Astrophysics - Solar and Stellar Astrophysics

Multi-color Optical and Near-infrared Light Curves of 64 Stripped-envelope Core-Collapse Supernovae

We present a densely sampled, homogeneous set of light curves of 64 low- redshift (z <åisebox-0.5ex 0.05) stripped-envelope supernovae (SNe of Type IIb, Ib, Ic, and Ic- BL). These data were obtained between 2001 and 2009 at the Fred L. Whipple …

A mid-infrared study of RR Lyrae stars with the Wide-field Infrared Survey Explorer all-sky data release

We present a group of 3740 previously identified RR Lyrae variables well observed with the Wide-field Infrared Survey Explorer (WISE). We explore how the shape of the generic RR Lyrae mid-infrared light curve varies over period-space, comparing light …

The highly eccentric detached eclipsing binaries in ACVS and MACC

Next-generation synoptic photometric surveys will yield unprecedented (for the astronomical community) volumes of data and the processes of discovery and rare-object identification are, by necessity, becoming more autonomous. Such autonomous searches …

Mid-infrared period-luminosity relations of RR Lyrae stars derived from the AllWISE Data Release.

We use photometry from the recent AllWISE Data Release of the Wide-field Infrared Survey Explorer (WISE) of 129 calibration stars, combined with prior distances obtained from the established M$_V$-[Fe/H] relation and Hubble Space Telescope …

Probing the distance and morphology of the Large Magellanic Cloud with RR Lyrae stars

We present a Bayesian analysis of the distances to 15,040 Large Magellanic Cloud (LMC) RR Lyrae stars using $V$- and $I$-band light curves from the Optical Gravitational Lensing Experiment, in combination with new $z$-band observations from the Dark …

SN 2010mb: Direct Evidence for a Supernova Interacting with a Large Amount of Hydrogen-free Circumstellar Material

We present our observations of SN 2010mb, a Type Ic supernova (SN) lacking spectroscopic signatures of H and He. SN 2010mb has a slowly declining light curve (LC) (åisebox-0.5ex 600 days) that cannot be powered by $^56$Ni/$^56$Co radioactivity, the …

Towards precision distances and 3D dust maps using broadband Period--Magnitude relations of RR Lyrae stars

We determine the period-magnitude relations of RR Lyrae stars in 13 photometric bandpasses from 0.4 to 12 μm using timeseries observations of 134 stars. The Bayesian formalism, extended from our previous work to include the effects of line-of-sight …

The Rise of SN 2014J in the Nearby Galaxy M82

We report on the discovery of SN 2014J in the nearby galaxy M82. Given its proximity, it offers the best opportunity to date to study a thermonuclear supernova (SN) over a wide range of the electromagnetic spectrum. Optical, near-IR, and mid-IR …

Type IIb Supernova SN 2011dh: Spectra and Photometry from the Ultraviolet to the Near-infrared

We report spectroscopic and photometric observations of the Type IIb SN 2011dh obtained between 4 and 34 days after the estimated date of explosion (May 31.5 UT). The data cover a wide wavelength range from 2000 ̊A in the ultraviolet (UV) to 2.4 μm …

An early and comprehensive millimetre and centimetre wave and X-ray study of SN 2011dh: a non-equipartition blast wave expanding into a massive stellar wind

Only a handful of supernovae (SNe) have been studied in multiwavelengths from the radio to X-rays, starting a few days after the explosion. The early detection and classification of the nearby Type IIb SN 2011dh/PTF 11eon in M51 provides a unique …