Radio AGN in spiral galaxies- Authors: Sugata Kaviraj, Enno Middelberg et al.
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zutopian
Radio AGN in spiral galaxies
Authors: Sugata Kaviraj, Stanislav S. Shabala, Adam T. Deller, Enno MiddelbergRadio AGN in the nearby Universe are more likely to be found in galaxies with early-type morphology, the detection rate in spiral or late-type galaxies (LTGs) being around an order of magnitude lower. We combine the mJy Imaging VLBA Exploration at 20cm (mJIVE-20) survey with the Sloan Digital Sky Survey (SDSS), to study the relatively rare population of AGN in LTGs that have nuclear radio luminosities similar to that in their early-type counterparts. The LTG AGN population is preferentially hosted by galaxies that have high stellar masses (M* > 10^10.8 MSun), red colours and low star-formation rates, with little dependence on the detailed morphology or local environment of the host LTG. The merger fraction in the LTG AGN is around 4 times higher than that in the general LTG population, indicating that merging is an important trigger for radio AGN in these systems. The red colours of our systems extend recent work which indicates that merger-triggered AGN in the nearby Universe appear after the peak of the associated starburst, implying that they do not strongly regulate star formation. Finally, we find that in systems where parsec-scale jets are clearly observed in our VLBI images, the jets are perpendicular to the major axis of the galaxy, indicating alignment between the accretion disc and the host galaxy stellar disc.
(Submitted on 17 Dec 2014)
http://arxiv.org/abs/1412.5602PS: One of the co-authors is Enno Middelberg.
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zutopian
On page 6 (Figure 7) there are shown below SDSS images of spiral galaxies, which have radio jets. Besides there are shown the corresponding radio images.:
http://skyserver.sdss.org/dr12/en/tools/explore/Summary.aspx?id=1237667292121530467
http://skyserver.sdss.org/dr12/en/tools/explore/Summary.aspx?id=1237655504032760213
NGC 3504
http://skyserver.sdss.org/dr12/en/tools/explore/Summary.aspx?id=1237667253471543340Posted
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zutopian
The paper by Kaviraj et al. is given as a reference in below paper.:
Discovery of rare double-lobe radio galaxies hosted in spiral galaxies
Authors: Veeresh Singh, C. H. Ishwara-Chandra, Jonathan Sievers, Yogesh Wadadekar, Matt Hilton, Alexandre Beelen
(Submitted on 4 Sep 2015)
http://arxiv.org/abs/1509.01559
TALK discussion:
http://radiotalk.galaxyzoo.org/#/boards/BRG0000009/discussions/DRG0000ctmPosted
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zutopian
What are the IDs of the corresponding Radio Zoo images? There is the below topic, but I am not able to find it out.:
I have a position, how do I find which ARG fields contain it (if any)?
http://radiotalk.galaxyzoo.org/#/boards/BRG0000003/discussions/DRG0000cudPosted
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ivywong
scientist, admin
Note that radio AGN includes compact radio sources.
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sisifolibre
NGC 3504 is here http://radiotalk.galaxyzoo.org/#/subjects/ARG0001uf3
i have a little collection of near galaxies whith compact radio sources if help, but the most of them have low emision
http://radiotalk.galaxyzoo.org/#/collections/CRGS0000ojhere there are a beutiful example
http://radiotalk.galaxyzoo.org/#/subjects/ARG0002us5Posted
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JeanTate
in response to sisifolibre's comment.
here there are a beutiful example http://radiotalk.galaxyzoo.org/#/subjects/ARG0002us5
That is truly wonderful! 😃 Thanks for posting it ...
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