2000A&A...357...91F

Query : 2000A&A...357...91F

2000A&A...357...91F - Astronomy and Astrophysics, volume 357, 91-100 (2000/5-1)

Optical imaging and spectroscopy of BL Lac objects.

FALOMO R. and ULRICH M.-H.

Abstract (from CDS):

We present optical images and spectroscopy for a dozen of BL Lac objects. Most of these objects were not previously studied and we give for the first time the properties of their host galaxies. The properties of the new host galaxies are generally consistent with those derived in previous optical studies. We found a case (1101-23) where the external isophotes of the galaxy are clearly boxy. In addition we gathered spectroscopy for several BL Lac objects with unknown redshift and for companion galaxies. This allowed us to derive a tentative redshift for two new BL Lacs and to investigate the environment around PKS 0829+04. These data complement existing data available in the literature on host galaxies of BL Lacs and their (close) environments.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: BL Lacertae objects: general - galaxies: interactions - galaxies: nuclei - galaxies: photometry - galaxies: structure

Nomenclature: Fig.6: [PFT94] PKS 0829+046 GN (Nos G3-G4) added.

CDS comments: Galaxies are already known in figures and text: G1 and G2 in PKS 0301-243 = [PFT95] PKS 0301-243 G1 and G2, G in PKS 0735+178 = [SFK93] 0735+178 G1, G1 in PKS 0734+100 = [PFT95] PKS 0734+100 G1, G1 to G2 in PKS 0829+046 = [PFT94] PKS 0829+046 G1 to G2.

Simbad objects: 24

View the references in ADS

Number of rows : 24

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2022	#notes
1	QSO B0138-097	BLL	01 41 25.8320610024	-09 28 43.676872212	16.94	16.55	17.21	~	253	3
2	[PFT95] PKS 0301-243 G1	G	03 03 26.1	-24 07 15				~	2	0
3	QSO B0301-243	BLL	03 03 26.5025589984	-24 07 11.426291220	16.55	16.18		~	192	1
4	USNO-A2.0 0600-01199510	G	03 03 27.7	-24 07 01				~	3	0
5	QSO B0338-214	BLL	03 40 35.6080502592	-21 19 31.171870308	16.04	17.1	17.07	~	157	1
6	2MASS J03530504-3623083	BLL	03 53 05.0447374488	-36 23 08.409059556			18.2	~	26	0
7	QSO B0548-322	BLL	05 50 40.5705144672	-32 16 16.484718648	16.07	15.5		~	383	1
8	[SFK93] 0735+178 G1	G	07 38 07.0	+17 42 25				~	3	0
9	QSO J0738+1742	BLL	07 38 07.3935719136	+17 42 18.998218764	16.76	16.22	15.78	~	924	1
10	QSO B0736+01	QSO	07 39 18.0339358560	+01 37 04.618841340	16.90	16.47	16.19	~	648	1
11	QSO B0754+10	BLL	07 57 06.6427726320	+09 56 34.848603888	15.43	15.00	15.99	~	418	1
12	[PFT95] PKS 0754+100 G1	G	07 57 07.31	+09 56 42.6				~	2	0
13	QSO B0818-128	BLL	08 20 57.4483468704	-12 58 59.176280532	15.30	15.00	16.5	~	166	1
14	USNO-A2.0 0900-06019126	G	08 31 43.99	+04 30 06.3				~	1	0
15	USNO-A2.0 0900-06019627	G	08 31 47.16	+04 29 50.3				~	1	0
16	QSO B0829+047	BLL	08 31 48.8770033992	+04 29 39.086842884	17.10	16.4	14.55	~	439	2
17	[PFT94] PKS 0829+046 G1	G	08 31 49.17	+04 29 36.5				~	2	0
18	USNO-A2.0 0900-06020087	G	08 31 50.15	+04 29 57.8				~	2	0
19	2A 1058-226	BLL	11 03 37.6150845072	-23 29 31.203773520	17.00	16.55	16.61	~	341	2
20	2MASX J13150336-4236500	BLL	13 15 03.3912307368	-42 36 49.760844084	18.07	16.6	16.59	~	92	0
21	1ES 1322-29.7	BLL	13 25 32.8682333328	-30 01 43.506096996		20.00	18.4	~	9	0
22	4FGL J1335.3-2949	BLL	13 35 29.7518919576	-29 50 38.921848188	18.13	19.1	19.25	~	53	0
23	QSO B1741+196	BLL	17 43 57.8330083440	+19 35 09.018846384		16.80	12.7	~	143	1
24	M 73	Cl*	20 59.0	-12 38		8.9		~	32	0

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