DETECTION OF MULTIPLE BIPOLAR FLOWS IN NGC 7027 WITH SUBMILLIMETER ARRAY
Artikel i vetenskaplig tidskrift, 2010
Highly collimated multiple bipolar flows are detected with a 3 '' resolution in the HCO+ (J = 3-2) and HCN (J = 3-2) lines in the young planetary nebula NGC 7027 with the Submillimeter Array. The HCO+ and HCN flows coincide in location and velocity with compact and fast CO flows detected with similar to 6 '' resolutions with other millimeter arrays. The equatorial molecular torus of NGC 7027 is captured in HCO+ emission in the present observations. The HCO+ emission also closely follows the H-2 emission, indicating that the present observations probe the photon-dominated region of the molecular envelope of NGC 7027.
molecular
envelope
distance
photodissociation region
hco+
emission
ISM: molecules
kinematics
discovery
evolution
planetary nebulae: individual (NGC 7027)
planetary-nebula ngc-7027
Författare
Z. Y. Huang
Institute of Astrophysics and Astronomy, Academia Sinica Taiwan
National Taiwan University
T. I. Hasegawa
Institute of Astrophysics and Astronomy, Academia Sinica Taiwan
D.-V. Trung
Vietnamese Academy of Science and Technology Institute of Physics and Electronics
Institute of Astrophysics and Astronomy, Academia Sinica Taiwan
S. Kwok
Institute of Astrophysics and Astronomy, Academia Sinica Taiwan
The University of Hong Kong
Sebastien Muller
Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium
N. Hirano
Institute of Astrophysics and Astronomy, Academia Sinica Taiwan
J. Lim
Institute of Astrophysics and Astronomy, Academia Sinica Taiwan
The University of Hong Kong
C. M. Mariappan
Institute of Astrophysics and Astronomy, Academia Sinica Taiwan
Aryabhatta Research Institute of Observational Sciences
A. Lyo
Korea Astronomy and Space Science Institute
Institute of Astrophysics and Astronomy, Academia Sinica Taiwan
Astrophysical Journal
0004-637X (ISSN) 1538-4357 (eISSN)
Vol. 722 1 273-280Ämneskategorier (SSIF 2011)
Astronomi, astrofysik och kosmologi
Fundament
Grundläggande vetenskaper
DOI
10.1088/0004-637X/722/1/273