People: M. Giroletti, P. Malaguti

While searching unassociated sources in the EMS list using a VLSS-NVSS cross correlation, it became apparent that VLBI calibrators/fringe finders are not identified by the automatic association procedure, yet they could be good candidates: VLBI calibrators/fringe finders are typically bright, very compact radio sources.

There's at least a couple of lists that one can use:

  1. the VERA 22GHz Fringe Search Survey (Petrov et al. 2007)
  2. the VLBA and LBA Calibrator Survey (also known as VLBI global solution)

In the tables below, we report the list of matches between VERA/VCS and the unassociated sources in the EMS list. There is 19 sources from VERA (mostly on/behind the galactic plane) and as much as 69 matches with VCS. Note that there is some overlay between the two lists.

EMS name

EMS RA

EMS Dec

d

r95

d/r95

VERA name

EMS0047

11.643

56.937

0.064

0.142

0.45

J0047+5657

EMS0068

15.709

58.455

0.053

0.084

0.63

J0102+5824

EMS0075

17.518

68.071

0.027

0.089

0.31

J0110+6805

EMS0171

42.697

56.531

0.301

0.230

1.31

J0251+5616

EMS0276

65.957

41.827

0.021

0.048

0.43

J0423+4150

EMS0451

100.824

9.013

0.063

0.084

0.75

J0643+0857

EMS0459

101.250

4.780

0.708

0.526

1.35

J0643+0521

EMS0522

116.856

-33.060

0.121

0.104

1.17

J0747-3310

EMS0527

118.624

-11.806

0.023

0.079

0.29

J0754-1147

EMS0562

127.034

-37.493

0.027

0.278

0.10

J0828-3731

EMS0578

130.217

13.197

0.022

0.160

0.13

J0840+1312

EMS0623

141.073

28.201

0.111

0.144

0.77

J0923+2815

EMS0640

146.685

10.177

0.115

0.227

0.51

J0946+1017

EMS0923

211.880

-29.424

0.505

0.419

1.21

J1408-2900

EMS1199

272.170

-19.893

0.013

0.199

0.06

J1808-1953

EMS1219

275.792

-13.682

0.117

0.088

1.34

J1822-1346

EMS1271

285.017

4.179

0.111

0.329

0.34

J1900+0412

EMS1311

293.839

20.516

0.046

0.113

0.41

J1935+2031

EMS0002

359.833

67.400

0.514

0.947

0.54

J2356+6751

EMS name

EMS RA

EMS Dec

d

r95

d/r95

VCS name

EMS0014

2.241

6.572

0.102

0.120

0.85

J0009+0628

EMS0029

7.148

-70.542

0.213

0.162

1.32

J0028-7045

EMS0047

11.643

56.937

0.064

0.142

0.45

J0047+5657

EMS0041

12.040

-84.283

0.132

0.213

0.62

J0044-8422

EMS0068

15.709

58.455

0.053

0.084

0.63

J0102+5824

EMS0075

17.518

68.071

0.027

0.089

0.31

J0110+6805

EMS0135

33.372

22.815

0.156

0.191

0.82

J0212+2244

EMS0164

41.294

24.202

0.111

0.133

0.84

J0245+2405

EMS0171

42.697

56.531

0.301

0.230

1.31

J0251+5616

EMS0174

43.460

51.083

0.039

0.269

0.14

J0253+5102

EMS0276

65.957

41.827

0.021

0.048

0.43

J0423+4150

EMS0353

80.450

21.237

0.024

0.056

0.42

J0521+2112

EMS0404

90.108

-20.026

0.344

0.439

0.78

J0601-2004

EMS0426

94.446

-17.313

0.078

0.110

0.71

J0617-1715

EMS0433

95.873

33.491

0.141

0.127

1.11

J0622+3326

EMS0451

100.824

9.013

0.063

0.084

0.75

J0643+0857

EMS0456

102.260

-60.809

1.272

0.861

1.48

J0642-6150

EMS0464

104.079

-3.361

0.040

0.086

0.47

J0656-0323

EMS0468

105.600

-19.889

0.081

0.183

0.44

J0702-1951

EMS0483

108.509

19.579

0.027

0.047

0.56

J0713+1935

EMS0489

110.374

4.049

0.069

0.110

0.63

J0721+0406

EMS0497

111.142

-47.278

0.376

0.255

1.48

J0726-4728

EMS0522

116.856

-33.060

0.121

0.104

1.17

J0747-3310

EMS0527

118.624

-11.806

0.023

0.079

0.29

J0754-1147

EMS0532

120.137

44.090

0.127

0.375

0.34

J0801+4401

EMS0561

126.460

-32.255

0.051

0.139

0.37

J0825-3218

EMS0562

127.034

-37.493

0.027

0.278

0.10

J0828-3731

EMS0578

130.217

13.197

0.022

0.160

0.13

J0840+1312

EMS0583

131.228

-54.986

0.026

0.123

0.21

J0845-5458

EMS0590

132.375

-35.634

0.072

0.176

0.41

J0849-3541

EMS0623

141.073

28.201

0.111

0.144

0.77

J0923+2815

EMS0640

146.685

10.177

0.115

0.227

0.51

J0946+1017

EMS0659

152.638

-1.897

0.133

0.204

0.65

J1010-0200

EMS0663

154.102

35.808

0.373

0.377

0.99

J1018+3542

EMS0710

165.991

-53.926

0.028

0.058

0.48

J1103-5357

EMS0714

166.718

28.148

0.178

0.239

0.74

J1106+2812

EMS0730

170.095

7.170

0.111

0.096

1.16

J1120+0704

EMS0733

170.727

-64.235

0.073

0.132

0.56

J1123-6417

EMS0772

179.764

6.823

0.526

0.530

0.99

J1157+0641

EMS0793

185.492

71.031

0.166

0.225

0.74

J1220+7105

EMS0838

195.432

8.617

0.315

0.228

1.38

J1300+0828

EMS0850

196.867

-66.964

0.174

0.234

0.74

J1308-6707

EMS0878

201.732

-52.960

0.026

0.071

0.37

J1326-5256

EMS0881

202.292

-56.062

0.075

0.093

0.81

J1329-5608

EMS0879

202.691

-70.138

0.098

0.149

0.65

J1330-7003

EMS0879

202.691

-70.138

0.098

0.149

0.65

J1330-7003

EMS0898

206.539

7.011

0.128

0.146

0.88

J1345+0706

EMS0915

210.191

-56.038

0.046

0.141

0.32

J1400-5604

EMS0923

211.880

-29.424

0.505

0.419

1.21

J1408-2900

EMS0935

216.157

-78.786

0.296

0.433

0.68

J1423-7829

EMS0967

225.813

47.928

0.416

0.379

1.10

J1500+4751

EMS1040

240.970

-49.088

0.020

0.045

0.45

J1603-4904

EMS1041

241.144

-44.718

0.027

0.063

0.43

J1604-4441

EMS1053

244.440

-58.761

0.073

0.142

0.51

J1617-5848

EMS1072

247.378

-61.782

0.119

0.151

0.79

J1628-6152

EMS1100

252.570

-50.725

0.022

0.074

0.29

J1650-5044

EMS1234

277.538

6.285

0.038

0.074

0.52

J1830+0619

EMS1306

293.017

-79.848

0.900

0.693

1.30

J1912-8010

EMS1311

293.839

20.516

0.046

0.113

0.41

J1935+2031

EMS1317

295.406

72.216

0.146

0.140

1.04

J1941+7221

EMS1326

298.692

14.051

0.130

0.146

0.89

J1955+1358

EMS1340

300.288

43.861

0.023

0.037

0.62

J2001+4352

EMS1373

307.306

49.410

0.077

0.082

0.94

J2029+4926

EMS1376

307.533

-6.278

0.098

0.198

0.49

J2030-0622

EMS1475

330.418

-83.465

0.173

0.176

0.99

J2202-8338

EMS1493

333.177

7.052

0.285

0.273

1.05

J2212+0646

EMS1493

333.177

7.052

0.384

0.273

1.41

J2214+0711

EMS1518

340.936

41.022

0.111

0.142

0.78

J2244+4057

EMS1536

345.428

24.370

1.078

0.994

1.08

J2304+2331