| FRISBIE, Rachel L. S, Megan DONAHUE, G. Mark VOIT, Kiran LAKHCHAURA, Norbert WERNER a Ming SUN. Relationships between Stellar Velocity Dispersion and the Atmospheres of Early-type Galaxies. Astrophysical Journal. IOP Publishing Ltd, 2022, roč. 926, č. 2, s. 1-12. ISSN 0004-637X. Dostupné z: https://dx.doi.org/10.3847/1538-4357/ac4604. |
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@article{1842478,
author = {Frisbie, Rachel L. S and Donahue, Megan and Voit, G. Mark and Lakhchaura, Kiran and Werner, Norbert and Sun, Ming},
article_number = {2},
doi = {http://dx.doi.org/10.3847/1538-4357/ac4604},
keywords = {Giant elliptical galaxies; Galactic winds; AGN host galaxies; X-ray astronomy; Circumgalactic medium},
language = {eng},
issn = {0004-637X},
journal = {Astrophysical Journal},
title = {Relationships between Stellar Velocity Dispersion and the Atmospheres of Early-type Galaxies},
url = {https://iopscience.iop.org/article/10.3847/1538-4357/ac4604},
volume = {926},
year = {2022}
}
TY - JOUR
ID - 1842478
AU - Frisbie, Rachel L. S - Donahue, Megan - Voit, G. Mark - Lakhchaura, Kiran - Werner, Norbert - Sun, Ming
PY - 2022
TI - Relationships between Stellar Velocity Dispersion and the Atmospheres of Early-type Galaxies
JF - Astrophysical Journal
VL - 926
IS - 2
SP - 1-12
EP - 1-12
PB - IOP Publishing Ltd
SN - 0004637X
KW - Giant elliptical galaxies
KW - Galactic winds
KW - AGN host galaxies
KW - X-ray astronomy
KW - Circumgalactic medium
UR - https://iopscience.iop.org/article/10.3847/1538-4357/ac4604
N2 - The Voit et al. black hole feedback valve model predicts relationships between stellar velocity dispersion and atmospheric structure among massive early-type galaxies. In this work, we test that model using the Chandra archival sample of 49 early-type galaxies from Lakhchaura et al. We consider relationships between stellar velocity dispersion and entropy profile slope, multiphase gas extent, and the ratio of cooling time to freefall time. We also define subsamples based on data quality and entropy profile properties that clarify those relationships and enable more specific tests of the model predictions. We find that the atmospheric properties of early-type galaxies generally align with the predictions of the Voit et al. model, in that galaxies with a greater stellar velocity dispersion tend to have radial profiles of pressure, gas density, and entropy with steeper slopes and less extended multiphase gas. Quantitative agreement with the model predictions improves when the sample is restricted to have low central entropy and a stellar velocity dispersion of between 220 and 300 km s(-1).
ER -
FRISBIE, Rachel L. S, Megan DONAHUE, G. Mark VOIT, Kiran LAKHCHAURA, Norbert WERNER a Ming SUN. Relationships between Stellar Velocity Dispersion and the Atmospheres of Early-type Galaxies. \textit{Astrophysical Journal}. IOP Publishing Ltd, 2022, roč.~926, č.~2, s.~1-12. ISSN~0004-637X. Dostupné z: https://dx.doi.org/10.3847/1538-4357/ac4604.
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