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Spatially Resolved Kinematics of Binary QuasarCandidates

IFU Spectroscopy with VIMOS/VLT

Ivana Stoklasová–Orlitová

Astronomical Institute, Academy of Sciences, Prague, Czech Republic

In collaboration with:B. Jungwiert, T. Skalická, M.Krížek, L. Jílková, I. Ebrová, K. Bartošková

Introduction: Binary Quasar Candidates in SDSS

Double-peaked [O III] lines in SDSSe. g. Liu et al. (2010a), Smith et al. (2010)Follow-up observations:NIR and optical imaging, slit spectroscopy, IFU spectroscopy(Rosario et al. 2011; Liu et al. 2010b; Shen et al. 2011; Fu et al. 2012)

Liu et al. (2010) Liu et al. (2010)

Our VIMOS/VLT observations (2010)Stoklasová (PI), Jungwiert, Bartáková, Bartošková, Ebrová, Jílková, Krížek

Targets:Selected 5 low-z targets (pilot study) from Liu et al. (2010a)Selection by redshift (0.03 < z < 0.07), luminosity and RA

Goals:Observe selected candidates with VIMOSDerive spatial kinematics and [O III]/H! ratioInterpretation – detailed exploration of 3D data cubes

binary AGNrotation, outflow (double-peaked lines frequent in Seyferts)projection of two galaxies along LOS

VIMOS/VLT observationsESO program number 085.B-0669

Targets:SDSS J144804.17+182537.8 ! Q1418SDSS J151659.24+051751.5 ! Q1505SDSS J155619.29+094855.5 ! Q1509SDSS J163056.75+164957.1 ! Q1616SDSS J230442.82–093345.2 ! Q23–09

Observations in spring/summer 2010High-resolution spatial sampling 0.33"/pixelSeeing 0.6" – 0.8" (i. e. resolution " 0.5 – 1 kpc)FOV: 13" # 13"High spectral resolution (R = 2550, dispersion 0.51 Å/pixel)– resolution 120 km/sSpectral range 4 150 – 6200 Å (HR blue grism) – [O III], H!

Integration 8 # 1000 s for each targetWe have approx. 300 resultant emission spectra per target

VIMOS – Stellar continuumCentral 2 – 3 kpc

Q1418

z = 0.0378

1"= 0.75 kpc

Q1509

z = 0.0678

1" =1.3 kpc

Q1418 Continuum 4000 - 6000 A

-1 0 1 2 3arcsec

-3.0

-2.0

-1.0

0.0

1.0arc

sec

200.0

400.0

600.0

800.0

1000.0

1200.0

1400.0

1600.0

1800.0

Q1505 Continuum 4000 - 6000 A

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

200.0

400.0

600.0

800.0

1000.0

1200.0

Q1509 Continuum 4000 - 6000 A

-1.0 0.0 1.0 2.0 3.0arcsec

-2.0

-1.0

0.0

1.0

arc

sec

500.0

1000.0

1500.0

2000.0

Q1616 Continuum 4000 - 6000 A

-1.0 0.0 1.0 2.0arcsec

-1.0

0.0

1.0

arc

sec

500.0

1000.0

1500.0

2000.0

Q1505

z = 0.0512

1" =1 kpc

Q1616

z = 0.0341

1" =0.67 kpc

VIMOS – [O III] Emission mapsAligned with continuum, extent: ! 1.5– 3 kpc

Q1418

z = 0.0378

1"= 0.75 kpc

Q1509

z = 0.0678

1" =1.3 kpc

Intensity in [OIII] 5007, both comp’s

-1 0 1 2 3arcsec

-3.0

-2.0

-1.0

0.0

1.0arc

sec

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

9.0

Intensity in [OIII] 5007

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

5.0

10.0

15.0

20.0


-1.0 0.0 1.0 2.0 3.0arcsec

-2.0

-1.0

0.0

1.0

arc

sec

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0


-1.0 0.0 1.0 2.0arcsec

-1.0

0.0

1.0

arc

sec

5.0

10.0

15.0

20.0

25.0

30.0

Q1505

z = 0.0512

1" =1 kpc

Q1616

z = 0.0341

1" =0.67 kpc

VIMOS – [O III] spectra integrated over FOVDiagnostics following Blecha et al. (2012) and Smith et al. (2011)Peak separation [km/s]: 270, 400, 400, 300Centroid offset from vsys [km/s]: 8, 1, 18, 46 (" no BH influence?)Ratios of peak fluxes: 0.7, 0.7, 0.7, 0.9 (" no BH influence?)

q1418, FOV-integ. spectrum -- [OIII]

5140 5160 5180 5200 5220wavelength [A]

150

200

250

300

350

400

450

500

flux


5200 5220 5240 5260 5280 5300wavelength [A]

100

200

300

400

500

600

700

flux


5280 5300 5320 5340 5360 5380wavelength [A]

150

200

250

300

350

400

450

flux


5120 5140 5160 5180 5200wavelength [A]

100

200

300

400

500

600

700

800

900flux

VIMOS - [O III] spectra spatially resolved

Spectral line profiles: from simple narrow to complex

Q1505

Spec No.4

5170 5220 52700

10

20

30Spec No.200

5170 5220 52700

1

2

3

Spec No.77

5170 5220 52700.5

1.5

2.5Spec No.93

5170 5220 52700.6

1.0

1.4

1.8

2.2

2.6

Q1509

Spec No.54

5270 5320 5370

2

6

10Spec No.64

5270 5320 53700

4

8

12

16

Spec No.82

5270 5320 53701.0

1.4

1.8

2.2

2.6 Spec No.92

5270 5320 53701

2

3

4

VIMOS – Q1505J151659+051752, z = 0.0512, 1" = 3 pixels = 1 kpc

Q1505 Continuum 4000 - 6000 A

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

200.0

400.0

600.0

800.0

1000.0

1200.0

Intensity in [OIII] 5007

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

5.0

10.0

15.0

20.0

Mean LOS velocity in [OIII] 5007

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-200.0

-100.0

0.0

100.0

200.0

FWHM of [OIII] 5007

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

100.0

200.0

300.0

400.0

500.0

Theoretical I, v, ! mapsCode by Jugwiert et al. (2007)

Velocity maxima off-axis:in elliptical rotation, or circular rotation + outflow

Rotating disk – flat vr Elliptical rotation

Expanding disk Outflow in a cone

VIMOS – Q15051D velocity profiles along “slits”

Radial profiles indicate rotation

Velocity [OIII] PA=-45.0

-3 -2 -1 0 1 2 3 4R [arcsec]

-200

-100

0

100

200

Velo

city

[km

/s]

Velocity [OIII] PA=-25.0

-4 -3 -2 -1 0 1 2 3R [arcsec]

-200

-100

0

100

200

Velo

city

[km

/s]

VIMOS – Q1505Velocity channel maps for [O III] 5007

Range: (– 440,420) km/s1 channel: 60 km/s

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1arc

sec

-1 0 1 2 3 4arcsec

-3

-2

-1

0

1

arc

sec

Theoretical velocity channel mapsRotating disk – flat vr

Outflow in Disk (-1000,-800) km/s

0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec

Outflow in Disk (-200,0) km/s

0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec

Outflow in Disk (0,200) km/s

0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec


0 10 20 30 40arcsec

5

10

15

20

25

30

35

40

arc

sec

Outflow in a hollow cone

Theoretical velocity channel maps

Elliptical rotating disk

VIMOS – Q1505Position-velocity diagrams

P-V diagram for [OIII] 5007, PA = -45 deg

-3 -2 -1 0 1 2 3

arcsec-542

-324

-106

111

329

velo

city

[km

/s]

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

P-V diagram for [OIII] 5007, PA = -25 deg

-3 -2 -1 0 1 2 3

arcsec-542

-324

-106

111

329

velo

city

[km

/s]

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

P-V diagram for [OIII] 5007, PA = 45 deg

-3 -2 -1 0 1 2 3

arcsec-542

-324

-106

111

329

velo

city

[km

/s]

0.5

1.0

1.5

2.0

2.5

3.0

P-V diagram for [OIII] 5007, PA = 90 deg

-3 -2 -1 0 1 2 3

arcsec-542

-324

-106

111

329

velo

city

[km

/s]

0.5

1.0

1.5

2.0

2.5

3.0

Theoretical position-velocity diagrams

Rotating disk (flat vr)

PA = 0, 30, 60, 90

Expanding disk

PA = 0, 30, 60, 90

Theoretical position-velocity diagrams

Elliptical disk Outflow in a hollow conePA = 0 PA = 10

-30 -20 -10 0 10 20 30

R0

2

4

6

8

10

12

14

16

V

-30 -20 -10 0 10 20 30

R0

2

4

6

8

10

12

14

16

V

PA = 20 PA = 30

-30 -20 -10 0 10 20 30

R0

2

4

6

8

10

12

14

16

V

-30 -20 -10 0 10 20 30

R0

2

4

6

8

10

12

14

16

V

PA = 40 PA = 50

-30 -20 -10 0 10 20 30

R0

2

4

6

8

10

12

14

16

V

-30 -20 -10 0 10 20 30

R0

2

4

6

8

10

12

14

16

V

VIMOS – Q1505[O III]/H!

[O III]/H! > 3, i. e. high excitation (AGN)

[O III]5007 /H! map [O III]5007 /H! radial graph

Ratio [OIII] 5007 / Hb

-1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5arcsec

-3

-2

-1

0

1

arc

sec

5.0

10.0

15.0

20.0

[OIII] 5007 / H_beta, q1505

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5R [arcsec]

0

5

10

15

20

25

30

35

40

[OIII]

50

07

/ H

_beta

indiv. spaxels - recedingindiv. spaxels - approachingFOV-integ. spectrum - system 1FOV-integ. spectrum - system 2Ho et al. (1997)

Q1505 – InterpretationElliptical ring (r = 2.5 kpc)?

2 emission-line regions (5 kpc sepation),– off-centered, but aligned with continuumHigh excitation ([O III]/H!)Simple narrow lines (200 km/s)FOV spectrum double-peakedVelocity map: rotation (?), maxima off-axis1D rotation curve at PA = – 45 degVelocity channel maps: do not have the “V-shapes” typicalof rotation. Effect of resolution?P-V diagrams: rotation (?)FWHM different in the two parts of the ring

VIMOS – Other targets

Q1509

I [OIII] comp1 comp2 v [OIII] comp1 comp2 FWHM [OIII] comp1 comp2Intensity in [OIII] 5007, blue comp

-1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0arcsec

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

Mean LOS vel. in [OIII] 5007, blue comp

-1.0-0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5arcsec

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

-300.0

-250.0

-200.0

-150.0

-100.0

FWHM of [OIII] 5007, blue comp

-1.0-0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5arcsec

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

100.0

150.0

200.0

250.0

Intensity in [OIII] 5007, red comp

-1.0-0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5arcsec

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

2.0

4.0

6.0

8.0

10.0

12.0

Mean LOS vel. in [OIII] 5007, red comp

-1.0-0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5arcsec

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

100.0

120.0

140.0

160.0

180.0

200.0

FWHM of [OIII] 5007, red comp

-1.0-0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5arcsec

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

100.0

150.0

200.0

250.0


Q1418


-1 0 1 2 3arcsec

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

arc

sec

1.0

2.0

3.0

4.0

5.0

6.0


-1 0 1 2 3arcsec

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

arc

sec

-200.0

-150.0

-100.0

-50.0

0.0

50.0

100.0

150.0FWHM of [OIII] 5007, blue comp

-1 0 1 2 3arcsec

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

arc

sec

100.0

150.0

200.0

250.0

300.0

350.0


-1 0 1 2 3arcsec

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

arc

sec

1.0

2.0

3.0

4.0

5.0

6.0Mean LOS vel. in [OIII] 5007, red comp

-1 0 1 2 3arcsec

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

arc

sec

80.0

100.0

120.0

140.0

160.0


-1 0 1 2 3arcsec

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

arc

sec

150.0

200.0

250.0

300.0

350.0


Q1616


-1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5arcsec

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

5.0

10.0

15.0

20.0


-1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5arcsec

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

-200.0

-180.0

-160.0

-140.0

-120.0

-100.0

-80.0

-60.0

FWHM of [OIII] 5007, blue comp

-1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5arcsec

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

100.0

150.0

200.0

250.0


-1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5arcsec

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

5.0

10.0

15.0

20.0

25.0

Mean LOS vel. in [OIII] 5007, red comp

-1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5arcsec

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

70.0

80.0

90.0

100.0

110.0

120.0

130.0

140.0


-1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5arcsec

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

arc

sec

100.0

150.0

200.0

250.0

300.0

350.0

400.0

VIMOS – Summary of results

No obvious binary sources in continuum emission! study in more detail[O III] emission 2– 3 kpc, mostly aligned with continuum2 kinematic components overlap in spaceDouble-peaked [O III] 5007, H! in spatially resolvedspectraSigns of rotation (?)[O III] / Hb ratio generally high

Further exploration of VIMOS data

Explore the velocity spacemore kinematic models, more realisticinclude overlapping NLRs from 2 AGNuse all the possible mappings (I, v, FWHM, channel maps,p-v diagrams) to determine best-fitting modelFourier decomposition (kinemetry, Krajnovic et al. 2006)

Combine gas emission data with stellar continuumLook for disturbed morphologies indicating mergersAbsorption lines (e.g. Mg 5170) and the 4000Å jump! derive stellar kinematics, population ages

Search for other emission linese. g. [O III] 4363Å! derive temperature

Kinematic modellingSuperposed components

Surf.br. Mean vLOS LOS vel.disp.

Line 1: Conical outflow in rotating disk

Line 2: Two mis-inclined off-centered rotating disks

[O III]/H" ratios

[OIII] 5007 / H_beta, q1418

0.0 0.5 1.0 1.5 2.0R [arcsec]

0

5

10

15

20

25

30

35

40

[OIII]

50

07

/ H

_beta

indiv. spaxelsindiv. spaxelsFOV-integrated spectrumFOV-integrated spectrumHo et al. (1997)

[OIII] 5007 / H_beta, q1505

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5R [arcsec]

0

5

10

15

20

25

30

35

40

[OIII]

50

07

/ H

_beta

indiv. spaxels - recedingindiv. spaxels - approachingFOV-integ. spectrum - system 1FOV-integ. spectrum - system 2Ho et al. (1997)

[OIII] 5007 / H_beta, q1509

0.0 0.5 1.0 1.5 2.0R [arcsec]

0

5

10

15

20

25

30

35

[OIII]

50

07

/ H

_beta


[OIII] 5007 / H_beta, q1616

0.0 0.5 1.0 1.5 2.0R [arcsec]

0

5

10

15

20

25

30

35

[OIII]

50

07

/ H

_beta


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