2002ApJ...569..611S

Query : 2002ApJ...569..611S

2002ApJ...569..611S - Astrophys. J., 569, 611-623 (2002/April-3)

Radio galaxies at z = 1.1 to 3.8: adaptive optics imaging and archival Hubble Space Telescope data.

STEINBRING E., CRAMPTON D. and HUTCHINGS J.B.

Abstract (from CDS):

We have undertaken a program of high-resolution imaging of high-redshift radio galaxies (HzRGs), using adaptive optics on the Canada-France-Hawaii Telescope. We report on deep imaging in J, H, and K bands of six HzRGs in the redshift range 1.1 to 3.8. At these redshifts, near-infrared bandpasses sample the rest-frame visible galactic light. The radio galaxy is resolved in all the fields and is generally elongated along the axis of the radio lobes. These images are compared with archival Hubble Space Telescope Wide-Field Planetary Camera 2 optical observations of the same fields and show that the HzRG morphology in rest-frame ultraviolet and visible light is generally very similar: a string of bright compact knots. Furthermore, this sample–although very small–suggests that the colors of the knots are consistent with light from young stellar populations. If that is the case, a plausible explanation is that these objects are being assembled by mergers at high redshift.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Active - Galaxies: Evolution - Galaxies: Formation - Galaxies: High-Redshift - Instrumentation: Adaptive Optics

Nomenclature: Table 4, Figs 1 to 5: [SCH2002] 3C 356 aN (Nos a-b, a1-a2), [SCH2002] 3C 230 a (Nos a-c), [SCH2002] 3C 230 N (No. 1), [SCH2002] 3C 68.2 a (Nos a-b), [SCH2002] 3C 68.2 N (Nos 1-3), [SCH2002] 3C 294 a (Nos a-d), [SCH2002] 3C 294 N (Nos 1-2), [SCH2002] TXS 0828+193 a (Nos a-e), [SCH2002] TXS 0828+193 N (No. 1). Table 4, Fig.6: Ch90 4C 41.17 AN (Nos A1, A2) added.

Simbad objects: 44

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Number of rows : 44
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NVSS J014343+325349 rG 01 43 43.85 +32 53 49.7         24 ~ 37 1
2 [SCH2002] 3C 68.2 1 ? 02 34 23.4 +31 34 21           ~ 1 0
3 3C 68.2 rG 02 34 23.855 +31 34 17.48   24       ~ 139 1
4 [SCH2002] 3C 68.2 2 ? 02 34 23.9 +31 34 09           ~ 1 0
5 [SCH2002] 3C 68.2 3 ? 02 34 24.3 +31 34 19           ~ 1 0
6 Ch90 4C 41.17 A Rad 06 50 51.58 +41 30 26.3           ~ 8 0
7 4C 41.17 rG 06 50 52.098 +41 30 30.53           ~ 349 1
8 Ch90 4C 41.17 B1 Rad 06 50 52.10 +41 30 30.5           ~ 10 0
9 Ch90 4C 41.17 B2 Rad 06 50 52.20 +41 30 31.0           ~ 7 0
10 Ch90 4C 41.17 B3 Rad 06 50 52.25 +41 30 31.2           ~ 10 0
11 Ch90 4C 41.17 C Rad 06 50 52.45 +41 30 34.6           ~ 8 0
12 [SCH2002] TXS 0828+193 1 ? 08 30 53.5 +19 13 47           ~ 1 0
13 NVSS J083053+191314 rG 08 30 53.507 +19 13 15.49           ~ 74 1
14 GLEAM J092419-220140 QSO 09 24 19.92000 -22 01 41.4984       25.850   ~ 90 1
15 [SCH2002] 3C 230 1 G 09 51 57.6 -00 01 32           ~ 1 0
16 3C 230 rG 09 51 58.824 -00 01 27.20           ~ 86 1
17 [RMW96] 3C 230 1 Rad 09 51 58.9 -00 01 30           ~ 2 0
18 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
19 3C 294 rG 14 06 44.317 +34 11 30.19           ~ 234 1
20 [SCH2002] 3C 294 2 ? 14 06 44.8 +34 11 34           ~ 1 0
21 [SCH2002] 3C 294 1 ? 14 06 44.9 +34 11 41           ~ 1 0
22 3C 356 QSO 17 24 20.232 +50 57 14.47   21.5 21.5     ~ 225 1
23 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2
24 [SCH2002] 3C 294 d Rad ~ ~           ~ 1 0
25 [SCH2002] 3C 294 c Rad ~ ~           ~ 1 0
26 [SCH2002] 3C 294 b Rad ~ ~           ~ 1 0
27 [SCH2002] 3C 294 a Rad ~ ~           ~ 1 0
28 [SCH2002] 3C 230 c Rad ~ ~           ~ 1 0
29 [SCH2002] 3C 230 b Rad ~ ~           ~ 1 0
30 [SCH2002] 3C 230 a Rad ~ ~           ~ 1 0
31 [SCH2002] 3C 356 a2 Rad ~ ~           ~ 1 0
32 [SCH2002] TXS 0828+193 b Rad ~ ~           ~ 1 0
33 [FBB93] 3C 356 D Rad ~ ~           ~ 5 0
34 [BLR97] 3C 68.2 f PoG ~ ~           ~ 1 0
35 [BLR97] 3C 68.2 b PoG ~ ~           ~ 1 0
36 [BLR97] 3C 68.2 a PoG ~ ~           ~ 1 0
37 Ch90 4C 41.17 A2 Rad ~ ~           ~ 1 0
38 Ch90 4C 41.17 A1 Rad ~ ~           ~ 1 0
39 [FBB93] 3C 356 E Rad ~ ~           ~ 6 0
40 [SCH2002] 3C 356 a1 Rad ~ ~           ~ 1 0
41 [SCH2002] TXS 0828+193 c Rad ~ ~           ~ 1 0
42 [SCH2002] TXS 0828+193 d Rad ~ ~           ~ 1 0
43 [SCH2002] TXS 0828+193 e Rad ~ ~           ~ 1 0
44 [SCH2002] TXS 0828+193 a Rad ~ ~           ~ 1 0

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