Table 1. Open in new tab Journal of...

Date 2017	HJD	SNR	Rot.	RV	S-index	H α-index	B_l	N_l	Det.
Feb 14	7799.6214	534	0.000	4.54	0.162	0.275	1.3 ± 0.4	0.0 ± 0.4	M
Feb 15	7800.6362	548	0.110	4.53	0.161	0.275	0.9 ± 0.3	0.1 ± 0.3	N
Feb 16	7801.5917	548	0.214	4.52	0.162	0.275	0.5 ± 0.2	0.1 ± 0.2	N
Feb 17	7802.6201	548	0.326	4.57	0.162	0.274	0.6 ± 0.3	0.3 ± 0.3	N
Feb 18	7803.6170	543	0.434	4.54	0.162	0.275	0.9 ± 0.3	−0.2 ± 0.3	N
Feb 19	7804.5554	540	0.536	4.50	0.161	0.276	0.4 ± 0.3	−0.4 ± 0.3	N
Feb 20	7805.5919	516	0.649	4.60	0.160	0.275	0.4 ± 0.2	0.2 ± 0.2	N
Feb 21	7806.5967	530	0.758	4.53	0.160	0.276	0.1 ± 0.2	−0.2 ± 0.3	N
Feb 22	7807.5591	526	0.863	4.58	0.162	0.275	1.4 ± 0.5	0.0 ± 0.5	N
Mar 01	7814.5545	526	1.623	4.66	0.161	0.275	1.0 ± 0.3	0.0 ± 0.3	M
Mar 08	7821.4747	493	2.375	4.63	0.162	0.275	3.0 ± 0.7	0.2 ± 0.7	M
Mar 14	7827.5549	494	3.036	4.56	0.161	0.276	0.2 ± 0.3	0.1 ± 0.3	N
Mar 15	7828.4753	563	3.136	4.57	0.159	0.276	0.3 ± 0.2	0.3 ± 0.2	N
Mar 16	7829.4932	525	3.247	4.60	0.160	0.275	0.7 ± 0.2	0.2 ± 0.2	N
Mar 18	7831.5311	529	3.468	4.62	0.157	0.273	0.8 ± 0.2	−0.4 ± 0.2	M
Mar 28	7841.4796	538	4.550	4.58	0.160	0.276	0.5 ± 0.2	0.3 ± 0.2	N
Mar 29	7842.4860	554	4.659	4.59	0.160	0.276	1.3 ± 0.2	0.0 ± 0.2	M
Apr 03	7847.3993	554	5.193	4.56	0.163	0.276	1.0 ± 0.2	0.1 ± 0.2	D
Apr 03	7847.4124	543	5.195	4.55	0.163	0.276	1.6 ± 0.6	0.2 ± 0.6	M
Apr 06	7850.4794	505	5.528	4.59	0.163	0.276	1.0 ± 0.6	0.2 ± 0.6	N
Apr 06	7850.4925	512	5.529	4.58	0.164	0.276	0.8 ± 0.4	−0.1 ± 0.4	N
Apr 07	7851.4844	523	5.637	4.59	0.162	0.276	0.3 ± 0.2	0.1 ± 0.2	N
Apr 07	7851.4974	521	5.639	4.59	0.163	0.276	1.6 ± 0.7	0.4 ± 0.7	N
Apr 08	7852.4197	559	5.739	4.60	0.166	0.275	0.7 ± 0.2	−0.3 ± 0.2	N
Apr 08	7852.4328	561	5.740	4.61	0.166	0.275	0.6 ± 0.3	0.0 ± 0.3	N
Apr 10	7854.5044	514	5.966	4.61	0.162	0.275	1.7 ± 0.4	−0.2 ± 0.4	D
Apr 10	7854.5174	499	5.967	4.61	0.163	0.275	2.4 ± 0.7	−0.5 ± 0.7	D
Apr 11	7855.4529	535	6.069	4.60	0.162	0.274	1.0 ± 0.2	−0.3 ± 0.2	D
Apr 11	7855.4660	522	6.070	4.60	0.162	0.275	2.0 ± 0.6	0.2 ± 0.6	D
Apr 12	7856.4745	524	6.180	4.61	0.163	0.276	3.1 ± 0.6	−0.4 ± 0.6	D
Apr 12	7856.4878	518	6.181	4.62	0.164	0.276	1.1 ± 0.4	−0.1 ± 0.4	D
Apr 16	7860.4455	552	6.611	4.58	0.162	0.276	0.8 ± 0.3	−0.2 ± 0.3	D
Apr 16	7860.4586	555	6.613	4.58	0.163	0.276	0.9 ± 0.3	0.3 ± 0.3	N
Apr 17	7861.3953	546	6.715	4.59	0.162	0.276	0.5 ± 0.2	0.0 ± 0.2	M
Apr 17	7861.4083	559	6.716	4.59	0.161	0.276	0.3 ± 0.2	−0.1 ± 0.2	N
Apr 19	7863.4659	555	6.940	4.52	0.162	0.276	1.7 ± 0.6	0.4 ± 0.6	N
Apr 19	7863.4790	552	6.941	4.52	0.161	0.277	0.9 ± 0.3	−0.1 ± 0.3	N
Apr 20	7864.3500	550	7.036	4.56	0.162	0.277	1.5 ± 0.3	0.2 ± 0.3	D
Apr 20	7864.3631	553	7.037	4.56	0.162	0.277	1.4 ± 0.2	0.0 ± 0.2	D
Apr 21	7865.4823	518	7.159	4.61	0.164	0.277	1.3 ± 0.3	−0.4 ± 0.3	M
Apr 21	7865.4954	518	7.160	4.61	0.164	0.277	2.7 ± 0.8	0.0 ± 0.8	D
Apr 22	7866.3487	543	7.253	4.60	0.164	0.276	1.1 ± 0.5	0.1 ± 0.5	D
Apr 22	7866.3618	555	7.254	4.60	0.164	0.276	1.3 ± 0.3	0.2 ± 0.3	D
Apr 23	7867.4269	549	7.370	4.62	0.164	0.276	1.7 ± 0.3	0.3 ± 0.3	D
Apr 23	7867.4399	553	7.372	4.62	0.163	0.276	1.2 ± 0.3	0.0 ± 0.3	D
Apr 24	7868.3968	512	7.476	4.66	0.165	0.275	1.5 ± 0.2	−0.1 ± 0.2	D
Apr 24	7868.4100	512	7.477	4.66	0.164	0.275	1.8 ± 0.2	−0.2 ± 0.2	D

Date 2017

HJD

SNR

Rot.

S-index

H α-index

B_l

N_l

Det.

(local time)

2450000+

Stokes I

cycle

(km s⁻¹)

(G)

N,M,D

Feb 14

7799.6214

534

0.000

4.54

0.162

0.275

1.3 ± 0.4

0.0 ± 0.4

Feb 15

7800.6362

548

0.110

4.53

0.161

0.275

0.9 ± 0.3

0.1 ± 0.3

Feb 16

7801.5917

548

0.214

4.52

0.162

0.275

0.5 ± 0.2

0.1 ± 0.2

Feb 17

7802.6201

548

0.326

4.57

0.162

0.274

0.6 ± 0.3

0.3 ± 0.3

Feb 18

7803.6170

543

0.434

4.54

0.162

0.275

0.9 ± 0.3

−0.2 ± 0.3

Feb 19

7804.5554

540

0.536

4.50

0.161

0.276

0.4 ± 0.3

−0.4 ± 0.3

Feb 20

7805.5919

516

0.649

4.60

0.160

0.275

0.4 ± 0.2

0.2 ± 0.2

Feb 21

7806.5967

530

0.758

4.53

0.160

0.276

0.1 ± 0.2

−0.2 ± 0.3

Feb 22

7807.5591

526

0.863

4.58

0.162

0.275

1.4 ± 0.5

0.0 ± 0.5

Mar 01

7814.5545

526

1.623

4.66

0.161

0.275

1.0 ± 0.3

0.0 ± 0.3

Mar 08

7821.4747

493

2.375

4.63

0.162

0.275

3.0 ± 0.7

0.2 ± 0.7

Mar 14

7827.5549

494

3.036

4.56

0.161

0.276

0.2 ± 0.3

0.1 ± 0.3

Mar 15

7828.4753

563

3.136

4.57

0.159

0.276

0.3 ± 0.2

Mar 16

7829.4932

525

3.247

4.60

0.160

0.275

0.7 ± 0.2

0.2 ± 0.2

Mar 18

7831.5311

529

3.468

4.62

0.157

0.273

0.8 ± 0.2

−0.4 ± 0.2

Mar 28

7841.4796

538

4.550

4.58

0.160

0.276

0.5 ± 0.2

0.3 ± 0.2

Mar 29

7842.4860

554

4.659

4.59

0.160

0.276

1.3 ± 0.2

0.0 ± 0.2

Apr 03

7847.3993

554

5.193

4.56

0.163

0.276

1.0 ± 0.2

0.1 ± 0.2

Apr 03

7847.4124

543

5.195

4.55

0.163

0.276

1.6 ± 0.6

0.2 ± 0.6

Apr 06

7850.4794

505

5.528

4.59

0.163

0.276

1.0 ± 0.6

0.2 ± 0.6

Apr 06

7850.4925

512

5.529

4.58

0.164

0.276

0.8 ± 0.4

−0.1 ± 0.4

Apr 07

7851.4844

523

5.637

4.59

0.162

0.276

0.3 ± 0.2

0.1 ± 0.2

Apr 07

7851.4974

521

5.639

4.59

0.163

0.276

1.6 ± 0.7

0.4 ± 0.7

Apr 08

7852.4197

559

5.739

4.60

0.166

0.275

0.7 ± 0.2

−0.3 ± 0.2

Apr 08

7852.4328

561

5.740

4.61

0.166

0.275

0.6 ± 0.3

0.0 ± 0.3

Apr 10

7854.5044

514

5.966

4.61

0.162

0.275

1.7 ± 0.4

−0.2 ± 0.4

Apr 10

7854.5174

499

5.967

4.61

0.163

0.275

2.4 ± 0.7

−0.5 ± 0.7

Apr 11

7855.4529

535

6.069

4.60

0.162

0.274

1.0 ± 0.2

−0.3 ± 0.2

Apr 11

7855.4660

522

6.070

4.60

0.162

0.275

2.0 ± 0.6

0.2 ± 0.6

Apr 12

7856.4745

524

6.180

4.61

0.163

0.276

3.1 ± 0.6

−0.4 ± 0.6

Apr 12

7856.4878

518

6.181

4.62

0.164

0.276

1.1 ± 0.4

−0.1 ± 0.4

Apr 16

7860.4455

552

6.611

4.58

0.162

0.276

0.8 ± 0.3

−0.2 ± 0.3

Apr 16

7860.4586

555

6.613

4.58

0.163

0.276

0.9 ± 0.3

0.3 ± 0.3

Apr 17

7861.3953

546

6.715

4.59

0.162

0.276

0.5 ± 0.2

0.0 ± 0.2

Apr 17

7861.4083

559

6.716

4.59

0.161

0.276

0.3 ± 0.2

−0.1 ± 0.2

Apr 19

7863.4659

555

6.940

4.52

0.162

0.276

1.7 ± 0.6

0.4 ± 0.6

Apr 19

7863.4790

552

6.941

4.52

0.161

0.277

0.9 ± 0.3

−0.1 ± 0.3

Apr 20

7864.3500

550

7.036

4.56

0.162

0.277

1.5 ± 0.3

0.2 ± 0.3

Apr 20

7864.3631

553

7.037

4.56

0.162

0.277

1.4 ± 0.2

0.0 ± 0.2

Apr 21

7865.4823

518

7.159

4.61

0.164

0.277

1.3 ± 0.3

−0.4 ± 0.3

Apr 21

7865.4954

518

7.160

4.61

0.164

0.277

2.7 ± 0.8

0.0 ± 0.8

Apr 22

7866.3487

543

7.253

4.60

0.164

0.276

1.1 ± 0.5

0.1 ± 0.5

Apr 22

7866.3618

555

7.254

4.60

0.164

0.276

1.3 ± 0.3

0.2 ± 0.3

Apr 23

7867.4269

549

7.370

4.62

0.164

0.276

1.7 ± 0.3

0.3 ± 0.3

Apr 23

7867.4399

553

7.372

4.62

0.163

0.276

1.2 ± 0.3

0.0 ± 0.3

Apr 24

7868.3968

512

7.476

4.66

0.165

0.275

1.5 ± 0.2

−0.1 ± 0.2

Apr 24

7868.4100

512

7.477

4.66

0.164

0.275

1.8 ± 0.2

−0.2 ± 0.2

Date 2017	HJD	SNR	Rot.	RV	S-index	H α-index	B_l	N_l	Det.
Feb 14	7799.6214	534	0.000	4.54	0.162	0.275	1.3 ± 0.4	0.0 ± 0.4	M
Feb 15	7800.6362	548	0.110	4.53	0.161	0.275	0.9 ± 0.3	0.1 ± 0.3	N
Feb 16	7801.5917	548	0.214	4.52	0.162	0.275	0.5 ± 0.2	0.1 ± 0.2	N
Feb 17	7802.6201	548	0.326	4.57	0.162	0.274	0.6 ± 0.3	0.3 ± 0.3	N
Feb 18	7803.6170	543	0.434	4.54	0.162	0.275	0.9 ± 0.3	−0.2 ± 0.3	N
Feb 19	7804.5554	540	0.536	4.50	0.161	0.276	0.4 ± 0.3	−0.4 ± 0.3	N
Feb 20	7805.5919	516	0.649	4.60	0.160	0.275	0.4 ± 0.2	0.2 ± 0.2	N
Feb 21	7806.5967	530	0.758	4.53	0.160	0.276	0.1 ± 0.2	−0.2 ± 0.3	N
Feb 22	7807.5591	526	0.863	4.58	0.162	0.275	1.4 ± 0.5	0.0 ± 0.5	N
Mar 01	7814.5545	526	1.623	4.66	0.161	0.275	1.0 ± 0.3	0.0 ± 0.3	M
Mar 08	7821.4747	493	2.375	4.63	0.162	0.275	3.0 ± 0.7	0.2 ± 0.7	M
Mar 14	7827.5549	494	3.036	4.56	0.161	0.276	0.2 ± 0.3	0.1 ± 0.3	N
Mar 15	7828.4753	563	3.136	4.57	0.159	0.276	0.3 ± 0.2	0.3 ± 0.2	N
Mar 16	7829.4932	525	3.247	4.60	0.160	0.275	0.7 ± 0.2	0.2 ± 0.2	N
Mar 18	7831.5311	529	3.468	4.62	0.157	0.273	0.8 ± 0.2	−0.4 ± 0.2	M
Mar 28	7841.4796	538	4.550	4.58	0.160	0.276	0.5 ± 0.2	0.3 ± 0.2	N
Mar 29	7842.4860	554	4.659	4.59	0.160	0.276	1.3 ± 0.2	0.0 ± 0.2	M
Apr 03	7847.3993	554	5.193	4.56	0.163	0.276	1.0 ± 0.2	0.1 ± 0.2	D
Apr 03	7847.4124	543	5.195	4.55	0.163	0.276	1.6 ± 0.6	0.2 ± 0.6	M
Apr 06	7850.4794	505	5.528	4.59	0.163	0.276	1.0 ± 0.6	0.2 ± 0.6	N
Apr 06	7850.4925	512	5.529	4.58	0.164	0.276	0.8 ± 0.4	−0.1 ± 0.4	N
Apr 07	7851.4844	523	5.637	4.59	0.162	0.276	0.3 ± 0.2	0.1 ± 0.2	N
Apr 07	7851.4974	521	5.639	4.59	0.163	0.276	1.6 ± 0.7	0.4 ± 0.7	N
Apr 08	7852.4197	559	5.739	4.60	0.166	0.275	0.7 ± 0.2	−0.3 ± 0.2	N
Apr 08	7852.4328	561	5.740	4.61	0.166	0.275	0.6 ± 0.3	0.0 ± 0.3	N
Apr 10	7854.5044	514	5.966	4.61	0.162	0.275	1.7 ± 0.4	−0.2 ± 0.4	D
Apr 10	7854.5174	499	5.967	4.61	0.163	0.275	2.4 ± 0.7	−0.5 ± 0.7	D
Apr 11	7855.4529	535	6.069	4.60	0.162	0.274	1.0 ± 0.2	−0.3 ± 0.2	D
Apr 11	7855.4660	522	6.070	4.60	0.162	0.275	2.0 ± 0.6	0.2 ± 0.6	D
Apr 12	7856.4745	524	6.180	4.61	0.163	0.276	3.1 ± 0.6	−0.4 ± 0.6	D
Apr 12	7856.4878	518	6.181	4.62	0.164	0.276	1.1 ± 0.4	−0.1 ± 0.4	D
Apr 16	7860.4455	552	6.611	4.58	0.162	0.276	0.8 ± 0.3	−0.2 ± 0.3	D
Apr 16	7860.4586	555	6.613	4.58	0.163	0.276	0.9 ± 0.3	0.3 ± 0.3	N
Apr 17	7861.3953	546	6.715	4.59	0.162	0.276	0.5 ± 0.2	0.0 ± 0.2	M
Apr 17	7861.4083	559	6.716	4.59	0.161	0.276	0.3 ± 0.2	−0.1 ± 0.2	N
Apr 19	7863.4659	555	6.940	4.52	0.162	0.276	1.7 ± 0.6	0.4 ± 0.6	N
Apr 19	7863.4790	552	6.941	4.52	0.161	0.277	0.9 ± 0.3	−0.1 ± 0.3	N
Apr 20	7864.3500	550	7.036	4.56	0.162	0.277	1.5 ± 0.3	0.2 ± 0.3	D
Apr 20	7864.3631	553	7.037	4.56	0.162	0.277	1.4 ± 0.2	0.0 ± 0.2	D
Apr 21	7865.4823	518	7.159	4.61	0.164	0.277	1.3 ± 0.3	−0.4 ± 0.3	M
Apr 21	7865.4954	518	7.160	4.61	0.164	0.277	2.7 ± 0.8	0.0 ± 0.8	D
Apr 22	7866.3487	543	7.253	4.60	0.164	0.276	1.1 ± 0.5	0.1 ± 0.5	D
Apr 22	7866.3618	555	7.254	4.60	0.164	0.276	1.3 ± 0.3	0.2 ± 0.3	D
Apr 23	7867.4269	549	7.370	4.62	0.164	0.276	1.7 ± 0.3	0.3 ± 0.3	D
Apr 23	7867.4399	553	7.372	4.62	0.163	0.276	1.2 ± 0.3	0.0 ± 0.3	D
Apr 24	7868.3968	512	7.476	4.66	0.165	0.275	1.5 ± 0.2	−0.1 ± 0.2	D
Apr 24	7868.4100	512	7.477	4.66	0.164	0.275	1.8 ± 0.2	−0.2 ± 0.2	D

Date 2017

HJD

SNR

Rot.

S-index

H α-index

B_l

N_l

Det.

(local time)

2450000+

Stokes I

cycle

(km s⁻¹)

(G)

N,M,D

Feb 14

7799.6214

534

0.000

4.54

0.162

0.275

1.3 ± 0.4

0.0 ± 0.4

Feb 15

7800.6362

548

0.110

4.53

0.161

0.275

0.9 ± 0.3

0.1 ± 0.3

Feb 16

7801.5917

548

0.214

4.52

0.162

0.275

0.5 ± 0.2

0.1 ± 0.2

Feb 17

7802.6201

548

0.326

4.57

0.162

0.274

0.6 ± 0.3

0.3 ± 0.3

Feb 18

7803.6170

543

0.434

4.54

0.162

0.275

0.9 ± 0.3

−0.2 ± 0.3

Feb 19

7804.5554

540

0.536

4.50

0.161

0.276

0.4 ± 0.3

−0.4 ± 0.3

Feb 20

7805.5919

516

0.649

4.60

0.160

0.275

0.4 ± 0.2

0.2 ± 0.2

Feb 21

7806.5967

530

0.758

4.53

0.160

0.276

0.1 ± 0.2

−0.2 ± 0.3

Feb 22

7807.5591

526

0.863

4.58

0.162

0.275

1.4 ± 0.5

0.0 ± 0.5

Mar 01

7814.5545

526

1.623

4.66

0.161

0.275

1.0 ± 0.3

0.0 ± 0.3

Mar 08

7821.4747

493

2.375

4.63

0.162

0.275

3.0 ± 0.7

0.2 ± 0.7

Mar 14

7827.5549

494

3.036

4.56

0.161

0.276

0.2 ± 0.3

0.1 ± 0.3

Mar 15

7828.4753

563

3.136

4.57

0.159

0.276

0.3 ± 0.2

Mar 16

7829.4932

525

3.247

4.60

0.160

0.275

0.7 ± 0.2

0.2 ± 0.2

Mar 18

7831.5311

529

3.468

4.62

0.157

0.273

0.8 ± 0.2

−0.4 ± 0.2

Mar 28

7841.4796

538

4.550

4.58

0.160

0.276

0.5 ± 0.2

0.3 ± 0.2

Mar 29

7842.4860

554

4.659

4.59

0.160

0.276

1.3 ± 0.2

0.0 ± 0.2

Apr 03

7847.3993

554

5.193

4.56

0.163

0.276

1.0 ± 0.2

0.1 ± 0.2

Apr 03

7847.4124

543

5.195

4.55

0.163

0.276

1.6 ± 0.6

0.2 ± 0.6

Apr 06

7850.4794

505

5.528

4.59

0.163

0.276

1.0 ± 0.6

0.2 ± 0.6

Apr 06

7850.4925

512

5.529

4.58

0.164

0.276

0.8 ± 0.4

−0.1 ± 0.4

Apr 07

7851.4844

523

5.637

4.59

0.162

0.276

0.3 ± 0.2

0.1 ± 0.2

Apr 07

7851.4974

521

5.639

4.59

0.163

0.276

1.6 ± 0.7

0.4 ± 0.7

Apr 08

7852.4197

559

5.739

4.60

0.166

0.275

0.7 ± 0.2

−0.3 ± 0.2

Apr 08

7852.4328

561

5.740

4.61

0.166

0.275

0.6 ± 0.3

0.0 ± 0.3

Apr 10

7854.5044

514

5.966

4.61

0.162

0.275

1.7 ± 0.4

−0.2 ± 0.4

Apr 10

7854.5174

499

5.967

4.61

0.163

0.275

2.4 ± 0.7

−0.5 ± 0.7

Apr 11

7855.4529

535

6.069

4.60

0.162

0.274

1.0 ± 0.2

−0.3 ± 0.2

Apr 11

7855.4660

522

6.070

4.60

0.162

0.275

2.0 ± 0.6

0.2 ± 0.6

Apr 12

7856.4745

524

6.180

4.61

0.163

0.276

3.1 ± 0.6

−0.4 ± 0.6

Apr 12

7856.4878

518

6.181

4.62

0.164

0.276

1.1 ± 0.4

−0.1 ± 0.4

Apr 16

7860.4455

552

6.611

4.58

0.162

0.276

0.8 ± 0.3

−0.2 ± 0.3

Apr 16

7860.4586

555

6.613

4.58

0.163

0.276

0.9 ± 0.3

0.3 ± 0.3

Apr 17

7861.3953

546

6.715

4.59

0.162

0.276

0.5 ± 0.2

0.0 ± 0.2

Apr 17

7861.4083

559

6.716

4.59

0.161

0.276

0.3 ± 0.2

−0.1 ± 0.2

Apr 19

7863.4659

555

6.940

4.52

0.162

0.276

1.7 ± 0.6

0.4 ± 0.6

Apr 19

7863.4790

552

6.941

4.52

0.161

0.277

0.9 ± 0.3

−0.1 ± 0.3

Apr 20

7864.3500

550

7.036

4.56

0.162

0.277

1.5 ± 0.3

0.2 ± 0.3

Apr 20

7864.3631

553

7.037

4.56

0.162

0.277

1.4 ± 0.2

0.0 ± 0.2

Apr 21

7865.4823

518

7.159

4.61

0.164

0.277

1.3 ± 0.3

−0.4 ± 0.3

Apr 21

7865.4954

518

7.160

4.61

0.164

0.277

2.7 ± 0.8

0.0 ± 0.8

Apr 22

7866.3487

543

7.253

4.60

0.164

0.276

1.1 ± 0.5

0.1 ± 0.5

Apr 22

7866.3618

555

7.254

4.60

0.164

0.276

1.3 ± 0.3

0.2 ± 0.3

Apr 23

7867.4269

549

7.370

4.62

0.164

0.276

1.7 ± 0.3

0.3 ± 0.3

Apr 23

7867.4399

553

7.372

4.62

0.163

0.276

1.2 ± 0.3

0.0 ± 0.3

Apr 24

7868.3968

512

7.476

4.66

0.165

0.275

1.5 ± 0.2

−0.1 ± 0.2

Apr 24

7868.4100

512

7.477

4.66

0.164

0.275

1.8 ± 0.2

−0.2 ± 0.2

Table 1.

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Journal of observations and magnetic detection for β Vir LSD profiles in 2017, showing date and time of the observation, Stokes I profile SNR, rotation cycle with respect to observations starting at HJD = 2457799.6214, radial velocity (RV), chromospheric activity (S-index and H α-index), longitudinal magnetic field (B_l), null value (N_l), and magnetic detection flag for the presence of a magnetic field in individual LSD profiles where D is a definite detection, M is marginal, and N is no detection. The Stokes V observations consist of a sequence of four subexposures as described in section. The RV is calculated using the centre of gravity method on the Stokes I profiles. The mean RV of our observations is 4.588 ± 0.013 km s⁻¹. For magnetic mapping, we assume a constant RV of 4.6 km s⁻¹.

Date 2017	HJD	SNR	Rot.	RV	S-index	H α-index	B_l	N_l	Det.
(local time)	2450000+	Stokes I	cycle	(km s⁻¹)			(G)	(G)	N,M,D
Feb 14	7799.6214	534	0.000	4.54	0.162	0.275	1.3 ± 0.4	0.0 ± 0.4	M
Feb 15	7800.6362	548	0.110	4.53	0.161	0.275	0.9 ± 0.3	0.1 ± 0.3	N
Feb 16	7801.5917	548	0.214	4.52	0.162	0.275	0.5 ± 0.2	0.1 ± 0.2	N
Feb 17	7802.6201	548	0.326	4.57	0.162	0.274	0.6 ± 0.3	0.3 ± 0.3	N
Feb 18	7803.6170	543	0.434	4.54	0.162	0.275	0.9 ± 0.3	−0.2 ± 0.3	N
Feb 19	7804.5554	540	0.536	4.50	0.161	0.276	0.4 ± 0.3	−0.4 ± 0.3	N
Feb 20	7805.5919	516	0.649	4.60	0.160	0.275	0.4 ± 0.2	0.2 ± 0.2	N
Feb 21	7806.5967	530	0.758	4.53	0.160	0.276	0.1 ± 0.2	−0.2 ± 0.3	N
Feb 22	7807.5591	526	0.863	4.58	0.162	0.275	1.4 ± 0.5	0.0 ± 0.5	N
Mar 01	7814.5545	526	1.623	4.66	0.161	0.275	1.0 ± 0.3	0.0 ± 0.3	M
Mar 08	7821.4747	493	2.375	4.63	0.162	0.275	3.0 ± 0.7	0.2 ± 0.7	M
Mar 14	7827.5549	494	3.036	4.56	0.161	0.276	0.2 ± 0.3	0.1 ± 0.3	N
Mar 15	7828.4753	563	3.136	4.57	0.159	0.276	0.3 ± 0.2	0.3 ± 0.2	N
Mar 16	7829.4932	525	3.247	4.60	0.160	0.275	0.7 ± 0.2	0.2 ± 0.2	N
Mar 18	7831.5311	529	3.468	4.62	0.157	0.273	0.8 ± 0.2	−0.4 ± 0.2	M
Mar 28	7841.4796	538	4.550	4.58	0.160	0.276	0.5 ± 0.2	0.3 ± 0.2	N
Mar 29	7842.4860	554	4.659	4.59	0.160	0.276	1.3 ± 0.2	0.0 ± 0.2	M
Apr 03	7847.3993	554	5.193	4.56	0.163	0.276	1.0 ± 0.2	0.1 ± 0.2	D
Apr 03	7847.4124	543	5.195	4.55	0.163	0.276	1.6 ± 0.6	0.2 ± 0.6	M
Apr 06	7850.4794	505	5.528	4.59	0.163	0.276	1.0 ± 0.6	0.2 ± 0.6	N
Apr 06	7850.4925	512	5.529	4.58	0.164	0.276	0.8 ± 0.4	−0.1 ± 0.4	N
Apr 07	7851.4844	523	5.637	4.59	0.162	0.276	0.3 ± 0.2	0.1 ± 0.2	N
Apr 07	7851.4974	521	5.639	4.59	0.163	0.276	1.6 ± 0.7	0.4 ± 0.7	N
Apr 08	7852.4197	559	5.739	4.60	0.166	0.275	0.7 ± 0.2	−0.3 ± 0.2	N
Apr 08	7852.4328	561	5.740	4.61	0.166	0.275	0.6 ± 0.3	0.0 ± 0.3	N
Apr 10	7854.5044	514	5.966	4.61	0.162	0.275	1.7 ± 0.4	−0.2 ± 0.4	D
Apr 10	7854.5174	499	5.967	4.61	0.163	0.275	2.4 ± 0.7	−0.5 ± 0.7	D
Apr 11	7855.4529	535	6.069	4.60	0.162	0.274	1.0 ± 0.2	−0.3 ± 0.2	D
Apr 11	7855.4660	522	6.070	4.60	0.162	0.275	2.0 ± 0.6	0.2 ± 0.6	D
Apr 12	7856.4745	524	6.180	4.61	0.163	0.276	3.1 ± 0.6	−0.4 ± 0.6	D
Apr 12	7856.4878	518	6.181	4.62	0.164	0.276	1.1 ± 0.4	−0.1 ± 0.4	D
Apr 16	7860.4455	552	6.611	4.58	0.162	0.276	0.8 ± 0.3	−0.2 ± 0.3	D
Apr 16	7860.4586	555	6.613	4.58	0.163	0.276	0.9 ± 0.3	0.3 ± 0.3	N
Apr 17	7861.3953	546	6.715	4.59	0.162	0.276	0.5 ± 0.2	0.0 ± 0.2	M
Apr 17	7861.4083	559	6.716	4.59	0.161	0.276	0.3 ± 0.2	−0.1 ± 0.2	N
Apr 19	7863.4659	555	6.940	4.52	0.162	0.276	1.7 ± 0.6	0.4 ± 0.6	N
Apr 19	7863.4790	552	6.941	4.52	0.161	0.277	0.9 ± 0.3	−0.1 ± 0.3	N
Apr 20	7864.3500	550	7.036	4.56	0.162	0.277	1.5 ± 0.3	0.2 ± 0.3	D
Apr 20	7864.3631	553	7.037	4.56	0.162	0.277	1.4 ± 0.2	0.0 ± 0.2	D
Apr 21	7865.4823	518	7.159	4.61	0.164	0.277	1.3 ± 0.3	−0.4 ± 0.3	M
Apr 21	7865.4954	518	7.160	4.61	0.164	0.277	2.7 ± 0.8	0.0 ± 0.8	D
Apr 22	7866.3487	543	7.253	4.60	0.164	0.276	1.1 ± 0.5	0.1 ± 0.5	D
Apr 22	7866.3618	555	7.254	4.60	0.164	0.276	1.3 ± 0.3	0.2 ± 0.3	D
Apr 23	7867.4269	549	7.370	4.62	0.164	0.276	1.7 ± 0.3	0.3 ± 0.3	D
Apr 23	7867.4399	553	7.372	4.62	0.163	0.276	1.2 ± 0.3	0.0 ± 0.3	D
Apr 24	7868.3968	512	7.476	4.66	0.165	0.275	1.5 ± 0.2	−0.1 ± 0.2	D
Apr 24	7868.4100	512	7.477	4.66	0.164	0.275	1.8 ± 0.2	−0.2 ± 0.2	D

Date 2017	HJD	SNR	Rot.	RV	S-index	H α-index	B_l	N_l	Det.
(local time)	2450000+	Stokes I	cycle	(km s⁻¹)			(G)	(G)	N,M,D
Feb 14	7799.6214	534	0.000	4.54	0.162	0.275	1.3 ± 0.4	0.0 ± 0.4	M
Feb 15	7800.6362	548	0.110	4.53	0.161	0.275	0.9 ± 0.3	0.1 ± 0.3	N
Feb 16	7801.5917	548	0.214	4.52	0.162	0.275	0.5 ± 0.2	0.1 ± 0.2	N
Feb 17	7802.6201	548	0.326	4.57	0.162	0.274	0.6 ± 0.3	0.3 ± 0.3	N
Feb 18	7803.6170	543	0.434	4.54	0.162	0.275	0.9 ± 0.3	−0.2 ± 0.3	N
Feb 19	7804.5554	540	0.536	4.50	0.161	0.276	0.4 ± 0.3	−0.4 ± 0.3	N
Feb 20	7805.5919	516	0.649	4.60	0.160	0.275	0.4 ± 0.2	0.2 ± 0.2	N
Feb 21	7806.5967	530	0.758	4.53	0.160	0.276	0.1 ± 0.2	−0.2 ± 0.3	N
Feb 22	7807.5591	526	0.863	4.58	0.162	0.275	1.4 ± 0.5	0.0 ± 0.5	N
Mar 01	7814.5545	526	1.623	4.66	0.161	0.275	1.0 ± 0.3	0.0 ± 0.3	M
Mar 08	7821.4747	493	2.375	4.63	0.162	0.275	3.0 ± 0.7	0.2 ± 0.7	M
Mar 14	7827.5549	494	3.036	4.56	0.161	0.276	0.2 ± 0.3	0.1 ± 0.3	N
Mar 15	7828.4753	563	3.136	4.57	0.159	0.276	0.3 ± 0.2	0.3 ± 0.2	N
Mar 16	7829.4932	525	3.247	4.60	0.160	0.275	0.7 ± 0.2	0.2 ± 0.2	N
Mar 18	7831.5311	529	3.468	4.62	0.157	0.273	0.8 ± 0.2	−0.4 ± 0.2	M
Mar 28	7841.4796	538	4.550	4.58	0.160	0.276	0.5 ± 0.2	0.3 ± 0.2	N
Mar 29	7842.4860	554	4.659	4.59	0.160	0.276	1.3 ± 0.2	0.0 ± 0.2	M
Apr 03	7847.3993	554	5.193	4.56	0.163	0.276	1.0 ± 0.2	0.1 ± 0.2	D
Apr 03	7847.4124	543	5.195	4.55	0.163	0.276	1.6 ± 0.6	0.2 ± 0.6	M
Apr 06	7850.4794	505	5.528	4.59	0.163	0.276	1.0 ± 0.6	0.2 ± 0.6	N
Apr 06	7850.4925	512	5.529	4.58	0.164	0.276	0.8 ± 0.4	−0.1 ± 0.4	N
Apr 07	7851.4844	523	5.637	4.59	0.162	0.276	0.3 ± 0.2	0.1 ± 0.2	N
Apr 07	7851.4974	521	5.639	4.59	0.163	0.276	1.6 ± 0.7	0.4 ± 0.7	N
Apr 08	7852.4197	559	5.739	4.60	0.166	0.275	0.7 ± 0.2	−0.3 ± 0.2	N
Apr 08	7852.4328	561	5.740	4.61	0.166	0.275	0.6 ± 0.3	0.0 ± 0.3	N
Apr 10	7854.5044	514	5.966	4.61	0.162	0.275	1.7 ± 0.4	−0.2 ± 0.4	D
Apr 10	7854.5174	499	5.967	4.61	0.163	0.275	2.4 ± 0.7	−0.5 ± 0.7	D
Apr 11	7855.4529	535	6.069	4.60	0.162	0.274	1.0 ± 0.2	−0.3 ± 0.2	D
Apr 11	7855.4660	522	6.070	4.60	0.162	0.275	2.0 ± 0.6	0.2 ± 0.6	D
Apr 12	7856.4745	524	6.180	4.61	0.163	0.276	3.1 ± 0.6	−0.4 ± 0.6	D
Apr 12	7856.4878	518	6.181	4.62	0.164	0.276	1.1 ± 0.4	−0.1 ± 0.4	D
Apr 16	7860.4455	552	6.611	4.58	0.162	0.276	0.8 ± 0.3	−0.2 ± 0.3	D
Apr 16	7860.4586	555	6.613	4.58	0.163	0.276	0.9 ± 0.3	0.3 ± 0.3	N
Apr 17	7861.3953	546	6.715	4.59	0.162	0.276	0.5 ± 0.2	0.0 ± 0.2	M
Apr 17	7861.4083	559	6.716	4.59	0.161	0.276	0.3 ± 0.2	−0.1 ± 0.2	N
Apr 19	7863.4659	555	6.940	4.52	0.162	0.276	1.7 ± 0.6	0.4 ± 0.6	N
Apr 19	7863.4790	552	6.941	4.52	0.161	0.277	0.9 ± 0.3	−0.1 ± 0.3	N
Apr 20	7864.3500	550	7.036	4.56	0.162	0.277	1.5 ± 0.3	0.2 ± 0.3	D
Apr 20	7864.3631	553	7.037	4.56	0.162	0.277	1.4 ± 0.2	0.0 ± 0.2	D
Apr 21	7865.4823	518	7.159	4.61	0.164	0.277	1.3 ± 0.3	−0.4 ± 0.3	M
Apr 21	7865.4954	518	7.160	4.61	0.164	0.277	2.7 ± 0.8	0.0 ± 0.8	D
Apr 22	7866.3487	543	7.253	4.60	0.164	0.276	1.1 ± 0.5	0.1 ± 0.5	D
Apr 22	7866.3618	555	7.254	4.60	0.164	0.276	1.3 ± 0.3	0.2 ± 0.3	D
Apr 23	7867.4269	549	7.370	4.62	0.164	0.276	1.7 ± 0.3	0.3 ± 0.3	D
Apr 23	7867.4399	553	7.372	4.62	0.163	0.276	1.2 ± 0.3	0.0 ± 0.3	D
Apr 24	7868.3968	512	7.476	4.66	0.165	0.275	1.5 ± 0.2	−0.1 ± 0.2	D
Apr 24	7868.4100	512	7.477	4.66	0.164	0.275	1.8 ± 0.2	−0.2 ± 0.2	D

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