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Dwarf nova outbursts detected by ASAS-SN
The unprecedented sky coverage and observing cadence of the All-Sky Automated Survey for SuperNovae (ASAS-SN) has resulted in the discovery and continued monitoring of a large... -
AAVSO and DASCH light curve of U Mon
We present an X-ray through submillimeter observations of the classical RV Tauri (RVb-type) variable U Mon, a post-asymptotic giant branch (AGB) binary with a circumbinary disk... -
SMEI photometry of Betelgeuse
We conduct a rigorous examination of the nearby red supergiant Betelgeuse by drawing on the synthesis of new observational data and three different modeling techniques. Our... -
Spectroscopic binary multiplicity with Robo-AO
We present higher-order multiplicity results for 60 solar-type spectroscopic binaries based on 0.75{mu}m imaging data taken by the robotic adaptive optics (Robo-AO) system at... -
SN 2018hna photometry & spectroscopy obs.
High-cadence ultraviolet, optical, and near-infrared photometric and low-resolution spectroscopic observations of the peculiar Type II supernova (SN) 2018hna are presented. The... -
BVRI photom. of DV Psc and known short-period EBs
Using 27 sets of new multiband photometry light curves acquired from our long-term photometric campaign carried out in the last 5yr and high-resolution spectroscopic data from... -
Opt & NIR SMARTS/ANDICAM photometry for DQ Tau
We present multiepoch optical and near-infrared (NIR) photometry and spectroscopy of the spectroscopic binary T Tauri star DQ Tau. The photometric monitoring, obtained using... -
UV to NIR light curves of type Ia SN 2017erp
We present space-based ultraviolet/optical photometry and spectroscopy with the Swift Ultra-Violet/Optical Telescope and Hubble Space Telescope (HST), respectively, along with... -
NUV to NIR photometry of type IIP ASASSN-16at
We report distinctly double-peaked H{alpha} and H{beta} emission lines in the late-time, nebular-phase spectra (>~200 days) of the otherwise normal at early phases (<~100... -
Detached eclipsing binaries with Gaia parallaxes
Using a sample of 81 Galactic, detached eclipsing binary stars we investigated the global zero-point shift of their parallaxes with the Gaia Data Release 2 (DR2) parallaxes. The... -
BVI photometric catalog of star clusters in NGC4589
NGC4589, a bright E2 merger-remnant galaxy, hosts the peculiar fast and faint calcium-rich supernova SNIb SN2005cz. The progenitor of Ca-rich SNeIb has been controversial: it... -
Spectroscopy of low-metallicity star candidates
We present results from an observing campaign to identify low-metallicity stars in the Best & Brightest Survey. From medium-resolution (R~1200-2000) spectroscopy of 857... -
VVV and DECaPS photometry of the GC Minni 22
We use deep near-IR photometry of the VISTA Variables in the Via Lactea (VVV) Survey and deep DECam Plane Survey (DECaPS) optical photometry to confirm the physical reality of... -
iPTF 16asu photometry follow-up
Wide-field surveys are discovering a growing number of rare transients whose physical origin is not yet well understood. Here we present optical and UV data and analysis of... -
Bgri light curves of PTF11kmb and PTF12bho
We present the Palomar Transient Factory discoveries and the photometric and spectroscopic observations of PTF11kmb and PTF12bho. We show that both transients have properties... -
Eclipsing LMXB at the center of 3FGL J0427.9-6704
We report the discovery of an eclipsing low-mass X-ray binary at the center of the 3FGL error ellipse of the unassociated Fermi/Large Area Telescope {gamma}-ray source 3FGL... -
Variable stars in the field of Andromeda XXV. III.
We present B and V time series photometry of Andromeda XXV, the third galaxy in our program on the Andromeda's satellites, which we have imaged with the Large Binocular Cameras... -
Variable stars in M31 & M33. III. YSGs & RSGs
Recent supernova (SN) and transient surveys have revealed an increasing number of non-terminal stellar eruptions. Though the progenitor class of these eruptions includes the... -
Carina project IX: UBVI data of Carina variables
We present new multiband (UBVI) time-series data of helium burning variables in the Carina dwarf spheroidal galaxy. The current sample includes 92 RR Lyrae --six of them are new... -
UV-Optical light curves of the SNIa iPTF14bdn
We present ultraviolet (UV) and optical photometry and spectra of the 1999aa-like supernova (SN) iPTF14bdn. The UV data were observed using the Swift Ultraviolet/Optical...
