Van Loon, Jacco Th., Oliveira, Joana M., Gordon, Karl D., Meixner, Margaret, Shiao, Bernie, Boyer, Martha L., ...
[abridged] We present 52-93 micron spectra obtained with Spitzer in the MIPS-SED mode, of a representative sample of luminous compact far-IR sources in the LMC. These include carbon stars, OH/IR AGB...
Olmi, Luca, Ade, Peter A. R., Angles-Alcazar, Daniel, Bock, James J., Chapin, Edward L., De Luca, Massimo, ...
The Balloon-borne Large-Aperture Submillimeter Telescope (BLAST) carried out a 250, 350 and 500 micron survey of the galactic plane encompassing the Vela Molecular Ridge, with the primary goal of...
Marengo, Massimo, Sanchez, Mayly C.
We present a statistical method for the photometric search of rare astronomical sources based on the weighted k-NN method. A metric is defined in a multi-dimensional color-magnitude space based only...
A Review of AGB Mass Loss Imaging Techniques (2009)
Circumstellar imaging, across the electromagnetic spectrum, allows to derive fundamental diagnostics for the physics of mass loss in the AGB phase. I review the current status of the field, with...
Photometry using the Infrared Array Camera on the Spitzer Space Telescope (2008)
Hora, Joseph L., Carey, Sean, Surace, Jason, Marengo, Massimo, Lowrance, Patrick, Glaccum, William J., ...
We present several corrections for point-source photometry to be applied to data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. These corrections are necessary because of...
Photometry using the Infrared Array Camera on the Spitzer Space Telescope (2008)
Hora, Joseph L., Carey, Sean, Surace, Jason, Marengo, Massimo, Lowrance, Patrick, Glaccum, William J., ...
We present several corrections for point source photometry to be applied to data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. These corrections are necessary because of...
Planetary Nebulae: Exposing the Top Polluters of the ISM (2008)
Hora, Joseph L., Marengo, Massimo, Smith, Howard A., Cerrigone, Luciano, Latter, William B.
The high mass loss rates of stars in their asymptotic giant branch (AGB) stage of evolution is one of the most important pathways for mass return from stars to the ISM. In the planetary nebulae (PNe)...
Spitzer/IRAC Observations of AGB stars (2008)
Marengo, Massimo, Reiter, Megan, Fazio, Giovanni G.
We present here the first observation of galactic AGB stars with the InfraRed Array Camera (IRAC) onboard the Spitzer Space Telescope. Our sample consists of 48 AGB stars of different chemical...
Observations of Extrasolar Planets During the non-Cryogenic Spitzer Space Telescope Mission (2007)
Deming, Drake, Agol, Eric, Charbonneau, David, Cowan, Nicolas, Knutson, Heather, Marengo, Massimo
Precision infrared photometry from Spitzer has enabled the first direct studies of light from extrasolar planets, via observations at secondary eclipse in transiting systems. Current Spitzer results...
Identification of the Microlens in Event MACHO-LMC-20 (2006)
Kallivayalil, Nitya, Patten, Brian M., Marengo, Massimo, Alcock, Charles, Werner, Michael W., Fazio, Giovanni G., ...
We report on the identification of the lens responsible for microlensing event MACHO-LMC-20. As part of a \textit{Spitzer}/IRAC program conducting mid-infrared follow-up of the MACHO Large Magellanic...
Infrared Observations of The Helix Planetary Nebula (2006)
Hora, Joseph L., Latter, William B., Smith, Howard A., Marengo, Massimo
We have mapped the Helix (NGC 7293) planetary nebula (PN) with the IRAC instrument on the Spitzer Space Telescope. The Helix is one of the closest bright PN, and therefore provides an opportunity to...
Spitzer/IRAC Photometry of M, L, and T Dwarfs (2006)
Patten, Brian M., Stauffer, John R., Burrows, Adam, Marengo, Massimo, Hora, Joseph L., Luhman, Kevin L., ...
We present the results of a program to acquire photometry for eighty-six late-M, L, and T dwarfs using the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. We examine the behavior of...
Biller, Beth A., Close, Laird M., Li, Aigen, Marengo, Massimo, Bieging, John H., Hinz, Phil M., ...
We imaged the symbiotic star CH Cyg and two PSF calibration stars using the unique 6.5m MMT deformable secondary adaptive optics system. Our high-resolution (FWHM=0.3"), very high Strehl (98%+-2%)...
Identifying Primordial Substructure in NGC 2264 (2005)
Teixeira, Paula S., Lada, Charles J., Young, Erick T., Marengo, Massimo, Muench, August, Muzerolle, James, ...
We present new Spitzer Space Telescope observations of the young cluster NGC2264. Observations at 24 micron with the Multiband Imaging Photometer has enabled us to identify the most highly embedded...
The Circumstellar Environments of NML Cyg and the Cool Hypergiants (2005)
Schuster, Michael T., Humphreys, Roberta M., Marengo, Massimo
We present high-resolution HST WFPC2 images of compact nebulosity surrounding the cool M-type hypergiants NML Cyg, VX Sgr and S Per. The powerful OH/IR source NML Cyg exhibits a peculiar bean-shaped...
Absolute Calibration of the Infrared Array Camera on the Spitzer Space Telescope (2005)
Reach, William T., Megeath, S. T., Cohen, Martin, Hora, J., Carey, Sean, Surace, Jason, ...
The Infrared Array Camera (IRAC) on the Spitzer Space Telescope is absolutely calibrated by comparing photometry on a set of A stars near the north ecliptic pole to predictions based on ground-based...
IRAC Observations of Planetary Nebulae (2004)
Hora, Joseph L., Latter, William B., Allen, Lori E., Marengo, Massimo, Deutsch, Lynne K., Pipher, Judith L.
We present the initial results from the Infrared Array Camera (IRAC) imaging survey of planetary nebulae (PN). The IRAC colors of PN are red, especially when considering the 8.0 micron band. Emission...
An Error Analysis of the Geometric Baade-Wesselink Method (2003)
Marengo, Massimo, Karovska, Margarita, Sasselov, Dimitar D., Sanchez, Mayly
We derive an analytic solution for the minimization problem in the geometric Baade-Wesselink method. This solution allows deriving the distance and mean radius of a pulsating star by fitting its...
Quasar Winds as Dust Factories at High Redshift (2003)
Elvis, Martin, Marengo, Massimo, Karovska, Margarita
Winds from AGN and quasars will form large amounts of dust, as the cool gas in these winds passes through the (pressure, temperature) region where dust is formed in AGB stars. Conditions in the gas...
Spatially Resolved Circumnuclear Dust in Centaurus A (2003)
Karovska, Margarita, Marengo, Massimo, Elvis, Martin, Fazio, Giovanni, Hora, Joseph, Hinz, Philip, ...
In this paper we present results from our exploratory mid-IR study of Centaurus A circumnuclear environment using high-angular resolution imaging at the Magellan 6.5m telescope with the MIRAC/BLINC...
Marengo, Massimo, Karovska, Margarita, Sasselov, Dimitar D., Armstrong, John T., Nordgren, Tyler E.
The geometric Baade-Wesselink method is one of the most promising techniques for obtaining a better calibration of the Cepheid period-luminosity relation by means of interferometric measurements of...
Distances on Cosmological Scales with VLTI (2003)
Karovska, Margarita, Elvis, Martin, Marengo, Massimo
We present here a new method using interferometric measurements of quasars, that allows the determination of direct geometrical distances on cosmic scales. Quasar Broad Emission Line Regions sizes...
Cepheid Limb Darkening Models for the VLTI (2003)
Marengo, Massimo, Karovska, Margarita, Sasselov, Dimitar D., Papaliolios, Costas, Armstrong, J. T., Nordgren, Tyler
We present a new method to compute wavelength- and phase-dependent limb darkening corrections for classical Cepheids. These corrections are derived from hydrodynamic simulations and radiative...
An IR view of mass loss in Long Period Variables (2002)
Marengo, Massimo, Karovska, Margarita, Ivezic, Zeljko
We have investigated the mass loss processes in Long Period Variables, by combining radiative transfer modeling with mid-IR imaging and spectroscopic observations. We find a correlation between...
Smoking Quasars: a New Source for Cosmic Dust (2002)
Elvis, Martin, Marengo, Massimo, Karovska, Margarita
Although dust is widely found in astrophysics, forming dust is surprisingly difficult. The proper combination of low temperature (
Mid-IR Observations of Mira Circumstellar Environment (2001)
Marengo, Massimo, Karovska, Margarita, Fazio, Giovanni G., Hora, Joseph L., Hoffmann, William F., Dayal, Aditya, ...
This paper presents results from high-angular resolution mid-IR imaging of the Mira AB circumbinary environment using the MIRAC3 camera at the NASA Infrared Telescope Facility (IRTF). We resolved the...
Marengo, Massimo, Jayawardhana, Ray, Fazio, Giovanni G., Hoffmann, William F., Hora, Joseph L., Dayal, Aditya, ...
Most, if not all, stars are now believed to produce energetic outflows during their formation. Yet, almost 20 years after the discovery of bipolar outflows from young stars, the origins of this...