Effect of Streaming Motion of Baryons Relative to Dark Matter on the Formation of the First Stars

dc.contributor.utaustinauthorStacy, Athenaen_US
dc.contributor.utaustinauthorBromm, Volkeren_US
dc.creatorStacy, Athenaen_US
dc.creatorBromm, Volkeren_US
dc.creatorLoeb, Abrahamen_US
dc.date.accessioned2016-10-28T19:37:58Z
dc.date.available2016-10-28T19:37:58Z
dc.date.issued2011-03en_US
dc.description.abstractWe evaluate the effect of a supersonic relative velocity between the baryons and dark matter on the thermal and density evolution of the first gas clouds at z less than or similar to 50. Through a series of cosmological simulations, initialized at z(i) = 100 with a range of relative streaming velocities and minihalo Formation redshifts, we find that the typical streaming velocities will have little effect on the gas evolution. Once the collapse begins, the subsequent evolution of the gas will be nearly indistinguishable from the case of no streaming, and star Formation will still proceed in the same way, with no change in the characteristic Pop III stellar masses. Reionization is expected to be dominated by halo masses of greater than or similar to 10(8)M(circle dot), for which the effect of streaming should be negligible.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipNSF AST-0708795, AST-1009928en_US
dc.description.sponsorshipNASA ATFP NNX08AL43G, NNX09AJ33Gen_US
dc.identifierdoi:10.15781/T2R785R84
dc.identifier.citationStacy, Athena, Volker Bromm, and Abraham Loeb. "Effect of streaming motion of baryons relative to dark matter on the formation of the first stars." The Astrophysical Journal Letters, Vol. 730, No. 1 (Mar., 2011): L1.en_US
dc.identifier.doi10.1088/2041-8205/730/1/l1en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/2152/43093
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journal Lettersen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectcosmology: theoryen_US
dc.subjectearly universeen_US
dc.subjectgalaxies: Formationen_US
dc.subjectstars: Formationen_US
dc.subjectchemical enrichmenten_US
dc.subjectsimulationsen_US
dc.subjectgalaxiesen_US
dc.subjectuniverseen_US
dc.subjectobjectsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleEffect of Streaming Motion of Baryons Relative to Dark Matter on the Formation of the First Starsen_US
dc.typeArticleen_US

Access full-text files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
2011_03_Stacy.pdf
Size:
3.15 MB
Format:
Adobe Portable Document Format

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.65 KB
Format:
Plain Text
Description: