UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Balmer Discontinuity Temperatures in the Orion Nebula

Liu, XW; Barlow, MJ; Danziger, IJ; Storey, PJ; (1995) Balmer Discontinuity Temperatures in the Orion Nebula. The Astrophysical Journal Letters , 450 (2) L59-L62. 10.1086/316775. Green open access

[thumbnail of liu_orionbj95.pdf]
Preview
Text
liu_orionbj95.pdf - Published version

Download (210kB) | Preview

Abstract

We have mapped the Balmer discontinuity temperature Te (BJ) along two long-slit positions in the Orion Nebula, using high-quality spectra obtained with the ESO 1.52 m telescope and with the 3.9 m AAT. One slit was oriented north-south and positioned 40” west of Ö1 C Ori. The second slit was oriented east-west, with its eastern end 10" west of Ö1 C Ori, identical to the slit position previously studied by Walter & Dufour (1994). For the NS slit, both the 1.52 m and the AAT data yield a constant temperature of about 9000 K, with variations of only a few hundred K over a total slit length of about 3#5. For the EW-slit, our data reveal two distinct regions of nearly constant temperatures of 8900 and 7200 K, respectively, possibly resulting from two separate H II regions. No evidence is found for the anomalously low temperatures reported by Walter and Dufour for the same region. © 1995, IOP Publishing Ltd.

Type: Article
Title: Balmer Discontinuity Temperatures in the Orion Nebula
Open access status: An open access version is available from UCL Discovery
DOI: 10.1086/316775
Publisher version: https://doi.org/10.1086/316775
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10096167
Downloads since deposit
15Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item