Constraints on the richness-mass relation and the optical-SZE positional offset distribution for SZE-selected clusters
A. Saro
,
S. Bocquet
,
E. Rozo
,
B. A. Benson
,
J. Mohr
,
E. S. Rykoff
,
M. Soares-Santos
,
L. Bleem
,
S. Dodelson
,
P. Melchior
,
F. Sobreira
,
V. Upadhyay
,
J. Weller
,
T. Abbott
,
F. B. Abdalla
,
S. Allam
,
R. Armstrong
,
M. Banerji
,
A. H. Bauer
,
M. Bayliss
,
A. Benoit-Lévy
,
G. M. Bernstein
,
E. Bertin
(1)
,
M. Brodwin
,
D. Brooks
,
E. Buckley-Geer
,
D. L. Burke
,
J. E. Carlstrom
,
R. Capasso
,
D. Capozzi
,
A. Carnero Rosell
,
M. Carrasco Kind
,
I. Chiu
,
R. Covarrubias
,
T. M. Crawford
,
M. Crocce
,
C. B. d'Andrea
,
L. N. da Costa
,
D. L. Depoy
,
S. Desai
,
T. de Haan
,
H. T. Diehl
,
J. P. Dietrich
,
P. Doel
,
C. E. Cunha
,
T. F. Eifler
,
A. E. Evrard
,
A. Fausti Neto
,
E. Fernandez
,
B. Flaugher
,
P. Fosalba
,
J. Frieman
,
C. Gangkofner
,
E. Gaztanaga
,
D. Gerdes
,
D. Gruen
,
R. A. Gruendl
,
N. Gupta
,
C. Hennig
,
W. L. Holzapfel
,
K. Honscheid
,
B. Jain
,
D. James
,
K. Kuehn
,
N. Kuropatkin
,
O. Lahav
,
T. S. Li
,
H. Lin
,
M. A. G. Maia
,
M. March
,
J. L. Marshall
,
Paul Martini
,
M. Mcdonald
,
C. J. Miller
,
R. Miquel
,
B. Nord
,
R. Ogando
,
A. A. Plazas
,
C. L. Reichardt
,
A. K. Romer
,
A. Roodman
,
M. Sako
,
E. Sanchez
,
M. Schubnell
,
I. Sevilla
,
R. C. Smith
,
B. Stalder
,
A. A. Stark
,
V. Strazzullo
,
E. Suchyta
,
M. E. C. Swanson
,
G. Tarle
,
J. Thaler
,
D. Thomas
,
D. Tucker
,
V. Vikram
,
A. von Der Linden
,
A. R. Walker
,
R. H. Wechsler
,
W. Wester
,
A. Zenteno
,
K. E. Ziegler
A. Saro
- Function : Author
- PersonId : 783219
- ORCID : 0000-0002-9288-862X
S. Bocquet
- Function : Author
E. Rozo
- Function : Author
B. A. Benson
- Function : Author
J. Mohr
- Function : Author
E. S. Rykoff
- Function : Author
M. Soares-Santos
- Function : Author
L. Bleem
- Function : Author
S. Dodelson
- Function : Author
P. Melchior
- Function : Author
F. Sobreira
- Function : Author
V. Upadhyay
- Function : Author
J. Weller
- Function : Author
T. Abbott
- Function : Author
F. B. Abdalla
- Function : Author
S. Allam
- Function : Author
R. Armstrong
- Function : Author
M. Banerji
- Function : Author
A. H. Bauer
- Function : Author
M. Bayliss
- Function : Author
A. Benoit-Lévy
- Function : Author
G. M. Bernstein
- Function : Author
M. Brodwin
- Function : Author
D. Brooks
- Function : Author
E. Buckley-Geer
- Function : Author
D. L. Burke
- Function : Author
J. E. Carlstrom
- Function : Author
R. Capasso
- Function : Author
- PersonId : 760196
- ORCID : 0000-0002-3083-6840
D. Capozzi
- Function : Author
A. Carnero Rosell
- Function : Author
M. Carrasco Kind
- Function : Author
I. Chiu
- Function : Author
R. Covarrubias
- Function : Author
T. M. Crawford
- Function : Author
M. Crocce
- Function : Author
C. B. d'Andrea
- Function : Author
L. N. da Costa
- Function : Author
D. L. Depoy
- Function : Author
S. Desai
- Function : Author
T. de Haan
- Function : Author
H. T. Diehl
- Function : Author
J. P. Dietrich
- Function : Author
P. Doel
- Function : Author
C. E. Cunha
- Function : Author
T. F. Eifler
- Function : Author
A. E. Evrard
- Function : Author
A. Fausti Neto
- Function : Author
E. Fernandez
- Function : Author
B. Flaugher
- Function : Author
P. Fosalba
- Function : Author
- PersonId : 755449
- ORCID : 0000-0002-1510-5214
J. Frieman
- Function : Author
C. Gangkofner
- Function : Author
E. Gaztanaga
- Function : Author
D. Gerdes
- Function : Author
D. Gruen
- Function : Author
R. A. Gruendl
- Function : Author
N. Gupta
- Function : Author
- PersonId : 756430
- ORCID : 0000-0001-7547-4241
C. Hennig
- Function : Author
W. L. Holzapfel
- Function : Author
K. Honscheid
- Function : Author
B. Jain
- Function : Author
D. James
- Function : Author
K. Kuehn
- Function : Author
N. Kuropatkin
- Function : Author
O. Lahav
- Function : Author
T. S. Li
- Function : Author
H. Lin
- Function : Author
M. A. G. Maia
- Function : Author
M. March
- Function : Author
J. L. Marshall
- Function : Author
Paul Martini
- Function : Author
M. Mcdonald
- Function : Author
- PersonId : 755503
- ORCID : 0000-0001-5226-8349
C. J. Miller
- Function : Author
R. Miquel
- Function : Author
B. Nord
- Function : Author
R. Ogando
- Function : Author
A. A. Plazas
- Function : Author
C. L. Reichardt
- Function : Author
A. K. Romer
- Function : Author
A. Roodman
- Function : Author
M. Sako
- Function : Author
E. Sanchez
- Function : Author
M. Schubnell
- Function : Author
I. Sevilla
- Function : Author
R. C. Smith
- Function : Author
B. Stalder
- Function : Author
A. A. Stark
- Function : Author
V. Strazzullo
- Function : Author
E. Suchyta
- Function : Author
M. E. C. Swanson
- Function : Author
G. Tarle
- Function : Author
J. Thaler
- Function : Author
D. Thomas
- Function : Author
D. Tucker
- Function : Author
V. Vikram
- Function : Author
A. von Der Linden
- Function : Author
A. R. Walker
- Function : Author
R. H. Wechsler
- Function : Author
W. Wester
- Function : Author
A. Zenteno
- Function : Author
K. E. Ziegler
- Function : Author
Abstract
We cross-match galaxy cluster candidates selected via their Sunyaev-Zel'dovich effect (SZE) signatures in 129.1 deg2 of the South Pole Telescope 2500d SPT-SZ survey with optically identified clusters selected from the Dark Energy Survey science verification data. We identify 25 clusters between 0.1 ≲ z ≲ 0.8 in the union of the SPT-SZ and redMaPPer (RM) samples. RM is an optical cluster finding algorithm that also returns a richness estimate for each cluster. We model the richness λ-mass relation with the following function 500> ∝ Bλln M500 + Cλln E(z) and use SPT-SZ cluster masses and RM richnesses λ to constrain the parameters. We find B_λ = 1.14^{+0.21}_{-0.18} and C_λ =0.73^{+0.77}_{-0.75}. The associated scatter in mass at fixed richness is σ _{ln M|λ } = 0.18^{+0.08}_{-0.05} at a characteristic richness λ = 70. We demonstrate that our model provides an adequate description of the matched sample, showing that the fraction of SPT-SZ-selected clusters with RM counterparts is consistent with expectations and that the fraction of RM-selected clusters with SPT-SZ counterparts is in mild tension with expectation. We model the optical-SZE cluster positional offset distribution with the sum of two Gaussians, showing that it is consistent with a dominant, centrally peaked population and a subdominant population characterized by larger offsets. We also cross-match the RM catalogue with SPT-SZ candidates below the official catalogue threshold significance ξ = 4.5, using the RM catalogue to provide optical confirmation and redshifts for 15 additional clusters with ξ ∈ [4, 4.5].
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