Exploring the dust content of galactic haloes with Herschel III. NGC 891
Exploring the dust content of galactic haloes with Herschel III. NGC 891
复制标题
与赫歇尔三号一起探索银河晕的尘埃含量。
DOI:
10.1093/mnras/staa3583
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发表时间:
2021
影响因子:
4.8
通讯作者:
Engelbracht, C
中科院分区:
文献类型:
--
作者:
Yoon, J H;Martin, Crystal L;Veilleux, S;Meléndez, M;Mueller, T;Gordon, K D;Cecil, G;Bland-Hawthorn, J;Engelbracht, C
We present deep far-infrared observations of the nearby edge-on galaxy NGC 891 obtained with theHerschel Space Observatoryand theSpitzer Space Telescope. The maps confirm the detection of thermal emission from the inner circumgalactic medium (halo) and spatially resolve a dusty superbubble and a dust spur (filament). The dust temperature of the halo component is lower than that of the disc but increases across a region of diameter ≈8.0 kpc extending at least 7.7 kpc vertically from one side of the disc, a region we call a superbubble because of its association with thermal X-ray emission and a minimum in the synchrotron scale height. This outflow is breaking through the thick disc and developing into a galactic wind, which is of particular interest because NGC 891 is not considered a starburst galaxy; the star formation rate surface density, 0.03 M⊙yr−1kpc−2, and gas fraction, justin the inner disc, indicate the threshold for wind formation is lower than previous work has suggested. We conclude that the star formation surface density is sufficient for superbubble blowout into the halo, but the cosmic ray electrons may play a critical role in determining whether this outflow develops into a fountain or escapes from the gravitational potential. The high dust-to-gas ratio in the dust spur suggests the material was pulled out of NGC 891 through the collision of a minihalo with the disc of NGC 891. We conclude that NGC 891 offers an example of both feedback and satellite interactions transporting dust into the halo of a typical galaxy.
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DOI:
10.3847/1538-4357/ab97b9
发表时间:
2020
期刊:
The Astrophysical Journal
影响因子:
--
作者:
Das, Sanskriti;Sardone, Amy;Leroy, Adam K.;Mathur, Smita;Gallagher, Molly;Pingel, Nickolas M.;Pisano, D. J.;Heald, George
通讯作者:
Heald, George
DOI:
10.1088/0004-637x/758/2/135
发表时间:
2012
期刊:
The Astrophysical Journal
影响因子:
--
作者:
K. Kornei;A. Shapley;C. Martin;A. Coil;J. Lotz;D. Schiminovich;K. Bundy;K. Noeske
通讯作者:
K. Noeske
影响因子:
3.5
作者:
C. Engelbracht;M. Blaylock;Kate Y. L. Su;Jeonghee Rho;G. Rieke;J. Muzerolle;D. Padgett;D. Hines;K. D. Gordon;Dario Fadda;A. Noriega-Crespo;D. Kelly;W. Latter;J. Hinz;K. Misselt;J. Morrison;J. Stansberry;D. Shupe;S. Stolovy;W. Wheaton;E. Young;G. Neugebauer;Stefanie Wachter;P. Pérez-González;P. Pérez-González;D. Frayer;F. Marleau
通讯作者:
C. Engelbracht;M. Blaylock;Kate Y. L. Su;Jeonghee Rho;G. Rieke;J. Muzerolle;D. Padgett;D. Hines;K. D. Gordon;Dario Fadda;A. Noriega-Crespo;D. Kelly;W. Latter;J. Hinz;K. Misselt;J. Morrison;J. Stansberry;D. Shupe;S. Stolovy;W. Wheaton;E. Young;G. Neugebauer;Stefanie Wachter;P. Pérez-González;P. Pérez-González;D. Frayer;F. Marleau
影响因子:
3.7
作者:
J. Howk;B. Savage
通讯作者:
J. Howk;B. Savage
影响因子:
6.5
作者:
S. Bianchi;E. Xilouris
通讯作者:
E. Xilouris