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Cited by 498

The DOI matches its Crossref record; 65 of the 65 references it cites were found in a registry or an index.

Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS

Open access
Balogh, Michael, Eke, Vince, Miller, Chris, Lewis, Ian, Bower, Richard, Couch, Warrick, Nichol, Robert, Bland-Hawthorn, Joss, Baldry, Ivan K., Baugh, Carlton, Bridges, Terry, Cannon, Russell, Cole, Shaun, Colless, Matthew, Collins, Chris, Cross, Nicholas, Dalton, Gavin, Propris, Roberto De, Driver, Simon P., Efstathiou, George, Ellis, Richard S., Frenk, Carlos S., Glazebrook, Karl, Gomez, Percy, Gray, Alex, Hawkins, Edward, Jackson, Carole, Lahav, Ofer, Lumsden, Stuart, Maddox, Steve, Madgwick, Darren, Norberg, Peder, Peacock, John A., Percival, Will, Peterson, Bruce A., Sutherland, Will, Taylor, Keith·2004·Monthly Notices of the Royal Astronomical Society
DOI 10.1111/j.1365-2966.2004.07453.x
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Abstract

We analyse the observed correlation between galaxy environment and Hα emission-line strength, using volume-limited samples and group catalogues of 24 968 galaxies at 0.05 < z < 0.095, drawn from the 2dF Galaxy Redshift Survey ( < −19.5) and the Sloan Digital Sky Survey (Mr < −20.6). We characterize the environment by: (1) Σ5, the surface number density of galaxies determined by the projected distance to the fifth nearest neighbour; and (2) ρ1.1 and ρ5.5, three-dimensional density estimates obtained by convolving the galaxy distribution with Gaussian kernels of dispersion 1.1 and 5.5 Mpc, respectively. We find that star-forming and quiescent galaxies form two distinct populations, as characterized by their Hα equivalent width, W0(Hα). The relative numbers of star-forming and quiescent galaxies vary strongly and continuously with local density. However, the distribution of W0(Hα) amongst the star-forming population is independent of environment. The fraction of star-forming galaxies shows strong sensitivity to the density on large scales, ρ5.5, which is likely independent of the trend with local density, ρ1.1. We use two differently selected group catalogues to demonstrate that the correlation with galaxy density is approximately independent of group velocity dispersion, for σ= 200–1000 km s-1. Even in the lowest-density environments, no more than ∼70 per cent of galaxies show significant Hα emission. Based on these results, we conclude that the present-day correlation between star formation rate and environment is a result of short-time-scale mechanisms that take place preferentially at high redshift, such as starbursts induced by galaxy–galaxy interactions.

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Metadata

Authors
Balogh, M., Eke, V., Miller, C., Lewis, I., Bower, R., Couch, W., Nichol, R., Bland-Hawthorn, J., Baldry, I. K., Baugh, C., Bridges, T., Cannon, R., Cole, S., Colless, M., Collins, C., Cross, N., Dalton, G., Propris, R. D., Driver, S. P., Efstathiou, G., Ellis, R. S., Frenk, C. S., Glazebrook, K., Gomez, P., Gray, A., Hawkins, E., Jackson, C., Lahav, O., Lumsden, S., Maddox, S., Madgwick, D., Norberg, P., Peacock, J. A., Percival, W., Peterson, B. A., Sutherland, W., & Taylor, K.
Venue
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press (OUP)
Published
2004-03
Volume
348
Issue
4
Pages
1355-1372
ISSN
  • 0035-8711 (ISSN-L)
  • 1365-2966
DOI
10.1111/j.1365-2966.2004.07453.x
OpenAlex
W2085360766
Cited by
498
References
65
FWCI
26.98
Type
journal article
Language
en
Open access
bronze

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The paper
Balogh, M., Eke, V., Miller, C., Lewis, I., Bower, R., Couch, W., Nichol, R., Bland-Hawthorn, J., Baldry, I. K., Baugh, C., Bridges, T., Cannon, R., Cole, S., Colless, M., Collins, C., Cross, N., Dalton, G., Propris, R. D., Driver, S. P., . . . Taylor, K. (2004). Galaxy ecology: groups and low-density environments in the SDSS and 2dFGRS. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1111/j.1365-2966.2004.07453.x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.