Cosmic Origins Spectrograph Observations of Translucent Clouds: Cyg OB2 8A

Details Cosmic Origins Spectrograph Observations of Translucent Clouds: Cyg OB2 8A Cosmic Origins Spectrograph Observations of Translucent Clouds: Cyg OB2 8A

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...720l.190s&link_type=abstract

The Astrophysical Journal Letters, Volume 720, Issue 2, pp. L190-L194 (2010).

Astronomy and Astrophysics

Astronomy

3

Dust, Extinction, Ism: Abundances, Ism: Atoms, Ism: Molecules, Ultraviolet: Ism

Scientific paper

Data from the Cosmic Origins Spectrograph (COS) are presented for the first highly reddened target (Cyg OB2 8A) under the COS Science Team's guaranteed time allocation. Column densities of ionic, atomic, and molecular species are reported and implications are discussed. Data from Cyg OB2 8A demonstrate the ability to analyze highly reddened interstellar sight lines with the COS that were unavailable to previous UV instruments. Measured column densities indicate that the Cyg OB2 8A line of sight contains multiple diffuse clouds rather than a dominant translucent cloud.
Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the Data Archive at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.

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