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9 papers · 2 filters
Finding, characterizing and classifying variable sources in multi-epoch sky surveys: QSOs and RR Lyrae in PS1 3 data
Nina Hernitschek, Edward F. Schlafly, Branimir Sesar +14
In area and depth, the Pan-STARRS1 (PS1) 3 survey is unique among many-epoch, multi-band surveys and has enormous potential for all-sky identification of variable sources. PS1 h…
Pan-STARRS1 variability of XMM-COSMOS AGN. I. Impact on photometric redshifts
T. Simm, R. Saglia, M. Salvato +12
[Abbreviated] Upcoming large area sky surveys like EUCLID and eROSITA crucially depend on accurate photometric redshifts (photo-z). The identification of variable sources, such as…
A Systematic Search for Changing-Look Quasars in SDSS
Chelsea L. MacLeod, Nicholas P. Ross, Andy Lawrence +10
We present a systematic search for changing-look quasars based on repeat photometry from SDSS and Pan-STARRS1, along with repeat spectra from SDSS and SDSS-III BOSS. Objects with l…
A Three-Dimensional Map of Milky-Way Dust
Gregory M. Green, Edward F. Schlafly, Douglas P. Finkbeiner +13
We present a three-dimensional map of interstellar dust reddening, covering three-quarters of the sky out to a distance of several kiloparsecs, based on Pan-STARRS 1 and 2MASS phot…
Sagittarius II, Draco II and Laevens 3: three new Milky Way satellites discovered in the Pan-STARRS 1 3pi Survey
Benjamin P. M. Laevens, Nicolas F. Martin, Edouard J. Bernard +17
We present the discovery of three new Milky Way satellites from our search for compact stellar overdensities in the photometric catalog of the Panoramic Survey Telescope and Rapid…
A New Faint Milky Way Satellite Discovered in the Pan-STARRS1 3 pi Survey
Benjamin P. M. Laevens, Nicolas F. Martin, Rodrigo A. Ibata +21
We present the discovery of a faint Milky Way satellite, Laevens 2/Triangulum II, found in the Panoramic Survey Telescope And Rapid Response System (Pan-STARRS 1) 3 pi imaging data…
Constraining the radio-loud fraction of quasars at z>5.5
E. Bañados, B. P. Venemans, E. Morganson +18
Radio-loud Active Galactic Nuclei at z~2-4 are typically located in dense environments and their host galaxies are among the most massive systems at those redshifts, providing key…
The identification of z-dropouts in Pan-STARRS1: three quasars at 6.5<z<6.7
B. P. Venemans, E. Bañados, R. Decarli +30
Luminous distant quasars are unique probes of the high redshift intergalactic medium (IGM) and of the growth of massive galaxies and black holes in the early universe. Absorption d…
The Nature and Orbit of the Ophiuchus Stream
B. Sesar, J. Bovy, E. J. Bernard +20
The Ophiuchus stream is a recently discovered stellar tidal stream in the Milky Way. We present high-quality spectroscopic data for 14 stream member stars obtained using the Keck a…