Outputs (142)

The Pan-STARRS1 Proper-motion Survey for Young Brown Dwarfs in Nearby Star-forming Regions. I. Taurus Discoveries and a Reddening-free Classification Method for Ultracool Dwarfs (2018)
Journal Article
Zhang, Z., Liu, M., Best, W., Magnier, E., Aller, K., Chambers, K., …Waters, C. (2018). The Pan-STARRS1 Proper-motion Survey for Young Brown Dwarfs in Nearby Star-forming Regions. I. Taurus Discoveries and a Reddening-free Classification Method for Ultracool Dwarfs. Astrophysical Journal, 858(1), Article 41. https://doi.org/10.3847/1538-4357/aab269

We are conducting a proper-motion survey for young brown dwarfs in the Taurus-Auriga molecular cloud based on the Pan-STARRS1 3π Survey. Our search uses multi-band photometry and astrometry to select candidates, and is wider (370 deg2) and deeper (do... Read More about The Pan-STARRS1 Proper-motion Survey for Young Brown Dwarfs in Nearby Star-forming Regions. I. Taurus Discoveries and a Reddening-free Classification Method for Ultracool Dwarfs.

Charge Diffusion Variations in Pan-STARRS1 CCDs (2018)
Journal Article
Magnier, E., Tonry, J., Finkbeiner, D., Schlafly, E., Burgett, W., Chambers, K., …Waters, C. (2018). Charge Diffusion Variations in Pan-STARRS1 CCDs. Publications of the Astronomical Society of the Pacific, 130(988), Article 065002. https://doi.org/10.1088/1538-3873/aaaad8

Thick back-illuminated deep-depletion CCDs have superior quantum efficiency over previous generations of thinned and traditional thick CCDs. As a result, they are being used for wide-field imaging cameras in several major projects. We use observation... Read More about Charge Diffusion Variations in Pan-STARRS1 CCDs.

Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters (2018)
Journal Article
Jones, D., Scolnic, D., Riess, A., Rest, A., Kirshner, R., Berger, E., …Smith, K. (2018). Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters. Astrophysical Journal, 857(1), Article 51. https://doi.org/10.3847/1538-4357/aab6b1

We use 1169 Pan-STARRS supernovae (SNe) and 195 low-z (z < 0.1) SNe Ia to measure cosmological parameters. Though most Pan-STARRS SNe lack spectroscopic classifications, in a previous paper we demonstrated that photometrically classified SNe can be u... Read More about Measuring Dark Energy Properties with Photometrically Classified Pan-STARRS Supernovae. II. Cosmological Parameters.

Two more, bright, z > 6 quasars from VST ATLAS and WISE (2018)
Journal Article
Chehade, B., Carnall, A., Shanks, T., Diener, C., Fumagalli, M., Findlay, J., …Gonzalez-Solares, E. (2018). Two more, bright, z > 6 quasars from VST ATLAS and WISE. Monthly Notices of the Royal Astronomical Society, 478(2), 1649-1659. https://doi.org/10.1093/mnras/sty690

Recently, Carnall et al. discovered two bright high redshift quasars using the combination of the VST ATLAS and WISE surveys. The technique involved using the 3-D colour plane i − z: z − W1: W1 − W2 with the WISE W1(3.4 micron) and W2 (4.5 micron) ba... Read More about Two more, bright, z > 6 quasars from VST ATLAS and WISE.

Color Variabilities of Spectrally Defined Red QSOs at z = 0.3–1.2 (2018)
Journal Article
Chen, I., Hwang, C., Kaiser, N., Magnier, E., Metcalfe, N., & Waters, C. (2018). Color Variabilities of Spectrally Defined Red QSOs at z = 0.3–1.2. Theory and Decision, 855(1), Article 66. https://doi.org/10.3847/1538-4357/aaab5b

We study the brightness and the color variabilities of 34 red and 122 typical quasi-stellar objects (QSOs) at z = 0.3–1.2 using data from the Pan-STARRS Medium Deep Survey. The red and the typical QSOs are selected based on the ratios of the flux den... Read More about Color Variabilities of Spectrally Defined Red QSOs at z = 0.3–1.2.

A Color-locus Method for Mapping R V Using Ensembles of Stars (2018)
Journal Article
Lee, A., Green, G. M., Schlafly, E. F., Finkbeiner, D. P., Burgett, W., Chambers, K., …Waters, C. (2018). A Color-locus Method for Mapping R V Using Ensembles of Stars. Astrophysical Journal, 854(2), Article 79. https://doi.org/10.3847/1538-4357/aaaa6d

We present a simple but effective technique for measuring angular variation in R V across the sky. We divide stars from the Pan-STARRS1 catalog into Healpix pixels and determine the posterior distribution of reddening and R V for each pixel using two... Read More about A Color-locus Method for Mapping R V Using Ensembles of Stars.

Hydrogen-poor Superluminous Supernovae from the Pan-STARRS1 Medium Deep Survey (2018)
Journal Article
Lunnan, R., Chornock, R., Berger, E., Jones, D., Rest, A., Czekala, I., …Willman, M. (2018). Hydrogen-poor Superluminous Supernovae from the Pan-STARRS1 Medium Deep Survey. Astrophysical Journal, 852(2), Article 81. https://doi.org/10.3847/1538-4357/aa9f1a

We present light curves and classification spectra of 17 hydrogen-poor superluminous supernovae (SLSNe) from the Pan-STARRS1 Medium Deep Survey (PS1 MDS). Our sample contains all objects from the PS1 MDS sample with spectroscopic classification that... Read More about Hydrogen-poor Superluminous Supernovae from the Pan-STARRS1 Medium Deep Survey.

Photometry and Proper Motions of M, L, and T Dwarfs from the Pan-STARRS1 3π Survey (2017)
Journal Article
Best, W., Magnier, E., Liu, M., Aller, K., Zhang, Z., Burgett, W., …Waters, C. (2018). Photometry and Proper Motions of M, L, and T Dwarfs from the Pan-STARRS1 3π Survey. Astrophysical Journal Supplement, 234(1), Article 1. https://doi.org/10.3847/1538-4365/aa9982

We present a catalog of 9888 M, L and T dwarfs detected in the Pan-STARRS1 3π Survey (PS1), covering three-quarters of the sky. Our catalog contains nearly all known objects of spectral types L0–T2 in the PS1 field, with objects as early as M0 and as... Read More about Photometry and Proper Motions of M, L, and T Dwarfs from the Pan-STARRS1 3π Survey.

The Time-domain Spectroscopic Survey: Target Selection for Repeat Spectroscopy (2017)
Journal Article
MacLeod, C., Green, P., Anderson, S., Eracleous, M., Ruan, J., Runnoe, J., …Waters, C. (2017). The Time-domain Spectroscopic Survey: Target Selection for Repeat Spectroscopy. Astronomical Journal, 155(1), Article 6. https://doi.org/10.3847/1538-3881/aa99da

As astronomers increasingly exploit the information available in the time domain, spectroscopic variability in particular opens broad new channels of investigation. Here we describe the selection algorithms for all targets intended for repeat spectro... Read More about The Time-domain Spectroscopic Survey: Target Selection for Repeat Spectroscopy.

The Geometry of the Sagittarius Stream from Pan-STARRS1 3π RR Lyrae (2017)
Journal Article
Hernitschek, N., Sesar, B., Rix, H., Belokurov, V., Martinez-Delgado, D., Martin, N. F., …Draper, P. W. (2017). The Geometry of the Sagittarius Stream from Pan-STARRS1 3π RR Lyrae. Astrophysical Journal, 850(1), Article 96. https://doi.org/10.3847/1538-4357/aa960c

We present a comprehensive and precise description of the Sagittarius (Sgr) stellar stream's 3D geometry as traced by its old stellar population. This analysis draws on the sample of ∼44,000 RR Lyrae (RRab) stars from the Pan-STARRS1 (PS1) 3π survey... Read More about The Geometry of the Sagittarius Stream from Pan-STARRS1 3π RR Lyrae.