Outputs (142)

The VST ATLAS quasar survey I: Catalogue of photometrically selected quasar candidates (2023)
Journal Article
Eltvedt, A. M., Shanks, T., Metcalfe, N., Ansarinejad, B., Barrientos, L., Sharp, R., …Zhou, Z. (2023). The VST ATLAS quasar survey I: Catalogue of photometrically selected quasar candidates. Monthly Notices of the Royal Astronomical Society, 521(3), 3384-3404. https://doi.org/10.1093/mnras/stad516

We present the VST ATLAS Quasar Survey, consisting of ∼1229 000 quasar (QSO) candidates with 16 < g < 22.5 over ∼4700 deg2. The catalogue is based on VST ATLAS+NEOWISE imaging surveys and aims to reach a QSO sky density of 130 deg−2 for z < 2.2 and ∼... Read More about The VST ATLAS quasar survey I: Catalogue of photometrically selected quasar candidates.

VST ATLAS galaxy cluster catalogue I: cluster detection and mass calibration (2023)
Journal Article
Ansarinejad, B., Murphy, D., Shanks, T., & Metcalfe, N. (2023). VST ATLAS galaxy cluster catalogue I: cluster detection and mass calibration. Monthly Notices of the Royal Astronomical Society, 520(1), 1371-1389. https://doi.org/10.1093/mnras/stac3815

Taking advantage of ∼4700 deg2 optical coverage of the Southern sky offered by the VST ATLAS survey, we construct a new catalogue of photometrically selected galaxy groups and clusters using the ORCA cluster detection algorithm. The catalogue contain... Read More about VST ATLAS galaxy cluster catalogue I: cluster detection and mass calibration.

The local hole: a galaxy underdensity covering 90 per cent of sky to ≈200 Mpc (2022)
Journal Article
Wong, J. H., Shanks, T., Metcalfe, N., & Whitbourn, J. (2022). The local hole: a galaxy underdensity covering 90 per cent of sky to ≈200 Mpc. Monthly Notices of the Royal Astronomical Society, 511(4), 5742-5755. https://doi.org/10.1093/mnras/stac396

We investigate the ‘Local Hole’, an anomalous underdensity in the local galaxy environment, by extending our previous galaxy K-band number-redshift and number-magnitude counts to ≈90 per cent of the sky. Our redshift samples are taken from the 2MASS... Read More about The local hole: a galaxy underdensity covering 90 per cent of sky to ≈200 Mpc.

The nature of sub-millimetre galaxies II: an ALMA comparison of SMG dust heating mechanisms (2022)
Journal Article
Ansarinejad, B., Shanks, T., Bielby, R., Metcalfe, N., Infante, L., Murphy, D., …Stach, S. (2022). The nature of sub-millimetre galaxies II: an ALMA comparison of SMG dust heating mechanisms. Monthly Notices of the Royal Astronomical Society, 510(4), 4976-4991. https://doi.org/10.1093/mnras/stac002

We compare the contribution of active galactic nuclei (AGNs) and star formation towards dust heating in sub-mm galaxies (SMGs). We have used ALMA at 0.1-arcsec resolution to image a complete flux-limited sample of seven sub-mm sources previously show... Read More about The nature of sub-millimetre galaxies II: an ALMA comparison of SMG dust heating mechanisms.

The nature of sub-millimetre galaxies I: a comparison of AGN and star-forming galaxy SED fits (2021)
Journal Article
Shanks, T., Ansarinejad, B., Bielby, R., Heywood, I., Metcalfe, N., & Wang, L. (2021). The nature of sub-millimetre galaxies I: a comparison of AGN and star-forming galaxy SED fits. Monthly Notices of the Royal Astronomical Society, 505(1), 1509-1529. https://doi.org/10.1093/mnras/stab1226

High-redshift sub-millimetre galaxies (SMGs) are usually assumed to be powered by star formation. However, it has been clear for some time that >20 per cent of such sourcesbrighter than ≈3 mJy host quasars. Here, we analyse a complete sample of 12 su... Read More about The nature of sub-millimetre galaxies I: a comparison of AGN and star-forming galaxy SED fits.

SuperRAENN: A Semisupervised Supernova Photometric Classification Pipeline Trained on Pan-STARRS1 Medium-Deep Survey Supernovae (2020)
Journal Article
Villar, V. A., Hosseinzadeh, G., Berger, E., Ntampaka, M., Jones, D. O., Challis, P., …Waters, C. (2020). SuperRAENN: A Semisupervised Supernova Photometric Classification Pipeline Trained on Pan-STARRS1 Medium-Deep Survey Supernovae. Astrophysical Journal, 905(2), Article 94. https://doi.org/10.3847/1538-4357/abc6fd

Automated classification of supernovae (SNe) based on optical photometric light-curve information is essential in the upcoming era of wide-field time domain surveys, such as the Legacy Survey of Space and Time (LSST) conducted by the Rubin Observator... Read More about SuperRAENN: A Semisupervised Supernova Photometric Classification Pipeline Trained on Pan-STARRS1 Medium-Deep Survey Supernovae.

Photometric Classification of 2315 Pan-STARRS1 Supernovae with Superphot (2020)
Journal Article
Hosseinzadeh, G., Dauphin, F., Villar, V. A., Berger, E., Jones, D. O., Challis, P., …Waters, C. (2020). Photometric Classification of 2315 Pan-STARRS1 Supernovae with Superphot. Astrophysical Journal, 905(2), Article 93. https://doi.org/10.3847/1538-4357/abc42b

The classification of supernovae (SNe) and its impact on our understanding of explosion physics and progenitors have traditionally been based on the presence or absence of certain spectral features. However, current and upcoming wide-field time-domai... Read More about Photometric Classification of 2315 Pan-STARRS1 Supernovae with Superphot.

Pan-STARRS Photometric and Astrometric Calibration (2020)
Journal Article
Magnier, E. A., Schlafly, E. F., Finkbeiner, D. P., Tonry, J., Goldman, B., Röser, S., …Wainscoat, R. (2020). Pan-STARRS Photometric and Astrometric Calibration. Astrophysical Journal Supplement, 251(1), Article 6. https://doi.org/10.3847/1538-4365/abb82a

We present the details of the photometric and astrometric calibration of the Pan-STARRS1 3π Survey. The photometric goals were to reduce the systematic effects introduced by the camera and detectors, and to place all of the observations onto a photom... Read More about Pan-STARRS Photometric and Astrometric Calibration.

Pan-STARRS Pixel Processing: Detrending, Warping, Stacking (2020)
Journal Article
Waters, C., Magnier, E., Price, P., Chambers, K., Burgett, W., Draper, P., …Wood-Vasey, W. (2020). Pan-STARRS Pixel Processing: Detrending, Warping, Stacking. Astrophysical Journal Supplement, 251(1), Article 4. https://doi.org/10.3847/1538-4365/abb82b

The Pan-STARRS1 (PS1) Science Consortium has carried out a set of imaging surveys using the 1.4 gigapixel GPC1 camera on the PS1 telescope. As this camera is composed of many individual electronic readouts and covers a very large field of view, great... Read More about Pan-STARRS Pixel Processing: Detrending, Warping, Stacking.

Pan-STARRS Pixel Analysis: Source Detection and Characterization (2020)
Journal Article
Magnier, E. A., Sweeney, W., Chambers, K., Flewelling, H., Huber, M., Price, P., …Wainscoat, R. (2020). Pan-STARRS Pixel Analysis: Source Detection and Characterization. Astrophysical Journal Supplement, 251(1), Article 5. https://doi.org/10.3847/1538-4365/abb82c

Over 3 billion astronomical sources have been detected in the more than 22 million orthogonal transfer CCD images obtained as part of the Pan-STARRS1 3π survey. Over 85 billion instances of those sources have been automatically detected and character... Read More about Pan-STARRS Pixel Analysis: Source Detection and Characterization.