The opacity of galactic disks at z ∼ 0.7

M. T. Sargent; C. M. Carollo; P. Kampczyk; S. J. Lilly; C. Scarlata; P. Capak; O. Ilbert; A. M. Koekemoer; J. P. Kneib; A. Leauthaud; R. Massey; P. A. Oesch; J. Rhodes; E. Schinnerer; N. Scoville; Y. Taniguchi

doi:10.1088/2041-8205/714/1/L113

The opacity of galactic disks at z ∼ 0.7

M. T. Sargent, C. M. Carollo, P. Kampczyk, S. J. Lilly, C. Scarlata, P. Capak, O. Ilbert, A. M. Koekemoer, J. P. Kneib, A. Leauthaud, R. Massey, P. A. Oesch, J. Rhodes, E. Schinnerer, N. Scoville, Y. Taniguchi

Minnesota Institute for Astrophysics

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9 Scopus citations

Abstract

We compare the surface brightness-inclination relation for a sample of COSMOS pure disk galaxies at z 0.7 with an artificially redshifted sample of Sloan Digital Sky Survey (SDSS) disks well matched to the COSMOS sample in terms of rest-frame photometry and morphology, as well as their selection and analysis. The offset between the average surface brightness of face-on and edge-on disks in the redshifted SDSS sample matches that predicted by measurements of the optical depth of galactic disks in the nearby universe. In contrast, large disks at z 0.7 have a virtually flat surface brightness-inclination relation, suggesting that they are more opaque than their local counterparts. This could be explained by either an increased amount of optically thick material in disks at higher redshift or a different spatial distribution of the dust.

Original language	English (US)
Pages (from-to)	L113-L117
Journal	Astrophysical Journal Letters
Volume	714
Issue number	1 PART 2
DOIs	https://doi.org/10.1088/2041-8205/714/1/L113
State	Published - 2010

Keywords

Cosmology: observations
Dust, extinction
Galaxies: spiral
Surveys

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10.1088/2041-8205/714/1/L113

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Sargent, M. T., Carollo, C. M., Kampczyk, P., Lilly, S. J., Scarlata, C., Capak, P., Ilbert, O., Koekemoer, A. M., Kneib, J. P., Leauthaud, A., Massey, R., Oesch, P. A., Rhodes, J., Schinnerer, E., Scoville, N., & Taniguchi, Y. (2010). The opacity of galactic disks at z ∼ 0.7. Astrophysical Journal Letters, 714(1 PART 2), L113-L117. https://doi.org/10.1088/2041-8205/714/1/L113

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title = "The opacity of galactic disks at z ∼ 0.7",

abstract = "We compare the surface brightness-inclination relation for a sample of COSMOS pure disk galaxies at z 0.7 with an artificially redshifted sample of Sloan Digital Sky Survey (SDSS) disks well matched to the COSMOS sample in terms of rest-frame photometry and morphology, as well as their selection and analysis. The offset between the average surface brightness of face-on and edge-on disks in the redshifted SDSS sample matches that predicted by measurements of the optical depth of galactic disks in the nearby universe. In contrast, large disks at z 0.7 have a virtually flat surface brightness-inclination relation, suggesting that they are more opaque than their local counterparts. This could be explained by either an increased amount of optically thick material in disks at higher redshift or a different spatial distribution of the dust.",

keywords = "Cosmology: observations, Dust, extinction, Galaxies: spiral, Surveys",

author = "Sargent, {M. T.} and Carollo, {C. M.} and P. Kampczyk and Lilly, {S. J.} and C. Scarlata and P. Capak and O. Ilbert and Koekemoer, {A. M.} and Kneib, {J. P.} and A. Leauthaud and R. Massey and Oesch, {P. A.} and J. Rhodes and E. Schinnerer and N. Scoville and Y. Taniguchi",

year = "2010",

doi = "10.1088/2041-8205/714/1/L113",

language = "English (US)",

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TY - JOUR

T1 - The opacity of galactic disks at z ∼ 0.7

AU - Sargent, M. T.

AU - Carollo, C. M.

AU - Kampczyk, P.

AU - Lilly, S. J.

AU - Scarlata, C.

AU - Capak, P.

AU - Ilbert, O.

AU - Koekemoer, A. M.

AU - Kneib, J. P.

AU - Leauthaud, A.

AU - Massey, R.

AU - Oesch, P. A.

AU - Rhodes, J.

AU - Schinnerer, E.

AU - Scoville, N.

AU - Taniguchi, Y.

PY - 2010

Y1 - 2010

N2 - We compare the surface brightness-inclination relation for a sample of COSMOS pure disk galaxies at z 0.7 with an artificially redshifted sample of Sloan Digital Sky Survey (SDSS) disks well matched to the COSMOS sample in terms of rest-frame photometry and morphology, as well as their selection and analysis. The offset between the average surface brightness of face-on and edge-on disks in the redshifted SDSS sample matches that predicted by measurements of the optical depth of galactic disks in the nearby universe. In contrast, large disks at z 0.7 have a virtually flat surface brightness-inclination relation, suggesting that they are more opaque than their local counterparts. This could be explained by either an increased amount of optically thick material in disks at higher redshift or a different spatial distribution of the dust.

AB - We compare the surface brightness-inclination relation for a sample of COSMOS pure disk galaxies at z 0.7 with an artificially redshifted sample of Sloan Digital Sky Survey (SDSS) disks well matched to the COSMOS sample in terms of rest-frame photometry and morphology, as well as their selection and analysis. The offset between the average surface brightness of face-on and edge-on disks in the redshifted SDSS sample matches that predicted by measurements of the optical depth of galactic disks in the nearby universe. In contrast, large disks at z 0.7 have a virtually flat surface brightness-inclination relation, suggesting that they are more opaque than their local counterparts. This could be explained by either an increased amount of optically thick material in disks at higher redshift or a different spatial distribution of the dust.

KW - Cosmology: observations

KW - Dust, extinction

KW - Galaxies: spiral

KW - Surveys

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U2 - 10.1088/2041-8205/714/1/L113

DO - 10.1088/2041-8205/714/1/L113

M3 - Article

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SN - 2041-8205

VL - 714

SP - L113-L117

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1 PART 2

ER -

The opacity of galactic disks at z ∼ 0.7

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