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Kinematic and chemical evolution of early-type galaxies

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Kinematic and chemical evolution of early-type galaxies. / Ziegler, B .L.; Thomas, D.; Bohm, A.; Bender, R.; Fritz, A.; Maraston, C.

In: Astronomy and Astrophysics, Vol. 433, No. 2, 04.2005, p. 519-530.

Research output: Contribution to journalArticlepeer-review

Harvard

Ziegler, BL, Thomas, D, Bohm, A, Bender, R, Fritz, A & Maraston, C 2005, 'Kinematic and chemical evolution of early-type galaxies', Astronomy and Astrophysics, vol. 433, no. 2, pp. 519-530. https://doi.org/10.1051/0004-6361:20042471

APA

Ziegler, B. . L., Thomas, D., Bohm, A., Bender, R., Fritz, A., & Maraston, C. (2005). Kinematic and chemical evolution of early-type galaxies. Astronomy and Astrophysics, 433(2), 519-530. https://doi.org/10.1051/0004-6361:20042471

Vancouver

Ziegler BL, Thomas D, Bohm A, Bender R, Fritz A, Maraston C. Kinematic and chemical evolution of early-type galaxies. Astronomy and Astrophysics. 2005 Apr;433(2):519-530. https://doi.org/10.1051/0004-6361:20042471

Author

Ziegler, B .L. ; Thomas, D. ; Bohm, A. ; Bender, R. ; Fritz, A. ; Maraston, C. / Kinematic and chemical evolution of early-type galaxies. In: Astronomy and Astrophysics. 2005 ; Vol. 433, No. 2. pp. 519-530.

Bibtex

@article{fe748ee402214f15896435b4e45bbd11,
title = "Kinematic and chemical evolution of early-type galaxies",
abstract = "We investigate in detail 13 early-type field galaxies with 0.2<z<0.7 drawn from the FORS Deep Field. Since the majority (9 galaxies) is at z ≈ 0.4, we compare the field galaxies to 22 members of three rich clusters with z=0.37 to explore possible variations caused by environmental effects. We exploit VLT/FORS spectra ( R≈1200) and HST/ACS imaging to determine internal kinematics, structures and stellar population parameters. From the Faber-Jackson and Fundamental Plane scaling relations we deduce a modest luminosity evolution in the B-band of 0.3-0.5 mag for both samples. We compare measured Lick absorption line strengths (H$\delta$, H$\gamma$, H$\beta$, Mgb, and Fe 5335) with evolutionary stellar population models to derive light-averaged ages, metallicities and the element abundance ratios Mg/Fe. We find that these three stellar parameters of the distant galaxies obey a scaling with velocity dispersion (mass) which is consistent with that of local nearby galaxies. In particular, the distribution of Mg/Fe ratios of local galaxies is matched by the distant ones, and their derived mean offset in age corresponds to the average lookback time. This indicates that there was little chemical enrichment and no significant star formation within the last ~5 Gyr. The calculated luminosity evolution of a simple stellar population model for the derived galaxy ages and lookback times is in most cases consistent with the mild brightening measured by the scaling relations.",
keywords = "galaxies : elliptical and lenticular, cD, galaxies : evolution, galaxies : abundances, galaxies : stellar content, galaxies : kinematics and dynamics, galaxies : distances and redshifts",
author = "Ziegler, {B .L.} and D. Thomas and A. Bohm and R. Bender and A. Fritz and C. Maraston",
year = "2005",
month = apr,
doi = "10.1051/0004-6361:20042471",
language = "English",
volume = "433",
pages = "519--530",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "2",

}

RIS

TY - JOUR

T1 - Kinematic and chemical evolution of early-type galaxies

AU - Ziegler, B .L.

AU - Thomas, D.

AU - Bohm, A.

AU - Bender, R.

AU - Fritz, A.

AU - Maraston, C.

PY - 2005/4

Y1 - 2005/4

N2 - We investigate in detail 13 early-type field galaxies with 0.2<z<0.7 drawn from the FORS Deep Field. Since the majority (9 galaxies) is at z ≈ 0.4, we compare the field galaxies to 22 members of three rich clusters with z=0.37 to explore possible variations caused by environmental effects. We exploit VLT/FORS spectra ( R≈1200) and HST/ACS imaging to determine internal kinematics, structures and stellar population parameters. From the Faber-Jackson and Fundamental Plane scaling relations we deduce a modest luminosity evolution in the B-band of 0.3-0.5 mag for both samples. We compare measured Lick absorption line strengths (H$\delta$, H$\gamma$, H$\beta$, Mgb, and Fe 5335) with evolutionary stellar population models to derive light-averaged ages, metallicities and the element abundance ratios Mg/Fe. We find that these three stellar parameters of the distant galaxies obey a scaling with velocity dispersion (mass) which is consistent with that of local nearby galaxies. In particular, the distribution of Mg/Fe ratios of local galaxies is matched by the distant ones, and their derived mean offset in age corresponds to the average lookback time. This indicates that there was little chemical enrichment and no significant star formation within the last ~5 Gyr. The calculated luminosity evolution of a simple stellar population model for the derived galaxy ages and lookback times is in most cases consistent with the mild brightening measured by the scaling relations.

AB - We investigate in detail 13 early-type field galaxies with 0.2<z<0.7 drawn from the FORS Deep Field. Since the majority (9 galaxies) is at z ≈ 0.4, we compare the field galaxies to 22 members of three rich clusters with z=0.37 to explore possible variations caused by environmental effects. We exploit VLT/FORS spectra ( R≈1200) and HST/ACS imaging to determine internal kinematics, structures and stellar population parameters. From the Faber-Jackson and Fundamental Plane scaling relations we deduce a modest luminosity evolution in the B-band of 0.3-0.5 mag for both samples. We compare measured Lick absorption line strengths (H$\delta$, H$\gamma$, H$\beta$, Mgb, and Fe 5335) with evolutionary stellar population models to derive light-averaged ages, metallicities and the element abundance ratios Mg/Fe. We find that these three stellar parameters of the distant galaxies obey a scaling with velocity dispersion (mass) which is consistent with that of local nearby galaxies. In particular, the distribution of Mg/Fe ratios of local galaxies is matched by the distant ones, and their derived mean offset in age corresponds to the average lookback time. This indicates that there was little chemical enrichment and no significant star formation within the last ~5 Gyr. The calculated luminosity evolution of a simple stellar population model for the derived galaxy ages and lookback times is in most cases consistent with the mild brightening measured by the scaling relations.

KW - galaxies : elliptical and lenticular, cD

KW - galaxies : evolution

KW - galaxies : abundances

KW - galaxies : stellar content

KW - galaxies : kinematics and dynamics

KW - galaxies : distances and redshifts

U2 - 10.1051/0004-6361:20042471

DO - 10.1051/0004-6361:20042471

M3 - Article

VL - 433

SP - 519

EP - 530

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 2

ER -

ID: 1795401