EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 624 (April 2019) A&A, 624 (2019) A25 Full HTML
Free Access
%PDF-1.6 % 7 0 obj <> endobj xref 7 49 0000000016 00000 n 0000001507 00000 n 0000001582 00000 n 0000001703 00000 n 0000001930 00000 n 0000002058 00000 n 0000002205 00000 n 0000002265 00000 n 0000002521 00000 n 0000002781 00000 n 0000002940 00000 n 0000003123 00000 n 0000003306 00000 n 0000004357 00000 n 0000004496 00000 n 0000004653 00000 n 0000004793 00000 n 0000005122 00000 n 0000005424 00000 n 0000005654 00000 n 0000005797 00000 n 0000005883 00000 n 0000006027 00000 n 0000006324 00000 n 0000006482 00000 n 0000006622 00000 n 0000006996 00000 n 0000007404 00000 n 0000007729 00000 n 0000008116 00000 n 0000008253 00000 n 0000008661 00000 n 0000008820 00000 n 0000008938 00000 n 0000009218 00000 n 0000009354 00000 n 0000009744 00000 n 0000009893 00000 n 0000010210 00000 n 0000010528 00000 n 0000010990 00000 n 0000011325 00000 n 0000011759 00000 n 0000011950 00000 n 0000013001 00000 n 0000013284 00000 n 0000013314 00000 n 0000013598 00000 n 0000001276 00000 n trailer <]>> startxref 0 %%EOF 55 0 obj <>stream xb``c``ugLӃb9>R >ˆF r=:(.PĢ B !/b Y|0_w``]!{:f:.Peh0 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.=s 33,LLMLMs=s \ I endstream endobj 12 0 obj <> endobj 13 0 obj <> endobj 14 0 obj <>stream xm1 E |R%(^ŘxU-GovQu@!ꇜ>>stream xm; D{ |2נV!ϳj~&uZ_ A=IS5PΡ.ފT4=Ȼp-q&HoP?(Qcx 1Lc:$L]+pN endstream endobj 16 0 obj <>stream x240S065U276r,#s# $`Ad_ endstream endobj 17 0 obj <>stream x261R036R2,rLa \P%H237ATpcbr endstream endobj 18 0 obj <> endobj 19 0 obj [600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 318 401 460 838 636 950 780 275 390 390 500 838 318 361 318 337 636 636 636 636 636 636 636 636 636 636 337 337 838 838 838 531 1000 684 686 698 770 632 575 775 752 295 295 656 557 863 748 787 603 787 695 635 611 732 684 989 685 611 685 390 337 390 838 500 500 613 635 550 635 615 352 635 634 278 278 579 278 974 634 612 635 635 411 521 392 634 592 818 592 592 525 636 337 636 838 600 636 600 318 352 518 1000 500 500 500 1342 635 400 1070 600 685 600 600 318 318 518 518 590 500 1000 500 1000 521 400 1023 600 525 611 318 401 636 636 636 636 337 500 500 1000 471 612 838 361 1000 500 500 838 401 401 500 636 636 318 500 401 471 612 969 969 969 531 684 684 684 684 684 684 974 698 632 632 632 632 295 295 295 295 775 748 787 787 787 787 787 838 787 732 732 732 732 611 605 630 613 613 613 613 613 613 982 550 615 615 615 615 278 278 278 278 612 634 612 612 612 612 612 838 612 634 634 634 634 592 635 592] endobj 20 0 obj <>stream x313P0P4S01P063Q07TH1243s,dTˁi ʌ, Xrf endstream endobj 21 0 obj <>stream x5 0D{8R[.{9>G-dCxI9>Q4Zo:Hsd33}d4I!rY)z>~ endstream endobj 22 0 obj <>stream x34P0P0S546T04V073PH1 X\00247CbBeX r`J# endstream endobj 23 0 obj <>stream x=RIr0 |wII'ԗcwi+Y~.;K"|mn%%WYJXX5UOLL$KI=~^~[dc[LذT4ݔVve,7d&uK0/Ağr, )v@xW S+;DR93KF#`m֘ UEkN+">97t0MUȰRX{h pzq+fd endstream endobj 24 0 obj <>stream x5Q;r1} ] 3og3JFfa =؈ėoYf~'Y)QTEX!Yjs#Sr&>'b8Ύf01h9f=!#n4U i[ZSEȺ)Z[=- c _ĜE'~3尒4#15όO}>hw/̈́LHœƘ1T$?г>0TG endstream endobj 25 0 obj <>stream x=K CBGtJ l}b"'ć$l{0rM$q ¦cɦuJ~w4ft-Ev!"ܣ<`1J0Ze=DG7(*KDw4e8$ endstream endobj 26 0 obj <>stream x357U0P F )\@>L̀,CKd!eba26"X@lM4q endstream endobj 27 0 obj <>stream x36P0C. endstream endobj 28 0 obj <>stream x50{`ɥ htMMBQ0tf}qhV^hJA endstream endobj 29 0 obj <>stream xEK!CGp;.:l%(3{Lnd;0sJlLN\#T޼頉{DΣY jg.7ɭFiwyHT9λi Yմlk?*MlVWw'K~0%?Q|]7g'W&kyI_ʣq)$_SS{ginV9 endstream endobj 30 0 obj <>stream x=0C{`c~>Tml='a~־#)G.2Ey(uT$\pq[Ӊ endstream endobj 31 0 obj <>stream x0P0P040S047R076R015QH1 \00,,`AdA,#SS Ȧ2 endstream endobj 32 0 obj <>stream x=;0 C{Ȍd'>2VI(/u< i& b;w؞D/)ϡ+E:Ū0[M*K õ}74uK hY pu;Gw5<TQ!OJ|<(!\{0FS@\^BAjI'>stream xERKr0\ 3gNWp:<  2=eH6dWdՐFD)򹼖\nJ?72ͮЪG6F5+# CzVQdv!:Sp,Cu)mA#o<rLn[ :[m@ s` )(UI­\';PЪt79`Òho>F, f1H'N=q:őpI8@/ u:eMžBRq"n]ElO ?*3b Ԓ枾?9 endstream endobj 34 0 obj <>stream xEK D#>stream x5RKrC1ۿSpΘ}tj'+-@B./YK~%ۥW%B>R-G- Q=2'":xa>N)x_xN;2$KMH=I+4t~&+s{rj X+)$=Hr7VސWg%&&MܕBXtLX㰄*aՃM5fcdxLP} #GMv²[6!D3,($Nc$ Ұ9 9e, mh%zМaמE[{ endstream endobj 36 0 obj <>stream x336S0P0 F )\@>,́,# .C c0mbl`fbdY 1 r endstream endobj 37 0 obj <>stream x5R9@ } ] v͜~߆_ CVie!U-.Im W%ڥ Pt,6˯JH+kLwIi"Eo7o}=@.^ AS(i|Ъc(ew 4<3}(~_K&(? _osџa`Ś}@*z`yT endstream endobj 38 0 obj <>stream xMA "OPDtz_NE5jK02kP)U0\ 2IL{qIqzz"X endstream endobj 39 0 obj <>stream x36P0P040F@B!H Y@8&+ & endstream endobj 40 0 obj <>stream x5P C1g dVukm;aBXȔy)K>:L." u%ʚ +`p&^7`i5tႦ.B%|u{OxjrvC` jMX>stream x34P0P4W546T060Q073PH11s,lLeb ̀Ɓ% 9pr΃ endstream endobj 42 0 obj <>stream x5Qq0 54sۿ @;a@dJ\UGM>`!S֖{&UF!}W2j]* UYFp&I8d Rӿccz endstream endobj 43 0 obj <>stream xE 0D{`~&f( JpO{:2Sa ,S`5FR죰n_uzS*Ovvq= endstream endobj 44 0 obj <>stream xMQmD1 \ky R]oC /)%K [UC?13,=?TPbht/"+ߏe s`&4`oI&ռ3d‰ATwM,3V7: lx%D`r Z`Q+ tĺv7C/਺x} K{,|BL;wI#fR:=b}@e+ (\* endstream endobj 45 0 obj <>stream x-Q9AzBsˑ C :-qPO+Uwu9HTM]vf5,?c 7zqxLu5{kOfP2+qSușO \ ȹeƌ#M!RH&3AQ~#aU#j \Ks4;<9GW +ET<pC7ҹ^s0XM7/=[ endstream endobj 46 0 obj <>stream x=RKn1)@Mr[T /1 %?ꒈ3L~r]Qljg!.6Xr_rњbO/ȴTXVݣC(-װr{d`Jn@CHYAaPl( WԬtb ) ٠[]aP[[xfޑ3qYk?=Q2QMg|2RCgB'`$Ip#A 1qOl)V;ޒ{,\L'ib?lK\+E(~Aq|XdDw#h% 0xyDhDԎ=(ͱ&{ǫvzcw. endstream endobj 47 0 obj <> endobj 48 0 obj <>/Type/Font/CharProcs 47 0 R>> endobj 49 0 obj <> endobj 50 0 obj [600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 600 318 401 460 838 636 950 780 275 390 390 500 838 318 361 318 337 636 636 636 636 636 636 636 636 636 636 337 337 838 838 838 531 1000 684 686 698 770 632 575 775 752 295 295 656 557 863 748 787 603 787 695 635 611 732 684 989 685 611 685 390 337 390 838 500 500 613 635 550 635 615 352 635 634 278 278 579 278 974 634 612 635 635 411 521 392 634 592 818 592 592 525 636 337 636 838 600 636 600 318 352 518 1000 500 500 500 1350 635 400 1070 600 685 600 600 318 318 518 518 590 500 1000 500 1000 521 400 1028 600 525 611 318 401 636 636 636 636 337 500 500 1000 471 617 838 361 1000 500 500 838 401 401 500 636 636 318 500 401 471 617 969 969 969 531 684 684 684 684 684 684 974 698 632 632 632 632 295 295 295 295 775 748 787 787 787 787 787 838 787 732 732 732 732 611 608 630 613 613 613 613 613 613 995 550 615 615 615 615 278 278 278 278 612 634 612 612 612 612 612 838 612 634 634 634 634 592 635 592] endobj 51 0 obj <>stream x=P11 *agRAHFBTeR9Py _,2>OӨO"d3sS.> endobj 53 0 obj <>/Type/Font/CharProcs 52 0 R>> endobj 54 0 obj <>/Shading<<>>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/ExtGState<>/A2<>>>/Pattern<<>>>>/Type/XObject/BBox[0 0 360 324]/PTEX.FileName(./fig15.pdf)/FormType 1>>stream xK,Ǒ߯hxYtY ³teYYՙdC0>Uyo?|oo:m}cH~x?4O|J?k˜/nǺomL ~Wݾxwm?)}cZ]zץ_?_/7y ?!5}z7miC~Ӛz~|7q~hǟgauF>Lk{hǷݧ4Yy11m5ixmH4b'tv.z>?~BL],.}]Xσɺ?}WӶ<)Ej:W_jՙ}y5;R4˫|ui_^P_ƭSSףSSgѧ~y5Cѧ~ayi_^ӾǫOjW8c_Ƃx˫q)Ǿׂ˫q+HȾ˫(hȾ ٗ94d_^SACh,hȾ ٗq{>iXs]}&=OO2_Оô>M6@a^<_k Ojةߤa\80.kn]#5x1>Ӹﷴs~/M~|۾F+k8p}[;sV۟8iz?y?9;h>>)'m--oB|b'V$9g'D|j'H,;:F>'v:)+{9IwRS,}y<ٚ)sMjǰ[~)kW|,/|5%M}iZcK?_Mc~d,~?$@sӘjWӞ>_M[K6|5㰾մI8[~Ք3Ɔܗ~s_97cnطlܐ ~*=sBsr<[?^ ccnHlcnȜ0|^{?ݑ%l@.aQv`_!u>?2M)/Ϸ}_L8%I"a|nIUMۗ}8?‘cOR-hNl6>L#cu>c ;HL/A-|2IIY:m=@2!#Ic%rOv:?)v{c{OϺߨ9xǶVن姴:kuO >eu9Y[\sxѷSܟ#["DxC䏤1sҎcDo5>Cִiyx<'au1iRa\4 񢧝>ۓ=#q8 8~us7>JlLxv?}LKφDOz3sXZ̴'HL7$,{վ ̱`ݚy dhz'?AӉF;I>O 4J/'T?eCK8aYL)\#䌙QFr ;>ы(fQ Slr(lPՓ $뎴7eax/]]щbK014ILgκ*ನUc#ټ[2'<D%5em/,k#:o0}?!;TF`*< R} vv*wDe%>Ml1kzq`sW$OlvK [oB\IsF\f,ބ'̙Gg!0c^q[:fQnAЗ2+&V)@X8O7 t=VƸ%Y$E`łGkz F| B19WCSQDd5WArlIc5"a{'0w|f[  ~dSMCg@ΐKR XՄB1yzro=oZ(uQXh6>|^JDGbZ^z4 4d<(y+F/'1(j*E~. @M 8D1w]Fl3+r$SiLÊDJ Km',KNgՁIaP(*gWzmaS\`6D:D]wM $aF~ŸHyr]' 9;uPl]{H Pݒ:!a =w+f&&  Jls q.}a Yz|:]GyUϭDorHZ75Z/~pO'W "1\f]1愱i\J<5,"M;F-)6a,=-D=A6,&DqF^>NS ː|Xg&;߲p*:=#'i_ bY_d rNK0E3Xp Ҏᨓ9P!o!.*멮weTC ^a#xfВb26a!" d G USQYf W|)fsvll,OVR& .%SCԼ)j *4n!ylĹ#G7Re-8fO =cXza%щ =yhʍiqKUzm3|XMYw ݾ;M(dFn1[w3f3:: @s`XD Zg8M'm܎Sbo_ɭIo (]Oi4T!M$-E:AͪPux kj3S>~f`9b' xà LR8U t}¥s=ye||WYJL?0qN(u,A:LIwlS`*ԐuMj%Y'DYy{brQ7H`6qX'; K]j>#*ۇ{VmBi`ddd'-gΤ͍Ci{_ 3!Sz{Sj`T$ WFtȔL9λR,4`q X `#(Rs*g)IsXD0TbϨqKGt kl(xzs2ϛg˺->]ɑhaV@gM[?-Pu4,ޏuS @3" 3q9h-HBAtxLmh2 3SݝRy^W(ڊ2B9ڦOhElX78LLpd?Z˒1i|w)M m,t\\Z$d VVܣGWZ)XblPx[ʰzQ^p1ͯ".^B U͊&喆TH|ܤwAB^үjQe`kWy~:w=li;}OMfR-",irz\orʳjXC&y|"|iӇ 0'6k!k|^H⿜.Aj 'ʿ46R( l+f$q-t}꟢] u0=ZPMn2$4Ec'PIX&oTsnoX8D:ɾ"e-ڱy7 CѻDIH91뙼Ԍ ,z,Z3 Y HƷ`i7m:W bp t"TT 䝝t"qE#^|Ӱ3a`݉2F3"PLJ\3 W?L76=X8iWeM6lpYضNe'Ѫ' m9~ nHgg4Wa : lؖځ=jW8/h/WC,KKٛDҧh:5K$!Rj!{cFm|Je2eK5)}@jxsq"MP!Q4X"ձTzuQ@=o`V͌ 2a$dZ$ EK#'9'Ҙ}.m#[3"\ЊlaL(!9e1O2bPPi]$GTFDf||1 |XՔd}eKɬ gMvkS,noh ,eŽQz1iC$T?qg:jw{d̨Ie{y^,m M aPDfeYjfaRE<]FL86VQ&`:f\bԡ!ڋY2d(\ʗ/N1nU~)ɞGklUKǙX yaM=χp/J_y)08"!8ۜR5>zXHsӢ8ɿ3qȮ=_B?1e5-噤z3U"Mu191kmr⨃ '衾onWZlS[\b+!U@Q5 -XD7WJJۥnӮ9ƪ~uuYs$KۙpEX5cBD͆[ Vu68*挟Qiz0-P7nI%^ĮjY3AnܧqETZܽ[pi\{:g&-CS/sPt6f-~hh\P"TMgD@+dd:g Ҙɲ5Y48hq~ZJ\57yrYxܺzUwz`QGعo1J #Cu&}u Gn u7 ױ PNvʧ4ǾМ>XoiylGBKlKiO,(wktA"URm_d-ܔvvwՃ aI^@ҝ!"i$qo)|ua8ƟWNYe>BRb,Z.!]b/6XI8 &n^⚝ߦQ%=Mh BWU)vݫYEξ>a@8|+DjXO'!&+ ;*Gjy?o~ޡyֹKij C<[R*ȡnm y=5Ůk֛n]PU5Z;lg- E H0Nfnra=C:ZY8p{f^ȍK WLϝU?2ڭlNa vzq3|Rw& ]ɡU:_ȉ})ϫ%<+m՜?-@3=uRHJZa/l^?X=E[\Xkܐ +^x~&@*W*-ZrdjXUŭ&켬,bV~vSȘEA-NzZX-LFo)5TX/8D<)8qU#HiFlTAFTʚ\(qkdM9 ^zX3,Y D +S)Ί@2KRG4>gG8,݁"`i M3GeA~#=% pR-Tk0jݱMn[]ɠȮk rLl&ҚD]P` Z\Hpil )0_jl/=[L2Ù:5#hGhX{]`=@Hsf"P[iK5lBX$ YrmV6C}|D6#DնuضtC^Eu}Yi8S5hfCyQCGPƝ.umTBl$Gg7cxssqeSr7T# ax_ (cFj~ ]/v:dԽ*~P0w}M8NY& _ aȓ\Jsui+BAݷ빋MgJջ6GsoM^E߂>;LdwiPN.,d1+ɰdǑ`ʀLE.3I=Ӳw7}Ϸ__ʲCkK{DV(J|iy+~Wܪ}eդ =Xyꁥ5+]9Ѭzsehn֐oAtl]u&C.9@~sK¥?R‹y_b|[|[7jت}i@-Nࢂ'~dHhWos)K˕uK֯T**Dr*Ej 0\:F#Yo"l!eCmQǪ#)Pk2z&bY/LS^92A(c^~DKBڛJӣEsLtV\mDǤ* WQ+YL[+n=TLEav չr(c)hq7E5E[yEnwYPZn(%nBgTRhTvgiu-\QRZ83WJHfț"PZW8_aR p V:[b>Ǻc X0%cUǐ;D^<2P8uJ, bw(\Y4+m>N ߐ*4WG03 ?RkZR=l*sWH[a)@,r #T-K^p4L I*y\ljõͭT{\U˻ A$m3^UJFȀ!&mS@UE6p&Oe^},-{Ӌm?PG!B:eFh4"Oqx>2w֜ /_#b[Sje2êǡ9 6c&@9ҬfcmD% ό7$zI\zO?똃,rG:XBOgS+$sX1SB-,Z; &tzrHFP}],5r8*v8^f'ܵ1PF:Z =vjCD/`(5}fadADj #z^B!DEz+Hcpy+::jxV{ e0Ёĭ2e=A|޶8TD6:gKH ,wfșD}PTdpf'@&d !d CGX iT0B֯] Z%+ 00QQrfwr2"d&IFݘZȂҔݟ t@9 Ӵ\Ǽ+B}+έRKt|?;S(ɮ)OxF2f>#L&uO#繑CBL%]`г%³inD"PDV\4J˰ar#I o n +5%G5A!"|l-$qb~{ 8dGY8V_$R %P9Y&yCfG_%S*iԯ Tϲc}qG  0= k&?SջB`)!}s7G,ąTS\CGR4m,B}Brlp5zvnS3<«j+J*i+0_Z='o4I/zLs4r1).V+Ԯ c_2ޘ:MlY蚵 @ib훌N3OO Apzfraڮ@`<1'Y h%TUPXAl$ԺfS:vrFt誠p%#[pVBG}Hӻx5rnJmDjWlXxZ@# ՚nD}*v,N|M,4v^>:[*Y7)rȰޠ%m5/lݩnw6#"} f 6Gu|б̪RcSkd;5Dۊٶ\MB$$1`>Blzى:Ui(^ D T(D2Dl %0g_Ѐ]1,VfwQFys#m뇆*^%t`ȇcW`72:a5YTTVtu$ƓH!`Vʔd#=XtDP⧟O2RgG]S["iU(={ڍ^W]%X(%Ҹ_Vt[X?}z懿z fn p s/Ӂ=e9 Nu]Cpz}Yܺ-RDYDqMh& 'YUGAnChk zʚUȐvdtkg7x Y8ܑ^;w.j.M-׫?h(z`KUV.+[3GlAoI4(erPH$^qFKV.h_!$J82{|HD԰nb~yyOn̿FV+9j[$'r$=mꫳ;ҋJ mziD\\MkDF$NM:٭Ί21B"ΒimX_Y/n|ssWi H={[=Cp:I/UC7;qSKXH.DWj0 hې1y:D-4$g@0> kWڀH[*HZh]!KfnԵe)kC%_W"?0&~X*jwVuT0uIظk4uڳ4R#a1~PU-hnU"dW[e&v^'`cq*Rȝ:Z[Czv^y%HĠun,D˥V I + F# v暭zZY T*q ⠸mJ׻{89]R{ "UPz]/U>U9>nV5m9ifW;r~yT2CwP]iL Q7H_X "2nپ h1r/6ysIᯮ-c8g ̠dS=Fw!I+ cV,)mꬉCeܬGW.RE/Wͻ+[Ө?o!4LePˆ`;C3hQ-}ߥvw1tU)_,~cvK rB5|sJElus$K/ݵ57AwV'|:C|bV!ccz4ej\;GL{yaBl. Ғ5ݴ"UO[2F12RD.JxBX%a~_o1 rrcJYa܎O#HmM sLY3zpv~ܻ~OÖ~*ϟ!?ko_5O 2ӂ{$WݾIݷ1풙t}/np,6x-$^$OcZQŷ۹Ǽ<$ Ú[/ Ǒ-;Q~> endobj 2 0 obj <> endobj 3 0 obj <> endobj 4 0 obj <> endobj 5 0 obj <>stream 2019-02-08T09:33:57+05:30 2019-02-08T09:33:30+05:30 2019-02-08T09:33:57+05:30 TeX application/pdf uuid:88cb0875-e4ed-4551-8532-786cba9c6ed4 uuid:9c2cfe9d-5527-4e22-9e1c-019895441284 pdfTeX-1.40.19 endstream endobj 6 0 obj <> endobj xref 0 7 0000000000 65535 f 0000027774 00000 n 0000028965 00000 n 0000029053 00000 n 0000029129 00000 n 0000029181 00000 n 0000032583 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.