Partially Ionized Zone in Orion

Bibcode
1998larm.confE..71P
Peimbert, M.; Esteban, C.; Torres-Peimbert, S.
Bibliographical reference

"IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 1998, Eds: Aguilar, A.; Carraminana, A.; to be printed in Revista Mexicana de Astronomia y Astrofisica Serie de Conferencias."

Advertised on:
11
1998
Number of authors
3
IAC number of authors
1
Citations
0
Refereed citations
0
Description
We report the first reliable measurement of the nebular [OI] 5577AA emission line in the Orion nebula. The use of diagnostic diagrams using the nebular [OI] and [NI] lines and the comparison with available photoionization models, indicate that the bulk of the nebular emission of the neutral ionic species in the Orion nebula is produced in regions of low to moderate electron densities (10^3 -- 10^5 cm^-3) and electron temperatures of about 10000 K. This result is in disagreement with previous results presented in favor of very high-density regions in the partially ionized zone of the Orion nebula. The absence of such high-density zones has important consequences on the conditions where the [FeII}] emission is produced.
Type
Non-refereed

It may interest you

  • Non-refereed
    Study of basaltic asteroids through their phase curves
    Introduction Classified as type-V, the basaltic asteroids of the Main Belt (MB), for the most part, are connected to Vesta's dynamic family. However, since the discovery of the V-type asteroid (1459) Magnya in the outer MB, several new asteroids have been found in different regions, including V-types from inner regions not belonging to the Vesta
    Arcoverde, Plicida et al.

    Advertised on:

    9
    2024
    Bibcode
    2024EPSC...17..999A
    Citations
    0
  • Non-refereed
    NIRPS near-infrared spectrograph: AITV phase at ESO3.6m/La Silla
    NIRPS is a fiber-fed AO nIR spectrograph working simultaneously with HARPS at the La Silla-ESO 3.6m telescope. The cryogenic spectrograph operating at 75K employs a cross-dispersed echelle grating (R4), covering a wavelength range of 0.98-1.80 microns in a single image using a Teledyne Hawaii-4RG infrared detector. In early 2022, the NIRPS
    Malo, Lison et al.

    Advertised on:

    7
    2024
    Bibcode
    2024SPIE13096E..46M
    Citations
    0
  • Non-refereed
    Transport, handling, and integration of the adaptive optics system for GTC: from the laboratory to the telescope
    The Gran Telescopio de Canarias Adaptive Optics System (GTCAO) is currently in its commissioning phase at Roque de Los Muchachos Observatory (ORM). The GTCAO is a single-conjugated post-focal system equipped with a Shack- Hartmann Wavefront Sensor (WFS) and a Deformable Mirror (DM) conjugated to the pupil, achieving a Strehl Ratio of 65% in the K
    González Carretero, Eduardo D. et al.

    Advertised on:

    7
    2024
    Bibcode
    2024SPIE13096E..96G
    Citations
    0