First NH3 detection of the Orion Bar

B. Larsson; R. Liseau; P. Bergman; P. Bernath; J. H. Black; R. S. Booth; V. Buat; C. L. Curry; P. Encrenaz; E. Falgarone; P. Feldman; M. Fich; H. G. Floren; U. Frisk; M. Gerin; E. M. Gregersen; J. Harju; T. Hasegawa; L. E. B. Johansson; S. Kwok; A. Lecacheux; T. Liljestrom; K. Mattila; G. F. Mitchell; L. H. Nordh; M. Olberg; G. Olofsson; L. Pagani; R. Plume; I. Ristorcelli; Aa. Sandqvist; F. v. Scheele; N. F. H. Tothill; K. Volk; C. D. Wilson; A. Hjalmarson

doi:10.1051/0004-6361:20030342

First NH3 detection of the Orion Bar

B. Larsson, R. Liseau, P. Bergman, P. Bernath, J. H. Black, R. S. Booth, V. Buat, C. L. Curry, P. Encrenaz, E. Falgarone, P. Feldman, M. Fich, H. G. Floren, U. Frisk, M. Gerin, E. M. Gregersen, J. Harju, T. Hasegawa, L. E. B. Johansson, S. KwokA. Lecacheux, T. Liljestrom, K. Mattila, G. F. Mitchell, L. H. Nordh, M. Olberg, G. Olofsson, L. Pagani, R. Plume, I. Ristorcelli, Aa. Sandqvist, F. v. Scheele, N. F. H. Tothill, K. Volk, C. D. Wilson, A. Hjalmarson

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Abstract

Odin has successfully observed three regions in the OrionA cloud, i.e. OriKL, OriS and the Orion Bar, in the 572.5 GHz rotational ground state line of ammonia, ortho-NH3 (J,K) = (1,0) = (0,0), and the result for the Orion Bar represents the first detection in an ammonia line. Several velocity components are present in the data. Specifically, the observed line profile from the Orion Bar can be decomposed into two components, which are in agreement with observations in high-J CO lines by Wilson et al. (2001). Using the source model for the Orion Bar by these authors, our Odin observation implies a total ammonia abundance of NH3/H2 = 5 x 10−9.

Original language	English
Pages (from-to)	L69-L72
Number of pages	4
Journal	Astronomy and Astrophysics
Volume	402
Issue number	3
DOIs	https://doi.org/10.1051/0004-6361:20030342
Publication status	Published - 2003

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Larsson, B., Liseau, R., Bergman, P., Bernath, P., Black, J. H., Booth, R. S., Buat, V., Curry, C. L., Encrenaz, P., Falgarone, E., Feldman, P., Fich, M., Floren, H. G., Frisk, U., Gerin, M., Gregersen, E. M., Harju, J., Hasegawa, T., Johansson, L. E. B., ... Hjalmarson, A. (2003). First NH3 detection of the Orion Bar. Astronomy and Astrophysics, 402(3), L69-L72. https://doi.org/10.1051/0004-6361:20030342

@article{e63efae949924138887fc17e86e48f5e,

title = "First NH3 detection of the Orion Bar",

abstract = "Odin has successfully observed three regions in the OrionA cloud, i.e. OriKL, OriS and the Orion Bar, in the 572.5 GHz rotational ground state line of ammonia, ortho-NH3 (J,K) = (1,0) = (0,0), and the result for the Orion Bar represents the first detection in an ammonia line. Several velocity components are present in the data. Specifically, the observed line profile from the Orion Bar can be decomposed into two components, which are in agreement with observations in high-J CO lines by Wilson et al. (2001). Using the source model for the Orion Bar by these authors, our Odin observation implies a total ammonia abundance of NH3/H2 = 5 x 10−9.",

author = "B. Larsson and R. Liseau and P. Bergman and P. Bernath and Black, {J. H.} and Booth, {R. S.} and V. Buat and Curry, {C. L.} and P. Encrenaz and E. Falgarone and P. Feldman and M. Fich and Floren, {H. G.} and U. Frisk and M. Gerin and Gregersen, {E. M.} and J. Harju and T. Hasegawa and Johansson, {L. E. B.} and S. Kwok and A. Lecacheux and T. Liljestrom and K. Mattila and Mitchell, {G. F.} and Nordh, {L. H.} and M. Olberg and G. Olofsson and L. Pagani and R. Plume and I. Ristorcelli and Aa. Sandqvist and Scheele, {F. v.} and Tothill, {N. F. H.} and K. Volk and Wilson, {C. D.} and A. Hjalmarson",

year = "2003",

doi = "10.1051/0004-6361:20030342",

language = "English",

volume = "402",

pages = "L69--L72",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "3",

}

Larsson, B, Liseau, R, Bergman, P, Bernath, P, Black, JH, Booth, RS, Buat, V, Curry, CL, Encrenaz, P, Falgarone, E, Feldman, P, Fich, M, Floren, HG, Frisk, U, Gerin, M, Gregersen, EM, Harju, J, Hasegawa, T, Johansson, LEB, Kwok, S, Lecacheux, A, Liljestrom, T, Mattila, K, Mitchell, GF, Nordh, LH, Olberg, M, Olofsson, G, Pagani, L, Plume, R, Ristorcelli, I, Sandqvist, A, Scheele, FV, Tothill, NFH, Volk, K, Wilson, CD & Hjalmarson, A 2003, 'First NH3 detection of the Orion Bar', Astronomy and Astrophysics, vol. 402, no. 3, pp. L69-L72. https://doi.org/10.1051/0004-6361:20030342

TY - JOUR

T1 - First NH3 detection of the Orion Bar

AU - Larsson, B.

AU - Liseau, R.

AU - Bergman, P.

AU - Bernath, P.

AU - Black, J. H.

AU - Booth, R. S.

AU - Buat, V.

AU - Curry, C. L.

AU - Encrenaz, P.

AU - Falgarone, E.

AU - Feldman, P.

AU - Fich, M.

AU - Floren, H. G.

AU - Frisk, U.

AU - Gerin, M.

AU - Gregersen, E. M.

AU - Harju, J.

AU - Hasegawa, T.

AU - Johansson, L. E. B.

AU - Kwok, S.

AU - Lecacheux, A.

AU - Liljestrom, T.

AU - Mattila, K.

AU - Mitchell, G. F.

AU - Nordh, L. H.

AU - Olberg, M.

AU - Olofsson, G.

AU - Pagani, L.

AU - Plume, R.

AU - Ristorcelli, I.

AU - Sandqvist, Aa.

AU - Scheele, F. v.

AU - Tothill, N. F. H.

AU - Volk, K.

AU - Wilson, C. D.

AU - Hjalmarson, A.

PY - 2003

Y1 - 2003

N2 - Odin has successfully observed three regions in the OrionA cloud, i.e. OriKL, OriS and the Orion Bar, in the 572.5 GHz rotational ground state line of ammonia, ortho-NH3 (J,K) = (1,0) = (0,0), and the result for the Orion Bar represents the first detection in an ammonia line. Several velocity components are present in the data. Specifically, the observed line profile from the Orion Bar can be decomposed into two components, which are in agreement with observations in high-J CO lines by Wilson et al. (2001). Using the source model for the Orion Bar by these authors, our Odin observation implies a total ammonia abundance of NH3/H2 = 5 x 10−9.

AB - Odin has successfully observed three regions in the OrionA cloud, i.e. OriKL, OriS and the Orion Bar, in the 572.5 GHz rotational ground state line of ammonia, ortho-NH3 (J,K) = (1,0) = (0,0), and the result for the Orion Bar represents the first detection in an ammonia line. Several velocity components are present in the data. Specifically, the observed line profile from the Orion Bar can be decomposed into two components, which are in agreement with observations in high-J CO lines by Wilson et al. (2001). Using the source model for the Orion Bar by these authors, our Odin observation implies a total ammonia abundance of NH3/H2 = 5 x 10−9.

UR - http://hdl.handle.net/1959.7/uws:23280

U2 - 10.1051/0004-6361:20030342

DO - 10.1051/0004-6361:20030342

M3 - Article

SN - 0004-6361

VL - 402

SP - L69-L72

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 3

ER -

First NH3 detection of the Orion Bar

Abstract

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