We present optical light curves, redshifts, and classifications for 365 spectroscopically
confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1) Medium …

We present the Stage II results from the ongoing Satellites Around Galactic Analogs (SAGA)
Survey. Upon completion, the SAGA Survey will spectroscopically identify satellite galaxies …

A system of 5020 robotic fiber positioners was installed in 2019 on the Mayall Telescope, at
Kitt Peak National Observatory. The robots automatically retarget their optical fibers every 10 …

ABSTRACT The 3D-HST and CANDELS programs have provided WFC3 and ACS
spectroscopy and photometry over≈ 900 arcmin 2 in five fields: AEGIS, COSMOS, GOODS …

We describe the design, manufacture, and performance of bare-fiber integral field units
(IFUs) for the SDSS-IV survey Map** Nearby Galaxies at Apache Point Observatory …

We present the optical spectroscopic evolution of SN 2023ixf seen in subnight cadence
spectra from 1.18 to 15 days after explosion. We identify high-ionization emission features …

We present the survey strategy and early results of the" Satellites Around Galactic
Analogs"(SAGA) Survey. The SAGA Survey's goal is to measure the distribution of satellite …

Stern et al. presented a study of Wide-field Infrared Survey Explorer (WISE) selection of
active galactic nuclei (AGNs) in the 2 deg 2 COSMOS field, finding that a simple criterion W1 …

The flare of radiation from the tidal disruption and accretion of a star can be used as a
marker for supermassive black holes that otherwise lie dormant and undetected in the …

We present an analysis of the mid-infrared (MIR) and optical properties of type 1 (broad-line)
quasars detected by the Spitzer Space Telescope. The MIR color-redshift relation is …