selected publications
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conference proceeding
- Betelgeuse: A Case Study of an Inhomogeneous Extended Atmosphere. 152-161. 2008
- Chandra and GALEX Observations of Stellar Activity on the 7 Gyr Old Arcturus Moving Group Dwarfs. AIP Conference Proceedings. 908-+. 2008
- UV, IR, and mm Studies of CO Surrounding the Red Supergiant alpha Orionis (M2 Iab). AIP Conference Proceedings. 868-+. 2008
- FUSE spectroscopy of A and F supergiants. Astronomical Society of the Pacific Conference Series. 165-+. 2004
- Fuse spectroscopy of cool stars. Esa Sp. 51-58. 2004
- Extended atmospheres of the M supergiants alpha Ori and alpha Sco. Symposium- International Astronomical Union. 646-650. 2003
- The giant star CaII ionization problem: Mass loss revisited. Symposium- International Astronomical Union. 651-655. 2003
- Winds of evolved late-type stars studied with the HST. 368-376. 1999
- Is the extended red emission due to CO?. 231-234. 1998
- Semi-empirical wind models for lambda Velorum (K4 Ib-II). 87-93. 1996
- HST GHRS observations of the Herbig Ae star HD104237: First UV observations of a hot disk wind from a pre-main sequence star. 448-452. 1996
- HST and IUE observations of stellar mass-loss from K and early M evolved stars. 131-138. 1995
- Geometry, and the interpretation of chromospheric spectra. 414-416. 1993
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journal article
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SOFIA-EXES Observations of Betelgeuse during the Great Dimming of 2019/2020.
Astrophysical Journal Letters.
2020
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The close circumstellar environment of Betelgeuse V. Rotation velocity and molecular envelope properties from ALMA.
Astronomy and Astrophysics.
2018
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An Updated 2017 Astrometric Solution for Betelgeuse.
Astronomical Journal.
2017
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The Secret Lives of Cepheids: delta Cep-The Prototype of a New Class of Pulsating X-Ray Variable Stars.
Astrophysical Journal.
2017
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SOFIA-EXES Mid-IR Observations of [Fe II] Emission from the Extended Atmosphere of Betelgeuse.
Astrophysical Journal.
2017
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HUBBLE SPACE TELESCOPE CONSTRAINTS ON THE WINDS AND ASTROSPHERES OF RED GIANT STARS.
Astrophysical Journal.
2016
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SOFIA/EXES OBSERVATIONS OF WATER ABSORPTION IN THE PROTOSTAR AFGL 2591 AT HIGH SPECTRAL RESOLUTION.
Astrophysical Journal Letters.
2015
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SERENDIPITOUS DISCOVERY OF A DWARF NOVA IN THE KEPLER FIELD NEAR THE G DWARF KIC 5438845.
Astronomical Journal.
2015
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AN HST COS "SNAPSHOT" SPECTRUM OF THE K SUPERGIANT lambda Vel (K4Ib-II)*.
Astrophysical Journal.
2014
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MULTI-WAVELENGTH RADIO CONTINUUM EMISSION STUDIES OF DUST-FREE RED GIANTS.
Astronomical Journal.
2013
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Chromospheric thermal continuum millimetre emission from non-dusty K and M red giants.
Monthly Notices of the Royal Astronomical Society.
2064-2073.
2013
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CARMA CO(J=2-1) OBSERVATIONS OF THE CIRCUMSTELLAR ENVELOPE OF BETELGEUSE.
Astronomical Journal.
2012
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THE FAR-ULTRAVIOLET "CONTINUUM" IN PROTOPLANETARY DISK SYSTEMS. II. CARBON MONOXIDE FOURTH POSITIVE EMISSION AND ABSORPTION.
Astrophysical Journal.
2011
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TEXES OBSERVATIONS OF M SUPERGIANTS: DYNAMICS AND THERMODYNAMICS OF WIND ACCELERATION.
Astrophysical Journal.
1464-1483.
2009
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MgI emission lines at 12 and 18 mu m in K giants.
Astronomy and Astrophysics.
985-993.
2008
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A new VLA-Hipparcos distance to Betelgeuse and its implications.
Astronomical Journal.
1430-1440.
2008
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alpha TrA Junior.
Astrophysical Journal.
L107-L110.
2007
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The wind-ISM interaction of alpha Tauri.
Astrophysical Journal.
946-957.
2007
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The coronae of gamma Draconis.
Astrophysical Journal.
1126-1129.
2006
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From radio to X-ray: The quiescent atmosphere of the dMe flare star EV Lacertae.
Astrophysical Journal.
1349-1374.
2006
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Electron density and turbulence gradients within the extended atmosphere of the M supergiant betelgeuse (alpha orionis).
Astrophysical Journal.
1179-1202.
2006
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Water vapor on supergiants: The 12 mu m texes spectra of mu Cephei.
Astrophysical Journal.
652-658.
2006
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The remarkable far-ultraviolet spectrum of FK Comae Berenices: King of spin.
Astrophysical Journal.
464-474.
2006
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Water vapor on Betelgeuse as revealed by TEXES high-resolution 12 mu m spectra.
Astrophysical Journal.
1040-1055.
2006
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Chandra observations of coronal emission from the early G supergiants alpha and beta Aquarii.
Astrophysical Journal.
L53-L56.
2005
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Vla observations of zeta Aurigae: Confirmation of the slow acceleration wind density structure.
Astronomical Journal.
1018-1034.
2005
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Buried alive in the coronal graveyard.
Astrophysical Journal.
610-625.
2003
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Far-ultraviolet emissions of the Sun in time: Probing solar magnetic activity and effects on evolution of paleoplanetary atmospheres.
Astrophysical Journal.
561-572.
2003
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Space telescope imaging spectrograph survey of far-ultraviolet coronal forbidden lines in late-type stars.
Astrophysical Journal.
963-984.
2003
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The far-ultraviolet spectrum of T Tauri between 912 and 1185 angstrom.
Astronomical Journal.
1077-1081.
2002
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What can HST-GHRS FeII observations of alpha Orionis (M2 lab) tell us about short-period heating?.
Astronomy and Astrophysics.
154-157.
2001
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A spatially resolved, semiempirical model for the extended atmosphere of alpha Orionis (M2 IAB).
Astrophysical Journal.
1073-1098.
2001
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Identification of FeII emission lines in FUSE stellar spectra.
Astrophysical Journal.
486-494.
2001
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GHRS observations of cool, low-gravity stars. V. The outer atmosphere and wind of the nearby K supergiant lambda Velorum.
Astrophysical Journal.
382-406.
1999
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Lines of O IV and S IV in the Goddard High-Resolution Spectrograph spectrum of RR Tel: constraints on atomic data.
Monthly Notices of the Royal Astronomical Society.
L41-L46.
1999
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Digging deeper in the coronal graveyard.
Astrophysical Journal.
876-884.
1997
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The masses and radii of the eclipsing binary zeta Aurigae.
Astrophysical Journal.
454-479.
1996
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The wind outflow of zeta Aurigae: A model revision using Hubble Space Telescope spectra.
Astrophysical Journal.
979-997.
1996
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Goddard high-resolution spectrograph observations of procyon and HR 1099.
Astrophysical Journal.
761-782.
1996
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THE RIASS CORONATHON - JOINT X-RAY AND ULTRAVIOLET OBSERVATIONS OF NORMAL F-K STARS.
Astrophysical Journal Supplement.
223-259.
1995
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SI-II EMISSION-LINE DIAGNOSTICS.
Monthly Notices of the Royal Astronomical Society.
123-128.
1991
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SOFIA-EXES Observations of Betelgeuse during the Great Dimming of 2019/2020.
Astrophysical Journal Letters.
2020