G. Neugebauer

Publication List Details

Period

1959 - 2009

Number

95

Co-Authors

High Spatial Resolution Hubble Space Telescope NICMOS Observations of Markarian 231 (2009)

F. J. Low, G. Schneider, G. Neugebauer

ABSTRACT. Observations of Markarian 231 at 1.1 mm taken with NICMOS on the Hubble Space Telescope are described. The brightness of the object in the near-infrared, and the inherent short-term...

+656: A Quadruple Lens System Found in the CLASS Gravitational Lens Survey (2007)

S. T. Myers, Myers Fassnacht, S. G. Djorgovski, R. D. Bl, K. Matthews, G. Neugebauer, ...

The first phase of a large gravitational lens survey using the Very Large Array at a wavelength of 3.6 cm has been completed, yielding images for 3258 radio sources. The Cosmic Lens All-Sky Survey,...

Absolute Calibration and Characterization of the Multiband Imaging Photometer for Spitzer. I. The Stellar Calibrator Sample and the 24 μm Calibration (2007)

Engelbracht, C. W., Blaylock, M., Su, K. Y. L., Rho, J., Rieke, G. H., Muzerolle, J., ...

We present the stellar calibrator sample and the conversion from instrumental to physical units for the 24 μm channel of the Multiband Imaging Photometer for Spitzer (MIPS). The primary calibrators...

Absolute Calibration and Characterization of the Multiband Imaging Photometer for Spitzer. III. An Asteroid-based Calibration of MIPS at 160 microns (2007)

Stansberry, J. A., Gordon, K. D., Bhattacharya, B., Engelbracht, C. W., Rieke, G. H., Marleau, F. R., ...

We describe the absolute calibration of the Multiband Imaging Photometer for Spitzer (MIPS) 160 micron channel. After the on-orbit discovery of a near-IR ghost image that dominates the signal for...

Absolute Calibration and Characterization of the Multiband Imaging Photometer for Spitzer. I. The Stellar Calibrator Sample and the 24 micron Calibration (2007)

Engelbracht, C. W., Blaylock, M., Su, K. Y. L., Rho, J., Rieke, G. H., Muzerolle, J., ...

We present the stellar calibrator sample and the conversion from instrumental to physical units for the 24 micron channel of the Multiband Imaging Photometer for Spitzer (MIPS). The primary...

Spitzer Observations of the Brightest Galaxies in X-ray-Luminous Clusters (2006)

Egami, E., Misselt, K. A., Rieke, G. H., Wise, M. W., Neugebauer, G., ...

We have studied the infrared properties of the brightest cluster galaxies (BCGs) located in the cores of X-ray-luminous clusters at 0.15 < z < 0.35. The majority of the BCGs are not particularly...

Spitzer Observations of High Redshift QSOs (2006)

Hines, D. C., Krause, O., Rieke, G. H., Fan, X., Blaylock, M., Neugebauer, G.

We have observed 13 z >= 4.5 QSOs using the Multiband Imaging Photometer for Spitzer, nine of which were also observed with the Infrared Array Camera. The observations probe rest wavelengths ~...

Spitzer Observations of the Brightest Galaxies in X-ray-Luminous Clusters (2006)

Egami, E., Misselt, K. A., Rieke, G. H., Wise, M. W., Neugebauer, G., ...

We have studied the infrared properties of the brightest cluster galaxies (BCGs) located in the cores of X-ray-luminous clusters at 0.15 < z < 0.35. The majority of the BCGs are not particularly...

Spitzer Observations of the Brightest Galaxies in X-ray-Luminous Clusters (2006)

Egami, E., Misselt, K. A., Rieke, G. H., Wise, M. W., Neugebauer, G., ...

We have studied the infrared properties of the brightest cluster galaxies (BCGs) located in the cores of X-ray-luminous clusters at 0.15 < z < 0.35. The majority of the BCGs are not particularly...

Spitzer Observations of the Brightest Galaxies in X-ray-Luminous Clusters (2006)

Egami, E., Misselt, K. A., Rieke, G. H., Wise, M. W., Neugebauer, G., ...

We have studied the infrared properties of the brightest cluster galaxies (BCGs) located in the cores of X-ray-luminous clusters at 0.15 < z < 0.35. The majority of the BCGs are not particularly...

Spitzer Observations of the Brightest Galaxies in X-Ray-Luminous Clusters (2006)

Egami, E., Misselt, K.A., Rieke, G.H., Wise, M.W., Neugebauer, G., Kneib, J.P., ...

We have studied the infrared properties of the brightest cluster galaxies (BCGs) located in the cores of X-ray-luminous clusters at 0.15

Sub-Arcsecond Mid-Infrared Observations of NGC 6240: Limitations of AGN-Starburst Power Diagnostics (2005)

Egami, E., Neugebauer, G., Soifer, B. T., Matthews, K., Becklin, E. E., Ressler, M. E.

In order to examine the relative importance of powerful starbursts and Compton-thick AGNs in NGC 6240, we have obtained mid-infrared images and low-resolution spectra of the galaxy with sub-arcsecond...

Far Infrared Observations of Radio Quasars and FR II Radio Galaxies (2005)

Shi, Y., Rieke, G. H., Hines, D. C., Neugebauer, G., Blaylock, M., Rigby, J., ...

We report MIPS photometry of 20 radio-loud quasars and galaxies at 24 and 70 um (and of five at 160 um). We combine this sample with additional sources detected in the far infrared by IRAS and ISO...

HST Observations of the Luminous IRAS Source FSC10214+4724: A Gravitationally Lensed Infrared Quasar (2004)

Eisenhardt, P.R., Armus, L., Hogg, D.W., Soifer, B.T., Neugebauer, G., Werner, M.W.

Hubble Space Telescope (HST) data taken of the IRAS source FSC 10214+4724 suggest that the object has been gravitationally lensed by a galaxy in the foreground and that this lensing may be magnifying...

HST Observations of the Luminous IRAS Source FSC10214+4724: A gravitationally Lensed Infrared Quasar (2004)

Eisenhardt, P.R., Armus, L., Hogg, D.W., Soifer, B.T., Neugebauer, G., Werner, M.W.

Observations of a distant object in space with the data being taken by the Hubble Space Telescope (HST) Wide Field Planetary Camera. Scientific examination and hypothesis related to this object which...

An analytic cylindrically symmetric solution for collapsing dust (2004)

Hennig, J., Neugebauer, G.

Dust configurations are the simplest models for astrophysical objects. Here we examine the gravitational collapse of an infinite cylinder of dust and give an analytic interior solution. Surprisingly,...

HST Imaging Polarimetry of the Gravitational Lens FSC10214+4724 (2004)

Nguyen, H. T., Eisenhardt, P. R., Werner, M. W., Goodrich, R., Hogg, D. W., Armus, L., ...

This paper reports the results of imaging polarimetry of FSC10214+4724, carried out in the continuum at an observed wavelength of 437nm using the HST's Faint Object Camera (FOC).

Near Infrared Observations of a Redshift 5.34 Galaxy: Further Evidence for Significant Dust Absorption in the Early Universe (2004)

Armus, L., Matthews, K., Neugebauer, G., Soifer, B. T.

In the last several years, the combination of new wavelength dropout discovery techniques coupled with the incredible power of deep imaging of the Hubble Space Telescope and the spectroscopic...

High Spatial Resolution HST/NICMOS Observations of Markarian 231 (2004)

Low, F. J., Schneider, G., Neugebauer, G.

Observations of Markarian 231 at 1.1 microns taken with NICMOS on the Hubble Space Telescope are described. The brightness of the object in the near infrared and the inherent short-term stability of...

Far Infrared Source Counts at 70 and 160 microns in Spitzer Deep Surveys (2004)

Dole, H., Floc'h, E. Le, Perez-Gonzalez, P. G., Papovich, C., Egami, E., Lagache, G., ...

We derive galaxy source counts at 70 and 160 microns using the Multiband Imaging Photometer for Spitzer (MIPS) to map the Chandra Deep Field South (CDFS) and other fields. At 70 microns, our...

Confusion in the infrared: Spitzer and beyond (2004)

Dole, H., Rieke, G. H., Lagache, G., Puget, J-L., Alonso-Herrero, A., Bai, L., ...

We use the source counts measured with the Multiband Imaging Photometer for Spitzer (MIPS) at 24, 70, and 160 microns to determine the 5-sigma confusion limits due to extragalactic sources: 56...

The 24 Micron Source Counts in Deep Spitzer Surveys (2004)

Papovich, Casey, Dole, H., Egami, E., Floc'h, E. Le, Perez-Gonzalez, P. G., Alonso-Herrero, A., ...

Galaxy source counts in the infrared provide strong constraints on the evolution of the bolometric energy output from distant galaxy populations. We present the results from deep 24 micron imaging...

Overdensities of Extremely Red Objects in the Fields of High-Redshift Radio-Loud Quasars (2003)

Wold, M., Armus, L., Neugebauer, G., Jarrett, T. H., Lehnert, M. D.

We have examined the occurrence of Extremely Red Objects (EROs) in the fields of 13 luminous quasars (11 radio-loud and two radio-quiet) at 1.8 < z < 3.0. The average surface density of K_s19 mag...

Progress in relativistic gravitational theory using the inverse scattering method (2003)

Neugebauer, G., Meinel, R.

The increasing interest in compact astrophysical objects (neutron stars, binaries, galactic black holes) has stimulated the search for rigorous methods, which allow a systematic general relativistic...

High Spatial Resolution Mid-infrared Observations of Three Seyfert Galaxies (2003)

Soifer, B. T., Bock, J. J., Marsh, K., Neugebauer, G., Matthews, K., Egami, E., ...

Images at 12.5 microns of nuclei of three nearby Seyfert galaxies -- NGC 1275, NGC 4151 and NGC 7469 -- have been obtained with the Keck 10-m Telescope. NGC 7469 is resolved and deconvolution...

The Compact Nucleus of the Deep Silicate Absorption Galaxy NGC 4418 (2003)

Evans, A. S., Becklin, E. E., Scoville, N. Z., Neugebauer, G., Soifer, B. T., Matthews, K., ...

High resolution, Hubble Space Telescope (HST) near-infrared and Keck mid-infrared images of the heavily extinguished, infrared luminous galaxy NGC 4418 are presented. These data make it possible to...

The surface density of Extremely Red Objects in high-z quasar fields (2003)

Wold, M., Armus, L., Neugebauer, G., Jarrett, T. H., Lehnert, M. D.

We report on a study of the surface density of Extremely Red Objects (EROs) in the fields of 13 radio-loud quasars at 1.8 < z < 3.0 covering a total area of 61.7 sqr arcmin. There is a large...

Asymptotically flat solutions to the Ernst equation with reflection symmetry (2003)

Meinel, R., Neugebauer, G.

It is shown that the class of asymptotically flat solutions to the axisymmetric and stationary vacuum Einstein equations with reflection symmetry of the metric is uniquely characterized by a simple...

The First Measurement of Spectral Lines in a Short-Period Star Bound to the Galaxy's Central Black Hole: A Paradox of Youth (2003)

Ghez, A. M., Duchene, G., Matthews, K., Hornstein, S. D., Tanner, A., Larkin, J., ...

We have obtained the first detection of spectral absorption lines in one of the high-velocity stars in the vicinity of the Galaxy's central supermassive black hole. Both Brgamma (2.1661 micron) and...

General relativistic gravitational field of a rigidly rotating disk of dust: Solution in terms of ultraelliptic functions (2003)

Neugebauer, G., Meinel, R.

In a recent paper we presented analytic expressions for the axis potential, the disk metric, and the surface mass density of the global solution to Einstein's field equations describing a rigidly...

Solutions of Einstein's field equations related to Jacobi's inversion problem (2003)

Meinel, R., Neugebauer, G.

A new class of exact solutions to the axisymmetric and stationary vacuum Einstein equations containing n arbitrary complex parameters and one arbitrary real solution of the axisymmetric...

Near-Infrared Observations of Powerful High-Redshift Radio Galaxies: 4C 40.36 and 4C 39.37 (2002)

Egami, E., Armus, L., Neugebauer, G., Murphy Jr, T. W., Soifer, B. T., Matthews, K., ...

We present near-infrared imaging and spectroscopic observations of two FR II high-redshift radio galaxies (HzRGs), 4C 40.36 (z=2.3) and 4C 39.37 (z=3.2), obtained with the Hubble, Keck, and Hale...

Mid-Infrared Spectroscopy of Infrared Luminous Galaxies with Sub-Arcsecond Resolution (2002)

Soifer, B. T., Neugebauer, G., Matthews, K., Egami, E., Weinberger, A. J.

Low spectral resolution (delta lambda/lambda ~ 50) mid-infrared observations with high angular resolution (0.3--0.5'') using the Long Wavelength Spectrometer on the Keck I Telescope are reported of...

High Resolution Mid-Infrared Imaging of Infrared Luminous Starburst Galaxies (2001)

Soifer, B. T., Neugebauer, G., Matthews, K., Egami, E., Weinberger, A. J., Ressler, M., ...

Observations for seven infrared luminous starburst galaxies are reported in the mid-infrared from 8 - 18 microns using the Keck Telescopes with spatial resolution approaching the diffraction limit....

High Spatial Resolution Imaging of NGC 1068 in the Mid Infrared (2000)

Bock, J. J., Neugebauer, G., Matthews, K., Soifer, B. T., Marsh, K., ...

Mid-infrared observations of the central source of NGC 1068 have been obtained with a spatial resolution in the deconvolved image of 0.1" (~ 7pc). The central source is extended by ~1" in the...

APM 08279+5255: Keck Near- and Mid-IR High-Resolution Imaging (2000)

Egami, E., Neugebauer, G., Soifer, B. T., Matthews, K., Ressler, M., Becklin, E. E., ...

We present Keck high-resolution near-IR (2.2 microns; FWHM~0.15") and mid-IR (12.5 microns; FWHM~0.4") images of APM08279+5255, a z=3.91 IR-luminous BALQSO with a prodigious apparent bolometric...

High Resolution Mid-Infrared Imaging of Ultraluminous Infrared Galaxies (1999)

Soifer, B. T., Neugebauer, G., Matthews, K., Egami, E., Becklin, E. E., Weinberger, A. J., ...

Observations of ultraluminous infrared galaxies (ULIRGs) with an achieved resolution approaching the diffraction limit in the mid-infrared from 8 - 25 $\mu$m using the Keck Telescopes are reported....

High Resolution Infrared Imaging of the Compact Nuclear Source in NGC4258 (1999)

Chary, R., Becklin, E. E., Evans, A. S., Neugebauer, G., Scoville, N. Z., Matthews, K., ...

We present high resolution imaging of the nucleus of NGC4258 from 1 micron to 18 microns. Our observations reveal that the previously discovered compact source of emission is unresolved even at the...

The Nature of the Compact/Symmetric Near-IR Continuum Source in 4C 40.36 (1999)

Egami, E., Armus, L., Neugebauer, G., Soifer, B. T., Evans, A. S., Murphy Jr., T. W.

Using NICMOS on HST, we have imaged the emission-line nebulae and the line-free continuum in 4C 40.36, a ultra-steep spectrum FR II radio galaxy at z=2.269. The line-free continuum was found to be...

Near Infrared Observations of the Extremely Red Object CL0939+4713B: An Old Galaxy at z~1.58? (1999)

Soifer, B. T., Matthews, K., Neugebauer, G., Armus, L., Cohen, J. G., Persson, S. E., ...

Near infrared imaging and spectroscopic observations of the extremely red object (R-K~ 7 mag) CL 0939+4713 B have been obtained with the Near Infrared Camera on the Keck I Telescope of the W. M. Keck...

Diffraction-Limited Imaging and Photometry of NGC 1068 (1999)

Weinberger, A. J., Neugebauer, G., Matthews, K.

The nearby Seyfert 2 Galaxy NGC 1068 was observed with speckle imaging techniques in the near-infrared H-band (1.6 microns) at the Hale 200-inch Telescope and K-band (2.2 microns) at the 10 m Keck I...

Variability of Quasars at 10 microns (1999)

Neugebauer, G., Matthews, K.

Twenty five low redshift quasars have been monitored for several decades at five near- and mid-infrared wavelengths to detect rapid variations which would indicate that a nonthermal component was...

High Resolution WFPC2 Imaging of IRAS 09104+4109 (1999)

Armus, L., Soifer, B. T., Neugebauer, G.

With a infrared luminosity of nearly 10^13 Lsuns, IRAS 09104+4109 is the most luminous galaxy with z

The Host Galaxy of GRB 990123 (1999)

Bloom, J. S., Odewahn, S. C., Djorgovski, S. G., Koresko, C., Neugebauer, G., ...

We present deep images of the field of gamma-ray burst (GRB) 990123 obtained in a broad-band UV/visible bandpass with the Hubble Space Telescope, and deep near-infrared images obtained with the...

HST NICMOS Observations of FSC10214+4724 (1998)

Evans, A. S., Scoville, N. Z., Dinshaw, N., Armus, L., Soifer, B. T., Neugebauer, G., ...

High-resolution, 1.10, 2.05, 2.12, and 2.15 micron imaging of the gravitationally lensed system FSC10214+4724 are presented. These data extend HST observations of the lens system to redder...

Infrared, Radio, and X-Ray Observations of Cygnus X-3. (1998)

Becklin,E. E., Neugebauer,G., Wynn-Williams,C. G., Hawkins,F. J., Matthews,K.

The X-ray source Cygnus X-3 has been interpreted as being a binary system on the basis of extensive X-ray observations of periodic variability. At radio wavelengths, the source displays erratic...

HST Imaging Polarimetry of the Gravitational Lens FSC10214+4724 (1998)

Nguyen, Hien T., Eisenhardt, Peter R., Werner, Michael W., Goodrich, Robert, Hogg, David W., Armus, Lee, ...

We present imaging polarimetry of the extremely luminous, redshift 2.3 IRAS source FSC10214+4724. The observations were obtained with HST's Faint Object Camera in the F437M filter, which is free of...

High Spatial Resolution Imaging of Arp 220 from 3 - 25 microns (1998)

Soifer, B. T., Neugebauer, G., Matthews, K., Becklin, E. E., Ressler, M., Werner, M. W., ...

Images of Arp 220 from 3.45 to 24.5 $\mu$m with 0.5'' resolution are presented which clearly separate the nucleus into at least two components. The western component is about three times more...

Near Infrared Observations of a Redshift 5.34 Galaxy: Further Evidence for Dust Absorption in the Early Universe (1998)

Armus, L., Matthews, K., Neugebauer, G., Soifer, B. T.

Imaging at 1.25 and 2.20 microns has been obtained of the field containing the galaxy (RD1) found at redshift 5.34 by Dey et al.(1998). This galaxy has been detected at 1.25 microns, while the lower...

Near Infrared Observations of a Redshift 4.92 Galaxy: Evidence for Significant Dust Absorption (1998)

Soifer, B. T., Neugebauer, G., Franx, M., Matthews, K., Illingworth, G.

Near-infrared imaging and spectroscopy have been obtained of the gravitationally lensed galaxy at z=4.92 discovered in HST images by Franx et al. (1997). Images at 1.2, 1.6 and 2.2 microns show the...

The [OIII] Emission-line Nebula of the z=3.594 Radio Galaxy 4C +19.71 (1997)

Armus, L., Soifer, B. T., Murphy Jr., T. W., Neugebauer, G., Evans, A. S., Matthews, K.

We have imaged the z=3.594 radio galaxy 4C +19.71 in the light of the redshifted [OIII] 5007 angstrom emission line, using a narrow-band filter centered at 2.3 microns with the Near Infrared Camera...

The Unusual Near-Infrared Morphology of the Radio Loud Quasar 4C+09.17 (1997)

Armus, L., Neugebauer, G., Lehnert, M. D., Matthews, K.

Near-infrared images of the luminous, high redshift (z=2.1108) radio loud quasar 4C+09.17 reveal a complex structure. The quasar (K=15.76 mag) is surrounded by three "companion" objects having 17.9<...

Near Infrared Imaging of the Hubble Deep Field with The Keck Telescope (1996)

Hogg, David W., Neugebauer, G., Armus, Lee, Matthews, K., Pahre, Michael A., Soifer, B. T., ...

Two deep K-band ($2.2 \mu m$) images, with point-source detection limits of $K=25.2$ mag (one sigma), taken with the Keck Telescope in subfields of the Hubble Deep Field, are presented and analyzed....

HST Observations of the Luminous IRAS Source FSC10214+4724: A Gravitationally Lensed Infrared Quasar (1995)

Eisenhardt, Peter R., Armus, Lee, Hogg, David W., Soifer, B. T., Neugebauer, G., Werner, Michael W.

We present an image of the redshift 2.3 IRAS source FSC10214+4724 at 0.8 microns obtained with the HST WFPC2 Planetary Camera. The source appears as an unresolved (< 0.06") arc 0.7" long, with...

A Luminous Companion to SGR 1806-20 (1995)

Van Kerkwijk, M. H., Kulkarni, S. R., Matthews, K., Neugebauer, G.

We have obtained infrared spectra of the star suggested to be the counterpart of the soft gamma-ray repeater (SGR) 1806-20. We found strong emission lines similar to those seen in the spectra of the...

Optical and Infrared Observations of SGR 1806-20 (1994)

Kulkarni, S. R., Matthews, K., Neugebauer, G., Reid, I. N., Van Kerkwijk, M. H., Vasisht, G.

The soft gamma-ray repeater (SGR) 1806$-$20 is associated with the center-brightened non-thermal nebula G~10.0$-$0.3, thought to be a plerion. As in other plerions, a steady \Xray\ source,...

Comparative cardiovascular actions of verapamil and its major metabolites in the anaesthetised dog (1978)

NEUGEBAUER, G.

After intracoronary administration in 12 dogs verapamil exhibited considerably greater vasodilator efficacy than the metabolites nor-verapamil (D 591, N-demethylated form of verapamil), D 617...

Quantification of collateral resistance in acute and chronic experimental coronary occlusion in the dog (1976)

Winkler, B, Wüsten, B, Türschmann, W, Neugebauer, G, ...

The resistance to coronary blood flow in various parts of the myocardium was studied with the tracer microspheres technique before and immediately after an acute coronary occlusion and several weeks...

Pi-/Pi+ ratio from deuterium in photoproduction at 500-1000 Mev (1959)

Neugebauer, G., Wales, W. D., Walker, R. L.

The ratio of charged pions photoproduced from deuterium has been studied using the brems-strahlung photon beam from the electron synchrotron at the California Institute of Technology. The ratio...