ABSTRACT The Plateau de Bure Interferometer Arcsecond Whirlpool Survey has mapped
the molecular gas in the central∼ 9 kpc of M51 in its 12 CO (1–0) line emission at a cloud …

We report the discovery of the progenitor of the recent Type IIn SN 2008S in the nearby
galaxy NGC 6946. Surprisingly, it was not found in deep, preexplosion optical images of its …

Variations in molecular cloud environments have the potential to affect the composition and
structure of the circumstellar disks therein. To this end, comparative analyses of nearby star …

ABSTRACT We use archived Infrared Array Camera images from the Spitzer Space
Telescope to show that many Class 0 protostars exhibit complex, irregular, and non …

Quasars (QSOs) hosting supermassive black holes are believed to reside in massive halos
harboring galaxy overdensities. However, many observations revealed average or low …

In this paper, we present a semi-supervised clustering-based framework for discovering
coherent subpopulations in heterogeneous image sets. Our approach involves limited …

We investigate the influence of blending on the Cepheid distance scale. Blending is the
close association of a Cepheid with one or more intrinsically luminous stars. High-resolution …

We present the results of a search for Miras and long-period variables (LPVs) in M33 using
griJHKS archival observations from the Canada–France–Hawaii Telescope. We use …

We use 64 deg 2 of deep V and R CCD images to measure the local V-and R-band
luminosity functions of galaxies. The V 0< 16.7 and R 0< 16.2 redshift samples contain 1255 …

For five years, WCSTools has provided image astrometry for astronomers who need
accurate positions for objects they wish to observe. Other functions have been added and …