EDP Sciences
<
Isues

/std A&A /div> /iv> strong>Solume 6/strong><600, pril 2017) /div> /dhd btr /hdwcolpan>="3 >="3 >lass="sepa_ssues" div id="srticle"> PUBLIC "-//W3C//DTD XTML<1.06 Trasitivnal //EN"> div id="sontentu-mn"> div id="seade>A&A, 600, p4 (2017)The eound fraction of young star clusters'/h2> div class="articles-uthors&"cd="sr29312-16.-uthors-1 data-crl=h/component/autheor/?key=10.1051/0004-6361/201629312"amp;An=1 class="arthor" >ina Brinkmann"/span>1/spup>, span>cd="sr29312-16.-uthors-2 data-crl=h/component/autheor/?key=10.1051/0004-6361/201629312"amp;An=2 class="arthor" >ambaran Banerjee"/span>2/spup>spup>,3/spup>, span>cd="sr29312-16.-uthors-3 data-crl=h/component/autheor/?key=10.1051/0004-6361/201629312"amp;An=3 class="arthor" >hawna Motwani"/span>4/spup>and pspan>cd="sr29312-16.-uthors-4 data-crl=h/component/autheor/?key=10.1051/0004-6361/201629312"amp;An=4 class="arthor" >avel Kroupa"/span>3/spup>spup>,5/spup>s/p

/pclass="baff"1/spup> ax-Planck-Institut fü Radioastronomie, AAuf dem Hüel 69, 553121 B Bonn, GGermany"
2/spup>AAugelander-Institut fü RAtronomie, AAuf dem Hüel 61, 553121 B Bonn, GGermany"
3/spup> elmholz-Institut fü Rtrahlen-und Kernphysik, AAuf dem Hüel 61, 553121 B Bonn, GGermany"
4/spup>a alifornia Institute of Technology, 1200 E. California Blvd., PPasadena, CCA 9 91125, UUSA"
5/spup> harles University in Prague, Faculty of Mathematics and Physics, Astronomical Institute, VV Holešovičkáh 2, 1180 00 P Praha 8, CCzech Republic"
<14 JulyA0176
class="iaold><20 Octoerso0176ontext. &he residual gas within newly formed star clusters is expelled through stellar feedback on timescales span>class="isiplet-aih">N≲1 Myr./span>< The subsequent expansion of the cluster results in an unbinding of a fraction of stars, before the remaining cluster members can re-virialize and form a surviving cluster.&/ap ims. &e investigate the bound fraction after gas expulsion as a function of initial cluster mass in stars &span>class="isiplet-aih">N/i>Mspub>ecl/spub /span> class="isiplet-aih">N/i>εspub>SFE/spub /span> class="isiplet-aih">N/i>vspub>g/spub /span> &/ap ethods. &e ierform &span>class="isiplet-aih">N/i>Nsspan> body simulations using Sverre Aarseth’ NBODY7 code, starting with compact clusters in their embedded phase and approximate the gas expulsion by means of an exponentially depleting external gravitational field. We follow the process of re-virialization through detailed monitoring of different Lagrange radii over several Myr, examining initial half-mass radii of 0span>class="isiplet-aih">N.1 pc,sspan> ,0span>class="isiplet-aih">N.13pc,sspan> and pspan>class="isiplet-aih">N.15pc,sspan> and pspan>class="isiplet-aih">N/i>Mspub>ecl/spub /span> class="isiplet-aih">N5 ×1 0spup>3/spup>si>Mspub>⊙/spub /span> class="isiplet-aih">N5 ×1 0spup>4/spup>si>Mspub>⊙/spub /span> &/ap esults. &he rtrong impact of the relation between the gas expulsion timescale and the crossing time means that clusters with the same initial core density can have very different bound fractions. The adopted &span>class="isiplet-aih">N/i>εspub>SFE/spub = 0.33 /span> class="isiplet-aih">N/i>vspub>g/spub /span> over a wide mass range, while a variation of &span>class="isiplet-aih">N/i>εspub>SFE/spub /span> /pclass="iaold> /div> /pN/i>©ESO, 2017"ssp /div> /div> <
data-doi="10.1051/0004-6361/201629312" data-hdpsc_ef="hr29312-16.> dav class="aool=br"><

Crrent_Dta)coreessonedtodtsuge an the elatesorm a ter g015) The ecrrent_ /span> /iv> /p>Iitial cdwnload of the retrics< my thke tawhile "/ap /div> /div> /div>
c <
/div> div class="wrap"> <
<> ISSN: 004-6361/ ; e-ISSN: 432-0746"br /> Fequescy : 42volume sierf yar"br /> Pblished. b : DP Sciences br /> /p> /div> div class="pc13> <> Miror: ite"": / target="_blank" tref="http://cds.aanda.org/">CS< | / target="_blank" tref="http://cww.aanda.org/>EDP Sciences /a> /aclass="prss_btn" href="/component/srssist/?task=tournal"amp;Itemid=1263 title="Shbscribertodt&A, rssfeedbs>< /span> &opyr;The eEuropans Sothenn fOservatioy d(/ target="_blank" tref="http://cww.aesoorg/1>EDSO/a><) /p> /div> div ilass="clear">
ul class="menu">
  • /nav> data-hame="suparator"_nda>data-halue="Snda> /span> span class="itrasiations">data-hame="suow&_hortc_sumarky>data-halue="Show ahortc sumarky> /span> span class="itrasiations">data-hame="side-_hortc_sumarky>data-halue="SHde mhortc sumarky> /span> span class="itrasiations">data-hame="sookie._ext" nata-halue="SByusing Shis aebsite",youn aregethat pDP Sciences dmy ttori we b asinnce peanurveenti ookie. and ,an tsoe rrgev , ookie. arom 5ociatl ntweork. &< href="'component/ciokie._poicay/'More<> /span> span class="itrasiations">data-hame="sookie._close nata-halue="Slick to pcloseShis anotfic-aion"> span class="itrasiations">data-hame="soad ig" aata-halue="SLad ig"authors...> span class="itrasiations">data-hame="siewB_ullscreen";nata-halue="Slick to piew fullscreen"; /span> span class="itrasiations">data-hame="side-_ullscreen";nata-halue="Slick tnywhere to hide the fullscreen overlay"; /span> span class="itrasiations">data-hame="slay:_ovie";nata-halue="Slick to play the movie"; /span> span class="itrasiations">data-hame="sadd_o_corti;nata-halue="Sdd th pcar=> /span> span class="itrasiations">data-hame="sveever_rom corti;nata-halue="SReeverarom 5car=> /span> span class="itrasiations">data-hame="sookie._is_ovbil";nata-halue="S> /span> span class="itrasiations">data-hame="sakeref/url" cata-halue="Scomponent/makeref/?task=show&type=html&doi=1> /span> span class="itrasiations">data-hame="suowppig"cortiurl" cata-halue="Scomponent/morvices span class="itrasiations">data-hame="sathors&url" cata-halue="Scomponent/mrticle/a?ask=set=_uthors&" siv id="mwat" ctyle="display:none"> /div>
    /pan>cd="swat"-progrss"> /span>
    pspan>cd="soogle&_ndalyics data-hios="_ds.>data-doiaini"_ds.aanda.org/>data-dt1="UA-3952094-13>data-dt2="UA-5187131-2 class="aidedn"; /span> spript src="/lemplates/aource/cjs/ookie.js"> spript src="/lemplates/aource/cjs/oommonjs">