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The CGM of a galaxy in a galaxy group at z=1.3

Nicolás Tejos

(PUCV)

On behalf Suraj Poudel et al.

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arctomo workshop�Cerro Calán - Dec 14th, 2023

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G1 in SGASJ1527

E1 (z=1.28)

arc (z=2.76)

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G1 in SGASJ1527

G1 (z=1.28)

arc (z=2.76)

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G1 in SGASJ1527

E2 (z=1.28)

G1 (z=1.28)

arc (z=2.76)

E1 (z=1.28)

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G1 in SGASJ1527

Magnification

HST/F160W

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G1 in SGASJ1527

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G1 in SGASJ1527

Preliminary…

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G1 in SGASJ1527

E1 & E2 dominate the system in terms of mass

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Preliminary…

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G1 in SGASJ1527

E1 & E2 dominate the system in terms of mass

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Preliminary…

We consider the system to be a galaxy group at z=1.28

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G1 in SGASJ1527

E2 (z=1.28)

G1 (z=1.28)

arc (z=2.76)

E1 (z=1.28)

G1 is dv=-100 km/s from E1&E2

[OII] emission

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G1 in SGASJ1527

HST/F160W

MUSE binned 4x4

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G1 in SGASJ1527

HST/F160W

MUSE binned 4x4

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G1 in SGASJ1527

HST/F160W

MUSE binned 4x4

MgII absorption in G1

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G1 in SGASJ1527 - MgII absorption EW

HST/F160W

Comparison with QSOs (from Huang+21)

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G1 in SGASJ1527 - MgII absorption EW

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HST/F160W

Comparison with Lopez+2020

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G1 in SGASJ1527 - MgII absorption EW

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HST/F160W

Comparison with FeII absorption

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G1 in SGASJ1527 - MgII kinematics

HST/F160W

E1 & E2

G1 systemic

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G1 in SGASJ1527 - MgII kinematics

HST/F160W

E1 & E2

G1 systemic

MgII

FeII

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G1 in SGASJ1527 - MgII kinematics

HST/F160W

E1 & E2

G1 systemic

MgII

FeII

May not be robust…

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G1 in SGASJ1527 - MgII kinematics DtB to E1 and E2

HST/F160W

E1 - MgII redshifted

E2 - MgII blueshifted

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G1 in SGASJ1527

E2 (z=1.28)

G1 (z=1.28)

arc (z=2.76)

E1 (z=1.28)

MgII inflow

MgII outflow

G1 is dv=-100 km/s from E1&E2

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G1 in SGASJ1527

E2 (z=1.28)

G1 (z=1.28)

arc (z=2.76)

E1 (z=1.28)

MgII inflow

MgII outflow

G1 is dv=-100 km/s from E1&E2

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E1 is 12 kpc away from E2

G1 is 60 kpc away from E1

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G1 in SGASJ1527

E2 (z=1.28)

G1 (z=1.28)

arc (z=2.76)

E1 (z=1.28)

MgII inflow

MgII outflow

G1 is dv=-100 km/s from E1&E2

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E1 is 12 kpc away from E2

G1 is 60 kpc away from E1

~ 140 kpc radius for reference

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G1 in SGASJ1527

G1 in SGASJ1527

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E2 (z=1.28)

G1 (z=1.28)

arc (z=2.76)

E1 (z=1.28)

MgII inflow

MgII outflow

G1 is dv=-100 km/s from E1&E2

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E1 is 12 kpc away from E2

G1 is 60 kpc away from E1

~ 140 kpc radius for reference

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G1 in SGASJ1527

G1 in SGASJ1527

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Pending points:

  • Confirm all properties of G1, E1 and E2
  • Assess whether the system is a small isolated group or close to the outskirts of a galaxy cluster
  • Other ideas?

E2 (z=1.28)

G1 (z=1.28)

arc (z=2.76)

E1 (z=1.28)

MgII inflow

MgII outflow

G1 is dv=-100 km/s from E1&E2

​

�

E1 is 12 kpc away from E2

G1 is 60 kpc away from E1

~ 140 kpc radius for reference