The Spiral Host Galaxy of the Double Radio Source 0313?1921

Keel, William C.; White, Raymond E.; Owen, F. N.; Ledlow, Michael J.

doi:10.1086/508340

Cited by 48 publications

(65 citation statements)

References 47 publications

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“…This is consistent with the morphological class FRI (Fanaroff & Riley 1974). Keel et al (2006) suggest the unusual nature of 0313-192 may be attributed to the combination of a number of factors. Firstly, the over-luminous bulge implies that the central black hole is unusually massive, so jets emanating from it may travel faster than those seen in Seyfert galaxies.…”

Section: Radio Galaxies That Are Hosted By Spiralssupporting

confidence: 87%

“…Table 1 gives a complete-to-date list of spiral galaxies that host large double-lobed radio sources 1 . 0313-192 was the first confirmed doublelobed radio source hosted by a spiral galaxy (Ledlow, Owen, & Keel 1998;Ledlow et al 2001;Keel et al 2006) 2 . 0313-192 is an edge-on spiral galaxy (Hubble type Sb) that hosts a 360 kpc double-lobed radio source.…”

Section: Radio Galaxies That Are Hosted By Spiralsmentioning

confidence: 99%

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J1649+2635: a grand-design spiral with a large double-lobed radio source

Mao

Owen

Duffin

et al. 2014

Monthly Notices of the Royal Astronomical Society

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We report the discovery of a grand-design spiral galaxy associated with a double-lobed radio source. J1649+2635 (z = 0.0545) is a red spiral galaxy with a prominent bulge that it is associated with a L 1.4 GHz ∼10 24 W Hz −1 double-lobed radio source that spans almost 100 kpc. J1649+2635 has a black hole mass of M BH ∼ 3-7 × 10 8 M ⊙ and SFR ∼ 0.26 -2.6 M ⊙ year −1 . The galaxy hosts a ∼96 kpc diffuse optical halo, which is unprecedented for spiral galaxies. We find that J1649+2635 resides in an overdense environment with a mass of M dyn = 7.7 +7.9 −4.3 × 10 13 M ⊙ , likely a galaxy group below the detection threshold of the ROSAT All-Sky Survey. We suggest one possible scenario for the association of double-lobed radio emission from J1649+2635 is that the source may be similar to a Seyfert galaxy, located in a denser-than-normal environment. The study of spiral galaxies that host large-scale radio emission is important because although rare in the local Universe, these sources may be more common at high-redshifts.

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Section: Radio Galaxies That Are Hosted By Spiralssupporting

confidence: 87%

Section: Radio Galaxies That Are Hosted By Spiralsmentioning

confidence: 99%

J1649+2635: a grand-design spiral with a large double-lobed radio source

Mao

Owen

Duffin

et al. 2014

Monthly Notices of the Royal Astronomical Society

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“…The Circinus spiral galaxy shows similar kiloparsec-scale (projected) bipolar radio lobes ( Harnett et al 1990) and a projected 100 pc scale jetlike feature aligned with the radio lobes ( Elmouttie et al 1998), together with a parsec-scale nuclear outflow (Greenhill et al 2003). The spiral galaxy 0313À192 hosts a one-sided nuclear jet of about 2 kpc length that powers bright radio lobes of type FR I extending to about 100 kpc from the nucleus (Ledlow et al 2001;Keel et al 2006).…”

Section: Introductionmentioning

confidence: 84%

“…Only a small southern radio jet coming from the embedded AGN ( Keel et al 2006) has been detected, with a length of a few kiloparsecs. The jet is weak and its total flux density is only 729 Jy at 3.5 cm (Ledlow et al 2001), corresponding to a radio power of %7 ; 10 21 W Hz À1 .…”

Section: Comparison To Other Nearby Spiral Galaxies With Large-scale mentioning

confidence: 99%

Radio Continuum Jet in NGC 7479

Laine

Beck

2008

ApJ

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The barred galaxy NGC 7479 hosts a remarkable jetlike radio continuum feature: bright, 12 kpc long in projection, and hosting an aligned magnetic field. The degree of polarization is 6% Y8% along the jet and remarkably constant, which is consistent with helical field models. The radio brightness of the jet suggests strong interaction with the ISM and hence a location near the disk plane. We observed NGC 7479 at four wavelengths with the VLA and Effelsberg radio telescopes. The equipartition strength is 35Y40 G for the total and !10 G for the ordered magnetic field in the jet. The jet acts as a bright, polarized background. Faraday rotation between 3.5 and 6 cm and depolarization between 6 and 22 cm can be explained by magnetoionic gas in front of the jet, with thermal electron densities of '0.06 cm À3 in the bar and '0.03 cm À3 outside the bar. The regular magnetic field along the bar points toward the nucleus on both sides. The regular field in the disk reveals multiple reversals, probably consisting of field loops stretched by a shearing gas flow in the bar. The projection of the jet bending in the sky plane is in the sense opposite to that of the underlying stellar and gaseous spiral structure. The bending in 3D is most easily explained as a precessing jet, with an age less than 10 6 yr. Our observations are consistent with very recent triggering, possibly by a minor merger. NGC 7479 provides a unique opportunity to study interaction-triggered 15 kpc scale radio jets within a spiral galaxy.

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“…Radio AGN are, therefore, comparatively rare in late-type galaxies (LTGs) compared to their early-type counterparts, with relatively few examples having been studied in the past literature (e.g. Ekers et al 1978;Ulvestad & Wilson 1984;Edelson 1987;Norris, Allen & Roche 1988; Norris E-mail: s.kaviraj@herts.ac.uk et al 1990;Ledlow, Owen & Keel 1998;Morganti et al 2001;Keel et al 2006;Zhou et al 2007;Yuan et al 2008;Gliozzi et al 2010;Inskip et al 2010;Norris et al 2012;Mao et al 2014). In particular, Sadler et al (1995) have performed a detailed study of the properties of parsec-scale radio cores in local early and LTGs and studied the differences between the hosts of radio AGN in galaxies of different morphological types.…”

Section: Introductionmentioning

confidence: 99%

Radio AGN in spiral galaxies

Kaviraj

Shabala

Deller

et al. 2015

Mon. Not. R. Astron. Soc.

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Radio 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 20 cm survey with the Sloan Digital Sky Survey, 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 M ), 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 ∼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 very long baseline interferometry images, the jets are perpendicular to the major axis of the galaxy, indicating strong alignment between the accretion disc and the host galaxy stellar disc.

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The Spiral Host Galaxy of the Double Radio Source 0313?1921

Cited by 48 publications

References 47 publications

J1649+2635: a grand-design spiral with a large double-lobed radio source

J1649+2635: a grand-design spiral with a large double-lobed radio source

Radio Continuum Jet in NGC 7479

Radio AGN in spiral galaxies

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