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Title: THE JET/COUNTERJET INFRARED SYMMETRY OF HH 34 AND THE SIZE OF THE JET FORMATION REGION

Abstract

We present new Spitzer IRAC images of the HH 34 outflow. These are the first images that detect both the knots along the southern jet and the northern counterjet (the counterjet knots were only detected previously in a long-slit spectrum). This result removes the problem of the apparent coexistence of a large-scale symmetry (at distances of up to {approx}1 pc) and a complete lack of symmetry close to the source (at distances of {approx}10{sup 17} cm) for this outflow. We present a quantitative evaluation of the newly found symmetry between the HH 34 jet and counterjet, and show that the observed degree of symmetry implies that the jet production region has a characteristic size <2.8 AU. This is the strongest constraint yet derived for the size of the region in which HH jets are produced.

Authors:
 [1]; ;  [2];  [3];  [4]
  1. Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Ap. 70-543, 04510 D.F. (Mexico)
  2. SPITZER Science Center, California Institute of Technology, CA 91125 (United States)
  3. Astronomisches Rechen-Institut Zentrum fuer Astronomie der Universitaet Heidelberg, Moenchhofstr. 12-14, 69120 Heidelberg (Germany)
  4. Jet propulsion Laboratory, California Institute of Technology, MS 183-900, 4800 Oak Grove Drive, Pasadena, CA 91109 (United States)
Publication Date:
OSTI Identifier:
21560426
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 730; Journal Issue: 2; Other Information: DOI: 10.1088/2041-8205/730/2/L17; Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; HERBIG-HARO OBJECTS; IMAGES; JETS; STARS; SYMMETRY

Citation Formats

Raga, A C, Noriega-Crespo, A, Carey, S J, Lora, V, and Stapelfeldt, K R. THE JET/COUNTERJET INFRARED SYMMETRY OF HH 34 AND THE SIZE OF THE JET FORMATION REGION. United States: N. p., 2011. Web. doi:10.1088/2041-8205/730/2/L17.
Raga, A C, Noriega-Crespo, A, Carey, S J, Lora, V, & Stapelfeldt, K R. THE JET/COUNTERJET INFRARED SYMMETRY OF HH 34 AND THE SIZE OF THE JET FORMATION REGION. United States. https://doi.org/10.1088/2041-8205/730/2/L17
Raga, A C, Noriega-Crespo, A, Carey, S J, Lora, V, and Stapelfeldt, K R. 2011. "THE JET/COUNTERJET INFRARED SYMMETRY OF HH 34 AND THE SIZE OF THE JET FORMATION REGION". United States. https://doi.org/10.1088/2041-8205/730/2/L17.
@article{osti_21560426,
title = {THE JET/COUNTERJET INFRARED SYMMETRY OF HH 34 AND THE SIZE OF THE JET FORMATION REGION},
author = {Raga, A C and Noriega-Crespo, A and Carey, S J and Lora, V and Stapelfeldt, K R},
abstractNote = {We present new Spitzer IRAC images of the HH 34 outflow. These are the first images that detect both the knots along the southern jet and the northern counterjet (the counterjet knots were only detected previously in a long-slit spectrum). This result removes the problem of the apparent coexistence of a large-scale symmetry (at distances of up to {approx}1 pc) and a complete lack of symmetry close to the source (at distances of {approx}10{sup 17} cm) for this outflow. We present a quantitative evaluation of the newly found symmetry between the HH 34 jet and counterjet, and show that the observed degree of symmetry implies that the jet production region has a characteristic size <2.8 AU. This is the strongest constraint yet derived for the size of the region in which HH jets are produced.},
doi = {10.1088/2041-8205/730/2/L17},
url = {https://www.osti.gov/biblio/21560426}, journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 2,
volume = 730,
place = {United States},
year = {Fri Apr 01 00:00:00 EDT 2011},
month = {Fri Apr 01 00:00:00 EDT 2011}
}