2008A&A...487L..29N


Query : 2008A&A...487L..29N

2008A&A...487L..29N - Astronomy and Astrophysics, volume 487, L29-32 (2008/8-4)

Detection of the host galaxy of S5 0716+714.

NILSSON K., PURSIMO T., SILLANPAEAE A., TAKALO L.O. and LINDFORS E.

Abstract (from CDS):

We have acquired a deep i-band image of the BL Lacertae object S5 0716+714 while the target was in an low optical state. Due to the faintness of the nucleus, we were able to detect the underlying host galaxy. The host galaxy is measured to have an I-band magnitude of 17.5±0.5 and an effective radius of (2.7±0.8)arcsec. Using the host galaxy as a ``standard candle'', we derive z=0.31±0.08 (1σ error) for the host galaxy of S5 0716+714. This redshift is consistent with the redshift z=0.26 determined by spectroscopy for 3 galaxies close to S5 0716+714. The effective radius at z=0.31 would be 12±4kpc, which is consistent with values obtained for BL Lac host galaxies. An optical spectrum acquired during the same epoch shows no identifiable spectral lines.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: distances and redshifts - BL Lacertae objects: individual: S5 0716+714

Nomenclature: Fig.1: [NPS2008] SN (Nos S1-S4), [NPS2008] A (No. T).

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 2MASS J07211606+7119551 * 07 21 16.0886641296 +71 19 55.137967680           ~ 1 0
2 2MASS J07211607+7120164 * 07 21 16.0906511496 +71 20 16.374058800           ~ 1 0
3 TYC 4368-1025-1 * 07 21 33.3741963648 +71 19 21.092406420   11.90 11.31 11.12 10.92 ~ 7 0
4 [NMR2005] h * 07 21 41.2530151968 +71 19 11.771519664   15.75 15.06     ~ 2 0
5 [BKB2006b] G2 G 07 21 42.111 +71 20 24.08   19.9   19.2   ~ 2 0
6 [BKB2006b] G1 G 07 21 51.403 +71 20 10.80   20.0   19.4 19.0 ~ 3 0
7 [GVR97] S5 0716+714 B * 07 21 52.3289285184 +71 18 17.712655380   13.04 12.43   11.79 ~ 10 0
8 8C 0716+714 BLL 07 21 53.4482942664 +71 20 36.363846516   15.5 14.17 14.27   ~ 1221 1
9 [GVR97] S5 0716+714 C * 07 21 54.3632292192 +71 19 20.917412904   14.15 13.55   12.85 ~ 13 0
10 [BKB2006b] G3 G 07 21 54.962 +71 20 11.20         22.1 ~ 3 0
11 [GVR97] S5 0716+714 D * 07 22 12.6270485016 +71 21 14.800738716   14.24 13.63   12.97 ~ 8 0
12 2MASS J07222169+7119413 * 07 22 21.6968018376 +71 19 41.361764196           ~ 1 0

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2022.08.18-03:28:09

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