Outputs (15)

An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS). IV. Discovery of High-redshift AGB Analogs (2017)
Journal Article
Van Loon. (2017). An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS). IV. Discovery of High-redshift AGB Analogs. Astrophysical Journal, https://doi.org/10.3847/1538-4357/aa9892

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 form even in very metal-poor systems (${\boldsymbol{Z}}\sim 0.008\,{Z}_{... Read More about An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS). IV. Discovery of High-redshift AGB Analogs.

The VMC Survey. XXVII. Young Stellar Structures in the LMC’s Bar Star-forming Complex (2017)
Journal Article
Van Loon, J., & Oliveira, J. (2017). The VMC Survey. XXVII. Young Stellar Structures in the LMC’s Bar Star-forming Complex. Astrophysical Journal, 149 -149. https://doi.org/10.3847/1538-4357/aa911e

Star formation is a hierarchical process, forming young stellar structures of star clusters, associations, and complexes over a wide range of scales. The star-forming complex in the bar region of the Large Magellanic Cloud is investigated with upper... Read More about The VMC Survey. XXVII. Young Stellar Structures in the LMC’s Bar Star-forming Complex.

The ESO Diffuse Interstellar Bands Large Exploration Survey (EDIBLES) - I. Project description, survey sample, and quality assessment (2017)
Journal Article
Van Loon. (2017). The ESO Diffuse Interstellar Bands Large Exploration Survey (EDIBLES) - I. Project description, survey sample, and quality assessment. Astronomy & Astrophysics, A76 -A76. https://doi.org/10.1051/0004-6361/201730912

The carriers of the diffuse interstellar bands (DIBs) are largely unidentified molecules ubiquitously present in the interstellar medium (ISM). After decades of study, two strong and possibly three weak near-infrared DIBs have recently been attribute... Read More about The ESO Diffuse Interstellar Bands Large Exploration Survey (EDIBLES) - I. Project description, survey sample, and quality assessment.

The VMC survey – XXV. The 3D structure of the Small Magellanic Cloud from Classical Cepheids (2017)
Journal Article
Ripepi, V., Cioni, M. L., Ida Moretti, M., Marconi, M., Bekki, K., Clementini, G., …Van Loon, J. T. (2017). The VMC survey – XXV. The 3D structure of the Small Magellanic Cloud from Classical Cepheids. Monthly Notices of the Royal Astronomical Society, 472(1), 808 -827. https://doi.org/10.1093/mnras/stx2096

The VISTA near-infrared YJKs survey of the Magellanic System (VMC) is collecting deep Ks-band time-series photometry of pulsating stars hosted by the two Magellanic Clouds and their connecting bridge. Here, we present Y, J, Ks light curves for a samp... Read More about The VMC survey – XXV. The 3D structure of the Small Magellanic Cloud from Classical Cepheids.

ALMA spectral survey of Supernova 1987A-molecular inventory, chemistry, dynamics and explosive nucleosynthesis (2017)
Journal Article
Van Loon. (2017). ALMA spectral survey of Supernova 1987A-molecular inventory, chemistry, dynamics and explosive nucleosynthesis. Monthly Notices of the Royal Astronomical Society, 3347 -3362. https://doi.org/10.1093/mnras/stx830

We report the first molecular line survey of Supernova 1987A in the millimetre wavelength range. In the Atacama Large Millimeter/submillimeter Array (ALMA) 210–300 and 340–360 GHz spectra, we detected cold (20–170 K) CO, 28SiO, HCO+ and SO, with weak... Read More about ALMA spectral survey of Supernova 1987A-molecular inventory, chemistry, dynamics and explosive nucleosynthesis.

Star formation histories in NGC 147 and NGC 185 (2017)
Journal Article
Van Loon. (2017). Star formation histories in NGC 147 and NGC 185. Journal of Physics: Conference Series, https://doi.org/10.1088/1742-6596/869/1/012087

NGC 147 and NGC 185 are two of the most massive satellites of the Andromeda galaxy (M 31). With similar mass and morphological type dE, they possess different amounts of interstellar gas and tidal distortion. The question therefore is, how do their h... Read More about Star formation histories in NGC 147 and NGC 185.

Very Deep inside the SN 1987A Core Ejecta: Molecular Structures Seen in 3D (2017)
Journal Article
Abellán, F. J., Indebetouw, R., Marcaide, J. M., Gabler, M., Fransson, C., Spyromilio, J., …Woosley, S. E. (in press). Very Deep inside the SN 1987A Core Ejecta: Molecular Structures Seen in 3D. Astrophysical Journal Letters, 842(2), L24. https://doi.org/10.3847/2041-8213/aa784c

Most massive stars end their lives in core-collapse supernova explosions and enrich the interstellar medium with explosively nucleosynthesized elements. Following core collapse, the explosion is subject to instabilities as the shock propagates outwar... Read More about Very Deep inside the SN 1987A Core Ejecta: Molecular Structures Seen in 3D.

The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud (2017)
Journal Article
Van Loon. (2017). The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud. Monthly Notices of the Royal Astronomical Society, 2980 - 2995. https://doi.org/10.1093/mnras/stx205

We study the luminosity function of intermediate-age red clump stars using deep, near-infrared photometric data covering ~20 deg2 located throughout the central part of the Small Magellanic Cloud (SMC), comprising the main body and the galaxy's easte... Read More about The VMC Survey - XXIV. Signatures of tidally stripped stellar populations from the inner Small Magellanic Cloud.

Monitoring survey of pulsating giant stars in the Local Group galaxies: survey description, science goals, target selection (2017)
Journal Article
Van Loon. (2017). Monitoring survey of pulsating giant stars in the Local Group galaxies: survey description, science goals, target selection. Journal of Physics: Conference Series, https://doi.org/10.1088/1742-6596/869/1/012068

The population of nearby dwarf galaxies in the Local Group constitutes a complete galactic environment, perfect suited for studying the connection between stellar populations and galaxy evolution. In this study, we are conducting an optical monitorin... Read More about Monitoring survey of pulsating giant stars in the Local Group galaxies: survey description, science goals, target selection.

Monitoring pulsating giant stars in M33: star formation history and chemical enrichment (2017)
Journal Article
Van Loon. (2017). Monitoring pulsating giant stars in M33: star formation history and chemical enrichment. Journal of Physics: Conference Series, https://doi.org/10.1088/1742-6596/869/1/012062

We have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope (UKIRT), of the Local Group spiral galaxy M33 (Triangulum). A new method has been developed by us to use pulsating giant stars to reconstruct the star formation histor... Read More about Monitoring pulsating giant stars in M33: star formation history and chemical enrichment.

The SAGE-Spec Spitzer Legacy program: the life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification - III (2017)
Journal Article
Jones, O., Woods, P., Kemper, F., Kraemer, K., Sloan, G., Srinivasan, S., …Volk, K. (2017). The SAGE-Spec Spitzer Legacy program: the life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification - III. Monthly Notices of the Royal Astronomical Society, 470(3), 3250 -3282. https://doi.org/10.1093/mnras/stx1101

The Infrared Spectrograph (IRS) on the Spitzer Space Telescope observed nearly 800 point sources in the Large Magellanic Cloud (LMC), taking over 1000 spectra. 197 of these targets were observed as part of the SAGE-Spec Spitzer Legacy program; the re... Read More about The SAGE-Spec Spitzer Legacy program: the life-cycle of dust and gas in the Large Magellanic Cloud. Point source classification - III.

Properties of CO$_2$ clathrate hydrates formed in the presence of MgSO$_4$ solutions with implications for icy moons (2017)
Journal Article
Safi, E., Thompson, S., Evans, A., Day, S., Murray, C., Parker, J., …Van Loon, J. T. (2017). Properties of CO$_2$ clathrate hydrates formed in the presence of MgSO$_4$ solutions with implications for icy moons. Astronomy & Astrophysics, 600(A88), https://doi.org/10.1051/0004-6361/201629791

There is evidence to suggest that clathrate hydrates have a significant effect on the surface geology of icy bodies in the Solar System. However the aqueous environments believed to be present on these bodies are likely to be saline rather than pure... Read More about Properties of CO$_2$ clathrate hydrates formed in the presence of MgSO$_4$ solutions with implications for icy moons.

The VLT-FLAMES Tarantula Survey: XXV. Surface nitrogen abundances of O-type giants and supergiants⋆⋆⋆ (2017)
Journal Article
Grin, N. J., Ramírez-Agudelo, O. H., de Koter, A., Sana, H., Puls, J., Brott, I., …Walborn, N. R. (2017). The VLT-FLAMES Tarantula Survey: XXV. Surface nitrogen abundances of O-type giants and supergiants⋆⋆⋆. Astronomy & Astrophysics, 600, Article A82. https://doi.org/10.1051/0004-6361/201629225

Context. Theoretically, rotation-induced chemical mixing in massive stars has far reaching evolutionary consequences, affecting the sequence of morphological phases, lifetimes, nucleosynthesis, and supernova characteristics. Aims. Using a sample o... Read More about The VLT-FLAMES Tarantula Survey: XXV. Surface nitrogen abundances of O-type giants and supergiants⋆⋆⋆.

ALMA observations of Molecules in Supernova 1987A (2017)
Journal Article
Matsuura, M., Indebetouw, R., Woosley, S., Bujarrabal, V., Abellán, F. J., McCray, R., …Yates, J. (2017). ALMA observations of Molecules in Supernova 1987A. Proceedings of the International Astronomical Union, 12(S331), 294-299. https://doi.org/10.1017/s1743921317004719

Supernova (SN) 1987A has provided a unique opportunity to study how SN ejecta evolve in 30 years time scale. We report our ALMA spectral observations of SN 1987A, taken in 2014, 2015 and 2016, with detections of CO, 28SiO, HCO+ and SO, with weaker li... Read More about ALMA observations of Molecules in Supernova 1987A.

DUSTiNGS III: Distribution of Intermediate-Age and Old Stellar Populations in Disks and Outer Extremities of Dwarf Galaxies (2017)
Journal Article
Van Loon. (2017). DUSTiNGS III: Distribution of Intermediate-Age and Old Stellar Populations in Disks and Outer Extremities of Dwarf Galaxies. Astrophysical Journal, https://doi.org/10.3847/1538-4357/834/1/78

We have traced the spatial distributions of intermediate-age and old stars in nine dwarf galaxies in the distant parts of the Local Group, using multi-epoch 3.6 and 4.5 µm data from the DUST in Nearby Galaxies with Spitzer (DUSTiNGS) survey. Using co... Read More about DUSTiNGS III: Distribution of Intermediate-Age and Old Stellar Populations in Disks and Outer Extremities of Dwarf Galaxies.