Outputs (142)

Physical Properties of 15 Quasars at z ≳ 6.5 (2017)
Journal Article
Mazzucchelli, C., Bañados, E., Venemans, B., Decarli, R., Farina, E., Walter, F., …Wainscoat, R. (2017). Physical Properties of 15 Quasars at z ≳ 6.5. Astrophysical Journal, 849(2), Article 91. https://doi.org/10.3847/1538-4357/aa9185

Quasars are galaxies hosting accreting supermassive black holes; due to their brightness, they are unique probes of the early universe. To date, only few quasars have been reported at z>6.5 (

The Pan-STARRS1 Medium-deep Survey: Star Formation Quenching in Group and Cluster Environments (2017)
Journal Article
Jian, H., Lin, L., Lin, K., Foucaud, S., Chen, C., Chiueh, T., …Waters, C. (2017). The Pan-STARRS1 Medium-deep Survey: Star Formation Quenching in Group and Cluster Environments. Astrophysical Journal, 845(1), Article 74. https://doi.org/10.3847/1538-4357/aa7de2

We make use of a catalog of 1600 Pan-STARRS1 groups produced by the probability friends-of-friends algorithm to explore how the galaxy properties, i.e., the specific star formation rate (SSFR) and quiescent fraction, depend on stellar mass and group-... Read More about The Pan-STARRS1 Medium-deep Survey: Star Formation Quenching in Group and Cluster Environments.

Measuring the Properties of Dark Energy with Photometrically Classified Pan-STARRS Supernovae. I. Systematic Uncertainty from Core-collapse Supernova Contamination (2017)
Journal Article
Jones, D., Scolnic, D., Riess, A., Kessler, R., Rest, A., Kirshner, R., …Waters, C. (2017). Measuring the Properties of Dark Energy with Photometrically Classified Pan-STARRS Supernovae. I. Systematic Uncertainty from Core-collapse Supernova Contamination. Astrophysical Journal, 843(1), Article 6. https://doi.org/10.3847/1538-4357/aa767b

The Pan-STARRS (PS1) Medium Deep Survey discovered over 5000 likely supernovae (SNe) but obtained spectral classifications for just 10% of its SN candidates. We measured spectroscopic host galaxy redshifts for 3147 of these likely SNe and estimate th... Read More about Measuring the Properties of Dark Energy with Photometrically Classified Pan-STARRS Supernovae. I. Systematic Uncertainty from Core-collapse Supernova Contamination.

First Lensed Quasar Systems from the VST-ATLAS Survey: One Quad, Two Doubles, and Two Pairs of Lensless Twins (2017)
Journal Article
Schechter, P., Morgan, N., Chehade, B., Metcalfe, N., Shanks, T., & McDonald, M. (2017). First Lensed Quasar Systems from the VST-ATLAS Survey: One Quad, Two Doubles, and Two Pairs of Lensless Twins. Astronomical Journal, 153(5), Article 219. https://doi.org/10.3847/1538-3881/aa6899

We have analyzed images from the VST-ATLAS survey to identify candidate gravitationally lensed quasar systems in a sample of WISE sources with $W1-W2\gt 0.7$. Results from follow-up spectroscopy with the Baade 6.5 m telescope are presented for eight... Read More about First Lensed Quasar Systems from the VST-ATLAS Survey: One Quad, Two Doubles, and Two Pairs of Lensless Twins.

Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample (2017)
Journal Article
Sesar, B., Hernitschek, N., Mitrović, S., Ivezić, Ž., Rix, H., Cohen, J., …Waters, C. (2017). Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample. Astronomical Journal, 153(5), Article 204. https://doi.org/10.3847/1538-3881/aa661b

RR Lyrae stars may be the best practical tracers of Galactic halo (sub-)structure and kinematics. The PanSTARRS1 (PS1) $3\pi $ survey offers multi-band, multi-epoch, precise photometry across much of the sky, but a robust identification of RR Lyrae s... Read More about Machine-learned Identification of RR Lyrae Stars from Sparse, Multi-band Data: The PS1 Sample.

A catalogue of white dwarf candidates in VST ATLAS (2017)
Journal Article
Gentile Fusillo, N., Raddi, R., Gänsicke, B., Hermes, J., Pala, A., Fuchs, J., …Shanks, T. (2017). A catalogue of white dwarf candidates in VST ATLAS. Monthly Notices of the Royal Astronomical Society, 469(1), 621-629. https://doi.org/10.1093/mnras/stx777

The Sloan Digital Sky Survey (SDSS) has created a knowledge gap between the Northern and the Southern hemispheres, which is very marked for white dwarfs: Only ≃15 per cent of the known white dwarfs are south of the equator. Here, we make use of the V... Read More about A catalogue of white dwarf candidates in VST ATLAS.

Investigating merging galaxies by using Pan-STARRS images (2017)
Journal Article
Lin, Y., Yu, P., Huang, J., Hwang, C., Chen, W., Kaiser, N., …Waters, C. (2017). Investigating merging galaxies by using Pan-STARRS images. Astronomy & Astrophysics, 600, Article A28. https://doi.org/10.1051/0004-6361/201628600

Aims. We studied the r′-, z′-, and y′-band images of merging galaxies from the observations of the Panoramic Survey Telescope & Rapid Response System (Pan-STARRS). The merging galaxies were selected from our merging catalog that was created by checki... Read More about Investigating merging galaxies by using Pan-STARRS images.

An updated Type II supernova Hubble diagram (2017)
Journal Article
Gall, E., Kotak, R., Leibundgut, B., Taubenberger, S., Hillebrandt, W., Kromer, M., …Waters, C. (2017). An updated Type II supernova Hubble diagram. Astronomy & Astrophysics, 611, Article A25. https://doi.org/10.1051/0004-6361/201731271

We present photometry and spectroscopy of nine Type II-P/L supernovae (SNe) with redshifts in the 0.045 ≲ z ≲ 0.335 range, with a view to re-examining their utility as distance indicators. Specifically, we apply the expanding photosphere method (EPM)... Read More about An updated Type II supernova Hubble diagram.

The SAMI Galaxy Survey: the cluster redshift survey, target selection and cluster properties (2017)
Journal Article
Owers, M., Allen, J., Baldry, I., Bryant, J., Cecil, G., Cortese, L., …Tonini, C. (2017). The SAMI Galaxy Survey: the cluster redshift survey, target selection and cluster properties. Monthly Notices of the Royal Astronomical Society, 468(2), 1824-1849. https://doi.org/10.1093/mnras/stx562

We describe the selection of galaxies targeted in eight low-redshift clusters (APMCC0917, A168, A4038, EDCC442, A3880, A2399, A119 and A85; 0.029 < z < 0.058) as part of the Sydney-AAO Multi-Object Integral field spectrograph Galaxy Survey (SAMI-GS).... Read More about The SAMI Galaxy Survey: the cluster redshift survey, target selection and cluster properties.

A Search for L/T Transition Dwarfs with Pan-STARRS1 and WISE. III. Young L Dwarf Discoveries and Proper Motion Catalogs in Taurus and Scorpius–Centaurus (2017)
Journal Article
Best, W., Liu, M., Magnier, E., Bowler, B., Aller, K., Zhang, Z., …Waters, C. (2017). A Search for L/T Transition Dwarfs with Pan-STARRS1 and WISE. III. Young L Dwarf Discoveries and Proper Motion Catalogs in Taurus and Scorpius–Centaurus. Astrophysical Journal, 837(1), Article 95. https://doi.org/10.3847/1538-4357/aa5df0

We present the discovery of eight young M7–L2 dwarfs in the Taurus star-forming region and the Scorpius–Centaurus OB Association, serendipitously found during a wide-field search for L/T transition dwarfs using Pan-STARRS1 (optical) and WISE (mid-inf... Read More about A Search for L/T Transition Dwarfs with Pan-STARRS1 and WISE. III. Young L Dwarf Discoveries and Proper Motion Catalogs in Taurus and Scorpius–Centaurus.