An SDSS Sky survey for resolved milky way satellite galaxies. II. High-velocity clouds in the early data release

Beth Willman, Julianne Dalcanton, Željko Ivezić, Donald P. Schneider, Donald G. York

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

In this paper, we limit the stellar content of 13 high-velocity clouds (HVCs; including one compact HVC) using the detection limits of a new survey for resolved Milky Way satellite galaxies in the Sloan Digital Sky Survey Early Data Release (EDR). Our analysis is sensitive to stellar associations within the virial radius of the Milky Way that are up to 50 times fainter than the faintest known Milky Way satellites. Statistically, we find no stellar overdensity associated with any of the clouds. These nondetections suggest lower limits of MH I/LV that range between ∼0.2 and 250, assuming cloud distances of 50 and 300 kpc and using fiducial optical scale lengths of 3′ and 7′. We explore the implication of these nondetections on the origin of the HVCs.

Original languageEnglish (US)
Pages (from-to)2600-2606
Number of pages7
JournalAstronomical Journal
Volume124
Issue number5 1763
DOIs
StatePublished - Nov 1 2002

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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