Publications (110)
Photometric and Spectroscopic Evolution of the Type IIP SN 2007it to Day 944
J. E. Andrews, B. E. K Sugerman, Geoffrey Clayton +9
SN 2007it is a bright, Type IIP supernova which shows indications of both pre-existing and newly formed dust. The visible photometry shows a bright late-time luminosity, powered by…
The Mass-Loss Return from Evolved Stars to the Large Magellanic Cloud II: Dust Properties for Oxygen-Rich Asymptotic Giant Branch Stars
Benjamin A. Sargent, S. Srinivasan, M. Meixner +11
We model multi-wavelength broadband UBVIJHKs and Spitzer IRAC and MIPS photometry and IRS spectra from the SAGE and SAGE-Spec observing programs of two oxygen-rich asymptotic giant…
Ice chemistry in embedded young stellar objects in the Large Magellanic Cloud
J. M. Oliveira, J. Th. van Loon, C. -H. R. Chen +12
We present spectroscopic observations of a sample of 15 embedded young stellar objects (YSOs) in the Large Magellanic Cloud (LMC). These observations were obtained with the Spitzer…
Chemical depletion in the Large Magellanic Cloud: RV Tauri stars and the photospheric feedback from their dusty discs
C. Gielen, H. Van Winckel, M. Reyniers +11
Aims: By studying the photospheric abundances of 4 RV Tauri stars in the LMC, we test whether the depletion pattern of refractory elements, seen in similar Galactic sources, is als…
The Infrared Properties of Massive Stars in the Magellanic Clouds
A. Z. Bonanos, D. J. Lennon, D. L. Massa +9
We present results of our study of the infrared properties of massive stars in the Large and Small Magellanic Clouds, which are based on the Spitzer SAGE surveys of these galaxies.…
The Mass-Loss Return From Evolved Stars to The Large Magellanic Cloud VI: Luminosities and Mass-Loss Rates on Population Scales
D. Riebel, S. Srinivasan, B. Sargent +1
We present results from the first application of the Grid of Red Supergiant and Asymptotic Giant Branch ModelS (GRAMS) model grid to the entire evolved stellar population of the La…
The Discovery of a Population of Pre-Main Sequence Stars in N66/NGC346 from Deep HST/ACS Image
A. Nota, M. Sirianni, E. Sabbi +9
We report the discovery of a rich population of low mass stars in the young, massive star forming region N66/NGC346 in the Small Magellanic Cloud, from deep V, I and H alpha images…
The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification I
Paul M. Woods, J. M. Oliveira, F. Kemper +55
We present the classification of 197 point sources observed with the Infrared Spectrograph in the SAGE-Spec Legacy program on the Spitzer Space Telescope. We introduce a decision-t…
The Science Vision for the Stratospheric Observatory for Infrared Astronomy (SOFIA)
T. L. Roellig, E. E. Becklin, N. J. Evans +7
An updated Science Vision for the SOFIA project is presented, including an overview of the characteristics and capabilities of the observatory and first generation instruments. A p…
The destruction and survival of dust in the shell around SN 2008S
R. Wesson, M. J. Barlow, B. Ercolano +8
SN 2008S erupted in early 2008 in the grand design spiral galaxy NGC 6946. The progenitor was detected by Prieto et al. in Spitzer Space Telescope images taken over the four years…
Spitzer SAGE Infrared Photometry of Massive Stars in the Large Magellanic Cloud
A. Z. Bonanos, D. L. Massa, M. Sewilo +11
We present a catalog of 1750 massive stars in the Large Magellanic Cloud, with accurate spectral types compiled from the literature, and a photometric catalog for a subset of 1268…
Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A
C. Fransson, M. J. Barlow, P. J. Kavanagh +31
The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that a compact object (a neutron star or black hole) was formed in the explosion. There…
Cold dust clumps in dynamically hot gas
S. Kim, E. Kwon, S. C. Madden +27
We present clumps of dust emission from Herschel observations of the Large Magellanic Cloud (LMC) and their physical and statistical properties. We catalog cloud features seen in t…
Pushing the Boundaries of Conventional Core-Collapse Supernovae: The Extremely Energetic Supernova SN 2003ma
A. Rest, R. J. Foley, S. Gezari +34
We report the discovery of a supernova (SN) with the highest apparent energy output to date and conclude that it represents an extreme example of the Type IIn subclass. The SN, whi…
Subarcsecond Mid-IR Structure of the Dust Shell around IRAS 22272+5435
T. Ueta, M. Meixner, P. M. Hinz +6
We report sub-arcsecond imaging of extended mid-infrared emission from a proto-planetary nebula (PPN), \iras 22272+5435, performed at the MMT observatory with its newly upgraded 6.…
Progressive star formation in the young SMC cluster NGC 602
Lynn Redding Carlson, E. Sabbi, M. Sirianni +9
NGC 602 is a young stellar cluster located in a peripheral region of the Small Magellanic Cloud known as the wing. Far from the main body of the galaxy and abutting the Magellanic…
Silicate features in Galactic and extragalactic post-AGB discs
C. Gielen, J. Bouwman, H. Van Winckel +7
Aims. In this paper we study the Spitzer and TIMMI2 infrared spectra of post-AGB disc sources, both in the Galaxy and the LMC. Using the observed infrared spectra we determine the…
An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS). IV. Discovery of High-Redshift AGB Analogs
M. L. Boyer, K. B. W. McQuinn, M. A. T. Groenewegen +13
The survey for DUST in Nearby Galaxies with Spitzer (DUSTiNGS) identified several candidate Asymptotic Giant Branch (AGB) stars in nearby dwarf galaxies and showed that dust can fo…
The Dust-to-Gas Ratio in the Small Magellanic Cloud Tail
K. D. Gordon, C. Bot, E. Muller +21
The Tail region of the Small Magellanic Cloud (SMC) was imaged using the MIPS instrument on the Spitzer Space Telescope as part of the SAGE-SMC Spitzer Legacy. Diffuse infrared emi…
Investigating the metallicity dependence of the mass-loss rate relation of red supergiants
K. Antoniadis, E. Zapartas, A. Z. Bonanos +8
Red supergiants (RSGs) are cool and evolved massive stars exhibiting enhanced mass loss compared to their main sequence phase, affecting their evolution and fate. However, the theo…
Cold Dust in Three Massive Evolved Stars in the LMC
M. L. Boyer, B. Sargent, J. Th. van Loon +19
Massive evolved stars can produce large amounts of dust, and far-infrared (IR) data are essential for determining the contribution of cold dust to the total dust mass. Using Hersch…
Star-formation rates from young-star counts and the structure of the ISM across the NGC346/N66 complex in the SMC
S. Hony, D. A. Gouliermis, F. Galliano +21
The rate at which interstellar gas is converted into stars, and its dependence on environment, is one of the pillars on which our understanding of the visible Universe is build. We…
The Young Stellar Population of the metal-poor galaxy NGC 6822
Olivia C. Jones, Michael J. Sharp, Megan Reiter +3
We present a comprehensive study of massive young stellar objects (YSOs) in the metal-poor galaxy NGC 6822 using IRAC and MIPS data obtained from the {\em Spitzer Space Telescope}.…
The youngest massive protostars in the Large Magellanic Cloud
M. Sewilo, R. Indebetouw, L. R. Carlson +19
We demonstrate the unique capabilities of Herschel to study very young luminous extragalactic young stellar objects (YSOs) by analyzing a central strip of the Large Magellanic Clou…
The evolution of the mid-infrared spectrum of SN 1987A observed with the JWST/MIRI-MRS
P. J. Kavanagh, M. J. Barlow, C. Fransson +19
Supernova (SN) 1987A provides a unique laboratory for investigating many aspects of SN physics and evolution. An observation at Day 12927 (35.4 yr) since the explosion with the Mid…
Dust in the bright supernova remnant N49 in the LMC
M. Otsuka, J. Th. van Loon, K. S. Long +14
We investigate the dust associated with the supernova remnant (SNR) N49 in the Large Magellanic Cloud (LMC) as observed with the Herschel Space Observatory. N49 is unusually bright…
The global gas and dust budget of the Large Magellanic Cloud: AGB stars and supernovae, and the impact on the ISM evolution
M. Matsuura, M. J. Barlow, A. A. Zijlstra +10
We report on an analysis of the gas and dust budget in the the interstellar medium (ISM) of the Large Magellanic Cloud (LMC). Recent observations from the Spitzer Space Telescope e…
Infrared properties of Active OB stars in the Magellanic Clouds from the Spitzer SAGE Survey
A. Z. Bonanos, D. J. Lennon, D. L. Massa +9
We present a study of the infrared properties of 4922 spectroscopically confirmed massive stars in the Large and Small Magellanic Clouds, focusing on the active OB star population.…
Is Dust Forming on the Red Giant Branch in 47 Tuc?
M. L. Boyer, J. Th. van Loon, I. McDonald +13
Using Spitzer IRAC observations from the SAGE-SMC Legacy program and archived Spitzer IRAC data, we investigate dust production in 47 Tuc, a nearby massive Galactic globular cluste…
Dust emission at 8-mic and 24-mic as Diagnostics of HII Region Radiative Transfer
M. S. Oey, J. Lopez-Hernandez, J. A. Kellar +10
We use the Spitzer SAGE survey of the Magellanic Clouds to evaluate the relationship between the 8-mic PAH emission, 24-mic hot dust emission, and HII region radiative transfer. We…
The Mass-Loss Return from Evolved Stars to the Large Magellanic Cloud IV: Construction and Validation of a Grid of Models for Oxygen-Rich AGB Stars, Red Supergiants, and Extreme AGB Stars
Benjamin A. Sargent, S. Srinivasan, M. Meixner
To measure the mass loss from dusty oxygen-rich (O-rich) evolved stars in the Large Magellanic Cloud (LMC), we have constructed a grid of models of spherically-symmetric dust shell…
Astro2020 Science White Paper: The fundamentals of outflows from evolved stars
E. De Beck, M. L. Boyer, V. Bujarrabal +16
Models of the chemical evolution of the interstellar medium, galaxies, and the Universe rely on our understanding of the amounts and chemical composition of the material returned b…
Dust Production and Particle Acceleration in Supernova 1987A Revealed with ALMA
R. Indebetouw, M. Matsuura, E. Dwek +23
Supernova (SN) explosions are crucial engines driving the evolution of galaxies by shock heating gas, increasing the metallicity, creating dust, and accelerating energetic particle…
Evidence for Pre-Existing Dust in the Bright Type IIn SN 2010jl
J. E. Andrews, Geoffrey C. Clayton, R. Wesson +11
SN 2010jl was an extremely bright, Type IIn SNe which showed a significant IR excess no later than 90 days after explosion. We have obtained Spitzer 3.6 and 4.5 \mum and JHK observ…
Two Subclasses of Proto-Planetary Nebulae: Model Calculations
M. Meixner, T. Ueta, M. Bobrowsky +1
We use detailed radiative transfer models to investigate the differences between the Star-Obvious Low-level-Elongated proto-planetary nebulae (SOLE PPNs) and DUst-Prominent Longitu…
Detached shells as tracers of AGB-ISM bow shocks
C. J. Wareing, Albert A. Zijlstra, Angela K. Speck +10
New Spitzer imaging observations have revealed the structure around the Mira variable star R Hya to be a one-sided parabolic arc 100 arcsec to the West stretching from North to Sou…
The thermal dust emission in the N158-N159-N160 (LMC) star forming complex mapped by Spitzer, Herschel and LABOCA
M. Galametz, S. Hony, F. Galliano +21
We present a study of the infrared/submm emission of the LMC star forming complex N158-N159-N160. Combining observations from the Spitzer Space Telescope (3.6-70um), the Herschel S…
The mass-loss return from evolved stars to the Large Magellanic Cloud III. Dust properties for carbon-rich asymptotic giant branch stars
Sundar Srinivasan, B. A. Sargent, M. Matsuura +9
We present a 2Dust model for the dust shell around a LMC long-period variable (LPV) previously studied as part of the OGLE survey. OGLE LMC LPV 28579 (SAGE J051306.40-690946.3) is…
The Infrared Light Curve of SN 2011fe in M101 and the Distance to M101
T. Matheson, R. R. Joyce, L. E. Allen +42
We present near infra-red light curves of supernova (SN) 2011fe in M101, including 34 epochs in H band starting fourteen days before maximum brightness in the B-band. The light cur…
Dust composition and mass-loss return from the luminous blue variable R71 in the LMC
S. Guha Niyogi, M. Min, M. Meixner +3
We present an analysis of mid-and far-infrared (IR) spectrum and spectral energy distribution (SED) of the LBV R71 in the LMC.This work aims to understand the overall contribution…
The Stellar Mass Distribution in the Giant Star Forming Region NGC 346
E. Sabbi, M. Sirianni, A. Nota +8
Deep F555W and F814W Hubble Space Telescope ACS images are the basis for a study of the present day mass function (PDMF) of NGC346, the largest active star forming region in the Sm…
Herschel spectroscopy of Massive Young Stellar Objects in the Magellanic Clouds
J. M. Oliveira, J. Th. van Loon, M. Sewilo +11
We present Herschel Space Observatory Photodetector Array Camera and Spectrometer (PACS) and Spectral and Photometric Imaging Receiver Fourier Transform Spectrometer (SPIRE FTS) sp…
The ALMA detection of CO rotational line emission in AGB stars in the Large Magellanic Cloud
M. A. T. Groenewegen, W. H. T. Vlemmings, P. Marigo +21
Context: Low- and intermediate-mass stars lose most of their stellar mass at the end of their lives on the asymptotic giant branch (AGB). Determining gas and dust mass-loss rates (…
The Spitzer discovery of a galaxy with infrared emission solely due to AGN activity
S. Hony, F. Kemper, Paul M. Woods +14
We present a galaxy (SAGE1CJ053634.78-722658.5) at a redshift of 0.14 of which the IR is entirely dominated by emission associated with the AGN. We present the 5-37 um Spitzer/IRS…
Unraveling the Helix Nebula: Its Structure and Knots
C. R. O'Dell, P. R. McCullough, M. Meixner
Through HST imaging of the inner part of the main-ring of the Helix Nebula together with CTIO 4-m images of the fainter outer parts, we have an unprecedented-quality view of the ne…
Detection of a Far-Infrared Bow-Shock Nebula Around R Hya: the First MIRIAD Results
T. Ueta, A. K. Speck, R. E. Stencel +10
We present the first results of the MIRIAD (MIPS [Multiband Imaging Photometer for Spitzer] Infra-Red Imaging of AGB [asymptotic giant branch] Dustshells) project using the Spitzer…
Star formation history in the SMC: the case of NGC602
M. Cignoni, E. Sabbi, A. Nota +9
Deep HST/ACS photometry of the young cluster NGC 602, located in the remote low density "wing" of the Small Magellanic Cloud, reveals numerous pre-main sequence stars as well as yo…
HD 97048's Circumstellar Environment as Revealed by a HST/ACS Coronagraphic Study of Disk Candidate Stars
R. L. Doering, M. Meixner, S. T. Holfeltz +5
We present the results of a coronagraphic scattered-light imaging survey of six young disk candidate stars using the Hubble Space Telescope Advanced Camera for Surveys. The observa…
The dust properties and physical conditions of the interstellar medium in the LMC massive star forming complex N11
M. Galametz, S. Hony, M. Albrecht +19
We combine Spitzer and Herschel data of the star-forming region N11 in the Large Magellanic Cloud to produce detailed maps of the dust properties in the complex and study their var…
JWST NIRSpec observations of Supernova 1987A -- from the inner ejecta to the reverse shock
J. Larsson, C. Fransson, B. Sargent +23
We present initial results from JWST NIRSpec integral field unit observations of the nearby Supernova (SN) 1987A. The observations provide the first spatially-resolved spectroscopy…
Origins Space Telescope Mission Concept Study Report
M. Meixner, A. Cooray, D. Leisawitz +66
The Origins Space Telescope (Origins) traces our cosmic history, from the formation of the first galaxies and the rise of metals to the development of habitable worlds and present-…
Deep JWST/NIRCam imaging of Supernova 1987A
Mikako Matsuura, M. Boyer, Richard G. Arendt +46
JWST/NIRCam obtained high angular-resolution (0.05-0.1''), deep near-infrared 1--5 micron imaging of Supernova (SN) 1987A taken 35 years after the explosion. In the NIRCam images,…
The stellar content of H72.97-69.39, a potential super star cluster in the making
M. Andersen, H. Zinnecker, A. S. Hirschauer +2
Young Massive Clusters (YMCs) and Super Star Clusters (SSCs) represent an extreme mode of star formation. Far-infrared imaging of the Magellanic Clouds has identified one potential…
The compact object and innermost ejecta of SN 1987A
J. Larsson, C. Fransson, P. J. Kavanagh +12
The first JWST observations of SN 1987A provided clear evidence that a compact object is ionizing the innermost ejecta. Here we analyze a second epoch of JWST NIRSpec and MIRI/MRS…
CO line observations of OH/IR stars in the inner Galactic Bulge: Characteristics of stars at the tip of the AGB
H. Olofsson, T. Khouri, B. A. Sargent +10
12CO and 13CO lines, as well as a mm-wave continuum, have been observed for a sample of 22 OH/IR stars in directions within 2 degrees of the Galactic Centre. Photometry data have b…
Optical and Infrared Analysis of Type II SN 2006BC
Joseph S. Gallagher, B. E. K. Sugerman, Geoffrey C. Clayton +8
We present nebular phase optical imaging and spectroscopy and near/mid-IR imaging of the Type II SN 2006bc. Observations reveal the central wavelength of the symmetric H line p…
The Dust Budget of the SMC: Are AGB Stars the Primary Dust Source at Low Metallicity?
Martha L. Boyer, S. Srinivasan, D. Riebel +7
We estimate the total dust input from the cool evolved stars in the Small Magellanic Cloud (SMC), using the 8 micron excess emission as a proxy for the dust-production rate. We fin…
Herschel Inventory of The Agents of Galaxy Evolution (HERITAGE): the Large Magellanic Cloud dust
M. Meixner, F. Galliano, S. Hony +52
The HERschel Inventory of The Agents of Galaxy Evolution (HERITAGE) of the Magellanic Clouds will use dust emission to investigate the life cycle of matter in both the Large and Sm…
Carbon Monoxide in the Cold Debris of Supernova 1987A
J. Kamenetzky, R. McCray, R. Indebetouw +27
We report spectroscopic and imaging observations of rotational transitions of cold CO and SiO in the ejecta of SN1987A, the first such emission detected in a supernova remnant. In…
Herschel Observations of a Newly Discovered UX Ori Star in the Large Magellanic Cloud
Geoffrey C. Clayton, B. Sargent, M. L. Boyer +15
The LMC star, SSTISAGE1C J050756.44-703453.9, was first noticed during a survey of EROS-2 lightcurves for stars with large irregular brightness variations typical of the R Coronae…
Hubble Space Telescope imaging of the compact elliptical galaxy M32 reveals a dearth of carbon stars
O. C. Jones, M. L. Boyer, I. McDonald +2
We present new Hubble Space Telescope WFC3/IR medium-band photometry of the compact elliptical galaxy M32, chemically resolving its thermally pulsating asymptotic giant branch star…
SPITZER SAGE Observations of Large Magellanic Cloud Planetary Nebulae
J. L. Hora, M. Cohen, R. G. Ellis +14
We present IRAC and MIPS images and photometry of a sample of previously known planetary nebulae (PNe) from the SAGE survey of the Large Magellanic Cloud (LMC) performed with the S…
Ice chemistry in massive Young Stellar Objects: the role of metallicity
J. M. Oliveira, J. Th. van Loon, G. C. Sloan +6
We present the comparison of the three most important ice constituents (water, CO and CO2) in the envelopes of massive Young Stellar Objects (YSOs), in environments of different me…
Detection of a massive dust shell around the Type II supernova SN 2002hh
M. J. Barlow, B. E. K. Sugerman, J. Fabbri +11
Dust emission from the Type II supernova SN 2002hh in NGC 6946 has been detected at mid-infrared wavelengths by the Spitzer Space Telescope from 590 to 758 days after outburst and…
Mid-Infrared Imaging of Young Stellar Objects
Michael C. Liu, James R. Graham, A. M. Ghez +6
We present arcsecond resolution mid-infrared (8--13 m) images and photometry of four young stellar objects (YSOs)~--- L1551-IRS5, HL~Tau, AS~205, and AS~209 (V1121~Oph)~--- tak…
MICONIC: The spatial relationship between star formation and the AGN in Centaurus A revealed by JWST/MIRI
O. C. Jones, M. L. Jones, D. Dicken +21
Centaurus A (Cen A), the nearest active radio galaxy, hosts a warped dust disc formed in a gas-rich merger. We present JWST/MIRI imaging in three filters, F560W, F770W, and F1130W,…
The Interstellar Medium in I Zw 18 seen with JWST/MIRI: II. Warm Molecular Hydrogen and Warm Dust
L. K. Hunt, B. T. Draine, M. G. Navarro +16
We present JWST/MIRI spectra from the Medium-Resolution Spectrometer of IZw18, a nearby dwarf galaxy with a metallicity of % Solar. Here, we investigate warm molecular hydr…
Spitzer SAGE-SMC Infrared Photometry of Massive Stars in the Small Magellanic Cloud
A. Z. Bonanos, D. J. Lennon, F. Köhlinger +18
We present a catalog of 5324 massive stars in the Small Magellanic Cloud (SMC), with accurate spectral types compiled from the literature, and a photometric catalog for a subset of…
The SAGE-Spec Spitzer Legacy program: The life-cycle of dust and gas in the Large Magellanic Cloud
F. Kemper, Paul M. Woods, V. Antoniou +53
The SAGE-Spec Spitzer Legacy program is a spectroscopic follow-up to the SAGE-LMC photometric survey of the Large Magellanic Cloud carried out with the Spitzer Space Telescope. We…
The location, clustering, and propagation of massive star formation in giant molecular clouds
B. B. Ochsendorf, M. Meixner, J. Chastenet +2
Massive stars are key players in the evolution of galaxies, yet their formation pathway remains unclear. In this work, we use data from several galaxy-wide surveys to build an unbi…
Evidence of grain growth in the disk of the bipolar proto-planetary nebula M 1--92
K. Murakawa, T. Ueta, M. Meixner
We investigate the dust size and dust shell structure of the bipolar proto-planetary nebula M 1--92 by means of radiative transfer modeling. Our models consists of a disk and bipol…
Dust Emission from Evolved and Unevolved HII Regions in the Large Magellanic Cloud
C. T. Slater, M. S. Oey, A. Li +8
We present a study of the dust properties of 12 classical and superbubble HII regions in the Large Magellanic Cloud. We use infrared photometry from Spitzer (8, 24, 70, and 160 \mu…
Statistical study of dust properties in LMC molecular clouds
D. Paradis, W. T. Reach, J. P. Bernard +6
The objective of this paper is to construct a catalog providing the dust properties and the star formation efficiency (SFE) of the molecular clouds in the Large Magellanic Cloud (L…
Spitzer SAGE survey of the Large Magellanic Cloud II: Evolved Stars and Infrared Color Magnitude Diagrams
R. D. Blum, J. R. Mould, K. A. Olsen +47
Color-magnitude diagrams (CMDs) are presented for the Spitzer SAGE (Surveying the Agents of a Galaxy's Evolution) survey of the Large Magellanic Cloud (LMC). IRAC and MIPS 24 um ep…
PRIMA General Observer Science Book
A. Moullet, T. Kataria, D. Lis +6
PRIMA (The PRobe for-Infrared Mission for Astrophysics) is a concept for a far-infrared (IR) observatory. PRIMA features a cryogenically cooled 1.8 m diameter telescope and is desi…
ALMA reveals molecular cloud N55 in the Large Magellanic Cloud as a site of massive star formation
N Naslim, K. Tokuda, T. Onishi +11
We present the molecular cloud properties of N55 in the Large Magellanic Cloud using CO(1-0) and CO(1-0) observations obtained with Atacama Large Millimeter Array. We…
Origins Space Telescope: From First Light to Life -- ESA Voyage 2050 White Paper
M. C. Wiedner, S. Aalto, J. Birkby +24
The Origins Space Telescope (Origins) is one of four science and technology definition studies selected by National Aeronautics and Space Administration (NASA) in preparation of th…
HST Snapshot Survey of Post-AGB Objects
N. Siodmiak, M. Meixner, T. Ueta +3
The results from a Hubble Space Telescope (HST) snapshot survey of post-AGB objects are shown. The aim of the survey is to complement existing HST images of PPN and to connect vari…
The effects of dust on the optical and infrared evolution of SN 2004et
J. Fabbri, M. Otsuka, M. J. Barlow +8
We present an analysis of multi-epoch observations of the Type II-P supernova SN 2004et. New and archival optical spectra of SN 2004et are used to study the evolution of the Halpha…
The Far-Infrared Surveyor Mission Study: Paper I, the Genesis
M. Meixner, A. Cooray, R. Carter +27
This paper describes the beginning of the Far-Infrared Surveyor mission study for NASA's Astrophysics Decadal 2020. We describe the scope of the study, and the open process approac…
Properties of Proto--Planetary Nebulae
M. Meixner
This review describes some general properites of proto-planetary nebulae with particular emphasis on the recent work of morpholgical studies. The weight of observational evidence s…
JWST MIRI Imager Observations of Supernova SN 1987A
P. Bouchet, R. Gastaud, A. Coulais +31
There exist very few mid-infrared (IR) observations of supernovae (SNe) in general. Therefore, SN 1987A, the closest visible SN in 400 years, gives us the opportunity to explore th…
Near-infrared spectroscopy of embedded protostars in the massive metal-poor star-forming region NGC 346
O. C. Jones, M. Reiter, R. Sanchez-Janssen +4
We present medium-resolution (R 4000) YJ, H \& K band spectroscopy of candidate young stellar objects (YSOs) in NGC~346, the most active star-formation region in the metal-p…
CO J = 2 - 1 Emission from Evolved Stars in the Galactic Bulge
Benjamin A. Sargent, N. A. Patel, M. Meixner +3
We observe a sample of 8 evolved stars in the Galactic Bulge in the CO J = 2 - 1 line using the Submillimeter Array (SMA) with angular resolution of 1 - 4 arcseconds. These stars h…
A stubbornly large mass of cold dust in the ejecta of Supernova 1987A
M. Matsuura, E. Dwek, M. J. Barlow +33
We present new Herschel photometric and spectroscopic observations of Supernova 1987A, carried out in 2012. Our dedicated photometric measurements provide new 70 micron data and im…
The Dust Properties of Two Hot R Coronae Borealis Stars and a Wolf-Rayet Central Star of a Planetary Nebula: in Search of a Possible Link
Geoffrey C. Clayton, O. De Marco, B. A. Whitney +14
We present new Spitzer/IRS spectra of two hot R Coronae Borealis (RCB) stars, one in the Galaxy,V348 Sgr, and one lying in the LMC, HV 2671. These two objects may constitute a link…
SMC in space and time: a project to study the evolution of the prototype interacting late-type dwarf galaxy
M. Tosi, J. Gallagher, E. Sabbi +13
We introduce the SMC in space and time, a large coordinated space and ground-based program to study star formation processes and history, as well as variable stars, structure, kine…
Absolute Flux Calibration of the IRAC Instrument on the Spitzer Space Telescope using Hubble Space Telescope Flux Standards
R. C. Bohlin, K. D. Gordon, G. H. Rieke +11
The absolute flux calibration of the James Webb Space Telescope will be based on a set of stars observed by the Hubble and Spitzer Space Telescopes. In order to cross-calibrate the…
SAGE-Var: An Infrared Survey of Variability in the Magellanic Clouds
D. Riebel, M. L. Boyer, S. Srinivasan +9
We present the first results from the SAGE-Var program, a follow on to the Spitzer legacy program Surveying the Agents of Galaxy Evolution (SAGE; Meixner, et al. 2006). We obtained…
A spatially resolved study of photoelectric heating and [CII] cooling in the LMC
D. Rubin, S. Hony, S. C. Madden +20
(abridged) We study photoelectric heating throughout the Large Magellanic Cloud. We quantify the importance of the [CII] cooling line and the photoelectric heating process of vario…
Physical Properties of Giant Molecular Clouds in the Large Magellanic Cloud
A. Hughes, T. Wong, J. Ott +14
The Magellanic Mopra Assessment (MAGMA) is a high angular resolution CO mapping survey of giant molecular clouds (GMCs) in the Large and Small Magellanic Clouds using the Mopra Tel…
Variable Evolved Stars and YSOs Discovered in the Large Magellanic Cloud using the SAGE Survey
Uma P. Vijh, M. Meixner, B. Babler +13
We present initial results and source lists of variable sources in the Large Magellanic Cloud (LMC) for which we detect thermal infrared variability from the SAGE (Surveying the Ag…
Infrared variable stars in the compact elliptical galaxy M32
O. C. Jones, C. Nally, M. J. Sharp +7
Variable stars in the compact elliptical galaxy M32 are identified, using three epochs of photometry from the Spitzer Space Telescope at 3.6 and 4.5 m, separated by 32 to 381 d…
SN 2007od: A Type IIP SN with Circumstellar Interaction
J. E. Andrews, J. S. Gallagher, Geoffrey C. Clayton +9
SN 2007od exhibits characteristics that have rarely been seen in a Type IIP supernova (SN). Optical V band photometry reveals a very steep brightness decline between the plateau an…
The Magellanic Quasars Survey. III. Spectroscopic Confirmation of 758 AGNs Behind the Magellanic Clouds
Szymon Kozlowski, Christopher A. Onken, Christopher S. Kochanek +12
The Magellanic Quasars Survey (MQS) has now increased the number of quasars known behind the Magellanic Clouds by almost an order of magnitude. All survey fields in the Large Magel…
The Molecular and Dust Envelope of HD 56126
M. Meixner, A. Zalucha, T. Ueta +2
We present millimeter interferometry images of the CO J=1-0 line emission arising in the circumstellar envelope of HD 56126 (a.k.a. IRAS 07134+1005), which is one of the best studi…
An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS), II. Discovery of Metal-poor Dusty AGB Stars
Martha L. Boyer, K. B. W. McQuinn, P. Barmby +14
The DUSTiNGS survey (DUST in Nearby Galaxies with Spitzer) is a 3.6 and 4.5 micron imaging survey of 50 nearby dwarf galaxies designed to identify dust-producing Asymptotic Giant B…
Early-stage young stellar objects in the Small Magellanic Cloud
J. M. Oliveira, J. Th. van Loon, G. C. Sloan +12
We present new observations of 34 YSO candidates in the SMC. The anchor of the analysis is a set of Spitzer-IRS spectra, supplemented by groundbased 3-5 micron spectra, Spitzer and…
Determining dust temperatures and masses in the Herschel era: the importance of observations longward of 200 micron
K. D. Gordon, F. Galliano, S. Hony +21
The properties of the dust grains (e.g., temperature and mass) can be derived from fitting far-IR SEDs (>100 micron). Only with SPIRE on Herschel has it been possible to get high s…
Past and present star formation in the SMC: NGC 346 and its neighborhood
E. Sabbi, M. Sirianni, A. Nota +8
In the quest of understanding how star formation occurs and propagates in the low metallicity environment of the Small Magellanic Cloud (SMC), we acquired deep F555W (~V), and F814…