Physical Conditions in Low-Ionization Regions of the Orion Nebula | Zendy

J. A. Baldwin | Zendy; Arlin Crotts | Zendy; R. J. Dufour | Zendy; G. J. Ferland | Zendy; Steve Heathcote | Zendy; J. J. Hester | Zendy; K. T. Korista | Zendy; P. G. Martin | Zendy; C. R. O’dell | Zendy; R. H. Rubin | Zendy; A. G. G. M. Tielens | Zendy; D. A. Verner | Zendy; E. M. Verner | Zendy; Donald K. Walter | Zendy; Wen Zhao | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Physical Conditions in Low-Ionization Regions of the Orion Nebula

Author(s) -

J. A. Baldwin,

Arlin Crotts,

R. J. Dufour,

G. J. Ferland,

Steve Heathcote,

J. J. Hester,

K. T. Korista,

P. G. Martin,

C. R. O’dell,

R. H. Rubin,

A. G. G. M. Tielens,

D. A. Verner,

E. M. Verner,

Donald K. Walter,

Wen Zhao

Publication year - 1996

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 - 10.1086/310245

Subject(s) - orion nebula , ionization , physics , electron density , astrophysics , nebula , emission spectrum , electron , spectral line , ion , atomic physics , astronomy , stars , nuclear physics , quantum mechanics

We reexamine the spectroscopic underpinnings of recent suggestions that [O I]and [Fe II] lines from the Orion H II region are produced in gas where theiron-carrying grains have been destroyed and the electron density issurprisingly high. Our new observations show that previous detections of [O I]5577 were dominated by telluric emission. Our limits are consistent with amoderate density (10^4 cm^{-3}) photoionized gas. We show that a previouslyproposed model of the Orion H II region reproduces the observed [O I] and [FeII] spectrum. These lines are fully consistent with formation in a dusty regionof moderate density.Comment: 12 pages, latex (aaspp4.sty), 1 figure. To appear in ApJ Letter

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research