A large-scale, low-frequency murchison widefield array survey of galactic H II regions between 260 < l < 340
Hindson, L
Johnston-Hollitt, M
Hurley-Walker, N
Callingham, JR
Su, H
Morgan, J
Bell, M
Bernardi, G
Bowman, JD
Briggs, F
Cappallo, RJ
Deshpande, AA
Dwarakanath, KS
For, BQ
Gaensler, BM
Greenhill, LJ
Hancock, P
Hazelton, BJ
Kapinska, AD
Kaplan, DL
Lenc, E
Lonsdale, CJ
Mckinley, B
McWhirter, SR
Mitchell, DA
Morales, MF
Morgan, E
Oberoi, D
Offringa, A
Ord, SM
Procopio, P
Prabu, T
Udaya Shankar, N
Srivani, KS
Staveley-Smith, L
Subrahmanyan, R
Tingay, SJ
Wayth, RB
Webster, RL
Williams, A
Williams, CL
Wu, C
Zheng, Q
Bernardi, G
Bowman, JD
Briggs, F
Cappallo, RJ
Deshpande, AA
Dwarakanath, KS
For, BQ
Gaensler, BM
Greenhill, LJ
Hancock, P
Hazelton, BJ
Kapinska, AD
Kaplan, DL
Lenc, E
Lonsdale, CJ
Mckinley, B
McWhirter, SR
Mitchell, DA
Morales, MF
Morgan, E
Oberoi, D
Offringa, A
Ord, SM
Procopio, P
Prabu, T
Udaya Shankar, N
Srivani, KS
Staveley-Smith, L
Subrahmanyan, R
Tingay, SJ
Wayth, RB
Webster, RL
Williams, A
Williams, CL
Wu, C
Zheng, Q
- Publication Type:
- Journal Article
- Citation:
- Publications of the Astronomical Society of Australia, 2016, 33
- Issue Date:
- 2016-05-17
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
| largescale_lowfrequency_murchison_widefield_array_survey_of_galactic_h_ii_regions_between_260_l_340.pdf | Published Version | 1.1 MB |
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© Astronomical Society of Australia 2016. We have compiled a catalogue of H ii regions detected with the Murchison Widefield Array between 72 and 231 MHz. The multiple frequency bands provided by the Murchison Widefield Array allow us identify the characteristic spectrum generated by the thermal Bremsstrahlung process in H ii regions. We detect 306 H ii regions between 260◦ < l < 340◦ and report on the positions, sizes, peak, integrated flux density, and spectral indices of these H ii regions. By identifying the point at which H ii regions transition from the optically thin to thick regime, we derive the physical properties including the electron density, ionised gas mass, and ionising photon flux, towards 61 H ii regions. This catalogue of H ii regions represents the most extensive and uniform low frequency survey of H ii regions in the Galaxy to date.
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