Publications

The following is a list of my publications. To obtain copies of preprints/reprints of titles which cannot be downloaded directly from this page, please email me.

Refereed Publications

B. Astromineralogy of the 13 Micron Feature in the Spectra of Oxygen-Rich AGB Stars. II. Silica
DePew, Kyle, Speck, Angela K., Dijkstra, Catharinus & Anne M. Hofmeister
2006, in preparation.

C. Room temperature forsterite and fayalite absorbances
Pitman K.M., Hofmeister A.M., Speck A.K., Dijkstra C.R.,
2006, in preparation.

D. Laboratory measurements of silicon carbide I. Optical constants and reflectance spectra
Pitman K.M., Hofmeister A.M., Speck A.K.
2006, in preparation.

E. An Extremely Extended Dust Shell around AFGL 618: Submillimeter Imaging and Radiative Transfer Modeling
Angela Speck, Karen Wilson, Josh Tartar, Margaret Meixner, D. C. Lis, Maia Nenkova, & Moshe Elitzur
2006, Astrophysical Journal, submitted.

F. The Infrared Spectrum of the Red Supergiant WOH G064 in the Large Magellanic Cloud
Dijkstra, C., & Speck, A. K.
2006, Astrophysical Journal, submitted.

1. Challenging the Carbon Star Dust Condensation Sequences: Anarchist C-Stars
Grant D. Thompson, Adrian B. Corman, Angela K. Speck, & Catharinus Dijkstra
2006, Astrophysical Journal, 652, 1654-1673.

2. Shaping Bipolar Planetary Nebulae: How Mass Loss Leads to Waistline Development
Dijkstra, C., & Speck, A. K.
2006, Astrophysical Journal, 651, 288-293.

3. The Unusual Spitzer Spectrum of the Carbon Star IRAS 04496-6958: A Different Condensation Sequence in the LMC?
Angela K. Speck, Jan Cami, Ciska Markwick-Kemper, Jarron Leisenring,
Ryszard Szczerba, Catharinus Dijkstra, Schuyler Van Dyk, & Margaret Meixner
2006, Astrophysical Journal, 650, 892-900.

4. Detached shells as tracer of AGB-ISM bow shocks
C. Wareing, A. Zijlstra, T. Ueta, A. K. Speck, R. E. Stencel, M. Elitzur, R. Gertz,
F. Herwig, H. Izumiura, W. Latter, M. Matsuura, M. Meixner, M. Steffen, & R. Szczerba
2006, Monthly Notices of the Royal Astronomical Society, 372, L63-L67.

5. Challenging the Identification of Nitride Dust in Extreme Carbon Star Spectra
K. M. Pitman, A. K. Speck & A. M. Hofmeister
2006, Monthly Notices of the Royal Astronomical Society, 371, 1744-1754.

6. Detection of a Bow-Shock-Like Far-IR Nebula Associated with R Hya: the First MIRIAD Results
T. Ueta, A. K. Speck, R. E. Stencel, M. Elitzur, R. Gertz, F. Herwig, H. Izumiura,
W. Latter, M. Matsuura, M. Meixner, M. Steffen, R. Szczerba, & A. Zijlstra
2006, Astrophysical Journal Letters, 648, L39-L42.

7. Massive-Star Supernovae as Major Dust Factories
Ben E. K. Sugerman, Barbara Ercolano, M. J. Barlow, A. G. G. M. Tielens, Geoffrey C. Clayton, Albert A. Zijlstra, Margaret Meixner, Angela Speck, Tim M. Gledhill, Nino Panagia, Martin Cohen, Karl D. Gordon, Martin Meyer, Joanna Fabbri, Janet. E. Bowey, Douglas L. Welch, Michael W. Regan & Robert C. Kennicutt, Jr.
2006, Science, 313, 196.

8. Astromineralogy of the 13 Micron Feature in the Spectra of Oxygen-Rich AGB Stars. I. Corundum and Spinel
DePew, Kyle, Speck, Angela K., Dijkstra, Catharinus
2006, Astrophysical Journal, 640, 971.

9. The 10µm Feature of M-Type Stars in the LMC and the Dust Condensation Sequence
Dijkstra, C., Speck, A. K., Reid, R.B., P. Abraham.
2005, Astrophysical Journal Letters, 633, L133.

10. The effect of stellar evolution on SiC dust grain sizes.
Speck, Angela K., Thompson, Grant D., Hofmeister, Anne M.
2005, Astrophysical Journal Letters, 634, 426.

11. The multitude of molecular hydrogen knots in the Helix Nebula
Meixner, Margaret, McCullough, Peter, Hartman, Joel , Son, Minho, Speck, A.K.
2005, Astronomical Journal, 130, 1784.

12. Processing of presolar grains around post-AGB stars:
silicon carbide as the carrier of the ``21''µm feature.''
Speck, A.K., Hofmeister, A.M.,
2004, ApJ, 600, 986-991.

13. The Dust Ring of Luminous Blue Variable Candidate HD 168625:
Infrared Observations and Model Calculations"
Timothy B. O'Hara, Margaret Meixner, Angela K. Speck, Toshiya Ueta, & Matthew Bobrowsky
2003, ApJ, 598, 1255-1264

14. Absorption and reflection infrared spectra pf MgO and other diatomic compounds
Hofmeister, A.M., Keppel, E. & Speck, A.K.,
2003, MNRAS, 345, 16-38.

15. Molecular hydrogen in the Ring Nebula: clumpy photo-dissociation regions
Speck, A.K., Meixner, M., Jacoby, G.H. & Knezek, P.
2003, Publications of the Astronimcal Society of the Pacific, 115, 170-177.

16. Two Subclasses of ProtoPlanetary Nebulae: Model Calculations
Meixner, M., Ueta, T., Bobrowsky, M., & Speck, A.K.,
2002, Astrophysical Journal, 571, 936-946.
(PDF file)

17. Large-scale extended emission around the Helix Nebula: dust, molecules, atoms and ions.
Speck, A.K., Meixner, M., Fong, D., McCullough, P.R., Moser, D. & Ueta, T.,
2002, Astronomical Journal, 123, 346-361.
(PDF file)

18. Discovery of parsec-sized dust shells around AFGL2688 and AFGL 618 (HTML file)
Speck, A.K., Meixner, M. & Knapp, G.R.,
2000, Astrophysical Journal Letters , 545, L145-L148.

19. Dust features in the 10-µm infrared spectra of oxygen-rich evolved stars (HTML file)
Speck, A.K., Barlow, M.J., Sylvester, R.J., & Hofmeister, A.M.,
2000, Astronomy & Astrophysics Supplement Series, 146, 437-464.
(PDF file)

20. Silicon Carbide: The Problem with Laboratory Spectra (.ps file),
Speck, A.K., Hofmeister, A.M., & Barlow, M.J.,
2000, In "Thermal Emission Spectroscopy of Dust, Disks, and Regoliths" Eds Sitko M.L., Sprague A.L. & Lynch D.K., ASP Conference Series, vol. 196, 281-290.

21. IR spectra of nano- and macro-crystals: the overriding importance of optical path (PDF file),
Hofmeister, A.M., Rosen, L.J., Speck, A.K.
2000, In "Thermal Emission Spectroscopy of Dust, Disks, and Regoliths" Eds Sitko M.L., Sprague A.L. & Lynch D.K., ASP Conference Series, vol. 196, 291-299.

22. The silicon carbide problem: astronomical and meteoritic evidence (html),
Speck, A.K., Hofmeister, A.M., & Barlow, M.J.,
1999, Astrophysical Journal Letters , 513, L87-L90
(PDF file)

23. Ice, silicates and PAH emission features in the ISO spectrum of the carbon-rich planetary nebula CPD-56 8032 (html),
Cohen, M., Barlow, M.J., Sylvester, R.J., Liu, X.-W., Cox, P., Lim, T., Scmitt, B. & Speck, A.K.,
1999, Astrophysical Journal Letters , 513, L135-L138
(PDF file)

24. The nature of the silicon carbide in carbon star outflows (PDF file),
Speck, A.K., Barlow, M.J., & Skinner, C.J.,
1997, Monthly Notices of the Royal Astronomical Society, vol. 288 , pp431-456.

25. The nature of silicon carbide: astronomical observations vs meteoritic evidence (PDF file),
Speck, A.K., Barlow, M.J., & Skinner, C.J.,
1997, Meteoritics & Planetary Science , vol. 32, No. 5, pp702-712.

26. The influence of weathering on the measured oxygen isotopic compositon of ordinary chondrites
Franchi, I.A., Bland, P., Berry, F.J., Speck, A., & Pillinger, C.T.,
1994, Meteoritics, vol. 29, pp467.

Conference Proceedings

27. Spitzer/MIPS Imaging of the Extremely Extended Dust Shell(s) around R Hya
Angela Speck,Toshiya Ueta and the MIRIAD TEAM
In Proceedings of IAU Symposium 234: Planetary Nebulae in Our Galaxy and Beyond, editors: M.J. Barlow. & R.H. Mendez, in press

28. CLOUDY modeling of weird Far-IR emission in the central zone of the Helix Nebula
Adrienne Dove, Angela Speck
In Proceedings of IAU Symposium 234: Planetary Nebulae in Our Galaxy and Beyond, editors: M.J. Barlow. & R.H. Mendez, in press

29. HST Study of the Molecular Gas in Planetary Nebulae
Josh Tartar, Sarah Eyermann, Angela Speck, Margaret Meixner
In Proceedings of IAU Symposium 234: Planetary Nebulae in Our Galaxy and Beyond, editors: M.J. Barlow. & R.H. Mendez, in press

30. Circumstellar dust in the Large Magellanic Cloud
C. Dijkstra, A. K. Speck, R.B. Reid, C. Markwick-Kemper, J. Leisenring
In Proceedings of Stellar Evolution at Low Metallicity: Mass Loss, Explosions, Cosmology, editors: Lamers, Langer, Nugis & Annuk, in press

31. The Nature and Origin of Molecular Knots in Planetary Nebulae
Eyermann, S. E., Speck, A. K., Meixner, M., McCullough, P. R., Hora, J.
Planetary Nebulae as Astronomical Tools. AIP Conference Proceedings, 804, 145.

32. Episodic Mass Loss on the Timescale of Thermal Pulses: Radiative Transfer Modeling of the Egg Nebula
Speck, A. K., Meixner, M., Elitzur, M., Nenkova, M.
Asymmetrical Planetary Nebulae III: Winds, Structure and the Thunderbird, Edited by Margaret Meixner, Joel H. Kastner, Bruce Balick and Noam Soker. ASP Conference Proceedings, 313, 303

33. The Hubble Helix
Meixner, M., McCullough, P., Hartman, J., O'dell, R., Speck, A. K.
Asymmetrical Planetary Nebulae III: Winds, Structure and the Thunderbird, Edited by Margaret Meixner, Joel H. Kastner, Bruce Balick and Noam Soker. ASP Conference Proceedings, 313, 234

34. Observational Evidence for Presolar Grains Around Oxygen-rich Evolved Stars
Speck, A.K.,, Hofmeister, A. M., Mora, M.
2003, Workshop on Cometary Dust in Astrophysics, August 10-15, 2003, Crystal Mountain, Washington,

35. Periodic Enhancements in Mass Loss on the AGB: Radiative transfer modeling of the parsec-sized dust shell around the Egg Nebula
Speck, A.K.,, Meixner, M., Nenkova, M. & Elitzur, M.,
2002, In the proceedings of the "Workshop on Mass-losing Pulsating Stars and their Circumstellar Matter", Eds. Y. Nakada \& M. Honma, submitted.

36. Silicon Carbide as the Carrier of the 21µm feature
Speck, A.K.,, & Hofmeister, A.M.
In the proceedings of the "IAU Symposium 209, Planetary Nebulae: Their Evolution and Role in the Universe", in press.

37. High resolution molecular hydrogen imaging of the Ring nebula
Speck, A.K.,, Meixner, M., Knezek, P. & Jacoby, G.H. In the proceedings of the "IAU Symposium 209, Planetary Nebulae: Their Evolution and Role in the Universe", in press.

38. Large-scale extended emission around the Helix Nebula
Speck, A.K.,, Meixner, M., Fong, D. McCullough, P.R., Moser, D.E. & Ueta, T.
In the proceedings of the "IAU Symposium 209, Planetary Nebulae: Their Evolution and Role in the Universe", in press.

39. ISOPHOT Observations of Post-AGB Stars: Fossil Records of Mass Loss
2001, In proceedings of the "ISOPHOT Workshop on P32 Oversampled Mapping", Eds. B. Schulz, S. Peschke, in press.

40. Big, bumpy dust shells around protoplanetary nebulae
Speck, A.K.,, Meixner, M. & Ueta, T.
2001, In proceedings of "Post-AGB objects as a phase of stellar evolution", Eds. R. Szczerba, S.K. Gorny, Kluwer, Dordrecht, 333.

41. ISOPHOT observations of protoplanetary nebulae: evidence for extremely extended dust shells around post-AGB objects? (PDF file)
Speck, A.K.,, Meixner, M., Ueta, T. & Knapp, G.R.,
(2001) In proceedings of "Tetons 4: Galactic Structure, Stars and the Interstellar Medium", Eds. C.E. Woodward, M.D. Bicay, and J.M. Shull, A.S.P. conf. ser. 231, 550.
; PDF poster

42. Spatial Distributions of Multiple Dust Components in the PPN/PN Circumstellar Dust Shells
Ueta, T., Speck, A.K., Meixner, M. , Dayal, A., Deutsch, L.K., Fazio, G., Hora, J.L., Hoffmann, W.F.
2001, In proceedings of "Post-AGB objects as a phase of stellar evolution", Eds. R. Szczerba, S.K. Gorny, Kluwer, Dordrecht, 339.
Postscript miniposter

43. Mineralogy of dust around oxygen-rich evolved stars (PDF file)
Speck, A.K.,, Barlow, M.J., & Sylvester, R.J.
(2001) In proceedings of "Tetons 4: Galactic Structure, Stars and the Interstellar Medium", Eds. C.E. Woodward, M.D. Bicay, and J.M. Shull, A.S.P. conf. ser. 231, 553.
PDF poster

44. Circumstellar Dust Around Post-AGB Stars (PDF file)
Speck, A.K., Meixner, M., & Knapp, G.R.,
2000, In Proceedings of "ISO Beyond Point Sources: Studies of Extended Infrared Emission", September 14-17, 1999, ISO Data Centre, Villafranca del Castillo, Madrid, Spain. Edited by R. J. Laureijs, K. Leech and M. F. Kessler, ESA-SP 455, 2000. p. 83.

45. Causes of artifacts in the infrared spectra of powders
Hofmeister, A.M., Keppel, E.T., Bowey, J.E., & Speck, A.K.,
(2000) In Proceedings of "ISO beyond the peaks: The 2nd ISO workshop on analytical spectroscopy", February 2-4, 2000, at ISO Data Centre, Villafranca del Castillo, Madrid, Spain. Edited by A. Salama, M.F.Kessler, K. Leech & B. Schulz. ESA-SP 456, 2000. p 343.

46. UIR Bands in Carbon Stars
Speck, A.K., & Barlow, M.J.,
1997, Astrophysics & Space Science , 251 pp115-121. Also in "Dust & Molecules in Evolved Stars": Conference Proceedings

47. Observations of the 11 micron Silicon Carbide Feature in Carbon Star Shells
Speck, A.K., Barlow, M.J., & Skinner, C.J.,
1996, In "From Stardust to Planetesimals: Contributed Papers" Eds M.E.Kress, A.G.G.M. Tielens and Y.J. Pendleton, NASA Conf. Publ. 3343, California, pg61.

Selected Abstracts

This section is under revision

Periodic Enhancements in Mass Loss on the AGB: Radiative transfer modeling of the parsec-sized dust shell around the Egg Nebula - POSTER
Speck, A.K.,, Meixner, M., Nenkova, M. & Elitzur, M.,
Workshop on Mass-losing Pulsating Stars and their Circumstellar Matter, Sendai Japan, MAy 2002.

Processing of Presolar Grains Around Post-AGB Stars: Silicon Carbide as the Carrier of the 21µm Feature - ORAL
Speck, A.K., & Hofmeister, A.M.,
Lunar \& Planetary Science Conference, Houston, 33, #1155, March 2002.

Formation of Presolar Crystalline Silicates: The Effect of ²⁶A - ORAL
Speck, A.K.,, Kemper, F., Whittington, A.G., Molster, F.J. & Herwig, F., , Lunar \& Planetary Science Conference, Houston, 33, #1155, March 2002.

Large-scale extended emission around the Helix Nebula - ORAL
Speck, A.K. Meixner, M., Fong, D. McCullough, P.R., Moser, D.E. & Ueta, T.
American Astronomical Society Meeting 199, Washington DC, January 2002

Silicon Carbide as the Carrier of the 21µm feature - POSTER
Speck, A.K. & Hofmeister, A.M.,
IAU Symposium 209, Planetary Nebulae: Their Evolution and Role in the Universe Canberra, Australia, November 2001.

High resolution molecular hydrogen imaging of the Ring nebula - POSTER
Speck, A.K. Meixner, M., Knezek, P. & Jacoby, G.H.
IAU Symposium 209, Planetary Nebulae: Their Evolution and Role in the Universe Canberra, Australia, November 2001.

Large-scale extended emission around the Helix Nebula - POSTER
Speck, A.K. Meixner, M., Fong, D. McCullough, P.R., Moser, D.E. & Ueta, T.
IAU Symposium 209, Planetary Nebulae: Their Evolution and Role in the Universe Canberra, Australia, November 2001.

Dust around oxygen-rich evolved stars - ORAL
Speck, A.K., Hofmeister, A.M., Barlow, M.J. & Sylvester, R.J.
Workshop on Interstellar Silicates, Leiden, The Netherlands, April 2001,

Observations of Circumstellar Dust Shells Around Proto-Planetary Nebulae - POSTER
Meixner, M, Speck, A.K., Ueta, T., Knapp, G.R., Hoffmann, W.F., Hinz, P.M., Hora, J.L., Fazio, G., Deutsch, L.K.
American Astronomical Society Meeting 197, #06.13

Infrared Studies of Silicon Carbide - POSTER,
Speck, A.K., & Hofmeister, A.M.
at 63rd Annual Meeting of the Meteoritical Society: Chicago, IL, August 28 - September 1, 2000:

Observational Evidence for Presolar Grains around Oxygen-rich Evolved Stars - ORAL ,
Speck, A.K., Hofmeister, A.M. Barlow, M.J. & Sylvester, R.J.,
at 63rd Annual Meeting of the Meteoritical Society: Chicago, IL, August 28 - September 1, 2000:

Silicon Dioxide in the Infrared Spectra of Oxygen-rich Evolved Stars - POSTER,
Speck, A.K., Barlow, M.J., & Sylvester, R.J.,
at Astrochemistry: From Molecular Clouds to Planetary Systems, IAU Symposium 197, held in Cheju Island, South Korea, Aug 23 - 27, 1999:
PDF file

The Mineralogical Evolution of Silicate Dust in Interstellar Environments - ORAL
Bowey, J.E.; Adamson, A.J.; & Speck, A.K.
Workshop on Thermal Emission Spectroscopy and Analysis of Dust, Disks, and Regoliths, April 28-30, 1999, Houston, Texas, abstract no. 3029

Resolution of the SiC problem: astronomical and meteoritic evidence reconciled - POSTER
Speck, A.K., Hofmeister, A.M., & Barlow, M.J.,
at Asymptotic Giant Branch Stars, IAU Symposium 191 Poster Session, #P3-21, held in Montpellier, France, Aug 28 - Sept 1, 1998

Silicon Carbide: astronomical and meteoritic evidence reconciled - POSTER
Speck, A.K., Hofmeister, A.M., & Barlow, M.J.,
at the Faraday Discussion no. 109: Chemistry and Physics of Molecules and Grains in Space, The University of Nottingham, UK, 15-17 April 1998. - joint winner of the Skinner Poster Prize.

Silicon Carbide absorption features in the outflows of carbon stars - POSTER
Speck, A.K., & Barlow, M.J.,
at the "Conference on the Astrophysical Implications of the Laboratory Study of Presolar Materials", Washington University, St Louis, MO, October 1996

Observations of the 11 micron Silicon Carbide Feature in Carbon Star Shells - POSTER
Speck, A.K., Barlow, M.J., & Skinner, C.J.
at the IAU Symposium 177 "The Carbon Star Phenomenon", Antalya, Turkey, May 1996.

Digital elevation models of the North Polar regions of Mars - POSTER,
Speck, A.K., Murray, J.B., & Rothery, D.A.,
1995, L.P.S.C., 26, 1017.
(I was involved in this work after the abstract was submitted - my name does not appear on this abstract - but it did appear on the poster - the other authors can confirm my involvement in this work.)

"Mineralogy of Dust around Evolved Stars"
Ph.D. Thesis

A.K. Speck

submitted 21st September 1998

accepted November 1998

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speck@missouri.edu

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