Massimo Marengo

TL;DR: In this article, the authors used the H I 21 cm line observations with the Very Large Array (VLA) to search for neutral atomic hydrogen associated with a stellar wind, showing that a mass loss of this magnitude, sustained over the preceding Cepheid lifetime of the star, could be sufficient to resolve a significant fraction of the discrepancy between the pulsation and evolutionary masses for this star.

TL;DR: In this article, the authors have mapped the Helix (NGC 7293) planetary nebula (PN) with the IRAC instrument on the Spitzer Space Telescope, which resolved the "cometary knots" and the radial rays extending into the outer regions of the PN.

TL;DR: In this article, the authors presented mid-infrared period-luminosity (PL) relations for RR Lyrae variables in the globular cluster M4 (NGC 6121) using observations from the Infrared Array Camera onboard the Spitzer Space Telescope.

TL;DR: In this article, the authors presented a study of the rate and efficiency of star formation in the NGC 6334 star-forming region using the NOAO Extremely Wide-Field Infrared Imager and combined them with observations taken with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope at wavelengths = 3.6, 4.5, 5.8, and 8.0 μm.

TL;DR: In this article, the authors studied the star formation history of NGC2264 and analyzed the primordial disk evolution of its members using data obtained with the Infrared Array Camera (IRAC) and the Multiband Imaging Photometer for Spitzer (MIPS) on board the Spitzer Space Telescope, combined with deep near-infrared (NIR) ground-based FLAMINGOS imaging and previously published optical data.