Upper Limits on O VI Emission From Voyager Observations

dc.contributor.author	Murthy, J
dc.contributor.author	Henry, R. C
dc.contributor.author	Shelton, R. L
dc.contributor.author	Holberg, J. B
dc.date.accessioned	2008-07-29T04:46:56Z
dc.date.available	2008-07-29T04:46:56Z
dc.date.issued	2001-08
dc.identifier.citation	Astrophysical Journal, Vol. 557, No.1, pp. L47 - L50	en
dc.identifier.issn	004-637X
dc.identifier.uri	http://hdl.handle.net/2248/2922
dc.description.abstract	We have examined 426 Voyager fields distributed across the sky for O VI λλ1032, 1038 emission from the Galactic diffuse interstellar medium. No such emission was detected in any of our observed fields. Our most constraining limit was a 90% confidence upper limit of 2600 photons cm-2 sr-1 s-1 on the doublet emission in the direction (l,b)=(117.3d,50.6d). Combining this with an absorption-line measurement in nearly the same direction allows us to place an upper limit of 0.01 cm-3 on the electron density of the hot gas in this direction. We have placed 90% confidence upper limits of less than or equal to 10,000 photons cm-2 sr-1 s-1 on the O VI emission in 16 of our 426 observations.	en
dc.format.extent	58005 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	American Astronomical Society	en
dc.relation.uri	http://www.journals.uchicago.edu/doi/abs/10.1086/323041	en
dc.subject	Galaxy: Halo	en
dc.subject	ISM: General	en
dc.title	Upper Limits on O VI Emission From Voyager Observations	en
dc.type	Article	en