EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 622 (February 2019) A&A, 622 (2019) A174 Full HTML
Free Access
%PDF-1.6 % 7 0 obj <> endobj xref 7 50 0000000016 00000 n 0000001522 00000 n 0000001597 00000 n 0000001718 00000 n 0000001945 00000 n 0000002073 00000 n 0000002220 00000 n 0000002280 00000 n 0000002708 00000 n 0000002891 00000 n 0000003942 00000 n 0000004082 00000 n 0000004168 00000 n 0000004468 00000 n 0000004765 00000 n 0000005080 00000 n 0000005405 00000 n 0000005792 00000 n 0000006023 00000 n 0000006231 00000 n 0000006639 00000 n 0000006798 00000 n 0000006916 00000 n 0000007196 00000 n 0000007317 00000 n 0000007453 00000 n 0000007602 00000 n 0000007919 00000 n 0000008237 00000 n 0000008699 00000 n 0000008948 00000 n 0000009331 00000 n 0000009511 00000 n 0000010555 00000 n 0000011064 00000 n 0000011496 00000 n 0000011936 00000 n 0000011986 00000 n 0000012255 00000 n 0000012434 00000 n 0000013479 00000 n 0000013683 00000 n 0000014164 00000 n 0000014207 00000 n 0000014467 00000 n 0000014659 00000 n 0000015704 00000 n 0000015725 00000 n 0000016005 00000 n 0000001296 00000 n trailer <<5C082DA8B2D40F43ACD639826392ED86>]>> startxref 0 %%EOF 56 0 obj <>stream xb``g``f  ň1ptr@% E'%4p:x99leF+g6X s!f:.y"` 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.= K#s,LL-, Ls=s M\ J| endstream endobj 12 0 obj <> endobj 13 0 obj <> endobj 14 0 obj <>stream x5m1[ D2ORNI|iX``7,C)?钪%u&G;GwJP [.vWrm&9w*DiD~&^yLH 64  uQ3XId[1@ عm):d"0fs2x(յs%gqv${S3 gp6W{;9tL t8| sQ44pbvŒ9/\-_NͳVӚ Dov;<04uw endstream endobj 15 0 obj <> endobj 16 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 17 0 obj <>stream x34P0P0S546T04V073PH1 X\00247CbBeX r`J# endstream endobj 18 0 obj <>stream x36P0C. endstream endobj 19 0 obj <>stream x5QIn0 .AO ``hKxA[֌]< 'Q^{ .o8|^Z9O2 D`@ai'ώH5YN_KK(O~ J.kO8'O [WLcD.A|!]'@;綟Wuu)O645I"%Ҹ[{TS endstream endobj 20 0 obj <>stream x5O;! 9.m`ϳT/od HDG&^S=Ä=Ba$5븛ſ]3 b0řvX'qNcDlc]L(!0%)}9:Nb.a}1WOdP=&ՍI4^2`a$YNkGQ"1'2Ҝb :; *s>h][M endstream endobj 21 0 obj <>stream xEPC1 =`,{wHۿ=JFp!Z?ZK oGFA= 3A΄@xFnvpμ39Zpә\'mBITqTqLύׁlӑ!KI%&~S*)[*EH䁓M4,?Cb̠Q0qGuٜ9-L|X&Q)2>'\N}䢥Uޑ"ۡW%Qէ<Y> endstream endobj 22 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 24 0 obj <>stream xEK CBGG|tJ￭!M@w'/mK >[ x6n5uVhR}ith6s+ fz:rGp_Gdf)|Q]dcnk]3s: endstream endobj 25 0 obj <>stream x=A1y?)vBX޳UO_K^1BCoj NjK)Jș`gzb8V}F%hGSiܖq5)\W4ݴk8߽U__. endstream endobj 26 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 27 0 obj <>stream xMA "OPDtz_NE5jK02kP)U0\ 2IL{qIqzz"X endstream endobj 28 0 obj <>stream x36P0P040F@B!H Y@8&+ & endstream endobj 29 0 obj <>stream x5P C1g dVukm;aBXȔy)K>:L." u%ʚ +`p&^7`i5tႦ.B%|u{OxjrvC` jMX>stream x366W0B]K#c R!Ő pYUp@i4ߪ endstream endobj 31 0 obj <>stream x34P0P4W546T060Q073PH11s,lLeb ̀Ɓ% 9pr΃ endstream endobj 32 0 obj <>stream xE 0D{`~&f( JpO{:2Sa ,S`5FR죰n_uzS*Ovvq= endstream endobj 33 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 34 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 35 0 obj <>stream x=RKn1)@Mr[T /1 %?ꒈ3L~r]Qljg!.6Xr_rњbO/ȴTXVݣC(-װr{d`Jn@CHYAaPl( WԬtb ) ٠[]aP[[xfޑ3qYk?=Q2QMg|2RCgB'`$Ip#A 1qOl)V;ޒ{,\L'ib?lK\+E(~Aq|XdDw#h% 0xyDhDԎ=(ͱ&{ǫvzcw. endstream endobj 36 0 obj <> endobj 37 0 obj <>/Type/Font/CharProcs 36 0 R>> endobj 38 0 obj <> endobj 39 0 obj [750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 0 622 466 591 828 517 362 654 1000 1000 1000 1000 277 277 500 500 500 500 500 500 500 500 500 500 500 500 277 277 777 500 777 500 530 750 758 714 827 738 643 786 831 439 554 849 680 970 803 762 642 790 759 613 584 682 583 944 828 580 682 388 388 388 1000 1000 416 528 429 432 520 465 489 477 576 344 411 520 298 878 600 484 503 446 451 468 361 572 484 715 571 490 465 322 384 636 500 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 0 615 833 762 694 742 831 779 583 666 612 750 750 772 639 565 517 444 405 437 496 469 353 750 583 602 494 437 570 517 571 437 540 595 625 651 277 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750] endobj 40 0 obj <>stream x5A0C9G<5oV5^TD @*݆᱗[azޥ3ZNsLXaΗbl[AˠyNiaۖʞd(ñȗ(U$GD:6dliAQ-zjѼV\7KvVmlp駣?&sڜ9z]V*I ~g>5hR endstream endobj 41 0 obj <>stream x5Ind1 C@<*6iW a 6k?aek絚z|͙#e^OT;qhH?Iװs n%X e;lp|jI& ulob- ZjZ52? a-]\'^-Q=V\-^@4z \h#Hbә> kmCsnkA ) C:hg%]:J)>꧞مRP\goqFS}LO (so_3^ endstream endobj 42 0 obj <>stream x5m1 ES@ g _~-Cm:eJϖODS^reԷ؜{[TMζ8l Qݖ&JB@C^=|0}Kq(8QvLJ+SOTi0h@K`;"!V#& ČP'3L*G$NQTE/}e Bmcrb.'' *P*Ǩ|sDY7bGVIЃ$rYAe4vN:cSu`(-O(6pYvVc_CActգ2qmQCB^?& endstream endobj 43 0 obj <

> endobj 44 0 obj <>/Type/Font/CharProcs 43 0 R>> endobj 45 0 obj <> endobj 46 0 obj [750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 333 277 500 833 500 833 777 277 388 388 500 777 277 333 277 500 500 500 500 500 500 500 500 500 500 500 277 277 277 777 472 472 777 750 708 722 763 680 652 784 750 361 513 777 625 916 750 777 680 777 736 555 722 750 750 1027 750 750 611 277 500 277 500 277 277 500 555 444 555 444 305 500 555 277 305 527 277 833 555 500 555 527 391 394 388 555 527 722 527 527 444 500 1000 500 500 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 333 625 833 777 694 666 750 722 777 722 777 750 750 722 583 555 555 833 833 277 305 500 500 750 500 500 750 444 500 722 777 500 902 1013 777 277 500 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750 750] endobj 47 0 obj <>stream x-1DsUA U9ZzN4_b3S%K"^rps$c@I$g[PFNbMZZRc 5.K'a~$xa(3r. 0ʻs_4-[ endstream endobj 48 0 obj <>stream x-˕c1D/ B_IOz΅  εdIWĕ}6o"M>-5bK+`]|6MMũw'id2`ݫ3=4p36 I޲ReGms+WxϣS&.3p0^ϳEKV қ4Q$K?EteW3$xJ$6NL"21%<;m?y&:z?Qw̼WFpyUkA] ej t́دx7ilc|'p!8BYYϹ%*6~ZP^6`uy1ɶΙYėQcLNTUhrC1z!v;hr53's3' endstream endobj 49 0 obj <> endobj 50 0 obj <>/Type/Font/CharProcs 49 0 R>> endobj 51 0 obj <> endobj 52 0 obj [250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 333 408 500 500 747 778 180 333 333 500 685 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 278 685 685 685 444 921 722 667 667 722 611 556 722 722 333 373 722 611 889 722 722 557 722 667 556 611 722 722 944 722 722 612 333 278 333 469 500 333 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 480 200 480 541 250 500 250 333 434 444 1000 500 500 333 1109 556 333 889 250 612 250 250 333 333 444 444 523 500 1000 333 980 389 333 722 250 444 722 250 330 500 500 500 500 200 500 333 760 276 500 600 333 760 333 400 685 300 300 333 500 592 250 333 300 310 500 750 750 750 444 722 722 722 722 722 722 889 667 611 611 611 611 333 333 333 333 722 722 722 722 722 722 722 640 722 722 722 722 722 722 556 500 444 444 444 444 444 444 667 444 444 444 444 444 278 278 278 278 500 500 500 500 500 500 500 564 500 500 500 500 500 500 500 500] endobj 53 0 obj <<>> endobj 54 0 obj <>/Type/Font/CharProcs 53 0 R>> endobj 55 0 obj <>/Shading<<>>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]/ExtGState<>/A2<>>>/Pattern<<>>>>/Type/XObject/BBox[0 0 521.441 402.718]/PTEX.FileName(./figures/vs_before_PT3.pdf)/FormType 1>>stream x͎\GrwI/x?!C+["`Y%! lww"ﭛhŒȈ'2Oy n;ᒃ_Sr%d~q5V\\j].ʧ0]Z,q4C[)5-ߖ7 ,̊>u]o.h߼[o޽]>ram=j {Yc5Ǹ &yV_|mɭԔSѩɇs 9a~B/3lkZ_})yCfPhy7ȵ2ok `ze|kM-7K߰K|.o;Zyk5q F E?" =9V1XYbr-5໦5fr>z{4o.֜{9!ULϦDS},16vU'bK\b.L[m#gsK$ܰw6N0.bOuLy/^u;#G]n¯5V疈|_p-* .*>*AXiZ:7-V.<x c fB9V-2ZXcŵ~X;ywshI3sXյW~j&1 Kg5]'Ne5Ky$\]ɳ\EckȪ"9Pu\џX3hZK"`< \",<2#c*1fgg\D|+2wj6; B$zHR)]tŗ%A%0$Jȱ$2I{KCN!$To!?$v!S""{n⌕t )YF\jx 5%*K6Z9AJ "p-֏7K _, ^au Xp]/׼R,\-/0{ lTdE RLȿZ9= ) 4 :tuc[H|#.ԁq vsAKe5]E>s̫9w ; ŘU2P̮m#@P`X@[ j0G Ŧyo\Nea4슽vaHh\R\Jz ݴBdkm è2xu)6-VK//2mP3d#]$19o> 4o|)fa^Wj`FX;̙Z7 ^1)j6аU+;hHtkd[ \PtzMP&ƍ%aUC$GgjD@ EqTLtYAU&`b+*M Ei:.')% Ng틺®D%tjFB"JXkz)MPh1 1SRžPa^?'T`Y}S2\S)-$nm#ڰw7 "'?I ZAYBF9gxPQTpTo5&8ZE6ICS+"6ju x;#a(uBD C$ S-E/`5CB'~;XX^R+R}i"C7aEC{Do\Љ%Hޒ U^ {o SaV3Ҡ%ް`Tk7 Apj:gBi]Y&6ʨ_-iH )e>T6RcOE\dy px>X> $`B8`: 44+Ŕ6VI:" su!raH#GJxA34C`QȂ)fl iq~&aDe ěhЯ\|<՚׬҉(%lF,g, ユ>1 Ԋu b@_}QI5p0slA0_*ȡtxFuQB~5,#"%(l=I t8vsx7e#ʢJ1E %lT)D3MT{+FcJNG ˱U*:ɄXcB'X[; V~1%2M}`@!"*l|'JxY;VfH[M}j-Sp6S"_Y.xUNjCID'*[a`'ZQD{p)AB6 (viYq;&(껹QX5qDF0,!m'y=e Vߣe5sԬwnt)CjXÿNX?YsO͠VΠâ<^C&~4B)686vPN:Y\9tGa]Cxiߺl:y 28XÆY>)8,h ! g(^-ywq:RvD"T1qn$+!Y s*&8^[S6'k=buE Xi/'dk#S[L d=܏`,&bkJ_Q!, FAaH`Q8Z:wi% 3Y,uF};~wOlM>veu|,{VXDS+K֞Qap&pd0woe8(Z٤SrpO;.:Y3QIN6!byd, NLk},]q},э3ֱ}l}S}?ڠS޴Q`66*j96Vy&hcD 8m,pBX6En\} {3buȩ%J٘Q̎. nؼw65,ܠyb;C]Xoϗ &"[1խ%p(Gc;ܚXxqaw6Vpl O}PL}׶q 4hBk ?YHչ J6/F6uӈʹṂKG#+qW{ 8;XeV~zx}lS7s>VoXS+ 'Sk=:2>X݊ɰX5F|[jl:c,]:~1Ds~3jگT.1 yMD.(=ࣜ!%,a9pt`.{Ux:Xb$^\\7kVG/'; f8VWhe^a?V8㐢VA9&`z]sdo`a[xw3w7i<=qڗih?oYǭw׿^Ndv IHv/k2=I5y-vzB-0$ޅJ$mcUuWA;`|ہh)V>NweC.OuCQ~4 Ӎbx+l&ϸ#uޡpdyO<:OxY8o G~rq D5&r\W6ڎBj(Fr6QwqJ<ˈlr,^| WyeFj'3KJd2xTg؎N8h:< ٓf zuCNgpdiG&WﺢNxanD\N'zmf'$i&!i4[{F`Q0R+QyCA$Cӣ9$ݏχXrRlO.Pf3S×Lax&tiuy F$1Iy, jcI d$P9lqtfŇ'3N;2=ߴt UU4oLr>r2Y_ mtԱ}'X>*5+:xt::{Di3Yz=IC-?١qX]{&=(VX8eYt4밎Mn'ޞUU=_gA {Jg&:MQ>qu_z^!zϞT9Dɟ㳨7> _;|g':Mo=WŞT棉N?g=?񈳟/y-B[)ˇ{OH녘g7}b";_٤Pvu>|5Mat+Yҏv6}&lȇtƢha[mrfxH_]X{ ;WcڱLRw=pw&~3nW3ꇋ>ջjSau徟5_貓zޟqvt-⻞&GˑM4ݚ#K9+>y'G|iG%U͑wr$-G'GN:ȳ޷gy'iGyu8NUtֳ#' yR|uY3ΎԭuZÓ:H~'gŇ'Ozޟɛ<ɦ/OG׫Ӄśk$=V^]{UDB 2x#ֳg񔜪&h-⡯/DOo1[AcrbNQ~f/#aŨ97߾񧏿ǏUAsjz]'-KQ p~јpOJq59e?SE endstream endobj 1 0 obj <> endobj 2 0 obj <> endobj 3 0 obj <> endobj 4 0 obj <> endobj 5 0 obj <>stream 2019-02-06T10:55:31+05:30 2019-02-06T10:55:19+05:30 2019-02-06T10:55:31+05:30 TeX application/pdf uuid:f57a17c6-3476-4290-baab-143428d340db uuid:c5b12d23-1ffc-4722-a275-251b94347174 pdfTeX-1.40.14 endstream endobj 6 0 obj <> endobj xref 0 7 0000000000 65535 f 0000022490 00000 n 0000023681 00000 n 0000023769 00000 n 0000023845 00000 n 0000023897 00000 n 0000027299 00000 n trailer <> startxref 116 %%EOF 6 0 obj <> endobj 8 0 obj <> endobj 10 0 obj <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]>>/Type/Page>> endobj 149 0 obj <>stream 2019-02-06T10:55:41+05:30 2019-02-06T10:55:19+05:30 2019-02-06T10:55:41+05:30 TeX application/pdf uuid:f57a17c6-3476-4290-baab-143428d340db uuid:8944194a-96fd-4021-96d3-8bf6e1e0b307 pdfTeX-1.40.14 endstream endobj xref 0 1 0000000004 00000 f 6 1 0000027624 00000 n 8 1 0000027753 00000 n 10 1 0000027830 00000 n 149 1 0000028056 00000 n trailer <<6F9122CC1631BC428E0F264A602BFA00>]/Prev 116 >> startxref 31460 %%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.