Journal ArticleDOI
2 - 14 μm stellar spectrophotometry ii. stars from the 2 μm infrared sky survey.
K. M. Merrill,W. A. Stein +1 more
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TLDR
In this paper, a large number of 2 m Sky Suwey objects were used for infrared photometry and spectrophotometry with resolution 4A -0.015 over the wavelength range 2.Abstract:
Broad-band infrared photometry and spectrophotometry with resolution 4A --0.015 over the wavelength range 2- is presented for a large number of 2 m Sky Suwey objects. All of these sources within the present sample except IRC +40091 (Lk Ha 101) are shown to have characteristics similar to stars of the conventional spectral sequence or perhaps a slight extension to cooler surface temperature. A progression of increasing optical depth of circumstellar dust surrounding the stars is demonstrated. No evidence for a cool stellar photosphere is observed for IRC +40091. Key words: infrared objects - infrared spectrophotometry - circumstellar dustread more
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Journal ArticleDOI
Classification and Identification of IRAS Sources with Low-Resolution Spectra
TL;DR: In this paper, low-resolution spectra were extracted for 11,224 IRAS sources and classified into astrophysical classes, based on the presence of emission and absorption features and on the shape of the continuum.
Journal ArticleDOI
Red supergiants as potential Type IIn supernova progenitors: Spatially Resolved 4.6 Mum CO Emission Around VY CMa and Betelgeuse
TL;DR: In this article, high-resolution 4.6 mu m CO spectra of the circumstellar environments of two RSGs that are potential supernova (SN) progenitors, Betelgeuse and VY Canis Majoris, were presented.
Journal ArticleDOI
The SAGE-Spec Spitzer Legacy programme: the life-cycle of dust and gas in the Large Magellanic Cloud - Point source classification I
Paul M. Woods,Joana M. Oliveira,Francisca Kemper,J. Th. van Loon,Benjamin A. Sargent,Mikako Matsuura,Ryszard Szczerba,Kevin Volk,Albert A. Zijlstra,Greg Sloan,Eric Lagadec,Eric Lagadec,Iain McDonald,Olivia Jones,Varoujan Gorjian,Kathleen E. Kraemer,Clio Gielen,Margaret Meixner,Robert Blum,Marta Sewilo,D. Riebel,Bernie Shiao,C.-H. R. Chen,Martha L. Boyer,Remy Indebetouw,Remy Indebetouw,Vallia Antoniou,J.-P. Bernard,Marvin L. Cohen,C. Dijkstra,Maud Galametz,Frédéric Galliano,Karl D. Gordon,J. Harris,Sacha Hony,Joseph L. Hora,A. Kawamura,Brandon Lawton,Jarron Leisenring,S. C. Madden,Massimo Marengo,Massimo Marengo,C. McGuire,A. J. Mulia,B. O’Halloran,K. Olsen,R. Paladini,D. Paradis,William T. Reach,D. Rubin,Karin Sandstrom,Karin Sandstrom,Igor Soszyński,Angela Speck,Sundar Srinivasan,Sundar Srinivasan,Alexander G. G. M. Tielens,E. van Aarle,S. D. Van Dyk,H. Van Winckel,Uma P. Vijh,B. Whitney,A. N. Wilkins +62 more
TL;DR: In this article, a decision-tree method of object classification based on infrared spectral features, continuum and spectral energy distribution shape, bolometric luminosity, cluster membership and variability information was used to classify the SAGE-Spec sample of point sources.
Journal ArticleDOI
Presolar SiC in chondrites: How variable and how many sources?
TL;DR: In this article, the carbon and silicon isotropic compositions of 246 anomalous SiC grains measured in low-position residues were reported, and residues were prepared from nine chondrites, namely, 6 unequilibrated ordinary chondites (UOCs), Qingzhen (EH3), Leoville (CV3), and Murchison (CM2).
Journal ArticleDOI
The SAGE-Spec Spitzer Legacy programme: the life-cycle of dust and gas in the Large Magellanic Cloud - Point source classification I: SAGE-Spec - Point source classification I
Paul M. Woods,Joana M. Oliveira,Francisca Kemper,J. Th. van Loon,B. A. Sargent,Mikako Matsuura,Ryszard Szczerba,Kevin Volk,Albert A. Zijlstra,Greg Sloan,Eric Lagadec,Iain McDonald,Olivia Jones,Varoujan Gorjian,Kathleen E. Kraemer,Clio Gielen,Margaret Meixner,Robert Blum,Marta Sewilo,D. Riebel,Bernie Shiao,C.-H. R. Chen,Martha L. Boyer,Remy Indebetouw,Vallia Antoniou,J.-P. Bernard,Martin Cohen,C. Dijkstra,Maud Galametz,Frédéric Galliano,Karl D. Gordon,J. Harris,S. Hony,Joseph L. Hora,Akiko Kawamura,Brandon Lawton,Jarron Leisenring,S. C. Madden,Massimo Marengo,C. McGuire,A. J. Mulia,B. O'Halloran,K. A. G. Olsen,R. Paladini,D. Paradis,William T. Reach,D. Rubin,Karin Sandstrom,Igor Soszyński,Angela Speck,Sundar Srinivasan,Alexander G. G. M. Tielens,E. van Aarle,S. D. Van Dyk,H. Van Winckel,Uma P. Vijh,B. A. Whitney,A. N. Wilkins +57 more
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