NPOI-RELATED REFEREED PUBLICATIONS (This page contains links to ADS)
 
2013

The Navy Precision Optical Interferometer (NPOI): An Update, Armstrong, J. T. et al. 2013,    Journal of Astronomical Instrumentation, submitted. 
Navy Precision Optical Interferometer Observations of the Exoplanet Host κ Coronae Borealis and Their Implications for the Star's and Planet's Masses and Ages, Baines, E. K. et al. 2013, ApJ, 771, L17. 

Dynamical mass of the O-type supergiant in Zeta Ori A, Hummel, C.A. et al. 2013, A&A, 554, A52.

An interferometric study of the post-AGB binary 89 Herculis. I. Spatially resolving the continuum circumstellar environment at optical and near-IR wavelengths with the VLTI, NPOI, IOTA, PTI, and the CHARA Array, M.H. Hillen, T. Verhoelst, H. Van Winckel, O. Chesneau, C. A. Hummel, J. D. Monnier, C. Farrington, C. Tycner, D. Mourard, T. ten Brummelaar,   D. P. K. Banerjee, R. T. Zavala ,  2013,  A&A.
 
 2012

Ground-based Optical Interferometry, Hutter, D. J. 2012, Scholarpedia, 7(6):10586.

Imaging Disk Distortion of Be Binary System δ Scorpii near Periastron, Che, X., Monnier, J. D., Tycner, C., Kraus, S., Zavala, R. T., Baron, F., Pedretti, E., ten Brummelaar, T., McAlister, H., Ridgway, S. T., Sturmann, J., Sturmann, L., and Turner, N., 2012, Astrophys. J. 757, 29.  Times Cited,  (ADS: 0) 

Optical Observations with Milliarcsecond Resolution of Stars, Their Environments and Companions,  Sanborn, J. J., and Zavala, R. T., 2012, J. Astron. Space Sci. 29, 63. Times Cited,  (ADS: 0) 

Confirming Fundamental Parameters of the Exoplanet Host Star epsilon Eridani Using the Navy Optical Interferometer,  Baines, E. K., and Armstrong, J. T. 2012,  Astrophys. J.  744, 138.  Times Cited,  (ADS: 0)

 2011

NPOI Observations of Geosynchronous Satellites, Hindsley, R. B. et al. 2011, Applied Optics, 50, 2692.

Navy Prototype Optical Interferometer observations of geosynchronous satellites, Hindsley, R. B., Armstrong, J. T., Schmitt, H. R., Andrews, J. R., Restaino, S. R., Wilcox, C. C., Vrba, F. J., Benson, J. A., Divittorio, M. E., Hutter, D. J., Shankland, P. D., and Gregory, S. A. 2011, Appl. Opt. 50, 2692. Times Cited,  (ADS: 0)

 The Revised Orbit of the delta Sco System,  Tycner, C., Ames, A., Zavala, R. T., Hummel, C. A., Benson, J. A., and Hutter, D. J. 2011, Astrophys. J. (Lett.), 729, L5.  Times Cited, (ADS: 2)

 2010

 The Spatially Resolved Halpha-emitting Wind Structure of P Cygni, Balan, A., Tycner, C., Zavala, R.T., Benson, J.A., Hutter, D.J., and Templeton, M. 2010, Astron. J., 139, 2269. Times Cited,  (ADS: 2)

Properties and nature of Be stars. 28. Implications of systematic observations for the nature of the multiple system with the Be star o Cassiopeæ and its circumstellar environment,   Koubský, P., Hummel, C. A., Harmanec, P., Tycner, C., van Leeuwen, F., Yang, S., Šlechta, M., Božić, H., Zavala, R. T., Ruždjak, D., and Sudar, D. 2010, Astron. Astrophys. 517, A24.  Times Cited,  (ADS: 1)

 A New View of Vega's Composition, Mass, and Age, Yoon, J., Peterson, D.M., Kurucz, R.L., and Zagarello, R.J. 2010, Astrophys. J., 708, 71.   Times Cited, (ADS: 2)
 The Algol Triple System Spatially Resolved at Optical Wavelengths, Zavala, R.T., Hummel, C.A., Boboltz, D.A., Ojha, R., Shaffer, D.B., Tycner, C., Richards, M.T., and Hutter, D.J. 2010, Astrophys. J. (Lett.), 715, L44. Times Cited,  (ADS: 4)

2009

Observations of Geosynchronous Satellites with the Navy Prototype Optical Interferometer, Hindsley, R. 2009, Appl. Optics, in preparation.  Times Cited,  (ADS: 0) 

Navy Prototype Optical Interferometer Imaging of Line Emission Regions of Beta Lyrae Using Differential Phase Referencing, Schmitt, H.R., Pauls, T.A., Tycner, C., Armstrong, J.T., Zavala, R.T., Benson, J.A., Gilbreath, G.C., Hindsley, R.B., Hutter, D.J., Johnston, K.J., Jorgensen, A.M., and Mozurkewich, D. 2009, Astrophys. J., 691, 984.  Times Cited,  (ADS: 10)

 2008

 A Parameter Study of Classical Be Star Disk Models Constrained by Optical Interferometry, Jones, C.E., Tycner, C., Sigut, T.A.A., Benson, J.A., and Hutter, D.J. 2008, Astrophys. J., 687, 598.  Times Cited,  (ADS: 11) 

Optical Interferometric Observations of Theta 1 Orionis C from NPOI and Implications for the System Orbit, Patience, J., Zavala, R.T., Prato, L., Franz, O., Wasserman, L., Tycner, C., Hutter, D.J., and Hummel, C.A. 2008, Astrophys. J. (Lett.), 674, L97.  Times Cited,  (ADS: 14)

 Constraining the Physical Parameters of the Circumstellar Disk of Chi Ophiuchi, Tycner, C., Jones, C.E., Sigut, T.A.A., Schmitt, H.R., Benson, J.A., Hutter, D.J., and Zavala, R.T. 2008, Astrophys. J., 689, 461.  Times Cited, (ADS: 15)

 The Effect of Rotation on the Spectrum of Vega, Yoon, J., Peterson, D.M., Zagarello, R.J., Armstrong, J.T., and Pauls, T. 2008, Astrophys. J., 681, 570.  Times Cited, (ADS: 11)

2007

Improved Coherent Integration through Fringe Model Fitting, Jorgensen, A.M., Mozurkewich, D., Armstrong, J.T., Schmitt, H., Pauls, T.A., and Hindsley, R. 2007, Astron. J., 134, 1544.  Times Cited,  (ADS: 3)

Adaptive Optics Performance Model for Optical Interferometry, Mozurkewich, D., Restaino, S.R., Armstrong, J.T., and Gilbreath, G.C. 2007, Applied Optics IP, 46, 4413.  Times Cited,  (ADS: 0)

 The Effect of Rotation on Calibrators for Ground-Based Interferometry, Yoon, J., Peterson, D.M., Armstrong, J.T., Clark III, J.H., Gilbreath, G.C., Pauls, T., Schmitt, H.R., and Zagarello, R.J. 2007, Pub. Astron. Soc. Pacific, 119, 437.  Times Cited,  (ADS: 1)

 The Mercury-Manganese Binary Star Phi Herculis: Detection and Properties of the Secondary and Revision of the Elemental Abundances of the Primary, Zavala, R.T., Adelman, S.J., Hummel, C.A., Gulliver, A.F., Caliskan, H., Armstrong, J.T., Hutter, D.J., Johnston, K.J., and Pauls, T.A. 2007, Astrophys. J., 655, 1046.  Times Cited, (ADS: 10)

2006

The Hyades Binary Theta 2 Tauri: Confronting Evolutionary Models with Optical Interferometry, Armstrong, J.T., Mozurkewich, D., Hajian, A.R., Johnston, K.J., Thessin, R.N., Peterson, D.M., Hummel, C.A., and Gilbreath, G.C. 2006, Astron. J., 131, 2643.  .  Times Cited,   (ADS: 9)

 Vega is a Rapidly Rotating Star, Peterson, D.M., Hummel, C.A., Pauls, T.A., Armstrong, J.T., Benson, J.A., Gilbreath, G.C, Hindsley, R.B., Hutter, D.J., Johnston, K.J., Mozurkewich, D., and Schmitt, H.R. 2006, Nature, 440, 896.    Times Cited,   (ADS: 62)

 Resolving the Effects of Rotation in Altair with Long-Baseline Interferometry, Peterson, D.M., Hummel, C.A., Pauls, T.A., Armstrong, J.T., Benson, J.A., Gilbreath, G.C., Hindsley, R.B., Hutter, D.J., Johnston, K.J., Mozurkewich, D., and Schmitt, H. 2006, Astrophys. J., 636, 1087.   Times Cited,   (ADS: 29)

 Constraining Disk Parameters of Be Stars using Narrowband H-alpha Interferometry with the Navy Prototype Optical Interferometer, Tycner, C., Gilbreath, G.C., Zavala, R.T., Armstrong, J.T., Benson, J.A., Hajian, A.R., Hutter, D.J., Jones, C.E., Pauls, T.A., and White, N.M. 2006, Astron. J., 131, 2710.   Times Cited, (ADS: 27)

 Tests of Stellar Model Atmospheres by Optical Interferometry. III. NPOI and VINCI Interferometry of the M0 Giant Gamma Sagittae Covering 0.5-2.2 microns, Wittkowski, M., Hummel, C.A., Aufdenberg, J.P., and Roccatagliata, V. 2006, Astron. Astrophys., 460, 843.  Times Cited,  (ADS: 11)

2005

Gravitational-Darkening of Altair from Interferometry, Domiciano de Souza, A., Kervella, P., Jankov, S., Vakili, F., Ohishi, N., Nordgren, T.E., and Abe, L. 2005, Astron. Astrophys., 442, 567.   Times Cited, (ADS: 28)

A Data Exchange Standard for Optical (Visible/IR) Interferometry,  Pauls, T.A., Young, J.S., Cotton, W.D., and Monnier, J.D.
2005, Pub. Astron. Soc. Pacific, 117, 1255.   Times Cited,  (ADS: 34)

 Properties of the H-alpha-Emitting Circumstellar Regions of Be Stars, Tycner, C., Lester, J.B., Hajian, A.R., Armstrong, J.T., Benson, J.A., Gilbreath, G.C., Hutter, D.J., Pauls, T.A., and White, N.M. 2005, Astrophys. J., 624, 359.    Times Cited,  (ADS: 27)

2004

 Optical Interferometric Polarimetry. II. Theory, Elias II, N.M. 2004, Astrophys. J., 611, 1175.  Times Cited, (ADS: 7)

 Asymmetric Surface Brightness Distribution of Altair Observed with the Navy Prototype Optical Interferometer, Ohishi, N., Nordgren, T.E., and Hutter, D.J. 2004, Astrophys. J., 612, 463.  Times Cited,  (ADS: 17)

 The Circumstellar Envelope of Zeta Tauri through Optical Interferometry, Tycner, C., Hajian, A.R., Armstrong, J.T., Benson, J.A., Gilbreath, G.C., Hutter, D.J., Lester, J.B., Mozurkewich, D., and Pauls, T.A. 2004, Astron. J., 127, 1194.   Times Cited,  (ADS: 28)

 A Purely Geometric Distance to the Binary Star Atlas, a Member of the Pleiades, Zwahlen, N., North P., Debernardi, Y., Eyer, L., Galland, F., Groenewegen, M.A.T., and Hummel, C.A., 
2004, Astron. Astrophys., 425, L45.  Times Cited,  (ADS: 28)

2003

First Observations with a Co-Phased Six-Station Optical Long-Baseline Array: Application to the Triple Star Eta Virginis, Hummel, C.A., Benson, J.A., Hutter, D.J., Johnston, K.J., Mozurkewich, D., Armstrong, J.T., Hindsley, R.B., Gilbreath, G.C., Rickard, L.J, and White, N.M.,  2003, Astron. J., 125, 2630.  Times Cited, (ADS: 32)

Cepheid Limb Darkening Models for the VLTI,  Marengo, M., Karovska, M., Sasselov, D. D., Papaliolios, C., Armstrong, J. T., and Nordgren, T. E., 2003, Astrophys. Space Sci. 286, 185.  Times Cited,  (ADS: 0)

 Theoretical Limb Darkening for Classical Cepheids. II. Corrections for the Geometric Baade-Wesselink Method,  Marengo, M., Karovska, M., Sasselov, D. D., Papaliolios, C., Armstrong, J. T., and Nordgren, T. E., 2003, Astrophys. J. 589, 968.  Times Cited,  (ADS: 24)

 Angular Diameters of Stars from the Mark III Optical Interferometer,  Mozurkewich, D., Armstrong, J. T., Hindsley, R. B., Quirrenbach, A., Hummel, C. A., Hutter, D. J., Johnston, K. J., Hajian, A. R., Elias, Nicholas M., II, Buscher, D. F., and Simon, R. S., 2003, Astron. J. 126, 2502.  Times Cited,  (ADS: 72)

 A Method for Internal Calibration of Optical Interferometer Data and Application to the Circumstellar Envelope of Gamma Cassiopeiae, Tycner, C., Hajian, A.R., Mozurkewich, D., Armstrong, J.T., Benson, J.A., Gilbreath, G.C., Hutter, D.J., Pauls, T.A. and Lester, J.B.,  2003, Astron. J., 125, 3378.  Times Cited,  (ADS: 9)

 2002

The Effect of TiO Absorption on Optical and Infrared Angular Diameters of Cool Stars, Dyck, H.M. and Nordgren, T.E.,  2002, Astron. J., 124, 541.    Times Cited, (ADS: 3)

Alignment of Optical Delay Lines for Long-Baseline Stellar Interferometry, Germain, M.E. 2002, J. Optical Society America, 19, 81.   Times Cited,  (ADS: 0)

Theoretical Limb Darkening for Pulsating Cepheids,  Marengo, M., Sasselov, D. D., Karovska, M., Papaliolios, C., and Armstrong, J. T., 2002, Astrophys. J. 567, 1131.  Times Cited, (ADS: 24)

Calibration of the Barnes-Evans Relation Using Interferometric Observations of Cepheids, Nordgren, T.E., Lane, B.F., Hindsley, R.B., and Kervella, P. 2002, Astron. J., 123, 3380.  Times Cited,   (ADS: 39)

An Observational Test of the Spherical Model Atmospheres for the M Class Giants: The Case of Delta 2 Lyrae, Sudol, J.J., Benson, J.A., Dyck, H.M., and Scholz, M. 2002, Astron. J., 124, 3370.   Times Cited,  (ADS: 4)

2001

Diameters of Delta Cephei and Eta Aquilae Measured with the Navy Prototype Optical Interferometer, Armstrong, J.T., Nordgren, T.E., Germain, M.E., Hajian, A.R., Hindsley, R.B., Hummel, C.A., Mozurkewich, D., and Thessin, R.N. 2001, Astron. J., 121, 476.  Times Cited,  (ADS: 11)

Optical Interferometric Polarimetry. I. Foundation, Elias II, N.M. 2001, Astrophys. J., 549, 647.  Times Cited,  (ADS: 13)

Orbital and Stellar Parameters of Omicron Leonis from Spectroscopy and Interferometry,  Hummel, C.A., Carquillat, J.-M., Ginestet, N., Griffin, R.F., Boden, A.F., Hajian, A.R., Mozurkewich, D., and Nordgren T.E., 2001, Astron. J., 121, 1623.  Times Cited, (ADS: 33)

Comparison of Stellar Angular Diameters from the NPOI, the Mark III Optical Interferometer, and the Infrared Flux Method, Nordgren, T.E., Sudol, J.J., and Mozurkewich, D. 2001, Astron. J., 122, 2707.  Times Cited, (ADS: 43)

 Direct Multi-Wavelength Limb-Darkening Measurements of Three Late-Type Giants with the Navy Prototype Optical Interferometer, Wittkowski, M., Hummel, C.A., Johnston, K.J., Mozurkewich, D., Hajian, A.R. and White, N.M. 2001, Astron. Astrophys., 377, 981.   Times Cited,  (ADS: 33)

2000

The 1.0 Megaparsec Galaxy Pair Sample in Low-Density Regions,   Nordgren, T. E., Chengalur, J. N., Salpeter, E. E., and Terzian, Y., 2000, Astrophys. J. 544, 176.  Times Cited,  (ADS: 1)

Photospheric Spots and a Chromospheric Plage on V523 Cassiopeiae,  Elias, N. M., II, and Koch, R. H., 2000, Astron. J. 120, 1548.  Times Cited,  (ADS: 2)

 Zeta Orionis A is a Double Star, Hummel, C.A., White, N.M., Elias II, N.M., Hajian, A.R., and Nordgren, T.E. 2000, Astrophys. J. (Lett.), 540, L91.   Times Cited,  (ADS: 15)

Astrophysical Quantities of Cepheid Variables Measured with the Navy Prototype Optical Interferometer, Nordgren, T.E., Armstrong, J.T., Germain, M.E., Hindsley, R.B., Hajian, A.R., Sudol, J.J., and Hummel, C.A. 2000, Astrophys. J., 543, 972.    Times Cited, (ADS: 29)

 1999

Stellar Angular Diameters of Late-Type Giants and Supergiants Measured with the Navy Prototype Optical Interferometer, Nordgren, T.E., Germain, M.E., Benson, J.A., Mozurkewich, D., Sudol, J.J., Elias II, N.M., Hajian, A.R., White, N.M., Hutter, D.J., Johnston, K.J., Gauss, F.S., Armstrong, J.T., Pauls, T.A., and Rickard, L.J 1999, Astron. J., 118, 3032.   Times Cited,  (ADS: 58)

Radii and Effective Temperatures for G, K, and M Giants and Supergiants,  van Belle, G. T., Lane, B. F., Thompson, R. R., Boden, A. F., Colavita, M. M., Dumont, P. J., Mobley, D. W., Palmer, D., Shao, M., Vasisht, G. X., Wallace, J. K., Creech-Eakman, M. J., Koresko, C. D., Kulkarni, S. R., Pan, X. P., and Gubler, J. 1999, Astron. J. 117, 521.    Times Cited, (ADS: 120)

1998

The Navy Prototype Optical Interferometer, Armstrong, J.T., Mozurkewich, D., Rickard, L.J, Hutter, D.J., Benson, J.A., Bowers, P.F., Elias II, N.M., Hummel, C.A., Johnston, K.J., Buscher, D.F., Clark III, J.H., Ha, L., Ling, L.-C., White, N.M., and Simon, R.S. 1998, Astrophys. J., 496, 550.   Times Cited,  (ADS: 106)

Radii and Effective Temperatures for K and M Giants and Supergiants. II., Dyck, H. M., van Belle, G. T., and Thompson, R. R., 1998, Astron. J. 116, 981.  Times Cited, (ADS: 82)

Direct Confirmation of Stellar Limb Darkening with the Navy Prototype Optical Interferometer, Hajian, A.R., Armstrong, J.T., Hummel, C.A., Benson, J.A., Mozurkewich, D., Pauls, T.A., Hutter, D.J., Elias II, N.M., Johnston, K.J., Rickard, L.J, and White, N.M. 1998, Astrophys. J., 496, 484.   Times Cited, (ADS: 46)

 Navy Prototype Optical Interferometer Observations of the Double Stars Mizar A and Matar, Hummel, C.A., Mozurkewich, D., Armstrong, J.T., Hajian, A.R., Elias II, N.M., and Hutter, D.J. 1998, Astron. J., 116, 2536.  Times Cited, (ADS: 67)

1997 

 Multichannel Optical Aperture Synthesis Imaging of Zeta 1 Ursae Majoris with the Navy Prototype Optical Interferometer, Benson, J.A., Hutter, D.J., Elias II, N.M., Bowers, P.F., Johnston, K.J., Hajian, A.R., Armstrong, J.T., Mozurkewich, D., Pauls, T.A., Rickard, L.J, Hummel, C.A., White, N.M., Black, D., and Denison, C.S. 1997, Astron. J., 114, 1221.   Times Cited,  (ADS: 41)

Seeing Tests at Four Sites in Support of the NPOI Project, Hutter, D.J., Elias II, N.M., Peterson, E.R., Weaver, W.B., Weaver, G., Mozurkewich, D., Vrba, F.J., Simon, R.S., Buscher, D.F., and Hummel, C.A. 1997, Astron. J., 114, 2822.   Times Cited,  (ADS: 2)

Constraints on the Geometry of Circumstellar Envelopes: Optical Interferometric and Spectropolarimetric Observations of Seven Be Stars, Quirrenbach, A., Bjorkman, K. S., Bjorkman, J. E., Hummel, C. A., Buscher, D. F., Armstrong, J. T., Mozurkewich, D., Elias, N. M., II, and Babler, B. L.  1997, Astrophys. J. 479, 477.  Times Cited, (ADS: 185)

 1996

 Radii and effective temperatures for K and M giants and supergiants,  Dyck, H. M., Benson, J. A., van Belle, G. T., and Ridgway, S. T.  1996,  Astron. J. 111, 1705.   Times Cited,  (ADS: 132)

Angular Diameters and Effective Temperatures of Carbon Stars,  Dyck, H. M., van Belle, G. T., and Benson, J. A., 1996, Astron. J. 112, 294.  Times Cited, (ADS: 32)

 1995 

Stellar Optical Interferometry in the 1990s, Armstrong, J.T., Hutter, D.J., Johnston, K.J., and Mozurkewich, D. 1995, Physics Today, 48, 42.   Times Cited, (ADS: 12)

1994

Phase-referenced visibility averaging in optical long-baseline interferometry,  Quirrenbach, A., Mozurkewich, D., Buscher, D. F., Hummel, C. A., and Armstrong, J. T., 1994, Astron. Astrophys. 286, 1019.  Times Cited,   (ADS: 17)
 
Four years of astrometric measurements with the Mark 3 optical interferometer, Hummel, C. A., Mozurkewich, D., Elias, N. M., II, Quirrenbach, A., Buscher, D. F., Armstrong, J. T., Johnston, K. J., Simon, R. S., and Hutter, D. J.  1994, Astron. J.  108, 326.   Times Cited, (ADS: 21)

 Maximum-entropy maps of the Be shell star zeta Tauri from optical long-baseline interferometry, Quirrenbach, A., Buscher, D. F., Mozurkewich, D., Hummel, C. A., and Armstrong, J. T. 1994, Astron. Astrophys. (Lett.) 283, L13.  Times Cited,  (ADS: 58)

 1993

Angular diameter measurements of cool giant stars in strong TiO bands and in the continuum,  Quirrenbach, A., Mozurkewich, D., Armstrong, J. T., Buscher, D. F., and Hummel, C. A., 1993, Astrophys. J. 406, 215.  Times Cited, (ADS: 46)

 1992 

Design Considerations for the USNO Astrometric Optical Interferometer, Hughes, J.A., Kaplan, G.H., and Shao, M. 1991, Astrophys. Space Science, 177, 151.   Times Cited,  (ADS: 0)