Outputs (120)

KINETyS: Constraining spatial variations of the stellar initial mass function in early-type galaxies (2017)
Journal Article
Alton, P. D., Smith, R. J., & Lucey, J. R. (2017). KINETyS: Constraining spatial variations of the stellar initial mass function in early-type galaxies. Monthly Notices of the Royal Astronomical Society, 468(2), 1594-1615. https://doi.org/10.1093/mnras/stx464

The heavyweight stellar initial mass function (IMF) observed in the cores of massive early-type galaxies (ETGs) has been linked to formation of their cores in an initial swiftly quenched rapid starburst. However, the outskirts of ETGs are thought to... Read More about KINETyS: Constraining spatial variations of the stellar initial mass function in early-type galaxies.

A counter-image to the gravitational arc in Abell 1201: Evidence for IMF variations, or a 10^10 M⊙ black hole? (2017)
Journal Article
Smith, R. J., Lucey, J. R., & Edge, A. C. (2017). A counter-image to the gravitational arc in Abell 1201: Evidence for IMF variations, or a 10^10 M⊙ black hole?. Monthly Notices of the Royal Astronomical Society, 467(1), 836-848. https://doi.org/10.1093/mnras/stx059

Abell 1201 is a massive galaxy cluster at z=0.169 with a brightest cluster galaxy (BCG) that acts as a gravitational lens to a background source at z=0.451. The lensing configuration is unusual, with a single bright arc formed at small radius (∼2 arc... Read More about A counter-image to the gravitational arc in Abell 1201: Evidence for IMF variations, or a 10^10 M⊙ black hole?.

The 6dF Galaxy Survey: Bulk Flows on 50−70h−1 Mpc scales (2015)
Journal Article
Scrimgeour, M. I., Davis, T. M., Blake, C., Staveley-Smith, L., Magoulas, C., Springob, C. M., …Poole, G. B. (2016). The 6dF Galaxy Survey: Bulk Flows on 50−70h−1 Mpc scales. Monthly Notices of the Royal Astronomical Society, 455(1), 386-401. https://doi.org/10.1093/mnras/stv2146

We measure the bulk flow of the local Universe using the 6dF Galaxy Survey peculiar velocity sample (6dFGSv), the largest and most homogeneous peculiar velocity sample to date. 6dFGSv is a Fundamental Plane sample of ∼104 peculiar velocities covering... Read More about The 6dF Galaxy Survey: Bulk Flows on 50−70h−1 Mpc scales.

The IMF-sensitive 1.14-μm Na i doublet in early-type galaxies (2015)
Journal Article
Smith, R. J., Alton, P. D., Lucey, J. R., Conroy, C., & Carter, D. (2015). The IMF-sensitive 1.14-μm Na i doublet in early-type galaxies. Monthly Notices of the Royal Astronomical Society: Letters, 454(1), L71-L75. https://doi.org/10.1093/mnrasl/slv132

We present J-band spectroscopy of passive galaxies focusing on the Na i doublet at 1.14 μm. Like the Na i 0.82 μm doublet, this feature is strong in low-mass stars and hence may provide a useful probe of the initial mass function (IMF). From high sig... Read More about The IMF-sensitive 1.14-μm Na i doublet in early-type galaxies.

Beyond Sérsic + exponential disc morphologies in the Coma Cluster (2015)
Journal Article
Head, J. T., Lucey, J. R., & Hudson, M. J. (2015). Beyond Sérsic + exponential disc morphologies in the Coma Cluster. Monthly Notices of the Royal Astronomical Society, 453(4), 3730-3753. https://doi.org/10.1093/mnras/stv1662

Galaxies are not limited to simple spheroid or bulge + disc morphologies. We explore the diversity of internal galaxy structures in the Coma Cluster across a wide range of luminosities (−17 > Mg > −22) and cluster-centric radii (0 < rcluster < 1.3r20... Read More about Beyond Sérsic + exponential disc morphologies in the Coma Cluster.

Modified gravity and large scale flows (2015)
Journal Article
Mould, J., Colless, M., Erdoğdu, P., Jones, H., Lucey, J., Ma, Y., …Springob, C. M. (2015). Modified gravity and large scale flows. Astrophysics and Space Science, 357(2), Article 162. https://doi.org/10.1007/s10509-015-2351-2

Reconstruction of the local velocity field from the overdensity field and a gravitational acceleration that falls off from a point mass as r −2 yields velocities in broad agreement with peculiar velocities measured with galaxy distance indicators. MO... Read More about Modified gravity and large scale flows.

The SINFONI Nearby Elliptical Lens Locator Survey: discovery of two new low-redshift strong lenses and implications for the initial mass function in giant early-type galaxies (2015)
Journal Article
Smith, R., Lucey, J., & Conroy, C. (2015). The SINFONI Nearby Elliptical Lens Locator Survey: discovery of two new low-redshift strong lenses and implications for the initial mass function in giant early-type galaxies. Monthly Notices of the Royal Astronomical Society, 449(4), 3441-3457. https://doi.org/10.1093/mnras/stv518

We present results from a blind survey to identify strong gravitational lenses among the population of low-redshift early-type galaxies. The SINFONI Nearby Elliptical Lens Locator Survey (SNELLS) uses integral-field infrared spectroscopy to search fo... Read More about The SINFONI Nearby Elliptical Lens Locator Survey: discovery of two new low-redshift strong lenses and implications for the initial mass function in giant early-type galaxies.

The 6dF Galaxy Survey: peculiar velocity field and cosmography (2014)
Journal Article
Springob, C. M., Magoulas, C., Colless, M., Mould, J., Erdoğdu, P., Jones, D. H., …Fluke, C. J. (2014). The 6dF Galaxy Survey: peculiar velocity field and cosmography. Monthly Notices of the Royal Astronomical Society, 445(3), 2677-2697. https://doi.org/10.1093/mnras/stu1743

We derive peculiar velocities for the 6dF Galaxy Survey (6dFGS) and describe the velocity field of the nearby (z < 0.055) Southern hemisphere. The survey comprises 8885 galaxies for which we have previously reported Fundamental Plane data. We obtain... Read More about The 6dF Galaxy Survey: peculiar velocity field and cosmography.

The HST/ACS Coma Cluster Survey – X. Nuclear star clusters in low-mass early-type galaxies: scaling relations (2014)
Journal Article
den Brok, M., Peletier, R. F., Seth, A., Balcells, M., Dominguez, L., Graham, A. W., …Weinzirl, T. (2014). The HST/ACS Coma Cluster Survey – X. Nuclear star clusters in low-mass early-type galaxies: scaling relations. Monthly Notices of the Royal Astronomical Society, 445(3), 2385-2403. https://doi.org/10.1093/mnras/stu1906

We present scaling relations between structural properties of nuclear star clusters and their host galaxies for a sample of early-type dwarf galaxies observed as part of the Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) Coma Cluster... Read More about The HST/ACS Coma Cluster Survey – X. Nuclear star clusters in low-mass early-type galaxies: scaling relations.

The 6dF galaxy survey: cosmological constraints from the velocity power spectrum (2014)
Journal Article
Johnson, A., Blake, C., Koda, J., Ma, Y., Colless, M., Crocce, M., …Springob, C. (2014). The 6dF galaxy survey: cosmological constraints from the velocity power spectrum. Monthly Notices of the Royal Astronomical Society, 444(4), 3926-3947. https://doi.org/10.1093/mnras/stu1615

We present scale-dependent measurements of the normalized growth rate of structure fσ8(k, z = 0) using only the peculiar motions of galaxies. We use data from the 6-degree Field Galaxy Survey velocity sample together with a newly compiled sample of l... Read More about The 6dF galaxy survey: cosmological constraints from the velocity power spectrum.