%0 Generic %1 lofthouse2017distribution %A Lofthouse, E. K. %A Kaviraj, S. %A Smith, D. J. B. %A Hardcastle, M. J. %D 2017 %K SFR environment inventory morphology %T The distribution of local star formation activity as a function of galaxy stellar mass, environment and morphology %U http://arxiv.org/abs/1709.01519 %X We present a detailed inventory of star formation in the local Universe, dissecting the cosmic star formation budget as a function of key variables that influence the star formation rate (SFR) of galaxies: stellar mass, local environment and morphology. We use a large homogeneous dataset from the SDSS to first study how the star-formation budget in galaxies with stellar masses greater than $(M_*/M_ødot) = 10$ splits as a function of each parameter separately. We then explore how the budget behaves as a simultaneous function of these three parameters. We show that the bulk of the star formation at $z<0.075$ ($\sim$65 per cent) takes place in spiral galaxies, that reside in the field, and have stellar masses between $10 < łog (M_*/M_ødot) < 10.9$. The ratio of the cosmic star formation budget hosted by galaxies in the field, groups and clusters is 21:3:1. Morphological ellipticals are minority contributors to local star formation. They make a measurable contribution to the star formation budget only at intermediate to high stellar masses, $10.3< łog (M_*/M_ødot) < 11.2 $ (where they begin to dominate by number), and typically in the field, where they contribute up to $\sim$13 per cent of the total star-formation budget. This inventory of local star formation serves as a $z\sim0$ baseline which, when combined with similar work at high redshift, will enable us to understand the changes in SFR that have occurred over cosmic time and offers a strong constraint on models of galaxy formation.

@misc{lofthouse2017distribution, abstract = {We present a detailed inventory of star formation in the local Universe, dissecting the cosmic star formation budget as a function of key variables that influence the star formation rate (SFR) of galaxies: stellar mass, local environment and morphology. We use a large homogeneous dataset from the SDSS to first study how the star-formation budget in galaxies with stellar masses greater than $\log (\textrm{M}_{*}/\textrm{M}_{\odot}) = 10$ splits as a function of each parameter separately. We then explore how the budget behaves as a simultaneous function of these three parameters. We show that the bulk of the star formation at $z<0.075$ ($\sim$65 per cent) takes place in spiral galaxies, that reside in the field, and have stellar masses between $10 < \log (\textrm{M}_{*}/\textrm{M}_{\odot}) < 10.9$. The ratio of the cosmic star formation budget hosted by galaxies in the field, groups and clusters is 21:3:1. Morphological ellipticals are minority contributors to local star formation. They make a measurable contribution to the star formation budget only at intermediate to high stellar masses, $10.3< \log (\textrm{M}_{*}/\textrm{M}_{\odot}) < 11.2 $ (where they begin to dominate by number), and typically in the field, where they contribute up to $\sim$13 per cent of the total star-formation budget. This inventory of local star formation serves as a $z\sim0$ baseline which, when combined with similar work at high redshift, will enable us to understand the changes in SFR that have occurred over cosmic time and offers a strong constraint on models of galaxy formation.}, added-at = {2017-09-07T22:18:14.000+0200}, author = {Lofthouse, E. K. and Kaviraj, S. and Smith, D. J. B. and Hardcastle, M. J.}, biburl = {https://www.bibsonomy.org/bibtex/2493c83597e945e0f37df6e6856d98eec/miki}, description = {[1709.01519] The distribution of local star formation activity as a function of galaxy stellar mass, environment and morphology}, interhash = {a845eba5ebdf6ad655b0d3688892600f}, intrahash = {493c83597e945e0f37df6e6856d98eec}, keywords = {SFR environment inventory morphology}, note = {cite arxiv:1709.01519Comment: 9 pages, 4 figures, MNRAS in press}, timestamp = {2017-09-07T22:18:14.000+0200}, title = {The distribution of local star formation activity as a function of galaxy stellar mass, environment and morphology}, url = {http://arxiv.org/abs/1709.01519}, year = 2017 }