Search Results - "Bjorkman, K. S."
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The Role of Evolutionary Age and Metallicity in the Formation of Classical Be Circumstellar Disks. I. New Candidate Be Stars in the LMC, SMC, and Milky Way
Published in The Astrophysical journal (20-11-2006)“…We present B, V, R, and Ha photometry of eight clusters in the Small Magellanic Cloud, five in the Large Magellanic Cloud, and three Galactic clusters and use…”
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The Role of Evolutionary Age and Metallicity in the Formation of Classical Be Circumstellar Disks. II. Assessing the Evolutionary Nature of Candidate Disk Systems
Published in The Astrophysical journal (20-12-2007)“…We present the first detailed imaging polarization observations of six SMC and six LMC clusters, known to have large populations of B-type stars that exhibit…”
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Toward Mapping the Detailed Density Structure of Classical Be Circumstellar Disks
Published in The Astrophysical journal (10-02-2007)“…The first results from a near-contemporaneous optical and infrared spectroscopic observing program designed to probe the detailed density structure of…”
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Toward Understanding the B[e] Phenomenon. II. New Galactic FS CMa Stars
Published in The Astrophysical journal (10-12-2007)“…FS CMa stars form a group of objects with the B[e] phenomenon that were previously known as unclassified B[e] stars or B[e] stars with warm dust (B[e]WD) until…”
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Dead or Alive? Long-term evolution of SN 2015bh (SNhunt275)
Published in Monthly notices of the Royal Astronomical Society (01-12-2016)“…Supernova (SN) 2015bh (or SNhunt275) was discovered in NGC 2770 on 2015 February with an absolute magnitude of Mr ~ -13.4 mag, and was initially classified as…”
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Constraints on the Geometry of Circumstellar Envelopes: Optical Interferometric and Spectropolarimetric Observations of Seven Be Stars
Published in The Astrophysical journal (10-04-1997)Get full text
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A Spectroscopic Orbit for the Late-type Be Star β CMi
Published in The Astrophysical journal (10-02-2017)“…The late-type Be star β CMi is remarkably stable compared to other Be stars that have been studied. This has led to a realistic model of the outflowing Be disk…”
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Binary Nature and Long‐Term Variations of γ Cassiopeiae
Published in Publications of the Astronomical Society of the Pacific (01-11-2002)“…We present the results of high‐resolution spectroscopic observations of the bright Be star γ Cas obtained at the Ritter Observatory of the University of Toledo…”
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Evolution of the Inner Circumstellar Envelope of V838 Monocerotis
Published in The Astrophysical journal (20-11-2003)Get full text
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MWC 930 — a new luminous blue variable candidate
Published in Monthly notices of the Royal Astronomical Society (01-11-2005)“…We present the results of optical high-resolution and near-infrared low-resolution spectroscopy and multicolour optical and near-infrared photometry of the…”
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CHARA Array K'-Band Measurements of the Angular Dimensions of Be Star Disks
Published in The Astrophysical journal (01-01-2007)“…We present the first K'-band, long-baseline interferometric observations of the northern Be stars g Cas, h Per, Tau, and Dra. The measurements were made with…”
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Properties of the δ Scorpii Circumstellar Disk from Continuum Modeling
Published in The Astrophysical journal (01-12-2006)Get full text
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Probing the Geometry and Circumstellar Environment of SN 1993J in M81
Published in Publications of the Astronomical Society of the Pacific (01-05-1997)“…We have monitored the polarized radiation of the Type IIb SN 1993J in M81 over a period of 41 days, starting from 7 days after the explosion on 1993 March 27.5…”
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Toward Understanding the B[e] Phenomenon. III. Properties of the Optical Counterpart of IRAS 00470+6429
Published in The Astrophysical journal (20-07-2009)Get full text
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Transient Infall Events in the Disk of AB Aurigae: The β Pictoris Phenomenon at 2-4 Megayears
Published in The Astrophysical journal (01-02-1999)Get full text
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A study of the B[e] star AS 160
Published in Astronomy letters (01-05-2003)“…We present the results of our study of the poorly known B[e] star AS 160=IRAS 07370-2438. The high-resolution spectrum obtained with the 6-m BTA telescope…”
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Deriving the Geometry of Be Star Circumstellar Envelopes from Continuum Spectropolarimetry. I. The Case of ζ Tauri
Published in The Astrophysical journal (10-03-1997)Get full text
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The First Ultraviolet and Optical Spectropolarimetry of the B[e] Star HD 50138
Published in The Astrophysical journal (20-12-1998)Get full text
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HR 4049: temporal variations in the structure of the circumstellar material
Published in Monthly notices of the Royal Astronomical Society (01-07-1999)“…We present ultraviolet (UV) and optical spectropolarimetry of the post-asymptotic giant branch star HR 4049 (= HD 89353). The polarization is time-variable in…”
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Solar system observations by the Wisconsin Ultraviolet Photopolarimeter Experiment — III. The first ultraviolet linear spectropolarimetry of the Moon
Published in Monthly notices of the Royal Astronomical Society (21-07-1998)“…Portions of the Moon were observed by the Wisconsin Ultraviolet Photopolarimeter Experiment (WUPPE) on 1995 March 12, 14 and 17, and represent the first…”
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