Search Results - "Penny, Laura R"

Orbits of Four Very Massive Binaries in the R136 Cluster by Massey, Philip, Penny, Laura R, Vukovich, Julia

Get full text

A FUSE Survey of the Rotation Rates of Very Massive Stars in the Small and Large Magellanic Clouds by Penny, Laura R, Gies, Douglas R

Get full text

PHOTOMETRIC AND SPECTROSCOPIC STUDIES OF MASSIVE BINARIES IN THE LARGE MAGELLANIC CLOUD. I. INTRODUCTION AND ORBITS FOR TWO DETACHED SYSTEMS: EVIDENCE FOR A MASS DISCREPANCY? by MASSEY, Philip, MORRELL, Nidia I, NEUGENT, Kathryn F, PENNY, Laura R, DEGIOIA-EASTWOOD, Kathleen, GIES, Douglas R

“…The stellar mass-luminosity relation is poorly constrained by observations for high-mass stars. We describe our program to find eclipsing massive binaries in…”
Get full text

TOMOGRAPHIC SEPARATION OF COMPOSITE SPECTRA. XII. THE PHYSICAL PROPERTIES AND SPECTRAL PHASE VARIABILITY OF THE MASSIVE CLOSE BINARY HD 159176 by Penny, Laura R., Epps, Jacob G., Snyder, Joseph D.

“…ABSTRACT We present our analysis of the double-lined, O-binary HD 159176 based on observations made with the International Ultraviolet Explorer (IUE). We use…”
Get full text

PHOTOMETRIC AND SPECTROSCOPIC STUDIES OF MASSIVE BINARIES IN THE LARGE MAGELLANIC CLOUD. II. THREE O-TYPE SYSTEMS IN THE 30 Dor REGION by Morrell, Nidia I, Massey, Philip, NEUGENT, KATHRYN F, Penny, Laura R, Gies, Douglas R

“…This is the second paper in a series devoted to the study of massive binary systems in the Large Magellanic Cloud (LMC). We mainly aim to provide accurate data…”
Get full text

Tomographic Separation of Composite Spectra. XI. The Physical Properties of the Massive Close Binary HD 100213 (TU Muscae) by Penny, Laura R, Ouzts, Cynthia, Gies, Douglas R

“…We present the results of a Doppler tomographic reconstruction of the UV spectra of the double-lined, O binary…”
Get full text

Effects of Metallicity on the Rotational Velocities of Massive Stars by Penny, Laura R, Sprague, Amanda J, Seago, George, Gies, Douglas R

“…Recent theoretical predictions for low-metallicity massive stars predict that these stars should have drastically reduced equatorial winds (mass loss) while on…”
Get full text

Tomographic Separation of Composite Spectra. X. The Massive Close Binary HD 101131 by Gies, Douglas R, Penny, Laura R, Mayer, Pavel, Drechsel, Horst, Lorenz, Reinald

Get full text

Tomographic Separation of Composite Spectra. VIII. The Physical Properties of the Massive Compact Binary in the Triple Star System HD 36486 (δ Orionis A) by Harvin, James A, Gies, Douglas R, Bagnuolo, Jr., William G, Penny, Laura R, Thaller, Michelle L

Get full text

Tomographic Separation of Composite Spectra. IX. The Massive Close Binary HD 115071 by Penny, Laura R, Gies, Douglas R, Wise, John H, Stickland, D. J, Lloyd, C

Get full text

Tomographic Separation of Composite Spectra. VII. The Physical Properties of the Massive Triple System HD 135240 (δ Circini) by Penny, Laura R, Seyle, Debra, Gies, Douglas R, Harvin, James A, Bagnuolo, Jr., William G, Thaller, M. L, Fullerton, A. W, Kaper, L

Get full text

Tomographic Separation of Composite Spectra. VI. The Physical Properties of the Massive Close Binary HD 152248 by Penny, Laura R, Gies, Douglas R, Bagnuolo, Jr., William G

Get full text

The Struve-Sahade Effect: A Tale of Three Stars by Bagnuolo, Jr., William G, Gies, Douglas R, Riddle, Reed, Penny, Laura R

Get full text

Tomographic Separation of Composite Spectra. IV. The Physical Properties of the Massive Close Binary DH Cephei by Penny, Laura R, Gies, Douglas R, Bagnuolo, Jr., William G

Get full text

Tomographic Separation of Composite Spectra. III. Ultraviolet Detection of the Hot Companion of phi Persei by Thaller, Michelle L., Bagnuolo, William G., Jr, Gies, Douglas R., Penny, Laura R.

Get full text

Photospheric Heating in Colliding-Wind Binaries by Gies, Douglas R, Bagnuolo, Jr., William G, Penny, Laura R

Get full text

The O-Type Binary 15 Monocerotis Nears Periastron by Gies, Douglas R, Mason, Brian D, Bagnuolo, Jr., William G, Hahula, Michael E, Hartkopf, William I, McAlister, Harold A, Thaller, Michelle L, McKibben, William P, Penny, Laura R

Get full text

A FUSE SURVEY OF THE ROTATION RATES OF VERY MASSIVE STARS IN THE SMALL AND LARGE MAGELLANIC CLOUDS by Penny, Laura R., Gies, Douglas R.

“…We present projected rotational velocity values for 97 Galactic, 55 SMC, and 106 LMC O-B type stars from archival FUSE observations. The evolved and unevolved…”
Get full text

Projected Rotational Velocities of O-Type Stars by Penny, Laura R.

Get full text

The Frequency of Binary Stars in the Young Cluster Trumpler 14 by Penny, Laura R., Gies, Douglas R., Hartkopf, William I., Mason, Brian D., Turner, Nils H.

“…We present radial-velocity data for the six brightest members of the open cluster Trumpler 14 based on high-dispersion spectra obtained over a five-night…”
Get full text