Free Access

This article has an erratum: [https://doi.org/10.1051/0004-6361/201935684e]


%PDF-1.6 % 7 0 obj <> endobj xref 7 12 0000000016 00000 n 0000000700 00000 n 0000000775 00000 n 0000000896 00000 n 0000001112 00000 n 0000001241 00000 n 0000001364 00000 n 0000005545 00000 n 0000005926 00000 n 0000006286 00000 n 0000006328 00000 n 0000000536 00000 n trailer <<9C224597839E664F8BFB9EE7CA08D316>]>> startxref 0 %%EOF 18 0 obj <>stream xb``d``Jf`Lb->Fֈ70<}gd`XR! Ֆ ? endstream endobj 8 0 obj <> endobj 9 0 obj <>/Encoding<>>>>> endobj 10 0 obj <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Type/Page>> endobj 11 0 obj <>stream H*2PHbw.=sKKK3 LLs=s -\ W endstream endobj 12 0 obj <> endobj 13 0 obj <>stream HtUYPYͤB%U*RLDmqVQG7DmQA-X˂7Y dsܗv wQvplZgl&b'bcd}q9'=lm0GmT)gUDOCі,^$l]y{ Gc^; _p߬P$EG$8sqY#KK$}h߫cT åcSp fb,ob-0O m0 [/p,þHb2(,{O8demm 1!>Qo3yKF9wԌQm/r:it藎t2ͺ] Mfu+m%yyż"$877+-LR tBGH-;Qz씣.wTkn]0PٱnD %Rnw\`?`Dv̀@-c21Wys*=yy?QRs+3dl}&LT$XDӂ9Nx۟`?Oݴ%qgJ˚Gܛk*0,EZ7!̂W̍zNbƕB{Jd.AoDI|Yés…ΖKQ^S+<8v}suvvp^|WwB_GܽXAR/wf~_1(~:fq;[7kZD)>â!yaP  m/p`#[%©wi%FᐒD8J%a3 rJCy=m)r~u4e{t%*a,SLqʞg{/^.=~Ш:9mhm{PgkY Y_WK#9ĺ6.N]Gd}OGhg 6Q(jgί@cͮ+s.uGZ9:,>ELJă35W9P(:H%!2E2B8\{7=Sb>]>yݽ]F}xp7M*vso aT=tgĖP_kg#}5h(;&@-$Suť".2VJ.P! "`i 0zȬMh#-g5,HC>+&~ғ!T]ai8^V|E]~`AxFXcWl*|yE§6_UJHlFh#|6fW+un6X4ٿl.E[;pr-2 ;wmYz[Zh!3P*/AZSLGU7z |q6OZQUdEfk5!*%SYjʕ"))k}z]稷`•8Nhs: L.1YIcsGO1-V|?`bЖ]y(i3peXϮ[مԖ嗢 2Ll*:/}])<Ť'džܡ~'EE&Y2 >Ihqc9RP`۠ƜqJ`sPC|mႳSi=Zs;]gAc-0Q[+b*>[+]?rN](C0c7xbOv8J.fQpuKQ3) 跈g+ z7 Yj6 D#4ak !>+dc@*2;\"PaߖZV4QBF.'˜Q9Y"L|$=n@mфK\ t{Vu7Qf0:SWȰDi0ei}\+|F̄&zV]̈·`8SzIj16̧Jq88zM6T2kk)#;{IԃgUasfqŎ} #ZmG 9ZXO{gP!HS \J̘Ȭrӷv>ZNOWө%`Ϊ(Ҧr48.2AM ]:Rrbm,[jTI/wOT4N{1k +Ϲ7X%\jj怺 jZuօB'>yZm#ѯmgHFNi?>YB9#T3{t4A.FZ ˞ĴX5^Kn1Anov9.GkaocZPc4PjU8JKR3O=fn y[i1{Fu@0BF+hvQ1YNWČ]&˛wmLҦ ɑtpUag}{^F}ޕ5  B endstream endobj 14 0 obj <> endobj 15 0 obj <> endobj 16 0 obj <> endobj 17 0 obj <>/ProcSet[/PDF/Text]/ExtGState<>>>/Type/XObject/BBox[0 0 326 172]/PTEX.FileName(./figs/BAT126_lc.pdf)/FormType 1>>stream x}Kdq~~E/5`N6w`08-]U-yE v}NU>"#'̟d_???>e/,[ o-k-uƦmW?Kk Wb9cu;-A<8"89:%ΎmWz 7`c7pcO;p|mA6;(qc[E{YN} EwpKpn7s#ׅV~Wl4`{ڇ>mX_1\[_Y_OwZ|Uߴ޹*l_so+)RwR|+_nEnt}j8gzҎ\V _&NW%։921ܲ-4˶ u.}s1[jT|{FwZT7 ; _3*Я)rjG_|Jŷ;_x>|wg#0qt5iΙYwZ+Ǻ=l4tn0߱ pe&q-[vֽszO$c;8lg7|0`s?y sKZX$Dm[t۩6p۸ϮٱqӸK=?giF{2yvYi}͏S9 CcdpLٙhg'g5uievkK<=*N؞ELV";);pozǢgs:1YvG{%G0vj=_]l{|jq1 8; כm\]٫6p~,?OىqN:y!^:gƏVY&9܏Z7I)Bl㲓0hFZ8s\,+:=Wm^{<n+۷%)+MNۮ4lu|ϱ|g5p<{4iilxDֵnyzu#ֺbk ,U64O_܎X4ǹSytc 8F6ЀBeqvvV7މ6CγbgKQDb|ui?+/fqLy1:51 ܏t?΍9!*v1 gf _opɟd;+ޯV潰Q8vys/ߋٍA-snvgguIv#;elv~,B-,ܸ|} vdl7'fbcj7Q_Wn7fj l^?7OY_|ܞѰ2Fٳq/b?/͹ǀ;q"oF V}'ġU;~eQ7#IG$Y=<12!{Mi|]S{=tP~ P߂u' {dbΰW*3fgov/S|WE(7lD;pm qo; ff@3mG 2(E4!^vFi5ʥP.?\\8Pvlb6aO:֦,A邜#Ӆ"]0aVhZt+4=z*4uiA8Z6a1LR r9h{o:X[7paX,qch墛]{Mndf{$PPZ1E_c`_j~\ZI9*-$Pce8m;cbHueKP5S[,V@iQ`fg4T~8OT։ny D*⠦/qPS/"v <0c>}``LxfR7 _?t,/NwCD @N/tw첑&H vUm'y ڈ5,Nρ<)NLKڱN(|V"m"Q42J|g!~#d$73zH)I33Yx(1Vr$UxtbvU0\TC8s={O 2H L3e nTX)`E&xg5^Iľf cf{Șv1(/KDprQ|Nߐ)[`" oŠp7 +QXA}~ޒiXݝ 5 c@&E2Pbp!>-B;bv Uٹ_"xIg1 MKlu74ԂOoEEI-RR_~fX$RhPwH+f)lq8KB*UQuv@=v'& _/&`%Р> [D!YX:Jr,=Y9;ҋ^?ζ(6UΗg8Ĭ.]3㾟HG 2l1~s@:}EC܂KQW|M9:%KeڟSA[G'FvS޸::1B"ϐE>B8XuSxjUMCMT,-;H5Rzi|+C $$'H^ѯ@Wƫ_1b1֟`ؤ=FQ+x x,.CA'!po TN>`d'2>1ӵPÎU,VQyQ_5BLa;=C&XhңRƳU"oكl{{(ڃ5G!AzpH+4'mz4' M/m%-+KRđj@P\aJQڑd -r" C>B󓍿 Mkic;GRgO)3L*.ʜ>P>~ 6`) VA2QU D2J(+ 8nWu& ,0J•I(JUOr_] Yz M q$m&F x tC?*7SؗJ}UiUiZF٢"Њe;$E!Va|+w-ʧ壙 y^Pқ|#{˄Q2 ąc{-B|3G-Q"ӄY WN@Y]Tr2<ɾ}1n٩{dI{$z* `d c>GSougI?j>lQ}۵%W%\@EVXDEͣ]B(ZB*rqw)Nb,Sc(PIősx9i$/ڑQ\7Sur]e%2K"ҁKd}gr:3dm,q!U&JR+qO3] t.}߫k ~2D.b"KVԩNs d(c/Uȱ nŮ=&4io1d `DpNG\{y!D\xK2H3IYIΘPJ{_BXbj {tuL,j1Hͦ"P1E 0zl?F~9HFJy8W)OF74A[tWF ^{=v %~P( *s="Gءf'}-;_ULK! hEUr(C&EYӵYOkC]lDp7-tPH"{TKUUyzqiմNwm; N9jnh,WkAɃJf!Yιmt33Lp̮T>d9[c!%k;Tb"Q-mKH.ұBBjPQ|ȅ̮Y٠xOjo$@Ƴ/o )fĜ3O1XhXN#Qx;DW@+6M.~ O':35JB`g|\Ԡ&/I5,~7醭_][LvѩN)/q5snwP6y8#yfP`o!~Բ܃bQÌlK`B{0=pq0:fԜ6_QFLZ~5Zo/.A.jR6,T) ]ZڥC !A7wGΏam班C6j+qFJ5Ru/ekƋ ݌;^IP{][z]Z n=*cG~T0Ijtnt*w!w139Tv/.fSdu2ʈ҈.F 0}~8޹CRd8 w>szRWc%qauAu0Aᨍ~`kWu; Io'A: m^}GhPR`A%w,-~.6E-`3>2zkbP.T={ bȤЮ &Zn|8 Vi K^r_|(>|T9%LJlu+,VV7qt,zv:O3u39d{d{*7X5jOhĕS L84xtlu{5K@7LF5d1zG4kѬWVimWkQ[@(?>ΪO8n): F)̴0i=l<ඈ*Mua3#e7pss 9tn4@m'36^9&r)TQQM"SX$IMMǓw5ݶ*ަբֲ@5̗qYLw!3;.4MYg5gB62V cV9jKpj5b52JcZo=5~9l!`B>4AF&pCDMlIW+߁J >+O~,SX4z 8y3@:y ȍbN%kW܍棡-3Ƽ 䝗ɏ#^3M\ľ {#E3./4p4vǁׁq@Lq`y< E5Re6n&JAnZ"}Wt< wA ϭ`;TD5˟hAUEׄږrjP(+0V޴i֛6WZa%2q`L;3}M>ጰ~ fMH ̝'ϵJqIhUฬ5R\G@ ʛ˱f(M7G!{em0/ɕr~?^|P| :+cl؉Spj1"R S)Kc*%UbӐ{QwC"LxMzI= XgN(f6 ~F*;(gSJ=C42"/m~lOT^_W^nsz#V\5p0} ꘌ꘣Vɰ`C,`LwAl!AnbrcHO>IQIzH1U$5r{i_E]kUaW5JՀ&U)TŰҌ60W7@1H!TSo'-ݦ? +"ݪg<}sd C,/HC$?ժ6YF|ݘHS ,UC{נ}AkF!kwᄿb.W)ch9Z_-Gi97.DWg@DWlؠ"JWľ|1 G1zH,;_N2zmMy;UKg(X5Q4;2*U;2 X +{4zSAcEO3I#ތ./`Pp:,i 1jJHTy| 4e~vĥ8K~)Β/I,$+K7-2t0V&.vnȩ*kizij㞽ׯf5}}}=U4rq Ⱦ't%jТ Xzr(-Vw2A?W W]n<iԈs5ֈzB%y[;=F $m3ˑaA1E}{b"1D,X^n>PǞWc{' v//@_G{+Q^vCdɼ-'NZ<3Z,s[S*$)tSMAvp "nAb'DDg e]g뫽j>UmUD, bSOa)z^c_1)bXjSOz'w& `(wI"Y鉳hS )!5M i)CK #|vFHs`0QOǰ8p>,t}=[џ

Yб!W{BƄPH1#] j1CJwML˂δt3'14>С(pJ=98P\Q\((.qyHEOdqxdYb}gW%mUpW%15=1g l d̰ƘxYm-!lmE;]fyV%X($#:ǢTH^S4l0&tܪ´UV-!j="ȎQSuRv9{fޞ^^Uo9:=AI9ИE ]}I g'Azmp-P_ު ^᷐Hp=٩[NXƭ3{(홑 %=$8#?"C#AFC%8\K.`m̕bChL-| LfۯG3HN>&YЎ+B.g"蹡9`[ =dTa) vN51l>6ۊЃe9l T8 "O#?BO6bT%o.v1-~C=ykg5ꜣ)x9d5v5hT׀K}"W52n&a 5&/@a Aw quir!Mx(qź 7aܱ%}S\n8j6ǣ8_KLe<5Z~' {Ɯ=S3eNm#Kvv6!W .{}^oz G!Ul4pmMQqĿA|1,Z"gQ #7˹b^R&, K50v(F6Yy6'X!;oyzG!,p){Mɶ)l!CIҠQSLqΨ!]gm[ڲ=nXhmD 47mߥ!܏:x<GM5 <]Qc/wY2C@ Y uf}ت=fh1Zc3 k"t/+ݳQ*&K!`o%udY 2dAu! jnP5Cł%8yO⒯aMa>Y;wVjG;)Ra'F|[@%;ua)3u1t'H1rp<1<#z`:Ww3P3NMV'`)G #JnJ zs͵Ab9dŀzfMI fZ2I-$־꜌s ~pƌl_?8HCђ?Ix9H z6V>?*al fo?`H~.ѭ0ȭ4(F,LkOO[q={?ٳdݞk]1‚Piݪ^֨S'Ghpx>MGk Anioiťde}2jL>!4 mA3עHQ" pQ+P _JMSWDjXj^xC(M}(K)xUj,sy햁~PLa*i=x-cw 4pP\ o1Lh l xN{)S0b=uJRKcIߣ%㺺p=?JȧvIIIs>o_o_,d▐P:5zxh>4DZ1qhUaצ"["KS IM-h-Jzdk: 69:T]q!i?BR\t|/i狠,} И$R}nۊx'8{Bְ&߄4OΎv~Mr,^+f)J ;-_a'j$'SϨR L8ׇ0⅁/i$N"ݹϣ Xl5p@z`NGI7t$7I8Ja~Q0& eѳ$sFo)Rɰz +ɰjh+ dؽڽ9ӊi7~/ K aˎ)CB9 9WE z*)`?}dTynU:IPALcz)J7d>T;z){@/CzWzһ}=Q#PlbC=L/{ꃱ6 羰l|+¡Qpa?ݭ=t8S~O7[GnO/ƣؘu 6v_C9%su,R,ԎT]D+5*T]680/ =~@ q3 ?G~nI73nH(9;#_kxlL]!Ses2/œ1OQUu9Cyb'4Nq'9\.+]XM}8P0χ-CG34<.~ zTt*fNStjԀܯML&>5Cz%"i.:5iQlWiU > endobj 2 0 obj <> endobj 3 0 obj <> endobj 4 0 obj <> endobj 5 0 obj <>stream 2019-06-11T07:11:37+05:30 2019-06-11T07:10:32+05:30 2019-06-11T07:11:37+05:30 TeX application/pdf uuid:722c9e0a-bfba-4090-a0af-78b87df44a54 uuid:94884f6f-760f-4a72-828d-e0d1c53c6dc6 pdfTeX-1.40.14 endstream endobj 6 0 obj <> endobj xref 0 7 0000000000 65535 f 0000021082 00000 n 0000022273 00000 n 0000022361 00000 n 0000022437 00000 n 0000022489 00000 n 0000025891 00000 n trailer <> startxref 116 %%EOF

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.