Star-burst galactic nuclei

Balzano, V.

doi:10.1086/160983

Cited by 172 publications

(128 citation statements)

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“…The radio power at 1.4 GHz for these galaxies is less than 10 WHz 20 1 -, indicating that the FUV emission is dominated via star formation and not by AGNs. Also, NGC855 shows CO emission (Nakanishi et al 2007), NGC3928 has a starburst nucleus (Balzano 1983), and IC5267 has a large number of star formation sites (Caldwell et al 1991), indicating ongoing star formation activity. NGC7252 is a merger remnant (Chien & Barnes 2010) that has an old and new starforming population residing in the nuclear regions of the galaxy.…”

Section: Properties Of Star Formation In the Sample Galaxiesmentioning

confidence: 99%

Constraints on Feedback in the Local Universe: The Relation Between Star Formation and Agn Activity in Early-Type Galaxies

Vaddi

O’Dea

Baum

et al. 2016

ApJ

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We address the relation between star formation and active galactic nucleus (AGN) activity in a sample of 231 nearby (0.0002 < z < 0.0358) early-type galaxies by carrying out a multi-wavelength study using archival observations in the UV, IR, and radio. Our results indicate that early-type galaxies in the current epoch are rarely powerful AGNs, with P 10 WHz 22 1 < -for a majority of the galaxies. Only massive galaxies are capable of hosting powerful radio sources while less massive galaxies are hosts to lower radio power sources. Evidence of ongoing star formation is seen in approximately 7% of the sample. The star formation rate (SFR) of these galaxies is less than 0.1 M e yr −1 . They also tend to be radio faint (P 10 WHzThere is a nearly equal fraction of star-forming galaxies in radio faint (P 10 WHz 22 1 < -) and radio bright galaxies (P 10 WHz 22 1  -) suggesting that both star formation and radio mode feedback are constrained to be very low in our sample. We notice that our galaxy sample and the Brightest Cluster Galaxies follow similar trends in radio power versus SFR. This may be produced if both radio power and SFR are related to stellar mass.

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Section: Properties Of Star Formation In the Sample Galaxiesmentioning

confidence: 99%

Constraints on Feedback in the Local Universe: The Relation Between Star Formation and Agn Activity in Early-Type Galaxies

Vaddi

O’Dea

Baum

et al. 2016

ApJ

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“…We have masked the nuclear emissions in these three cases and excluded them from the integration (very small in the cases of NGC 918 and the low-luminosity AGN of NGC 4639), so that the global Hα luminosities are not biased due to AGNs. NGC 3504 on the other hand is a starburst galaxy (Balzano 1983) with a large amount of star formation in its centre.…”

Section: Star Formation Ratesmentioning

confidence: 99%

Hα kinematics of S4G spiral galaxies – II. Data description and non-circular motions

Erroz-Ferrer¹,

Knapen²,

Leaman³

et al. 2015

Monthly Notices of the Royal Astronomical Society

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We present a kinematical study of 29 spiral galaxies included in the Spitzer Survey of Stellar Structure in Galaxies, using Hα Fabry-Perot data obtained with the Galaxy Hα Fabry-Perot System instrument at the William Herschel Telescope in La Palma, complemented with images in the R band and in Hα. The primary goal is to study the evolution and properties of the main structural components of galaxies through the kinematical analysis of the FP data, complemented with studies of morphology, star formation and mass distribution. In this paper we describe how the FP data have been obtained, processed and analysed. We present the resulting moment maps, rotation curves, velocity model maps and residual maps. Images are available in FITS format through the NASA/IPAC Extragalactic Database and the Centre de Données Stellaires. With these data products we study the non-circular motions, in particular those found along the bars and spiral arms. The data indicate that the amplitude of the non-circular motions created by the bar does not correlate with the bar strength indicators. The amplitude of those non-circular motions in the spiral arms does not correlate with either arm class or star formation rate along the spiral arms. This implies that the presence and the magnitude of the streaming motions in the arms is a local phenomenon.

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“…a(25, 60) p Ϫ2.06 The above estimation implies that old SBGs are ∼10 times more numerous than classical SBGs. All of the Palomar SBGs share 40% of the surveyed galaxies (Ho et al 1997a(Ho et al , 1997b(Ho et al , 1997c, while the Markarian SBGs share 3% of the field galaxies (Balzano 1983). The Palomar SBGs with 10 L ≤ 10 FIR appear to be dominated by old SBGs also.…”

Section: Model Analysismentioning

confidence: 92%

“…They originate in ionized gas around O stars. The classical examples are the Markarian SBGs, which account for 3% of the field galaxies (Balzano 1983). However, the above selection is biased toward young SBGs.…”

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Numerous Old Starburst Galaxies in the Local Universe

Mouri¹,

Taniguchi²

2000

The Astrophysical Journal

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Old starburst galaxies are deficient in O stars and hence do not exhibit strong line emission in the optical regime. However, there remain many B stars, which are expected to heat dust grains and generate strong continuum emission in the far-infrared. The IRAS data for a statistically complete sample of nearby galaxies reveal for the first time that such objects are as numerous as 30%-40% of the local galaxy population.

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Star-burst galactic nuclei

Cited by 172 publications

References 0 publications

Constraints on Feedback in the Local Universe: The Relation Between Star Formation and Agn Activity in Early-Type Galaxies

Constraints on Feedback in the Local Universe: The Relation Between Star Formation and Agn Activity in Early-Type Galaxies

Hα kinematics of S4G spiral galaxies – II. Data description and non-circular motions

Numerous Old Starburst Galaxies in the Local Universe

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