Distances To Galactic High-Velocity Clouds: Complex C

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dc.contributor.utaustinauthorBarentine, John C.en_US
dc.creatorWakker, B. P.en_US
dc.creatorYork, D. G.en_US
dc.creatorHowk, J. C.en_US
dc.creatorBarentine, John C.en_US
dc.creatorWilhelm, R.en_US
dc.creatorPeletier, R. F.en_US
dc.creatorvan Woerden, H.en_US
dc.creatorBeers, Timothy C.en_US
dc.creatorIvezic, Z.en_US
dc.creatorRichter, P.en_US
dc.creatorSchwarz, U. J.en_US
dc.date.accessioned2016-04-28T19:40:47Z
dc.date.available2016-04-28T19:40:47Z
dc.date.issued2007-12en
dc.description.abstractWe report the first determination of a distance bracket for the high- velocity cloud (HVC) complex C. Combined with previous measurements showing that this cloud has a metallicity of 0.15 times solar, these results provide ample evidence that complex C traces the continuing accretion of intergalactic gas falling onto the Milky Way. Accounting for both neutral and ionized hydrogen as well as He, the distance bracket implies a mass of (3-14) x 10(6) M-circle dot, and the complex represents a mass inflow of 0.1-0.25 M-circle dot yr(-1). We base our distance bracket on the detection of Ca II absorption in the spectrum of the blue horizontal branch (BHB) star SDSS J120404.78 + 623345.6, in combination with a significant nondetection toward the BHB star BS 16034-0114. These results set a strong distance bracket of 3.7-11.2 kpc on the distance to complex C. A more weakly supported lower limit of 6.7 kpc may be derived from the spectrum of the BHB star BS 16079-0017.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipNSF AST 06-07154, AST 04-06784, PHY 02-16783\JINAen_US
dc.identifierdoi:10.15781/T2GC06
dc.identifier.Filename2007_12_galactichighvelocity.pdfen_US
dc.identifier.citationWakker, B. P., D. G. York, J. C. Howk, J. C. Barentine, R. Wilhelm, R. F. Peletier, H. van Woerden et al. "Distances to galactic high-velocity clouds: complex C." The Astrophysical Journal Letters, Vol. 670, No. 2 (Dec., 2007): L113.en_US
dc.identifier.doi10.1086/524222en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/35086
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journalen_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.subjectgalaxy : evolutionen_US
dc.subjectgalaxy : generalen_US
dc.subjectgalaxy : haloen_US
dc.subjectgalaxy : structureen_US
dc.subjectism : cloudsen_US
dc.subjectstars : distancesen_US
dc.subjectdigital sky surveyen_US
dc.subjectdata releaseen_US
dc.subjecthorizontal-branchen_US
dc.subjectmilky-wayen_US
dc.subjectgalaxyen_US
dc.subjectstarsen_US
dc.subjectmetallicitiesen_US
dc.subjecttelescopeen_US
dc.subjectabundanceen_US
dc.subjecthaloen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleDistances To Galactic High-Velocity Clouds: Complex Cen_US
dc.typeArticleen_US

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