2001MNRAS.323..718W


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.20CET09:15:43

2001MNRAS.323..718W - Mon. Not. R. Astron. Soc., 323, 718-732 (2001/May-3)

Red synchrotron jets in Parkes quasars.

WHITING M.T., WEBSTER R.L. and FRANCIS P.J.

Abstract (from CDS):

We present model fits to spectral energy distributions in the optical and near-infrared of >100 flat-spectrum radio quasars from the Parkes Half-Jansky Flat-spectrum Sample. We find that ∼40 per cent of the sources have power-law spectral energy distributions (SEDs), while a similar number show evidence for two primary components: a blue power law and optical synchrotron emission. The blue power law is similar to the dominant component observed in the spectra of optically selected quasars. There is strong evidence that the synchrotron component has a turnover in the ultraviolet-optical rest frame of the spectrum. In the remaining sources, it is likely that the synchrotron peaks at longer wavelengths. This mixture of two components is supported by optical polarization measurements in a subgroup of the sources. The sources with power-law SEDs show evidence for an excess number of red power-law slopes compared with optically selected quasars. There are additional spectral components in some of the sources, such as dust and the underlying galaxy, which have not been considered here.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): radiation mechanisms: non-thermal - BL Lacertae objects: general - galaxies: jets - quasars: general

Simbad objects: 18

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Number of rows : 18

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 B0048-09 BLL 00 50 41.31738756 -09 29 05.2102688 16.74 16.39 16.22 16.14   ~ 412 2
2 QSO B0202-172 QSO 02 04 57.67434602 -17 01 19.8403980   18.18 18 17.19   ~ 196 1
3 QSO B0537-441 BLL 05 38 50.36155219 -44 05 08.9389165   15.77 16.48 16   ~ 765 2
4 QSO B0829+047 BLL 08 31 48.8771360822 +04 29 39.086736269   17.10 16.4 14.55   ~ 409 2
5 PKS 1020-10 BLL 10 22 32.8197688971 -10 37 44.292595545   16.25 16.11 16.0   ~ 131 1
6 ICRF J103906.7-154106 Sy1 10 39 06.70510609 -15 41 06.6914201   19.5   19.25   ~ 50 1
7 CTS 10 Sy1 11 03 31.5267293120 -32 51 16.692763487   16.29 16.30 16.4   ~ 100 1
8 PKS 1110-217 rG 11 12 49.84868073 -21 58 29.3513484   24.41       ~ 28 1
9 QSO B1156-094 QSO 11 59 12.71173 -09 40 52.0488   22.6 17.2 20.8   ~ 37 1
10 QSO B1313-333 QSO 13 16 07.98593995 -33 38 59.1725057   18.04 20.0 17.23   ~ 215 1
11 QSO J1512-0906 QSO 15 12 50.53292491 -09 05 59.8295878   16.74 16.54     ~ 1122 1
12 QSO B1546+0246 QSO 15 49 29.43684301 +02 37 01.1634197   17.57 17.42 15.53   ~ 305 1
13 ICRF J165103.6+012923 BLL 16 51 03.66237140 +01 29 23.4588952   22.7 21.2 20.50   ~ 61 1
14 ICRF J173458.3+092658 Bla 17 34 58.37698621 +09 26 58.2601461       20.8   ~ 54 1
15 ICRF J205941.5-364554 PaG 20 59 41.59681380 -36 45 54.6077823           ~ 16 1
16 QSO B2245+029 QSO 22 47 58.68206698 +03 10 42.3534877   19.5 20.1 19.71   ~ 42 1
17 [VV2006] J233954.5-331018 QSO 23 39 54.5353198418 -33 10 16.837765289     22.50 20.8   ~ 32 0
18 PKS 2344-192 Rad 23 47 08.62672125 -18 56 18.8579352           ~ 19 1

    Equat.    Gal    SGal    Ecl

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2019.11.20-09:15:43

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