590	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
HD 202347	O5G301010	0.8	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$
	O5G301040	0.9	1388-1590	$0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$
HD 218915	O57R05010	2.0	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }09$
	O57R05030	1.3	1388-1590	$0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$
HD 224151	O54308010	1.5	1170-1372	$0\hbox{$.\!\!^{\prime\prime}$ }1\times0\hbox{$.\!\!^{\prime\prime}$ }03$
	O6LZ96010	0.3	1388-1590	$0\hbox{$.\!\!^{\prime\prime}$ }2\times0\hbox{$.\!\!^{\prime\prime}$ }2$

Source LaTeX | All tables | In the text

	1 Introduction
	2 Observations
	3 Data analysis
	4 Results
	5 Conclusions
	References