Evidence for an Accelerating Wind as the Broad‐Line Region in NGC 3516 | Zendy

J. B. Hutchings | Zendy; G. A. Kriss | Zendy; R. F. Green | Zendy; M. S. Brotherton | Zendy; M. E. Kaiser | Zendy; Anuradha Koratkar | Zendy; Wei Zheng | Zendy

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Evidence for an Accelerating Wind as the Broad‐Line Region in NGC 3516

Author(s) -

J. B. Hutchings,

G. A. Kriss,

R. F. Green,

M. S. Brotherton,

M. E. Kaiser,

Anuradha Koratkar,

Wei Zheng

Publication year - 2001

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/322329

Subject(s) - physics , astrophysics , active galactic nucleus , galaxy , ionization , line (geometry) , wavelength , astronomy , emission spectrum , flux (metallurgy) , spectral line , optics , geometry , ion , mathematics , materials science , quantum mechanics , metallurgy

Spectroscopic data in wavelengths 900--3000A have been obtained in a low fluxstate of the nucleus of the Seyfert 1 galaxy NGC 3516. The line profiles show PCygni characteristics, particularly in O VI 1032A, and are compared with datafrom an earlier higher state. The profiles are suggestive of, and consistentwith, an accelerating wind driven by a disk continuum source, in which theionisation radii have changed. This scenario may apply to the formation ofother broad emission lines in AGN.Comment: 16 pages and 4 diagrams; to appear in the Astrophysical Journa

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