Advanced search
1 file | 725.09 KB Add to list

An absence of radio-loud active galactic nuclei in geometrically flat quiescent galaxies : implications for maintenance-mode feedback models

Author
Organization
Abstract
Maintenance-mode feedback from low-accretion-rate active galactic nuclei (AGNs), manifesting itself observationally through radio-loudness, is invoked in all cosmological galaxy formation models as a mechanism that prevents excessive star formation in massive galaxies (M-* greater than or similar to 3 x 10(10) M-circle dot). We demonstrate that at a fixed mass the incidence of radio-loud (RL) AGNs (L > 10(23) W Hz(-1)) identified in the Faint Images of the Radio Sky at Twenty centimeter and NRAO Very Large Array Sky Survey radio surveys among a large sample of quiescent (non-star-forming) galaxies selected from the Sloan Digital Sky Survey is much higher in geometrically round galaxies than in geometrically flat, disk-like galaxies. As found previously, the RL AGN fraction increases steeply with stellar velocity dispersion sigma(*) and stellar mass, but even at a fixed velocity dispersion of 200-250 km s(-1) this fraction increases from 0.3% for flat galaxies (projected axis ratio of q < 0.4) to 5% for round galaxies (q > 0.8). We rule out the hypothesis that this strong trend is due to projection effects in the measured velocity dispersion. The large fraction of RL AGNs in massive, round galaxies is consistent with the hypothesis that such AGNs deposit energy into their hot gaseous halos, preventing cooling and star formation. However, the absence of such AGNs in disk-like quiescent galaxies-most of which are not satellites in massive clusters, raises important questions. Is maintenance-mode feedback a generally valid explanation for quiescence? If so, how does that feedback avoid manifesting at least occasionally as an RL galaxy?
Keywords
BLACK-HOLE MASS, HOST GALAXIES, SKY, COEVOLUTION, LUMINOSITIES, ORIGIN, galaxies: active, galaxies: fundamental parameters, galaxies: star, formation, galaxies: statistics, galaxies: structure

Downloads

  • An Absence of Radio-loud Active Galactic Nuclei in Geometrically Flat Quiescent Galaxies- Implications for Maintenance-mode Feedback Models.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 725.09 KB

Citation

Please use this url to cite or link to this publication:

MLA
Barisic, Ivana et al. “An Absence of Radio-loud Active Galactic Nuclei in Geometrically Flat Quiescent Galaxies : Implications for Maintenance-mode Feedback Models.” ASTROPHYSICAL JOURNAL LETTERS 872.1 (2019): n. pag. Print.
APA
Barisic, I., van der Wel, A., van Houdt, J., Maseda, M. V., Bell, E. F., Bezanson, R., Chang, Y.-Y., et al. (2019). An absence of radio-loud active galactic nuclei in geometrically flat quiescent galaxies : implications for maintenance-mode feedback models. ASTROPHYSICAL JOURNAL LETTERS, 872(1).
Chicago author-date
Barisic, Ivana, Arjen van der Wel, Josha van Houdt, Michael V Maseda, Eric F Bell, Rachel Bezanson, Yu-Yen Chang, Huub Rottgering, Glenn van de Ven, and Po-Feng Wu. 2019. “An Absence of Radio-loud Active Galactic Nuclei in Geometrically Flat Quiescent Galaxies : Implications for Maintenance-mode Feedback Models.” Astrophysical Journal Letters 872 (1).
Chicago author-date (all authors)
Barisic, Ivana, Arjen van der Wel, Josha van Houdt, Michael V Maseda, Eric F Bell, Rachel Bezanson, Yu-Yen Chang, Huub Rottgering, Glenn van de Ven, and Po-Feng Wu. 2019. “An Absence of Radio-loud Active Galactic Nuclei in Geometrically Flat Quiescent Galaxies : Implications for Maintenance-mode Feedback Models.” Astrophysical Journal Letters 872 (1).
Vancouver
1.
Barisic I, van der Wel A, van Houdt J, Maseda MV, Bell EF, Bezanson R, et al. An absence of radio-loud active galactic nuclei in geometrically flat quiescent galaxies : implications for maintenance-mode feedback models. ASTROPHYSICAL JOURNAL LETTERS. 2019;872(1).
IEEE
[1]
I. Barisic et al., “An absence of radio-loud active galactic nuclei in geometrically flat quiescent galaxies : implications for maintenance-mode feedback models,” ASTROPHYSICAL JOURNAL LETTERS, vol. 872, no. 1, 2019.
@article{8620684,
  abstract     = {Maintenance-mode feedback from low-accretion-rate active galactic nuclei (AGNs), manifesting itself observationally through radio-loudness, is invoked in all cosmological galaxy formation models as a mechanism that prevents excessive star formation in massive galaxies (M-* greater than or similar to 3 x 10(10) M-circle dot). We demonstrate that at a fixed mass the incidence of radio-loud (RL) AGNs (L > 10(23) W Hz(-1)) identified in the Faint Images of the Radio Sky at Twenty centimeter and NRAO Very Large Array Sky Survey radio surveys among a large sample of quiescent (non-star-forming) galaxies selected from the Sloan Digital Sky Survey is much higher in geometrically round galaxies than in geometrically flat, disk-like galaxies. As found previously, the RL AGN fraction increases steeply with stellar velocity dispersion sigma(*) and stellar mass, but even at a fixed velocity dispersion of 200-250 km s(-1) this fraction increases from 0.3% for flat galaxies (projected axis ratio of q < 0.4) to 5% for round galaxies (q > 0.8). We rule out the hypothesis that this strong trend is due to projection effects in the measured velocity dispersion. The large fraction of RL AGNs in massive, round galaxies is consistent with the hypothesis that such AGNs deposit energy into their hot gaseous halos, preventing cooling and star formation. However, the absence of such AGNs in disk-like quiescent galaxies-most of which are not satellites in massive clusters, raises important questions. Is maintenance-mode feedback a generally valid explanation for quiescence? If so, how does that feedback avoid manifesting at least occasionally as an RL galaxy?},
  articleno    = {L12},
  author       = {Barisic, Ivana and van der Wel, Arjen and van Houdt, Josha and Maseda, Michael V and Bell, Eric F and Bezanson, Rachel and Chang, Yu-Yen and Rottgering, Huub and van de Ven, Glenn and Wu, Po-Feng},
  issn         = {2041-8205},
  journal      = {ASTROPHYSICAL JOURNAL LETTERS},
  keywords     = {BLACK-HOLE MASS,HOST GALAXIES,SKY,COEVOLUTION,LUMINOSITIES,ORIGIN,galaxies: active,galaxies: fundamental parameters,galaxies: star,formation,galaxies: statistics,galaxies: structure},
  language     = {eng},
  number       = {1},
  pages        = {6},
  title        = {An absence of radio-loud active galactic nuclei in geometrically flat quiescent galaxies : implications for maintenance-mode feedback models},
  url          = {http://dx.doi.org/10.3847/2041-8213/ab03d5},
  volume       = {872},
  year         = {2019},
}

Altmetric
View in Altmetric
Web of Science
Times cited: