What are we doing in Chile?

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# What are we doing in Chile? - PowerPoint PPT Presentation

What are we doing in Chile?. Tomás Verdugo Verónica Motta and the SL2S collaboration . Objects with FORS data in the SL2S . SL2SJ094135-11005 M001,010b SL2SJ221332+004836 M008 SL2SJ085446-012137 M005 x 2

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What are we doing in Chile?

Tomás Verdugo

Verónica Motta

and

the SL2S collaboration

Objects with FORS data in the SL2S

SL2SJ094135-11005 M001,010b

SL2SJ221332+004836 M008

SL2SJ085446-012137 M005 x 2

SL2SJ085914-034514 M002

SL2SJ021408-053532 M012,010a

SL2SJ022151-064725 M016 x 2

SL2SJ021411-040502 M014a

SL2SJ021807-051536 M014b x 2

SL2SJ02215-0647

z=0.618

σ < 372 km s-1

Two systems:

-Tangential

Spectra ?????

B

A

SL2SJ02140-0532

A

zspec = 0.44

σWL = 543 km s-1

Two systems or one system?

zphot = 1.0 Arc A

Coupon et al. 2008

Our measures

zspec (Arcs)= ?

B

C

C

One vs. Two
• Alard (2009)
• Perturbative reconstruction
• One single source
• Different colors are consistent with the model
• Mass don’t follow light !!!
• Limousin et al. (2009)
• θ = 111 degrees, in the same direction as the luminosity contours

BUT ...

OII z = 1.023

Lyαz = 5.2

Some models

Model I

Clump + 3 Galaxies

Arcs A, B and C

σ = 794 km s-1

ε = 0.3

θ = 111°

χ2 = 0.5

Model II

2Clumps + 3 Galaxies

For the second clump:

ε ≈ 0.9 !

θ = 40°

χ2 = 34

Solution?… more DATA

Spectra

56 Reduced Spectra

13 with measured z

Carlberg et al. 2001

Wilman et al. 2005



We need more objects

Stack all groups

On going…
• Models J02140 and J02215

-Proposal to observe J02140

-Spectra for the arcs on J02215

• Dynamics

-We star with J02140

-All the Groups

- Morphology, σ, internal velocity dispersion

- Luminosity of the members

-Members in the field

• Ideas are Welcome
Some models

Model I

Clump + 3 Galaxies

Arcs A and B

σ = 794 km s-1

ε = 0.3

θ = 111°

χ2 = 0.5

Model II

Clump + 3 Galaxies

Arcs A,B and C

σ = 798 km s-1

ε = 0.1

θ = 107°

χ2 > 200

Solution?… more DATA