2010A&A...516A..60N


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.11CEST10:44:09

2010A&A...516A..60N - Astronomy and Astrophysics, volume 516, A60-60 (2010/6-2)

H-alpha monitoring of OJ 287 in 2005-08.

NILSSON K., TAKALO L.O., LEHTO H.J. and SILLANPAEAE A.

Abstract (from CDS):

We present the results of Hα monitoring of the BL Lac object OJ 287 with the VLT during seven epochs in 2005-08. We were able to detect five previously undetected narrow emission lines, λλ6548,6583[NII], λ6563Hα and λλ6716,6731[SII] during at least one of the epochs and a broad Hα feature during two epochs. The broad Hα luminosity was a factor ∼10 lower in 2005-08 than in 1984 when the line was previously detected and a factor ∼10 lower than what is observed in quasars and Seyfert galaxies at the same redshift. The data are consistent with no change in the position or luminostity of the Hα line in 2005-08. The width of the Hα line was 4200±500km/s, consistent with the width in 1984.

Abstract Copyright:

Journal keyword(s): galaxies: active - BL Lacertae object: individual: OJ 287 - galaxies: nuclei

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 QSO J0854+2006 BLL 08 54 48.8749311881 +20 06 30.642936668   15.91 15.43 15.56   ~ 2000 1
2 GD 108 HS* 10 00 47.2462037648 -07 33 30.777365253 12.406 13.349 13.563 13.662 13.781 sdB 129 1
3 WG 22 WD* 12 38 49.7813250074 -49 48 00.218655097   14.14 13.96     DA4.2 204 0
4 LP 916-15 PM* 15 38 59.6477173130 -28 35 36.970418054   12.19 11.62     A 104 0
5 CD-38 10980 WD* 16 23 33.8384178546 -39 13 46.160032569 9.916 10.885 11.029 10.936 10.841 DA2 439 1
6 CD-44 12736 PM* 18 36 25.9487430436 -44 18 36.919462094   10.83 10.22     G0 193 0

    Equat.    Gal    SGal    Ecl

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2020.07.11-10:44:09

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