2005A&A...434..469F

Query : 2005A&A...434..469F

2005A&A...434..469F - Astronomy and Astrophysics, volume 434469-473 (2005/5-1)

VLT adaptive optics imaging of QSO host galaxies and their close environment at z ∼ 2.5: Results from a pilot program.

FALOMO R., KOTILAINEN J.K., SCARPA R. and TREVES A.

Abstract (from CDS):

We report on ESO-VLT near-IR adaptive optics imaging of one radio-loud (PKS 0113-283) and two radio quiet (Q 0045-3337 and Q 0101-337) quasars at z>2. In the first case we are able to resolve the QSO and find that it is hosted by an elliptical of absolute magnitude M_K=-27.6. For the other two objects no extended emission has been unambiguously detected. This result, although restricted to a single object, extends up to z=2.5 the finding that cosmic evolution of radio-loud quasar hosts follows the trend expected for luminous and massive spheroids undergoing passive evolution. For Q 0045-3337 our high resolution images show that it is located 1.2-arcsec from a K=17.5 foreground disc galaxy, which may act as a gravitational lens, since the QSO most probably lies within the galaxy Einstein radius.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - infrared: galaxies - galaxies: quasars: general - galaxies: evolution

Nomenclature: Fig.1: [FKS2005] 0045-3337 GN (No. G1), [FKS2005] 0101-337 GN (Nos G1-G2).

Simbad objects: 6

Full paper

View the references in ADS

Number of rows : 6

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2026	#notes
1	QSO B0045-3337	*	00 47 41.90	-33 20 55.0		17.80		~	5	1
2	QSO B0101-337	QSO	01 04 18.9570282720	-33 31 00.746377752		18.10		~	6	1
3	QSO B0113-283	Bla	01 15 23.8835481000	-28 04 55.225368228	19.64		20.09	~	44	1
4	[FKS2005] 0101-337 G2	G	~	~				~	1	1
5	[FKS2005] 0101-337 G1	G	~	~				~	1	1
6	[FKS2005] 0045-3337 G1	G	~	~		16.97		~	2	0

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