Highly turbulent gas on GMC scales in NGC 3256, the nearest luminous infrared galaxy
Highly turbulent gas on GMC scales in NGC 3256, the nearest luminous infrared galaxy
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NGC 3256 中 GMC 尺度上的高度湍流气体,NGC 3256 是光度最近的红外星系
DOI:
10.1093/mnras/staa3425
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发表时间:
2020
影响因子:
4.8
通讯作者:
A. Peck
中科院分区:
文献类型:
--
作者:
N. Brunetti;C. Wilson;K. Śliwa;E. Schinnerer;S. Aalto;A. Peck
We present the highest resolution CO (2-1) observations obtained to date (0.25") of NGC 3256 and use them to determine the detailed properties of the molecular interstellar medium in the central 6 kpc of this merger. Distributions of physical quantities are reported from pixel-by-pixel measurements at 55 and 120 pc scales and compared to disc galaxies observed by PHANGS-ALMA. Mass surface densities range from 8 to 5500 M$_{\odot}$ pc$^{-2}$ and velocity dispersions from 10 to 200 km s$^{-1}$. Peak brightness temperatures as large as 37 K are measured, indicating the gas in NGC 3256 may be hotter than all regions in nearby disc galaxies measured by PHANGS-ALMA. Brightness temperatures even surpass those in the overlap region of NGC 4038/9 at the same scales. The majority of the gas appears unbound with median virial parameters of 7 to 19, although external pressure may bind some of the gas. High internal turbulent pressures of 10$^{5}$ to 10$^{10}$ K cm$^{-3}$ are found. Given the lack of significant trends in surface density, brightness temperature, and velocity dispersion with physical scale we argue the molecular gas is made up of a smooth medium down to 55 pc scales, unlike the more structured medium found in the PHANGS-ALMA disc galaxies.
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DOI:
10.3847/1538-4357/ab781c
发表时间:
2020-02
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Jiayi Sun;A. Leroy;E. Ostriker;Annie Hughes;Annie Hughes;E. Rosolowsky;A. Schruba;E. Schinnerer;Guillermo A. Blanc;Guillermo A. Blanc;C. Faesi;J. Kruijssen;S. Meidt;D. Utomo;F. Bigiel;A. Bolatto;M. Chevance;I. Chiang;D. Dale;E. Emsellem;E. Emsellem;S. Glover;K. Grasha;J. Henshaw;C. Herrera;M. Jiménez-Donaire;Janice C. Lee;J. Pety;M. Querejeta;T. Saito;K. Sandstrom;A. Usero
通讯作者:
Jiayi Sun;A. Leroy;E. Ostriker;Annie Hughes;Annie Hughes;E. Rosolowsky;A. Schruba;E. Schinnerer;Guillermo A. Blanc;Guillermo A. Blanc;C. Faesi;J. Kruijssen;S. Meidt;D. Utomo;F. Bigiel;A. Bolatto;M. Chevance;I. Chiang;D. Dale;E. Emsellem;E. Emsellem;S. Glover;K. Grasha;J. Henshaw;C. Herrera;M. Jiménez-Donaire;Janice C. Lee;J. Pety;M. Querejeta;T. Saito;K. Sandstrom;A. Usero
DOI:
10.1088/0004-637x/784/1/3
发表时间:
2014
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Colombo;Hughes;Schinnerer
通讯作者:
Schinnerer
影响因子:
4.8
作者:
D. Cormier;F. Bigiel;M. Jiménez-Donaire;A. Leroy;M. Gallagher;A. Usero;K. Sandstrom;A. Bolatto;A. Hughes;C. Kramer;M. Krumholz;David S. Meier;E. Murphy;J. Pety;E. Rosolowsky;E. Schinnerer;A. Schruba;K. Śliwa;F. Walter
通讯作者:
D. Cormier;F. Bigiel;M. Jiménez-Donaire;A. Leroy;M. Gallagher;A. Usero;K. Sandstrom;A. Bolatto;A. Hughes;C. Kramer;M. Krumholz;David S. Meier;E. Murphy;J. Pety;E. Rosolowsky;E. Schinnerer;A. Schruba;K. Śliwa;F. Walter
DOI:
10.3847/2041-8213/aacf8f
发表时间:
2018
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Utomo, Dyas;Sun, Jiayi;Leroy, Adam K.;Kruijssen, J. M.;Schinnerer, Eva;Schruba, Andreas;Bigiel, Frank;Blanc, Guillermo A.;Chevance, Mélanie;Emsellem, Eric
通讯作者:
Emsellem, Eric
DOI:
10.1088/2041-8205/715/2/l88
发表时间:
2010
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
Johansson;Kotarba;Renaud
通讯作者:
Renaud