2016AJ....152...53B


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.31CET12:31:15

2016AJ....152...53B - Astron. J., 152, 53-53 (2016/September-0)

A global astrometric solution for Pan-STARRS referenced to ICRF2.

BERGHEA C.T., MAKAROV V.V., FROUARD J., HENNESSY G.S., DORLAND B.N., VEILLETTE D.R., DUDIK R.P., MAGNIER E.A., BURGETT W.S., CHAMBERS K.C., DENNEAU L., FLEWELLING H., KAISER N., TONRY J.L., WAINSCOAT R.J. and SESAR B.

Abstract (from CDS):

We describe the development and application of a Global Astrometric Solution (GAS) to the problem of Pan-STARRS1 (PS1) astrometry. Current PS1 astrometry is based on differential astrometric measurements using 2MASS reference stars, and thus PS1 astrometry inherits the errors of the 2MASS catalog. The GAS, based on a single, least-squares adjustment to approximately 750 k "grid stars" using over 3000 extragalactic objects as reference objects, avoids this catalog-to-catalog propagation of errors to a great extent. The GAS uses a relatively small number of quasi-stellar objects (QSOs, or distant active galactic nuclei) with very accurate (<1 mas) radio positions, referenced to the ICRF2. These QSOs provide a hard constraint in the global least-squares adjustment. Solving such a system provides absolute astrometry for all of the stars simultaneously. The concept is much cleaner than conventional astrometry but is not easy to perform for large catalogs. In this paper, we describe our method and its application to Pan-STARRS1 data. We show that large-scale systematic errors are easily corrected but our solution residuals for position (∼60 mas) are still larger than expected based on simulations (∼10 mas). We provide a likely explanation for the reason the small-scale residual errors are not corrected in our solution as would be expected.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): astrometry - catalogs - proper motions - reference systems - reference systems

Simbad objects: 57

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Number of rows : 57

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 Mrk 1501 Sy1 00 10 31.0058529490 +10 58 29.505989476   15.96 15.40 12.22   ~ 648 0
2 ICRF J002900.9-011341 QSO 00 29 00.9860424 -01 13 41.759742   16.3   14.709   ~ 31 0
3 NGC 315 LIN 00 57 48.88335 +30 21 08.8122 12.80 12.20 11.16 11.26   ~ 713 2
4 QSO B0111+021 BLL 01 13 43.14494950 +02 22 17.3163553   16.4 16.0 11.22   ~ 121 1
5 ICRF J012808.0+490105 Sy1 01 28 08.0633722 +49 01 05.985527     17.2 12.11   ~ 33 1
6 ICRF J015002.6-072548 Sy2 01 50 02.6969570114 -07 25 48.474391488   16.86 15.62 15.62   ~ 137 0
7 6C 015907+721900 BLL 02 03 33.38496841 +72 32 53.6672938     19.2 15.90   ~ 73 1
8 UGC 1841 Sy1 02 23 11.41124 +42 59 31.3840   15.71 14.81     ~ 532 2
9 NGC 1052 GiP 02 41 04.79851 -08 15 20.7517 11.84 11.41 10.47 10.71   ~ 1155 2
10 NGC 1101 GiG 02 48 14.8281745 +04 34 40.861171   14.8       ~ 36 1
11 NGC 1218 Sy1 03 08 26.2238190 +04 06 39.300921   12.84       ~ 346 1
12 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3582 3
13 6C 053703+554917 BLL 05 41 14.7577486 +55 50 43.570705           ~ 8 1
14 ICRF J060314.3+062227 BLL 06 03 14.3229676625 +06 22 27.362482440           ~ 11 0
15 NGC 2325 AGN 07 02 40.4026621 -28 41 50.047941   12.17   10.46   ~ 105 0
16 7C 073311.80+594748.00 Bla 07 37 30.08697865 +59 41 03.1943714   15.5   11.8   ~ 57 1
17 3C 189 QSO 07 58 28.10816 +37 47 11.8073   14.15 14.9     ~ 233 1
18 PMN J0824-2428 Rad 08 24 49.2600584 -24 28 52.554694           ~ 7 1
19 ICRF J083915.8+285038 Sy1 08 39 15.82765836 +28 50 38.8030216   16.0 14.90     ~ 84 0
20 NGC 2965 QSO 09 43 19.1534626 +36 14 52.072480   17.17 16.38 8.87   ~ 63 1
21 SN 1993J SN* 09 55 24.77476 +69 01 13.7026   10.8 12.0     SNIIb 1263 1
22 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3998 5
23 Mrk 421 BLL 11 04 27.3139210166 +38 12 31.798324828   13.50 12.90 8.31   ~ 2407 1
24 4C 20.25 BLL 11 25 58.7423698046 +20 05 54.334584443   18.55 17.96     ~ 46 1
25 3C 264.0 QSO 11 45 05.0090520 +19 36 22.741257   14.98 13.97     ~ 540 2
26 7C 114610.00+594129.00 Bla 11 48 50.35825 +59 24 56.3820   12.9   11.57   ~ 212 1
27 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1126 0
28 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1645 2
29 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6283 3
30 Mrk 231 Sy1 12 56 14.2340989340 +56 52 25.238555193   14.68 13.84     ~ 1793 3
31 ICRF J131739.1+411545 Bla 13 17 39.1937723 +41 15 45.617736           ~ 34 0
32 NGC 5077 GiP 13 19 31.66964077 -12 39 25.0754790   13.87 12.85 11.30   ~ 272 0
33 NGC 5141 LIN 13 24 51.4411147 +36 22 42.772637   13.9       ~ 170 1
34 NGC 5232 Bla 13 36 08.2598142 -08 29 51.797889   13   12.20   ~ 62 1
35 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 686 2
36 IC 4374 QSO 14 07 29.7622884 -27 01 04.292258   13.61   11.79   ~ 121 3
37 NGC 5675 LIN 14 32 39.8296180 +36 18 07.932093   14.0       ~ 96 1
38 4C 00.56 BLL 15 16 40.21905831 +00 15 01.9089633   17.28 16.64 10.53   ~ 167 1
39 QSO B1514-24 BLL 15 17 41.8135246339 -24 22 19.482167214   15.13 14.00 13.95   ~ 653 3
40 ICRF J152122.5+042030 BiC 15 21 22.5436020 +04 20 30.136860   15.6 16     ~ 48 1
41 6C 155808+593251 QSO 15 59 01.7059221 +59 24 21.846474   16       ~ 34 1
42 NGC 6061 QSO 16 06 16.0278182 +18 14 59.819771   15.0 15.0     ~ 82 1
43 NGC 6251 Sy2 16 32 31.96990024 +82 32 16.3999540 15.24 14.66 12.89 7.62   ~ 672 0
44 4C 39.49 BLL 16 53 52.21668494 +39 45 36.6089458 14.09 14.15 13.29 8.26   ~ 1936 2
45 QSO B1741+196 BLL 17 43 57.8326894 +19 35 09.019447     16.80 12.7   ~ 128 1
46 6C 174400+554318 QSO 17 44 56.60706995 +55 42 17.1611150   13.0 13.5     ~ 70 1
47 NGC 6500 LIN 17 55 59.78195 +18 20 17.6713   13.43 12.54     ~ 208 0
48 ICRF J183503.3+324146 Sy1 18 35 03.3896681512 +32 41 46.856048508   16.50 15.39 10.50   ~ 587 1
49 PKS J2116+0225 Rad 21 16 50.7449472 +02 25 46.270365           ~ 55 2
50 ICRF J213744.1+345542 QSO 21 37 44.1027633 +34 55 42.091949           ~ 8 0
51 4C 04.77 BLL 22 04 17.6523555 +04 40 02.022667   16.20 15.2 10.2   ~ 181 2
52 2MASS J22194418+2120534 BLL 22 19 44.1752932952 +21 20 53.187810099     17.00     ~ 20 2
53 4C 11.71 QSO 22 49 54.5860165 +11 36 30.845467   14.4       ~ 167 2
54 ICRF J232721.9+152437 Sy1 23 27 21.9660410 +15 24 37.310495   16.93 16.28 10.09   ~ 71 1
55 ICRF J233355.2-234340 BLL 23 33 55.23780 -23 43 40.6580   16.45 17 11.21   ~ 144 1
56 NGC 7720 Sy1 23 38 29.38322439 +27 01 53.2583763   13.9 13.3     ~ 514 4
57 QSO B2344+514 BLL 23 47 04.8376303689 +51 42 17.875387216     15.50 10.7   ~ 394 0

    Equat.    Gal    SGal    Ecl

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2020.10.31-12:31:15

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