Probing the CGM of Herschel-selected SMGs

PI: Hai Fu

Targets for Mar 2017 LRIS Run

Goal: Detect rest-frame UV lines from the SMG in G09_0913-0106 at z = 2.6745 and improve the QSO spectrum.

LRIS Setup:

Dichroic

Blue

Red

slit

D560

600

400 or 600

1"

Exposure Time: Spend ~60min total integration time on the target. Make sure we take at least two blue exposures to be confident about a potentially faint emission line detection.

Designation

RA_QSO

Dec_QSO

RA_SMG

Dec_SMG

g_QSO

sep(")

PA

z_QSO

z_SMG

Priority

G09_0913-0106

138.412375

-1.117975

138.414496

-1.115598

20.8

11.9

41.7

2.916

2.674

1

Finding Charts and Keck Starlist: The finding charts and the starlist file are in this zip file. Assuming the observer puts the b/g QSO at the slit B position, the long slit is illustrated using the geometry here. Blue square indicates the b/g QSO, orange circle the SMG, green square the offset star. Note the 14-arcsec chip gap.

Targets for Jan 2017 LRIS Run

Goal 1: Obtain spectroscopic redshifts for Herschel-SMGs that have 6GHz counterparts from VLA 16A.

Goal 2: Obtain high S/N absorption line spectra from background QSOs.

Strategy: Observe the QSO and the radio-ID'ed SMG simultaneously with a long slit.

LRIS Setup:

Dichroic

Blue

Red

slit

D560

600

600

1"

Exposure Time: Spend 45-60min total integration time on each target. Make sure we take at least two blue exposures to be confident about a potentially faint emission line detection.

The target list below only contains two top priority (=1) targets.

Designation

RA_QSO

Dec_QSO

RA_SMG

Dec_SMG

g_QSO

sep(")

PA

z_QSO

z_SMG

Priority

Done?

HerS_0117+0009

19.319418

0.149913

19.318469

0.152458

20.3

9.8

-20.4

2.766

-99.000

1

HerS_0142+0023

25.568361

0.391264

25.571723

0.388920

20.8

14.8

124.9

2.711

-99.000

1

Finding Charts and Keck Starlist: The finding charts and the starlist file are in this zip file. Assuming the observer puts the b/g QSO at the slit B position, the long slit is illustrated using the geometry here. Blue square indicates the b/g QSO, orange circle the SMG, green square the offset star. Note the 14-arcsec chip gap.


Targets for Sep 2016 LRIS Run

Goal 1: Obtain spectroscopic redshifts for Herschel-SMGs that have 6GHz counterparts from VLA 16A. Goal 2: Obtain high S/N absorption line spectra from background QSOs.

Strategy: Observe the QSO and the radio-ID'ed SMG simultaneously with a long slit.

LRIS Setup:

Dichroic

Blue

Red

slit

D560

600

600

1"

Exposure Time: Spend 45-60min total integration time on each target.

The target list below is sorted from the top priority (=1) to the lowest priority (=3).

Designation

RA_QSO

Dec_QSO

RA_SMG

Dec_SMG

g_QSO

sep(")

PA

z_QSO

z_SMG

Priority

Done?

HerS_0117+0009

19.319418

0.149913

19.318469

0.152458

20.3

9.8

-20.4

2.766

-99.000

1

HerS_0142+0023

25.568361

0.391264

25.571723

0.388920

20.8

14.8

124.9

2.711

-99.000

1

HeLMS_2339-0120

354.993981

-1.340282

354.988329

-1.340765

19.0

20.4

-94.9

2.675

-99.000

2

HeLMS_0017+0129

4.289391

1.484885

4.295104

1.486342

20.3

21.2

75.7

2.536

-99.000

2

HeLMS_2351-0739

357.802037

-7.658149

357.806258

-7.664622

20.6

27.7

147.1

2.645

-99.000

3

HeLMS_0026+0142

6.727059

1.718370

6.723948

1.710753

20.1

29.6

-157.8

2.572

-99.000

3

Finding Charts and Keck Starlist: The finding charts and the starlist file are in this zip file. Assuming the observer puts the b/g QSO at the slit B position, the long slit is illustrated using the geometry here. Blue square indicates the b/g QSO, orange circle the SMG, green square the offset star. Note the 14-arcsec chip gap.


Targets for Jan 2016 LRIS Run

Goal: Obtain high S/N absorption line spectra from background QSOs near spectroscopically identified SMGs.

LRIS Setup:

Dichroic

Blue

Red

slit

D560

600

600

1"

The Keck starlist is here. The visibility plot is here

Designation

RA_QSO

Dec_QSO

RA_SMG

Dec_SMG

g_QSO

sep(")

PA

z_QSO

z_SMG

Priority

Exptime

Done?

HeLMS_0015+0404

3.926310

4.075972

3.930404

4.072622

20.7

19.0

129.4

3.256

2.515

1

60m

10Jan2016

L6-XMM-_0221-0551

35.485752

-5.863565

35.483488

-5.863640

22.4

8.1

-91.9

3.847

2.492

2

30m

11Jan2016

NGP_1333+2357

203.376497

23.952741

203.375100

23.959087

19.7

23.3

-11.4

3.108

2.041

1

60m

10Jan2016

G15_1413+0058

213.452899

0.967259

213.457421

0.973164

19.7

26.8

37.4

2.842

2.172?

1

60m

G15_1435+0110

218.903465

1.165818

218.904950

1.169575

19.6

14.5

21.6

2.949

N/A

1

60m

Finding Charts: The finding charts is in this zip file. Assuming the observer puts the b/g QSO at the slit B position, the long slit is illustrated using the geometry here. Blue square indicates the b/g QSO, orange circle the b/g SMG, green square the offset star. Note the 14-arcsec chip gap. For NGP_1333+2357 and G15_1413+0058, the f/g SMG would fall into the chip gap when the b/g QSO is at slit-B position, so we need to offset along the slit by ~5 to 10 arcsec to put the f/g SMG on the chip. For G15_1413_0058, it may be better to put the SMG on the other side of the chip gap to allow some room for dithering along the slit. In case the b/g QSO is too faint for direct acquisition, a blind offset star is chosen for each target (but there are no bright stars nearby for L6-XMM-_0221-0551 (the priority 2 target), so try to acquire on the QSO itself). They are labeled on the finding charts and are included in the Keck starlist following each target.

submmQSOs (last edited 2017-03-13 00:37:55 by HaiFu)