2013MNRAS.434..585S


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.28CET18:49:53

2013MNRAS.434..585S - Mon. Not. R. Astron. Soc., 434, 585-594 (2013/September-1)

Scintillation is an indicator of astrometric stability.

SCHAAP R.G., SHABALA S.S., ELLINGSEN S.P., TITOV O.A. and LOVELL J.E.J.

Abstract (from CDS):

We examine the relationship between astrometric stability and astrophysical properties in flat-spectrum radio-loud quasars making up the celestial reference frame. We use position determinations from geodetic very long baseline interferometry measurements and develop a new metric for source position stability. We then compare this quantity to two measures of source compactness: structure index, which probes structure on milliarcsecond scales and the presence of interstellar scintillation associated with the quasar, which probes scales of tens of µas.

We find that persistent scintillators have greater position stability than episodic scintillators, which are in turn more stable than non-scintillators. Scintillators are also more likely to be compact on milliarcsecond scales, as measured by the structure index. Persistent scintillators are therefore excellent candidates for inclusion in any future realization of the celestial reference frame. A list of these sources is presented in Appendix .

We find that slow (characteristic time-scale >3 d) scintillators have more stable positions than rapid scintillators, suggesting that they are more compact. High-cadence, long-term monitoring is therefore required to identify other members of this population of compact, high brightness temperature quasars.


Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): scattering - astrometry - reference systems - ISM: structure - quasars: general

Simbad objects: 58

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Number of rows : 58

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 7C 0059+5808 QSO 01 02 45.76238248 +58 24 11.1366009   20.09 19.22 18.57 17.90 ~ 181 1
2 QSO B0133+476 QSO 01 36 58.59480585 +47 51 29.1000445     18.0 19.25 15.21 ~ 438 1
3 87GB 014713.9+263145 BL? 01 50 02.8049974347 +26 46 28.083985744           ~ 4 0
4 MASIV J0237+2046 QSO 02 37 50.6293 +20 46 18.449           ~ 5 0
5 QSO B0235+1624 BLL 02 38 38.93010 +16 36 59.2746   16.46 15.50 15.92   ~ 1379 2
6 QSO J0253+3217 Bz? 02 53 33.65014371 +32 17 20.8912585           ~ 31 1
7 ICRF J031313.4+022835 QSO 03 13 13.40545828 +02 28 35.3064424           ~ 15 0
8 NVSS J032844+255208 Rad 03 28 44.34855633 +25 52 08.3990655           ~ 6 1
9 2FGL J0342.4+3859 Bla 03 42 16.26 +38 59 06.2       19.5   ~ 22 0
10 QSO J0343+3633 QSO 03 43 28.95239734 +36 22 12.4295041     20.80 19.78   ~ 57 1
11 QSO B0406+121 BLL 04 09 22.00871268 +12 17 39.8477204   20.5   18.27   ~ 95 1
12 PMN J0411+0843 Rad 04 11 33.8577867719 +08 43 11.400445688           ~ 6 1
13 QSO J0419+3955 Bz? 04 19 22.54953540 +39 55 28.9775927           ~ 16 1
14 QSO J0453+0128 QSO 04 53 02.23861791 +01 28 35.6289550           ~ 14 0
15 QSO J0459+0229 QSO 04 59 52.05066226 +02 29 31.1765607   18.2 19     ~ 151 1
16 QSO B0459+135 BLL 05 02 33.21951320 +13 38 10.9589537   20.0 20.5 19.22   ~ 42 0
17 QSO J0509+0541 BLL 05 09 25.9645434784 +05 41 35.333636817 15.32 14.95 14.78 15.12   ~ 186 2
18 7C 0602+4030 QSO 06 05 50.85535 +40 30 08.1036           ~ 19 1
19 87GB 064111.7+124120 QSO 06 43 59.8556230568 +12 38 18.103824477           ~ 7 1
20 QSO B0754+10 BLL 07 57 06.64294682 +09 56 34.8523471   15.43 15.00 15.99   ~ 397 1
21 NVSS J075828+082708 Rad 07 58 28.0437380673 +08 27 09.032319859           ~ 3 1
22 [VV2010] J080407.6+101213 QSO 08 04 07.584 +10 12 13.28   19.05 18.71     ~ 8 0
23 NVSS J082935+401859 Rad 08 29 35.57613 +40 18 59.2740           ~ 5 1
24 MASIV J0829+4018 BL? 08 29 35.5795 +40 18 59.282           ~ 4 0
25 ICRF J085448.5+803422 QSO 08 54 48.5991937839 +80 34 22.386397550           ~ 12 1
26 ICRF J085654.8+714623 QSO 08 56 54.8684217985 +71 46 23.890920367           ~ 29 1
27 ICRF J091437.9+024559 Sy1 09 14 37.91343166 +02 45 59.2469393   19.94 19.74 19.2   ~ 87 1
28 [VV2006] J091641.8+024253 QSO 09 16 41.7693 +02 42 52.911   19.43 19.15     ~ 22 0
29 6C 092554+502611 BLL 09 29 15.4400532384 +50 13 35.987058917   17.18 16.80 15.94   ~ 112 2
30 NVSS J094616+502009 Rad 09 46 16.04499778 +50 20 09.3473875           ~ 10 1
31 7C 095509.40+473935.00 QSO 09 58 19.67163931 +47 25 07.8424347   18.78 18.62 18.39   ~ 195 1
32 QSO J1008+0621 BLL 10 08 00.81616 +06 21 21.2158 17.61 17.17 17.85 16.73   ~ 79 1
33 QSO J1024+2332 BLL 10 24 53.6365234710 +23 32 33.960744242   18.00 17.42 16.6   ~ 39 0
34 ICRF J104946.3+142938 BLL 10 49 46.32758343 +14 29 38.5738701           ~ 12 1
35 Ton 599 QSO 11 59 31.83390975 +29 14 43.8268741   14.80 14.41 17.652 13.39 ~ 783 1
36 ICRF J124707.5+704645 QSO 12 47 07.5524527837 +70 46 45.115443573           ~ 10 1
37 7C 132656.50+623705.00 QSO 13 28 40.5645180553 +62 21 37.039868859   19.53 19.13     ~ 25 2
38 PB 1950 QSO 14 17 40.4456542879 +38 18 21.138577802   18.73 18.64 18.1   ~ 39 1
39 MITG J144210+0625 QSO 14 42 12.2387011646 +06 25 26.153376892           ~ 8 1
40 87GB 144158.3+031043 BLL 14 44 31.7659238443 +02 57 53.530052292           ~ 5 0
41 CLASS J161050.6171+780900.581 QSO 16 10 50.6022102593 +78 09 00.518402849           ~ 11 1
42 87GB 164608.1+214601 BLL 16 48 17.0673 +21 41 05.874           ~ 3 0
43 7C 173836.20+473929.00 BLL 17 39 57.12907360 +47 37 58.3615566   18.5 19.5 18.88   ~ 103 1
44 4C 51.37 QSO 17 40 36.9779934388 +52 11 43.411910710   18.16 18.5 16.73   ~ 357 1
45 ICRF J174726.6+465850 BLL 17 47 26.64732 +46 58 50.9264     21.30 19.17   ~ 50 1
46 7C 1812+5602 QSO 18 12 57.66948319 +56 03 49.2002134           ~ 19 1
47 ICRF J181926.5+384501 SyG 18 19 26.54737811 +38 45 01.7863328           ~ 106 0
48 87GB 192949.6+473705 QSO 19 31 16.5460970396 +47 43 41.212469308           ~ 10 1
49 [VV98] J200617.7+642445 QSO 20 06 17.69456118 +64 24 45.4180969     19.00 20.13   ~ 49 1
50 QSO J2016+1632 Bz? 20 16 13.86003 +16 32 34.1134       17.29   ~ 26 1
51 NAME AT 2019evq QSO 21 13 54.7206 +11 21 25.411   19.5 20.0     ~ 8 0
52 QSO B2201+1711 BLL 22 03 26.89368 +17 25 48.2479       14.76   ~ 167 1
53 ICRF J221239.1+275938 BLL 22 12 39.1040287017 +27 59 38.433720623           ~ 11 1
54 ICRF J223704.2+421648 QSO 22 37 04.20978321 +42 16 48.2620193           ~ 9 1
55 ICRF J224107.2+412011 BLL 22 41 07.2052849849 +41 20 11.613538488       18.89   ~ 37 1
56 ICRF J230309.9+143141 BLL 23 03 09.95279304 +14 31 41.3544596           ~ 9 0
57 QSO J2311+4543 QSO 23 11 47.40896553 +45 43 56.0164564       19.19   ~ 48 1
58 87GB 232252.5+394057 BLL 23 25 17.8704120896 +39 57 36.514040778   17.8 17.80 17.8   ~ 58 1

    Equat.    Gal    SGal    Ecl

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2020.01.28-18:49:53

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