Shocked Gas and Star Formation in the Centaurus A Radio Galaxy

1998 ◽  
Vol 502 (1) ◽  
pp. 245-252 ◽  
Author(s):  
John A. Graham
2014 ◽  
Vol 440 (4) ◽  
pp. 3262-3274 ◽  
Author(s):  
E. A. Cooke ◽  
N. A. Hatch ◽  
S. I. Muldrew ◽  
E. E. Rigby ◽  
J. D. Kurk

2016 ◽  
Vol 586 ◽  
pp. A45 ◽  
Author(s):  
Q. Salomé ◽  
P. Salomé ◽  
F. Combes ◽  
S. Hamer ◽  
I. Heywood

1990 ◽  
Vol 124 ◽  
pp. 309-314 ◽  
Author(s):  
Arjun Dey ◽  
Wil van Breugel ◽  
Joseph C. Shields

AbstractWe present the first results of a multiwavelength study of IRAS galaxies with excess radio emission. The sample was selected by cross-correlating the IRAS Faint Source Survey (for |b| ≥ 50°) and the Point Source Catalogue (for 10° < |b| < 50°) with the Texas radio survey. Recent optical (imaging and spectroscopic) and radio (VLA) observations are discussed. These observations will be used to investigate possible connections between radio galaxy activity, star formation and galaxy interactions.


2002 ◽  
Vol 564 (2) ◽  
pp. 688-695 ◽  
Author(s):  
M. Rejkuba ◽  
D. Minniti ◽  
F. Courbin ◽  
D. R. Silva

2016 ◽  
Vol 590 ◽  
pp. A37 ◽  
Author(s):  
F. Santoro ◽  
J. B. R. Oonk ◽  
R. Morganti ◽  
T. A. Oosterloo ◽  
C. Tadhunter

1996 ◽  
Vol 171 ◽  
pp. 474-475
Author(s):  
Rogier A. Windhorst ◽  
Sam M. Pascarelle ◽  
William C. Keel

We present a 67-orbit HST/WFPC2 exposure on the weak radio galaxy 53W002 at z=2.390 and its surrounding cluster. Color Plate 1 shows 12 orbits in IF814W & VF606W, and 24 in BF450W. Potential cluster members were identified through 15 orbits in F410M, optimized for narrow-band searches for compact Lyα objects at z≃2.4 (P96), and confirmed through spectroscopy (W91, P96); 16 candidates were found with significant narrow-band emission in F410M: 4 out of 5 had a confirming MMT spectroscopic redshift at z≃2.40 (P96). All are located within 60″ from 53W002, or ∼ 0.24h–1100 Mpc (qo=0.5) at z ≃2.4, the physical scale of a group or small galaxy cluster. One object contains a weak (variable) AGN, another is a merger with two companions. Their underlying young stellar population is very compact, with rh.l. ≃0.2″ (≃ 0.8h–1100 kpc), and considerably fainter than the L∗-value at z∼2.4, implying sub-galactic sized objects. These results may explain why ground-based Lya searches for PG's have been largely unsuccessful. The narrow-line galaxy 53W002 was imaged in the PC at ∼0.07″ FWHM (WK95, see also W94). Its AGN component is ≤ 20±4% of the total continuum, surrounded by an extended r1/4-envelope with rh.l. ≃1.1″ (4.3 kpc), and has an SED of ∼0.3 Gyr in the center to ∼0.5-1.0 Gyr at ∼4 kpc. A one-sided cloud is seen ∼1.8 kpc West, ∼0.3 mag bluer than the SED, aligned with the radio source and its Ly-α cloud, presumably weak scattered AGN light, and/or jet-induced star-formation.


1996 ◽  
Vol 175 ◽  
pp. 23-24
Author(s):  
D.L. Jones ◽  
S.J. Tingay ◽  
R.A. Preston ◽  
D.L. Jauncey ◽  
J.E. Reynolds ◽  
...  

Centaurus A (NGC 5128) is the nearest giant radio galaxy. It is a Fanaroff-Riley type 1 (low luminosity) radio source, but the compact radio source in the nucleus is strong enough that VLBI imaging has been possible with both the SHEVE array and the VLBA at several frequencies. These observations have detected a sub-parsec scale counterjet. This shows that jet formation in at least some FR I sources is intrinsically two-sided over very small distances and the radio jets in Centaurus A are probably only moderately relativistic. We also find evidence that the center of activity in Centaurus A is partially obscured by a disk or torus of dense plasma.


2009 ◽  
Vol 138 (4) ◽  
pp. 1037-1061 ◽  
Author(s):  
Stéphanie Côté ◽  
Adam Draginda ◽  
Evan D. Skillman ◽  
Bryan W. Miller

2017 ◽  
Vol 835 (2) ◽  
pp. 232 ◽  
Author(s):  
Carl L. Gardner ◽  
Jeremiah R. Jones ◽  
Evan Scannapieco ◽  
Rogier A. Windhorst

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