RECENTLY ACCEPTED PAPERS FROM DENVER UNIVERSITY ASTRONOMERS [080424]: ========================================================================= More citations can be found by author last name at NASA Astro Data System ------------------------------------------------------------------------- 2012 High cadence measurement of neutral sodium and potassium absorption during the 2009-2011 eclipse of epsilon Aurigae http://arxiv.org/abs/1206.6754 The Invisible Monster Has Two Faces: Observations of epsilon Aurigae with the Herschel Space Observatory http://arxiv.org/abs/1202.6643 Mourard, et al. 2012 Astron. Astrophys. - in press. 2011 Infrared Studies of Epsilon Aurigae in Eclipse http://adsabs.harvard.edu/abs/2011AJ....142..174S Spectral and photometric analysis of the eclipsing binary ? Aurigae prior to and during the 2009-2011 eclipse http://arxiv.org/abs/1105.0107 Polarimetry of Epsilon Aurigae from Mid Eclipse to Third Contact http://adsabs.harvard.edu/abs/2011SASS...30..103C 2010 Structure in the disc of epsilon Aurigae: Spectroscopic observations of neutral Potassium during eclipse ingress http://arxiv.org/abs/1003.3617 XMM-Newton Observations of the Enigmatic Long Period Eclipsing Binary Epsilon Aurigæ: Constraining the Physical Models http://adsabs.harvard.edu/abs/2010AJ....140..595W Taming the Invisible Monster: System Parameter Constraints for epsilon Aurigae from the Far-ultraviolet to the Mid-infrared http://arxiv.org/abs/1003.3694 The interface between the stellar wind and interstellar medium around R Cassiopeiae revealed by far-infrared imaging http://arxiv.org/abs/0911.4918 Infrared images of the transiting disk in the eps Aurigae system (Nature 464:870) http://arxiv.org/abs/1004.2464 2009 Epsilon Aurigae Eclipse 2009 - Ingress http://adsabs.harvard.edu/abs/2010SASS...29...13H Mass Loss History of the AGB Star, R Cas http://arxiv.org/abs/0905.0750 Preliminary Study of Red Supergiant Star Membership in OB Star Associations of the Milky Way http://adsabs.harvard.edu/abs/2009ASPC..418..459S 3-D Dynamics of Interactions between Stellar Winds and the Interstellar Medium as Seen by AKARI and Spitzer http://adsabs.harvard.edu/abs/2009ASPC..418..117U The Wilson-Bappu Effect - 50 Years Later http://adsabs.harvard.edu/abs/2009ASPC..412..251S The Circumstellar-Interstellar Boundary around Evolved Stars - Revealed http://adsabs.harvard.edu/abs/2009ASPC..412..197S The Biggest, Baddest, Coolest Stars (co-Editors.) http://adsabs.harvard.edu/abs/2009ASPC..412.....L Epsilon Aurigae, 2009: The Eclipse Begins - Observing Campaign Status http://adsabs.harvard.edu/abs/2009SASS...28..149S 2008 "Gearing Up for epsilon Aurigae's First Eclipse of the Millenium" http://mysite.du.edu/~rstencel/SAS_Hopkins2008.pdf J. Hopkins, L. Schanne, R.Stencel -- SAS Symposium 2008. "Adventures in Interferometry" http://mysite.du.edu/~rstencel/SAS_Mais2008.pdf D. Mais, B. Kloppenborg, R. Stencel -- SAS Symposium 2008. "Adventures in J and H Band Photometry of Evolved Stars" http://mysite.du.edu/~rstencel/MtEvans/BradleyStencelJHphotom.pdf A. Bradley and R.Stencel -- JAAVSO 2007AAS...21110608J http://adsabs.harvard.edu/abs/2007AAS...21110608J Jacoby, Suzanne H.; Fortson, L.; Hartman, M.; Lochner, J. C.; Price, A.; Raddick, M. J.; Stencel, R. E. "Citizen Science for the International Year of Astronomy 2007AAS...211.5716H http://adsabs.harvard.edu/abs/2007AAS...211.5716H Hart, Alexa H.; Jurgenson, C. A.; Creech-Eakman, M. J.; Thompson, R. R.; Stencel, R. E. "Observations of Broad Emission Lines in Wolf-Rayet Winds with Long-Baseline Interferometry 2007IAUS..240..202S http://adsabs.harvard.edu/abs/2007IAUS..240..202S Stencel, Robert E. "Evidence for a Precessing Disk in the Extreme Binary Aurigae 2007arXiv0706.0891H http://adsabs.harvard.edu/abs/2007arXiv0706.0891H Hopkins, Jeffrey L.; Stencel, Robert E. "Recent UBVJH Photometry of Epsilon Aurigae 2007SASS...26...37H http://adsabs.harvard.edu/abs/2007SASS...26...37H Hopkins, J. L.; Stencel, R. E. "Precision UBVJH Single Channel Photometry of Epsilon Aurigae 54-- 2007AAS...210.7504S http://adsabs.harvard.edu/abs/2007AAS...210.7504S Stencel, Robert E. "Spitzer Spectra of Epsilon Aurigae - As It Nears Eclipse in 2009 53-- 2007 arXiv e-print http://adsabs.harvard.edu/abs/2007arXiv0704.2762M Mais, D., Richards, D. and Stencel, R. "Three Years of Mira Variable CCD Photometry" 52-- 2007 AAS Seattle poster 93.01 Matson, R. and Stencel, R. "The Wilson-Bappu effect - Fifty years later" http://adsabs.harvard.edu/abs/2006AAS...209.9301M 51-- 2006 MNRAS.372L..63W Wareing, C. J.; Ueta, Toshiya; Stencel, R.E. et al. "Detached shells as tracers of asymptotic giant branch-interstellar medium bow shocks" 50-- 2006ApJ...648L..39U Ueta, T.; Speck, A. K.; Stencel, R. E., et al. "Detection of a Far-Infrared Bow Shock Nebula around R Hya" 49-- 2006IAUPragueSpecialSession2...2.83 Fienberg, R. T.; Stencel, R. E. "Educational Opportunities in Pro-Am Collaboration 48-- 2006IAUSymp240.112 [Prague] Stencel, R. E. "Evidence for a precessing disk in the extreme binary, epsilon Aurigae. 47-- 2006Soc.Astron.Sci.Symp...25...31M Mais, D. E.; Richards, D.; Stencel, R. E. "Three Years of Mira Photometry: What Has Been Learned? 46-- 2006Soc.Astron.Sci.Symp...25...25L Lucas, G. E.; Hopkins, J. L.; Stencel, R. E. "Long-Period Eclipsing Binary System Epsilon Aurigae Eclipse Campaign 45-- 2006Soc.Astron.Sci.Symp...25...13H Hopkins, J. L.; Stencel, R. E. "Single Channel UBV and JH Band Photometry of Epsilon Aurigae 44-- 2006 Org.Strategies in Astronomy VI [ed. A.Heck]..book..p.97 Stencel, R. "Challenges and Opportunities in Operating a High-Altitude Site 43-- 2005ASPC..343..280J Jurgenson, C.; Stencel, R. "SIFTIR: A Mid-IR Imaging Spectro-polarimeter 2006 Jan. AAS meeting, DC: 42- [68.11] Search for transiting planets in NGC 6791 with milli-magnitude V+R photometry. M. Dahl, R.E. Stencel (U.Denver), S. Howell (NOAO/WIYN) http://www.aas.org/publications/baas/v37n4/aas207/276.htm *Link to poster: http://womble2.phys.du.edu/gem/2006JanAASposter.pdf 41-[182.15] Spitzer/MIPS Infrared Imaging of the Extremely Extended Circumstellar Dust Shell of HD 161796. A. K. Speck (University of Missouri - Columbia), T. Ueta (NASA Ames Research Center), R. Stencel (University of Denver), MIRIAD Collaboration http://www.aas.org/publications/baas/v37n4/aas207/913.htm 40------------------------------------------------------------------------------ 2005JAVSO..33...48M Mais, D. E.; Stencel, R. E.; Richards, D. Monitoring of Mira Variable Stars http://www.aavso.org/publications/ejaavso/v33n1/48.pdf 39------------------------------------------------------------------------------ 2005AAS...20510705H Hopkins, J.; Stencel, R. E. Out-of Eclipse UBV Variations of epsilon Aurigae [F0Iap] http://www.aas.org/publications/baas/v36n5/aas205/433.htm 38------------------------------------------------------------------------------ 2005AAS...205.5406M Mais, D. E.; Stencel, R. E.; Richards, D. Automated photometry, period analysis and flare-up constraints for selected Mira Variable Stars http://www.aas.org/publications/baas/v36n5/aas205/304.htm 37------------------------------------------------------------------------------ 2005AAS...205.4914J Jurgenson, C. A.; Stencel, R. E.; Stout, J. Imaging Fourier Transform Spectro-polarimetry in the Infrared http://www.aas.org/publications/baas/v36n5/aas205/1402.htm 36------------------------------------------------------------------------------ 2004JAVSO..32....1C Chipps, K. A.; Stencel, R. E.; Mattei, J. A. Discrete Fourier Analysis of the Light Curve of S Persei http://www.aavso.org/publications/ejaavso/v32n1/1.pdf 35------------------------------------------------------------------------------ 2004Denver AAS...204.8502M Mais, D. E.; Stencel, R. E.; Richards, D. Mira Variable Stars: Spectroscopic and Photometric Monitoring of this broad class of Long Term Variable and Highly Evolved Stars. http://www.aas.org/publications/baas/v36n2/aas204/41.htm 34------------------------------------------------------------------------------ 2004Denver AAS...204.5702W Winter, B.; Howe, H. J.; Stencel, R. E. Nineteenth Century Origins of Denver Astronomy http://www.aas.org/publications/baas/v36n2/aas204/381.htm 33------------------------------------------------------------------------------ 2004Denver AAS...204.4502M McNabb, I. A.; Stencel, R. E. 2MASS and IRAS Discovery of Red Supergiant Stars in OB Star Associations http://www.aas.org/publications/baas/v36n2/aas204/469.htm 32------------------------------------------------------------------------------ 2004Denver AAS...204.3504M Mais, D. E.; Stencel, R. E. Amateur Spectroscopy: What is Achievable from the Backyard? http://www.aas.org/publications/baas/v36n2/aas204/26.htm 31------------------------------------------------------------------------------ 2004Denver AAS...204.1005J Jurgenson, C. A.; Stencel, R. E. Instrumentation Development for Mid-IR Imaging Spectro-polarimetry http://www.aas.org/publications/baas/v36n2/aas204/741.htm 30------------------------------------------------------------------------------ 2004Denver AAS...204.1002M Mellon, R. R.; Scheld, D. L.; Stencel, R. E. Progress Report on the Student Astronomy Lab telescope at the U of Denver http://www.aas.org/publications/baas/v36n2/aas204/384.htm 29------------------------------------------------------------------------------ 2004Denver AAS...204.0709M Mais, D. E.; Bhatia, A.; Stencel, R. E.; Richards, D. Precision Photometry of Long Period Variable Stars http://www.aas.org/publications/baas/v36n2/aas204/385.htm 28------------------------------------------------------------------------ * 2004AJ....127...17H Microvariability and Long-Term Variability of Four Blazars Howard, Emily S.; Webb, James R.; Pollock, Joseph T.; Stencel, Robert E. http://www.journals.uchicago.edu/AJ/journal/issues/v127n1/202555/202555.web.pdf 27------------------------------------------------------------------------ 2003AAS...202.1014S Stencel, R. E. Teaching a College Course on Light Pollution http://www.aas.org/publications/baas/v35n3/aas202/135.htm 26-------------------------------------------------- 2003SPIE.4837...51M Mellon, Russell R.; Scheld, Daniel L.; Stencel, Robert E. Afocal Mersenne telescope for teaching and research 25-------------------------------------------------------- 2003ApJ...582L..35J Jurgenson, C. A.; Stencel, R. E.; Theil, D. S.; Klebe, D. I.; Ueta, T. Mid-Infrared Imaging Polarimetry of NGC 7027 http://www.journals.uchicago.edu/ApJ/journal/issues/ApJL/v582n1/16680/16680.web.pdf 24--------------------------------------------------------------------- 2003IAUS..219E.124S Stencel, Robert; Ostrowski-Fukuda, Therese; Creech-Eakman, Michelle; Thompson, Robert Interferometric Study of Dust Formation: S Persei [M3IAE] 23------------------------------------------------------------------------------ 2002AAS...200.1512 Jurgenson, C. A.; Stencel, R. E.; Ueta, T. "Mid-IR Polarimetry of Axi-Symmetric Mass Loss in the Shaping of Planetary Nebula NGC 7027" http://www.journals.uchicago.edu/ApJ/journal/issues/ApJL/v582n1/16680/16680.web.pdf 22------------------------------------------------------------------------------ 2002AAS...200.4704 Rice, M.; Bisque, S. T. M. D.; Stencel, R. E. "Hosting the Student Telescope Network First Site" 21------------------------------------------------------------------------------ 2002AAS...200.4705S Stencel, R. E.; Harland, H. A.; Hannahoe, R.; Bisque, S.; Rice, M. "The Student Telescope Network (STN) Experiment" 20------------------------------------------------------------------------------ 2002AAS...200.4706B Bisque, S.; Rice, M.; Stencel, R. E. " Paramount Tracking and Pointing Accuracy Plus Browser Control: As Applied in the Student Telescope Network and Beyond" 19------------------------------------------------------------------------------ 2002AAS...200.7409C "SiO Maser emission in S Per, the movie" 2002AAS...200.7409O Ostrowski-Fukuda, T. A.; Stencel, R. E.; Kemball, A.; Diamond, P. J. -------------------- Papers for Cool Stars 12, July 2001: 18-- "Microflaring among Hipparcos variables" Stencel, Phillips and Ostrowski 17-- "TGIRS, a new mid IR spectrometer" Jurgenson and Stencel 16-- "Radio flaring discovered in brown dwarf" Berger et al. including Ostrowski 15-- AGES AND ABUNDANCES IN BETA PICTORIS STARS Edwards, M. and Stencel, R. 2001 Astrophysical Ages and Timescales conference (ASP proceedings in press) Abstract: Correlations among infrared excesses, ages and abundances for 66 field stars observed under the DU ISO Key Project are discussed. Details are part of M.Edward's thesis research at website dim.phys.du.edu. ------------------- 14-- AGB STAR POLAR BREAKOUT AND THE ORIGIN OF ASPHERICAL PLANETARY NEBULAE Stencel, Robert E. in Asymmetrical Planetary Nebulae II: From Origins to Microstructures, ASP Conference Series, Vol. 199. Edited by J.Kastner, N.Soker, S.Rappaport. ISBN: 1-58381-026-9, 2000, p. 99 Abstract The problem of the transition between presumed spherical configuration of AGB stars, and manifestly aspherical shapes of proto- planetary nebula, is addressed with an hypothesis that features selective removal of high latitude stellar layers near the end of AGB phase of evolution, during thermal pulses. As deeper, hotter layers of the atmosphere and envelope are exposed, an instability related to increasing radiative forces at the poles could be triggered, promoting a bipolar flow. (2000 ASP Conf. Ser. 199, p.99.) -------------------- 13-- MID-INFRARED VISIBILITY MEASUREMENTS OF EVOLVED STARS Sudol, J. J.; Dyck, H. M.; Stencel, R. E.; Klebe, D. I.; Creech-Eakman, M. J. 1999 Astronomical Journal, Volume 117, Issue 3, pp. 1609-1615. Abstract We have used Denver University's Ten-and-Twenty Micron Camera at the Wyoming Infrared Observatory to image 12 evolved stars at 11.5 mum. We have obtained both visibility data and photometric magnitudes from these images. We have partially resolved the circumstellar dust shell for eight of these 12 stars: alpha Ori, VY CMa, IRC +10216, chi Cyg, IK Tau, NML Cyg, mu Cep, and IRC +10420. We compare our data to published data and to visibility curves predicted by radiative transfer models in the literature. (1999AJ.117:1609.) ------------------- 12-- TNTCAM MARK II: FIRST LIGHT MID-IR IMAGING Stencel, R. E.; Theil, D.; Klebe, D. Bulletin of the American Astronomical Society, Meeting 195, #87.16 Abstract First light observations were achieved with our redesigned mid-infrared array camera, TNTCAM2 at NASA's Infrared Telescope Facility (IRTF) atop Mauna Kea on May 2-5, 1999. Collaborative observations were made of Jupiter, in support of a Galileo spacecraft encounter (Glenn Orton et al. JPL), Mars at opposition (Terry Martin, JPL), Nova Sgr (Robert Gehrz et al. U.Minnesota), plus YSOs, star forming regions and planetary nebulae, using intermediate and narrow band filters from 5 to 24 microns. TNTCAM2 (Ten and Twenty micron Camera, Mark II) represents an improvement over the original optical and cryostat design described by (Klebe et al., 1996, ASP Conf. Series, v97, p.79). Image quality and cryostat hold time objectives were met (see Theil et al. 1999 SPIE Proceedings, vol.3786C Conference on Optomechanical Engineering). The complete system will also include an upgrade from the current Rockwell HF16 128x128 Si:As array, and polarimetry across these mid-infrared filter regions as well, with sensitivities as small as 0.4% (at 6.0 mag/sq.arcsec on a 2.4m telescope in 4 hours). Frequent use of the instrument is planned as part of a cooperative access agreement with the University of Wyoming's Infrared Observatory (WIRO), and is offered for collaborative community access beginning in 2000. We are happy to acknowledge support via NSF grant AST-9724506. 1999 BAAS.195:8716. ------------------- 11-- Infrared Space Observatory Photometric Search of Main-Sequence Stars for Vega-Type Systems FAJARDO-ACOSTA, S. B.; STENCEL, R. E.; BACKMAN, D. E.; THAKUR, N. 1999 Astrophysical Journal.Vol.520.p.215F ABSTRACT: We obtained 3.620 micron photometry of 38 bright [IRAS F(12 micron) >0.7 Jy] main-sequence stars with the Infrared Space Observatory (ISO). Observations were conducted with the ISOPHOT instrument, in the single- pointing photometry mode, through filters at 3.6, 11.5, and 20.0 microns. We searched for excess (Vega-type) emission from dust at temperatures 100 K, located at 160 AU from the stars. We thus sampled dust at warm, terrestrial material temperatures and at cool (100 K) temperatures of possible Kuiper Belt type regions in these systems. We detected 20 micron excesses from 14% of our sources, but we did not detect 11.5 micron excesses from any of them. We present single-temperature blackbody models of the location and density of dust emission around 10 stars, two of them (29 Cyg and Gl 816) with excesses newly reported here. We make a thorough comparison of ISO and IRAS data on our target stars and propose a new calibration procedure for ISOPHOT staring measurements at 3.6, 11.5, and 20 microns. 10-- 1999Astronomical Journal Vol.117 p.1609S SUDOL, J. J.; DYCK, H. M.; STENCEL, R. E.; KLEBE, D. I.; CREECH-EAKMAN, M. J. Mid-Infrared Visibility Measurements of Evolved Stars 9-- 1998Society Photo-optical Instrumentation Engineers Vol.3354.p.853K KLEBE, DIMITRI I.; STENCEL, ROBERT E.; THEIL, DAVID S. TNTCAM MARK II: a new mid-IR array imager/polarimeter 8-- 1998Astrophysr.& Space Sci. Vol.255.p.91B BACKMAN, D. E.; FAJARDO-ACOSTA, S. B.; STENCEL, R. E.; STAUFFER, J. R. Dust Disks around Main Sequence Stars 7-- 1997ApJ.Vol.487 p.L151 FAJARDO-ACOSTA, S. B.; STENCEL, R. E.; BACKMAN, D. E. Infrared Space Observatory Mapping of 60 mu m Dust Emission Around Vega-type Systems 6-- 1997Astron.&Astrophys.Vol.322.p.576G GREINER, J.; BICKERT, K.; LUTHARDT, R.; VIOTTI, R.; ALTAMORE, A.; GONZALEZ-RIESTRA, R.; STENCEL, R.E. The UV/X-ray emission of the symbiotic star AG Draconis during quiescence and the 1994/1995 outbursts. 5-- 1997ApJ...477..825C CREECH-EAKMAN, MICHELLE J.; STENCEL, ROBERT E.; WILLIAMS, W. JOHN; KLEBE, DIMITRI I. Silicate Feature Variation in Long-Period Variable Stars. I. Initial Observations \begin{abstract} We report new mid-infrared spectra of four bright, long period variable stars (LPV), and related objects, obtained at the Wyoming Infrared Observatory (WIRO) with Denver University's medium resolution CAESR instrument. The data, when combined with LRS spectra from IRAS, show variation of the silicate feature with phase of the LPV. We perform a calculation for impingement time of the shock on the circumstellar dust shell to demonstrate that this variation could be due to a shock-shell interaction. \end{abstract} \keywords{silicate emissions features, mid-infrared spectra, long period variable stars} 4=====SPIE9610----------------- New dual-aperture telescope for the Mt. Evans observatory MEYER, ERIC; STENCEL, ROBERT; BRUNS, DONALD The Meyer Foundation, Univ. of Denver, Stellar Products Proc. SPIE Vol. 2828, p. 463-471, Image Propagation through the Atmosphere, J. C. Dainty; Luc R. Bissonnette; Eds. Publication Date: 10/1996 -- 1996SPIE.2828..463M Abstract-- An unusual dual-aperture 28.5-inch, f/21 Ritchey-Chretien telescope has been completed and will be installed in the recently upgraded University of Denver extreme high altitude observatory facility, atop 14,268 ft. Mount Evans in Colorado. Designed to optimize high spatial resolution imaging, the Meyer binocular telescope incorporates active thermal management of the telescope structure. The secondary mirror support elements are fabricated from INVAR and permit active tip-tilt and focusing capability. The optics were fabricated from Zerodur by Contraves USA, and each system has a measured total wavefront error less than 0.050 lambda at 633 nm. All optical surfaces are coated with a multi- layer dielectric enhanced silver, providing high reflectance from below 350 nm to beyond 26 micrometer. The telescope control system has been designed to allow initial operation from an insulated control room. Long-term plans call for totally remote operation from the University of Denver campus via direct microwave radio link. Instrumentation planned for the telescope at first light includes: (1) a low order 400 nm to 1,000 nm band adaptive optics system (AO5: adaptive optics, 5 mode) equipped with a large format CCD camera; (2) a mid-infrared array camera (TNTCAM: ten and twenty micron camera); and (3) a mid-IR moderate dispersion spectrometer (TGIRS: two grating IR spectrometer). Some of the science problems the dual aperture telescope is uniquely situated to tackle include the study of planetary atmosphere, detection of planetary systems around nearby stars and the analysis of evolutionary changes in stars. The Mount Evans site (at 4,303 meters elevation, the highest operating astronomical facility in the world) is located 70 km west of Denver and can be reached via a paved state highway which extends all the way to the summit. The observatory is currently under construction with installation of the telescope planned for late summer 1996. 3=====APJ9608------------------ Title: Variable Dust Features in Infrared Spectra of AU Cygni Authors: LITTLE-MARENIN,I.R.; STENCEL,R.E.; STALEY,S.B. 1996 Astrophysical Journal v.467, p.806 (August 20th) Abstract: We report the first clear evidence for variation in the infrared spectral features due to silicates, in the circumstellar shell of the oxygen- rich Mira variable AU Cygni, based on individual scans obtained with the IRAS low-resolution spectrometer (LRS), during the 1983 IRAs mission. For the optically thin shell of AU Cyg, the contrast of the silicate emission is stronger near optical maximum, and weaker near optical minimum. etc. 3=====APJ9606----------------- Title: Short term Chromospheric Variability in alpha Tauri (K5 III): Results from IUE Time Series Observations Authors: CUNTZ,M.; DEENEY,B.D.; BROWN,A., and STENCEL,R.E. 1996 (June) Astrophysical Journal v.464, p.426 Abstract: to be added 2=====APJ9510----------------- Title: Model of a Kuiper Belt Small Grain Population and Resulting Far-Infrared Emission Authors: BACKMAN,D.E.; DASGUPTA,A.; STENCEL,R.E. 1995 (Oct.) Astrophys.Journal.v.450,p.35L Abstract: to be added 1=====AP&SS95----------------- Title: Silicates in Evolved Stars: The LRS-Maser Chronology Revisited Author: STENCEL,R.E. 1995 Astrophys&Space Sci.vol.224.p.563 Abstract: Since the publication of our correlation (1990 Ap.J. 350, L45) suggesting a temporal relationship among: (a) shapes of 10 micron silicates seen in IRAS Low Resolution Spectra (LRS); (b) IRAS broad band colors; (c) light curve asymmetries, and (d) the types of masers associated with various Mira variable stars, the question has arisen whether the implied chronology refelcts the interval between thermal pulses, or the more lengthy ascent of the AGB. There is evidence in favor of the former interpretation. A strong implication of this idea is that variability among pre-silicate spectra should be significant. Several examples of this have been found in the extended LRS database, and are presented. Finally, plans to continue monitoring of selected variables in the 10 micron region, are presented, to verify the variability suggested in the limited phase coverage provided in the LRS database. Monitoring will include use of our facilities at the Mt.Evans-Womble Observatory -highest in the world- at 4,313 meters altitude. ---ETC---------- Access to unpublished manuscripts: EG And HST spectra: forthcoming ROSAT observations of AG Dra: forthcoming C II profile variations observed with IUE: forthcoming FOR ADDITIONAL ABSTRACTS, POINT TO: http://adsabs.harvard.edu/abstract_service.html .