Morphology-dependent trends of galaxy age with environment in A 901/2 seen with COMBO-17

C. Wolf; M. E. Gray; A. Aragón-Salamanca; K. P. Lane; K. Meisenheimer

doi:10.1111/j.1745-3933.2006.00272.x

Morphology-dependent trends of galaxy age with environment in A 901/2 seen with COMBO-17

C. Wolf^*
, M. E. Gray
, A. Aragón-Salamanca
, K. P. Lane
, K. Meisenheimer

^*Corresponding author for this work

Research output: Contribution to journal › Letter › peer-review

18 Citations (Scopus)

Abstract

We investigate correlations between galaxy age and environment in the A 901/2 supercluster for separate morphologies. Using COMBO-17 data, we define a sample of 530 galaxies, complete at M_V - 5 log h < -18 on an area of 3.5 × 3.5 (Mpc h^-1)². We explore several age indicators including an extinction-corrected residual from the colour-magnitude relation. As a result, we find a clear trend of age with density for galaxies of all morphologies that include a spheroidal component, in the sense that galaxies in denser environments are older. This trend is not seen among Scd/Irr galaxies since they all have young ages. However, the trend among the other types is stronger for fainter galaxies. While we also see an expected age-morphology relation, we find no evidence for a morphology-density relation at fixed age.

Original language	English
Pages (from-to)	L1-L5
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	376
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-3933.2006.00272.x
Publication status	Published - 1 Mar 2007
Externally published	Yes

Access to Document

10.1111/j.1745-3933.2006.00272.x

Cite this

@article{2644dfac176e4a38b4b5d45ffd3972cc,

title = "Morphology-dependent trends of galaxy age with environment in A 901/2 seen with COMBO-17",

abstract = "We investigate correlations between galaxy age and environment in the A 901/2 supercluster for separate morphologies. Using COMBO-17 data, we define a sample of 530 galaxies, complete at MV - 5 log h < -18 on an area of 3.5 × 3.5 (Mpc h-1)2. We explore several age indicators including an extinction-corrected residual from the colour-magnitude relation. As a result, we find a clear trend of age with density for galaxies of all morphologies that include a spheroidal component, in the sense that galaxies in denser environments are older. This trend is not seen among Scd/Irr galaxies since they all have young ages. However, the trend among the other types is stronger for fainter galaxies. While we also see an expected age-morphology relation, we find no evidence for a morphology-density relation at fixed age.",

keywords = "Galaxies: clusters: general, Galaxies: evolution",

author = "C. Wolf and Gray, \{M. E.\} and A. Arag{\'o}n-Salamanca and Lane, \{K. P.\} and K. Meisenheimer",

note = "{\textcopyright} 2007 The Authors",

year = "2007",

month = mar,

day = "1",

doi = "10.1111/j.1745-3933.2006.00272.x",

language = "English",

volume = "376",

pages = "L1--L5",

journal = "Monthly Notices of the Royal Astronomical Society: Letters",

issn = "1745-3925",

publisher = "Oxford University Press ",

number = "1",

}

TY - JOUR

T1 - Morphology-dependent trends of galaxy age with environment in A 901/2 seen with COMBO-17

AU - Wolf, C.

AU - Gray, M. E.

AU - Aragón-Salamanca, A.

AU - Lane, K. P.

AU - Meisenheimer, K.

PY - 2007/3/1

Y1 - 2007/3/1

N2 - We investigate correlations between galaxy age and environment in the A 901/2 supercluster for separate morphologies. Using COMBO-17 data, we define a sample of 530 galaxies, complete at MV - 5 log h < -18 on an area of 3.5 × 3.5 (Mpc h-1)2. We explore several age indicators including an extinction-corrected residual from the colour-magnitude relation. As a result, we find a clear trend of age with density for galaxies of all morphologies that include a spheroidal component, in the sense that galaxies in denser environments are older. This trend is not seen among Scd/Irr galaxies since they all have young ages. However, the trend among the other types is stronger for fainter galaxies. While we also see an expected age-morphology relation, we find no evidence for a morphology-density relation at fixed age.

AB - We investigate correlations between galaxy age and environment in the A 901/2 supercluster for separate morphologies. Using COMBO-17 data, we define a sample of 530 galaxies, complete at MV - 5 log h < -18 on an area of 3.5 × 3.5 (Mpc h-1)2. We explore several age indicators including an extinction-corrected residual from the colour-magnitude relation. As a result, we find a clear trend of age with density for galaxies of all morphologies that include a spheroidal component, in the sense that galaxies in denser environments are older. This trend is not seen among Scd/Irr galaxies since they all have young ages. However, the trend among the other types is stronger for fainter galaxies. While we also see an expected age-morphology relation, we find no evidence for a morphology-density relation at fixed age.

KW - Galaxies: clusters: general

KW - Galaxies: evolution

UR - https://www.scopus.com/pages/publications/52049090709

U2 - 10.1111/j.1745-3933.2006.00272.x

DO - 10.1111/j.1745-3933.2006.00272.x

M3 - Letter

SN - 1745-3925

VL - 376

SP - L1-L5

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

Morphology-dependent trends of galaxy age with environment in A 901/2 seen with COMBO-17

Abstract

Access to Document

Other files and links

Fingerprint

Cite this