Refereed Papers

A Multiwavelength Optical Emission Line Survey of Warm Ionized Gas in the Galaxy

Madsen, Reynolds, & Haffner, 2006, ApJ, 652, 401

PDF [4.8 M]

Estimating the Porosity of the Interstellar Medium from Three-dimensional Photoionization Modeling of H II Regions

Wood, Haffner, Reynolds, Mathis, & Madsen. 2005, ApJ, 633, 295

PDF [664 k]
PostScript [gzip, 775 k]

An Investigation of Diffuse Interstellar Gas toward a Large, Low-Extinction Window into the Inner Galaxy

Madsen & Reynolds. 2005, ApJ, 630, 925

PDF [2 M]
PostScript [gzip, 2 M]

Unresolved Halpha Enhancements at High Galactic Latitude in the WHAM Sky Survey Maps

Reynolds, Chaudhary, Madsen, & Haffner. 2005, AJ, 129, 927

PDF [369 k]
PostScript [gzip, 417 k]

New Measurements of the Motion of the Zodiacal Dust

Reynolds, Madsen, & Moseley. 2004, ApJ, 612, 1206

PDF [634 k]
PostScript [gzip, 704 k]

Observations of solar cyclical variations in geocoronal Hα column emission intensities

Nossal, Roesler, Mierkiewicz, & Reynolds. 2004, GeoRL, 31, L06110

Warm ionized gas in the local interstellar medium

Reynolds. 2004, AdSpR, 34, 27

A Search for Ionized Gas in the Draco and Ursa Minor Dwarf Spheroidal Galaxies

Gallagher, Madsen, & Reynolds. 2003, ApJ, 588, 326

PDF [116 k]
PostScript [128 gzip, k]

The Wisconsin Hα Mapper Northern Sky Survey

Haffner, Reynolds, Tufte, Madsen, Jaehnig, & Percival. 2003, ApJS, 149, 405.

PDF [4.3 M]
PostScript [gzip, 4.5 M]

Measurements of [O I] λ6300/Hα Line Intensity Ratios for Four O Star H II Regions

Hausen, Reynolds, & Haffner. 2002, AJ, 124, 3336

PDF [140 k]
PostScript [gzip, 160 k]

WHAM Observations of Hα from High-Velocity Clouds: Are They Galactic or Extragalactic?

Tufte, Wilson, Madsen, Haffner, & Reynolds. 2002, ApJ, 572, 153

PDF [112 k]
PostScript [gzip, 140k]

Interstellar Hα Line Profiles toward HD 93521 and the Lockman Window

Hausen, Reynolds, Haffner, & Tufte. 2002, ApJ, 565, 1060

PDF [176 k]
PostScript [gzip, 172 k]

Multiwavelength observations of the M15 intermediate-velocity cloud

Smoker, Haffner, Keenan, Davies, & Pollacco. 2002, MNRAS, 337, 385

PDF [684 k]

A New Spin on Galactic Dust

de Oliveira-Costa, Tegmark, Finkbeiner, Davies, Gutierrez, Carlos, Haffner, Jones, Aled, Lasenby, Rebolo, Reynolds, Tufte, & Watson. 2002, ApJ, 567, 363

PDF [160 k]
PostScript [gzip, 164 k]

Observations of the Extended Distribution of Ionized Hydrogen in the Plane of M31

Madsen, Reynolds, Haffner, Tufte, & Maloney. 2001, ApJ, 560, L135

PDF [152 k]
PostScript [gzip, 174 k]

Detection of a Large Arc of Ionized Hydrogen Far Above the Cas OB6 Association: A Superbubble Blowout into the Galactic Halo?

Reynolds, Sterling, & Haffner. 2001, ApJ, 558, L101

PDF [109 k]
PostScript [gzip, 123 k]

A Map of the Ionized Component of the Intermediate-Velocity Cloud Complex K

Haffner, Reynolds, & Tufte. 2001, ApJ, 556, L33

PDF [181 k]
PostScript [gzip, 215 k]
Original Figure 1 [Color Postscript, gzip, 281 k]

Detection of [N II] 5755 Emission from Low Density Ionized Interstellar Gas

Reynolds, Sterling, Haffner, & Tufte. 2001, ApJ, 548, L221

PDF [66 k]
PostScript [gzip, 88 k]

Geocoronal Hα Intensity Measurements Using the Wisconsin Hα Mapper Fabry-Perot Facility

Nossal, Roesler, Bishop, Reynolds, Haffner, Tufte, Percival, & Mierkiewicz. 2001, JGR, 106, 5605

Searching for Additional Heating: [O II] Emission in the Diffuse Ionized Gas of NGC 891, NGC 4631, and NGC 3079

Otte, Reynolds, Gallagher & Ferguson. 2001, ApJ, 560, 207

PDF [2 M]
PostScript [gzip, 3 M]

Galactic Contamination in the QMAP Experiment

de Oliveira-Costa, Tegmark, Devlin, Haffner, Herbig, Miller, Page, Reynolds, & Tufte. 2000, ApJ, 542, L5

PDF [136 k]
PostScript [gzip, 196 k]

Physical Conditions, Grain Temperatures, and Enhanced Very Small Grains in Barnard's Loop

Heiles, Haffner, Reynolds, & Tufte. 2000, ApJ, 536, 335

PDF [709 k]
PostScript [gzip, 885 k]

Observational Evidence of Supershell Blowout in GS 018-04+44: The Scutum Supershell

Callaway, Savage, Benjamin, Haffner, & Tufte, 2000, ApJ, 532, 943

PDF [1.6M]
PostScript [gzip, 2.3M]

Evidence for Dust Emission in the Warm Ionised Medium Using WHAM Data

Lagache, Haffner, Reynolds, & Tufte. 2000, A&A, 354, 247

PDF [182 k]
PostScript [146 k]

Evidence for an Additional Heat Source in the Warm Ionized Medium of Galaxies

Reynolds, Haffner, & Tufte. 1999, ApJ, 525, L21

PDF [537 k]
PostScript [gzip, 87 k]

WHAM Observations of Hα, [S II], and [N II] toward the Orion and Perseus Arms: Probing the Physical Conditions of the Warm Ionized Medium

Haffner, Reynolds, & Tufte. 1999, ApJ , 523, 223

PDF [2.3 M]
PostScript [gzip, 2.3 M]

A Model for the Scattered Light Contribution and Polarization of the Diffuse Hα Galactic Background

Wood & Reynolds. 1999, ApJ, 525, 799

PDF [779 k]
PostScript [gzip, 2.0M]

Identification of Low-Metallicity Gas Accreting onto the Milky Way

Wakker, Howk, Savage, van Woerden, Tufte, Schwarz, Benjamin, Reynolds, Peletier, & Kalberla. 1999, Nature, 402, 388

PDF [270 k]

WHAM Observations of Hα Emission from High Velocity Clouds in the M, A, and C Complexes

Tufte, Reynolds, & Haffner. 1998, ApJ, 504, 773

PDF [672k]
PostScript [gzip, 368k]

Faint, Large-scale Hα Filaments in the Milky Way

Haffner, Reynolds, & Tufte. 1998, ApJ, 501, L83

PDF [600 k]
PostScript [gzip, 3.6M]

Detection of [O I] 6300 Emission from the Diffuse Interstellar Medium

Reynolds, Hausen, Haffner, & Tufte. 1998, ApJ, 494, L99

PDF [134k]
PostScript [gzip, 125k]

Ionizing the Galaxy

Reynolds, Science, 277, 1446
(on-line access to this article may be restricted to subscribers only)

The Wisconsin H-Alpha Mapper (WHAM): A Brief Review of Performance Characteristics and Early Scientific Results

Reynolds, Tufte, Haffner, Jaehnig, & Percival. 1998, Publ. Astron. Soc. Aust., 15, 14

PDF [233 k]
PostScript [gzip, 670k]

Presented by Ron Reynolds at the workshop "Prospects for the AAO/UKST Galactic Plane Hα Survey" held in Sydney, April 16-18, 1997.

Other Publications

Density Distribution of the Warm Ionized Medium

Hill, Reynolds, Benjamin, & Haffner. 2006, in Small Ionized and Neutral Structures in the Diffuse Interstellar Medium, ed. M. Haverkorn & W. M. Goss, ASP Conference Series, in press, astro-ph/0701477

PDF [284 k]

Surveying the Galaxy with WHAM

Reynolds, Haffner, & Madsen. 2004, ASP Conference Proceedings, Vol. 317, Milky Way Surveys: The Structure and Evolution of Our Galaxy, eds. D. Clemens, R. Shah, & T. Brainerd, 186

Three-Dimensional Studies of the Warm Ionized Medium in the Milky Way using WHAM

Reynolds, Haffner, & Madsen. 2002, ASP Conference Proceedings, Vol. 282, Galaxies: The Third Dimension, eds. M. Rosado, L. Binette, and L. Arias, 31

The Wisconsin Hα Mapper Northern Sky Survey

Madsen, Haffner, & Reynolds, 2001, ASP Conference Series, Vol. 276, Seeing Through the Dust, eds. A. R. Taylor, T. L. Landecker, and A. G. Willis, p. 96

PostScript [gzip, 345 k]

Mapping the Galactic Free-Free Foreground via Interstellar Hα Emission

Reynolds & Haffner. 2000, ASP Conference Series, IAU Symposium #201, in press

PostScript [gzip, 1.5M]

The Wisconsin Hα Mapper Northern Sky Survey

Haffner. 2001, ASP Conference Series, Vol. 231, Tetons 4: Galactic Structure, Stars and the Interstellar Medium, eds. C.E. Woodward, M.D. Bicay, and J.M. Shull, p. 345

PostScript [gzip, 1.3M]

The WHAM Hα Mapper: A New Look at the Warm Ionized Medium

Haffner, Reynolds, & Tufte. 2000, Rev. Mex. A&A (Serie de Conf.), 9, 335

PDF [1.8M]

Temperature Variations and Non-photoionization Heating in the Warm Ionized Medium of Galaxies

Reynolds, Haffner, & Tufte. 2000, Rev. Mex. A&A (Serie de Conf.), 9, 249

PDF [148k]

Green Bank Workshop on Warm Ionized Gas in Galaxies

Minter, Lockman, Balser, Reynolds, Savage, Cordes, Rand, & Shull, 2000, PASP, 112, 424

PDF [59k]
PostScript [gzip, 68k]

Probing Intersteller Turbulence in the Warm Ionized Medium Using Emission Lines

Tufte, Reynolds, & Haffner. 1999, Proceedings of the 2nd Guillermo Haro Conference on Interstellar Turbulence held in Puebla, MX, eds. J. Franco and A. Carraminanna (Cambridge University Press)

PostScript [gzip, 449k]

The Gaseous ISM: Observations with the Wisconsin H-alpha Mapper (WHAM)

Reynolds, Haffner, & Tufte. 1999, ASP Conference Series, Vol. 168, New Perspectives on the Interstellar Medium, eds. A.R. Taylor, T.L. Landecker, and G. Joncas, p. 149

The Eridanus Superbubble in its Multiwavelength Glory

Heiles, Haffner, & Reynolds. 1999, ASP Conference Series Vol. 168, New Perspectives on the Interstellar Medium, eds. A.R. Taylor, T.L. Landecker, and G. Joncas, p. 211

Hα from HVCs

Tufte, Reynolds, & Haffner. 1998, ASP Conference Series, Vol 666, Stromlo Workshop on High Velocity Clouds, eds. B.K. Gibson and M.E. Putman

Observational Evidence for the Accretion of Low-Metallicity Gas onto the Milky Way: Metallicity, Physical Conditions, and Distance Limit for HVC Complex C

Wakker, Howk, Savage, Tufte, Reynolds, van Woerden, & Schwarz. 1998, in ASP Conference Series, Vol 666, Stromlo Workshop on High Velocity Clouds, eds. B.K. Gibson and M.E. Putman

The WHAM Hα Survey

Tufte, Reynolds, & Haffner. 1998, in Proc. of the APS, Astrophysics from Antarctica, eds. S.G. Novak & R.H. Landsberg

PostScript [gzip, 312k]

Orion, Eridanus, and the Assembly of Local Superbubbles

Heiles, Reynolds, Haffner, & Tufte. 1998, in Proceedings of IAU Colloquium No. 166 ``The Local Bubble and Beyond'', eds. D. Breitschwerdt, M.J. Freyberg, and J. Trumper

PostScript [gzip, 537k]
Note: Intensities listed in the colorbars of the figures of Hα emission (Figures 4 & 7) are not correct.

Matt Haffner's Ph.D. Thesis

Steve Tufte's Ph.D. Thesis

AAS/DPS/APS Meetings

Comet 73P/Schwassmann-Wachmann 3: O(1D) and H2O Production Rates
Hall, Mierkiewicz, Haffner, Roesler, & Harris, 2006, AAS, 209, #25.13

Mapping [O III] Emission in Diffuse Ionized Gas
Baeber, Haffner, Reynolds, & Madsen, 2006, AAS, 209, #17.22

Density Distribution of the Warm Ionized Medium (PDF [7.4 M])
Hill, Benjamin, Reynolds, Haffner, Kowal, & Lazarian, 2006, AAS, 209, #17.23

The Relationship Between Pulsar Dispersion Measures and Interstellar Hα Intensities at High Galactic Latitude
Hill, Benjamin, Reynolds, & Haffner. 2005, AAS, 207, #81.08

Mapping the Ionized Component of High-Velocity Cloud Complex A
Duncan, Haffner, Madsen, & Reynolds. 2005, AAS, 207, #64.01

Emission Line Spectroscopy of Large, Diffuse Planetary Nebulae
Madsen, Frew, Parker, Reynolds, & Haffner. 2005, AAS, 207, #8.12

WHAM Multiwavelength Observations of the Zeta Oph H II Region
Baker, Haffner, Reynolds, & Madsen. 2004, AAS, 205, #139.03

Unresolved Hα Enhancements at High Galactic Latitude in the WHAM Sky Survey Maps
Chaudhary, Reynolds, Madsen, & Haffner. 2004, AAS, 205, #139.02

The Heterogeneous Nature of the Warm Ionized Medium in the Galaxy
Madsen, Reynolds, & Haffner. 2004, AAS, 205, #41.05

Exploring the Galactic Warm Ionized Medium with WHAM
Haffner. 2002, APS/DPP, #KM1.002

Diffuse, Warm Ionized Gas
Haffner. 2002, AAS, 200, #33.09

Exploring Faint, Large-Scale Filaments in the Warm Ionized Medium of the Galaxy
Madsen, Reynolds, Haffner. 2002, AAS, 200, #42.02

The Wisconsin Hα Mapper Northern Sky Survey
Haffner, Reynolds, Madsen, Tufte, Jaehnig, Percival, Hausen. 2001, AAS, 199, #58.01

The Heterogeneous Nature of the Warm Ionized Medium
Madsen, Reynolds, Haffner. 2001, AAS, 199, #58.02

A Straight and Narrow Ionized Filament: Normal Filamentation or Stellar Contrail?
Benjamin, McCullough, Madsen. 2001, AAS, 199, #151.04

Determination of the Far Infrared Cosmic Background Allowing for Foreground Emission from the Warm Ionized Interstellar Medium
Odegard, Swek, Arendt, Haffner, Reynolds, Hauser, Sodroski. 2001, AAS, #16.09

WHAM Observations of Hα from High Velocity Clouds: Are They Galactic or Extra-Galactic?
Wilson, Tufte, Madsen, Reynolds. 2001, AAS, 198, #96.03

The Extended Distribution of Ionized Hydrogen in M31
Madsen, Reynolds, Tufte, Haffner, Maloney. 2000, AAS, 196, #28.02

Measurements of [O I] 6300/Hα Intensity Ratios in Four H II Regions
Hausen, Reynolds, Haffner, Tufte. 2000, AAS, 196, #26.19

Measurement of Hα Emission toward HD93521 and the Lockman Window
Hausen, Reynolds, Tufte, Haffner. 1999, AAS, 194, #47.19

Emission Line Measurements toward HD93521: [S II] 6716 and [N II] 6584
Pifer, Reynolds, Tufte, Haffner. 1999, AAS, 194, #47.18

A Survey of UV Interstellar Absorption Lines with STIS
Jenkins, Tripp, Bowers, Roesler, Reynolds, Haffner. 1999, AAS, 194, #71.03

WHAM observations of Hα, [S II], and [N II] toward the Perseus Arm: Probing the Physical Conditions of the WIM
Haffner, Reynolds, & Tufte. 1998, AAS, 193, #83.05

The WHAM Hα Sky Survey: Early Results
Haffner, Reynolds, Tufte, Jaehnig, & Percival. 1997, AAS, 191, #50.03

The Wisconsin/GSFC Hale-Bopp Observing Campaign
Scherb, Roesler, Harris, Nordsieck, Anderson, Klinglesmith, Woodward, Mierkiewicz, Haffner, Tufte, Oliversen, Hilton, Doane, Tilleman, Vincent. 1997, DPS, 29, #32.01

First Results from the WHAM Spectrometer: Hα Emission from HVCs and the First Detection of He I 5876 from the WIM
Tufte. 1990, AAS, 190, #17.02

Summary of the Diffuse H II
Reynolds. 1996, AAS, 188, #31.05

First Results from WHAM. I. Hα from HVCs, He I 5876 from the WIM, and the First WIM Temperature Measurement
Tufte, Reynolds, Haffner, & Jaenig. 1996, AAS, 188, #43.08

First Results from WHAM. II. Diffuse [O III] 5007 at High Latitudes and Hα emission from HVCs near Mrk 509
Haffner, Reynolds, & Tufte. 1996, AAS, 188, #43.09

Fabry-Perot Observations of [OI] 6300, Hα, H-Beta, and NH₂ Emissions from Comet Hyakutake C/1996B2
Scherb, Roesler,Tufte, & Haffner. 1996, AAS, 188, #62.11