Trigonometric Parallaxes of 6.7 GHz Methanol Masers (2009)
Rygl, K. L. J., Brunthaler, A., Reid, M. J., Menten, K. M., Van Langevelde, H. J., Xu, Y.
Emission from the 6.7 GHz methanol maser transition is very strong, relatively stable, has small internal motions and is observed toward numerous massive star forming regions in the Galaxy. Our goal...
Sanna, A., Reid, M. J., Moscadelli, L., Dame, T. M., Menten, K. M., Brunthaler, A., ...
We report a trigonometric parallax of 12 GHz methanol masers associated with the massive star forming region G9.62+0.20, corresponding to a distance of 5.2+-0.6 kpc. With a local standard of rest...
A Trigonometric Parallax of Sgr B2 (2009)
Reid, M. J., Menten, K. M., Zheng, X. W., Brunthaler, A., Xu, Y.
We have measured the positions of water masers in Sgr B2, a massive star forming region in the Galactic center, relative to an extragalactic radio source with the Very Long Baseline Array. The...
An Extremely Top-Heavy IMF in the Galactic Center Stellar Disks (2009)
Bartko, H., Martins, F., Trippe, S., Fritz, T. K., Genzel, R., Ott, T., ...
We present new observations of the nuclear star cluster in the central parsec of the Galaxy with the adaptive optics assisted, integral field spectrograph SINFONI on the ESO/VLT. Our work allows the...
Simultaneous Multi-Wavelength Observations of Sgr A* during 2007 April 1-11 (2009)
Yusef-Zadeh, F., Bushouse, H., Wardle, M., Heinke, C., Roberts, D. A., Dowell, C. D., ...
We report the detection of variable emission from Sgr A* in almost all wavelength bands (i.e. centimeter, millimeter, submillimeter, near-IR and X-rays) during a multi-wavelength observing campaign....
Discovery of a bright radio transient in M82: a new radio supernova? (2009)
Brunthaler, A., Menten, K. M., Reid, M. J., Henkel, C., Bower, G. C., Falcke, H.
In this Letter, we report the discovery of a new bright radio transient in M82. Using the Very Large Array, we observed the nuclear region of M82 at several epochs at 22 GHz and detected a new bright...
Reid, M. J., Menten, K. M., Zheng, X. W., Brunthaler, A., Moscadelli, L., Xu, Y., ...
We are using the NRAO Very Long Baseline Array (VLBA) and the Japanese VERA project to measure trigonometric parallaxes and proper motions of masers found in high-mass star-forming regions across the...
Structure and Dynamics of the Milky Way: an Astro2010 Science White Paper (2009)
Reid, M. J., Menten, K. M., Brunthaler, A., Moellenbrock, G. A.
Recent advances in radio astrometry with the VLBA have resulted in near micro-arcsecond accurate trigonometric parallax and proper motion measurements for masers in star forming regions. We are now...
Motions of Galaxies in the Local Group and Beyond: an Astro2010 Science White Paper (2009)
Reid, M. J., Brunthaler, A., Menten, K. M., Loinard, L., Wrobel, J.
Recent advances with the VLBA have resulted in ~10 micro-arcsec astrometry for compact sources in external galaxies, and measurement of the proper motion of Local Group galaxies has been...
CO in OH/IR stars close to the Galactic centre (2009)
Winnberg, A., Deguchi, S., Reid, M. J., Nakashima, J., Olofsson, H., Habing, H. J.
Aims: A pilot project has been carried out to measure circumstellar CO emission from three OH/IR stars close to the Galactic centre. The intention was to find out whether it would be possible to...
Evidence of a pure starburst nature of the nuclear region of NGC 253 (2009)
Brunthaler, A., Castangia, P., Tarchi, A., Henkel, C., Reid, M. J., Falcke, H., ...
We present high-resolution spectral line and continuum VLBI and VLA observations of the nuclear region of NGC 253 at 22 GHz. While the water vapor masers in this region were detected on arcsecond and...
The distance to a star forming region in the Outer arm of the Galaxy (2009)
Hachisuka, K., Brunthaler, A., Menten, K. M., Reid, M. J., Hagiwara, Y., Mochizuki, N.
We performed astrometric observations with the VLBA of WB89-437, an H2O maser source in the Outer spiral arm of the Galaxy. We measure an annual parallax of 0.167 +/- 0.006 mas, corresponding to a...
Evidence for warped disks of young stars in the galactic center (2009)
Bartko, H., Martins, F., Fritz, T. K., Genzel, R., Levin, Y., Perets, H. B., ...
Distances to Galactic methanol masers (2008)
Rygl, K. L. J., Brunthaler, A., Menten, K. M., Reid, M. J., Van Langevelde, H. J.
We present the first EVN parallax measurements of 6.7 GHz methanol masers in star forming regions of the Galaxy. The 6.7 GHz methanol maser transition is a very valuable astrometric tool, for its...
The Megamaser Cosmology Project: I. VLBI observations of UGC 3789 (2008)
Reid, M. J., Braatz, J. A., Condon, J. J., Greenhill, L. J., Henkel, C., Lo, K. Y.
The Megamaser Cosmology Project (MCP) seeks to measure the Hubble Constant (Ho) in order to improve the extragalactic distance scale and constrain the nature of dark energy. We are searching for...
Evidence for Warped Disks of Young Stars in the Galactic Center (2008)
Bartko, H., Martins, F., Fritz, T. K., Genzel, R., Levin, Y., Perets, H. B., ...
The central parsec around the super-massive black hole in the Galactic Center hosts more than 100 young and massive stars. Outside the central cusp (R~1") the majority of these O and Wolf-Rayet (WR)...
Trigonometric Parallaxes of Massive Star Forming Regions: II. Cep A & NGC 7538 (2008)
Moscadelli, L., Reid, M. J., Menten, K. M., Brunthaler, A., Zheng, X. W., Xu, Y.
We report trigonometric parallaxes for the sources NGC 7538 and Cep A, corresponding to distances of 2.65 [+0.12/-0.11] kpc and 0.70 [+0.04/-0.04] kpc, respectively. The distance to NGC 7538 is...
Trigonometric Parallaxes of Massive Star Forming Regions: III. G59.7+0.1 and W 51 IRS2 (2008)
Xu, Y., Reid, M. J., Menten, K. M., Brunthaler, A., Zheng, X. W., Moscadelli, L.
We report trigonometric parallaxes for G59.7+0.1 and W 51 IRS2, corresponding to distances of 2.16^{+0.10}_{-0.09} kpc and 5.1^{+2.9}_{-1.4} kpc, respectively. The distance to G59.7+0.1 is smaller...
Trigonometric Parallaxes of Massive Star Forming Regions: IV. G35.20-0.74 and G35.20-1.74 (2008)
Zhang, B., Zheng, X. W., Reid, M. J., Menten, K. M., Xu, Y., Moscadelli, L., ...
We report trigonometric parallaxes for the high-mass star forming regions G35.20-0.74 and G35.20-1.74, corresponding to distances of 2.19 (+0.24 -0.20) kpc and 3.27 (+0.56 -0.42) kpc, respectively....
Trigonometric Parallaxes of Massive Star Forming Regions: V. G23.01-0.41 and G23.44-0.18 (2008)
Brunthaler, A., Reid, M. J., Menten, K. M., Zheng, X. W., Moscadelli, L., Xu, Y.
We report trigonometric parallaxes for the massive star-forming regions G23.01-0.41 and G23.44-0.18, corresponding to distances of 4.59 [+0.38/-0.33] kpc and 5.88 [+1.37/-0.93] kpc, respectively. The...
Trigonometric Parallaxes of Massive Star Forming Regions: I. S 252 & G232.6+1.0 (2008)
Reid, M. J., Menten, K. M., Brunthaler, A., Zheng, X. W., Moscadelli, L., Xu, Y.
We are conducting a large program with the NRAO Very Long Baseline Array (VLBA) to measure trigonometric parallaxes of massive star-forming regions across the Milky Way. Here we report measurement of...
Menten, K. M., Guesten, R., Leurini, S., Thorwirth, S., Henkel, C., Klein, B., ...
Using the Atacama Pathfinder Experiment (APEX) telescope we have detected the rotational ground-state transitions of ortho-ammonia and ortho-water toward the redshift ~0.89 absorbing galaxy in the...
The nature of the methanol maser ring G23.657-00.127 (2008)
Bartkiewicz, A., Brunthaler, A., Szymczak, M., Van Langevelde, H. J., Reid, M. J.
Methanol masers are associated with young high-mass stars and are an important tool for investigating the process of massive star formation. The recently discovered methanol maser ring in...
Discovery of an HI Counterpart to the Extended Tail of Mira (2008)
Matthews, L. D., Libert, Y., Gerard, E., Bertre, T. Le, Reid, M. J.
We report the detection of an HI counterpart to the extended, far-ultraviolet-emitting tail associated with the asymptotic giant branch star Mira (o Ceti). Using the Nancay Radio Telescope (NRT), we...
FG3: spatial and frequency modeling of circumstellar masers (2007)
F. Colomer, K. M. Menten, M. J. Reid
We have developed a computer program (called "FG3") that is useful to model images of spectral line emission. We have applied it successfully to the study of maser emission in the...
Menten, K. M., Lundgren, A., Belloche, A., Thorwirth, S., Reid, M. J.
Context: Maser emission from the H2O molecule probes the warm, inner circumstellar envelopes of oxygen-rich red giant and supergiant stars. Multi-maser transition studies can be used to put...
Humphreys, E. M. L., Reid, M. J., Greenhill, L. J., Moran, J. M., Argon, A. L.
We report measurements of centripetal accelerations of maser spectral components of NGC 4258 for 51 epochs spanning 1994 to 2004. This is the second paper of a series, in which the goal is...
The distance to the Orion Nebula (2007)
Menten, K. M., Reid, M. J., Forbrich, J., Brunthaler, A.
We have used the Very Long Baseline Array to measure the trigonometric parallax of several member stars of the Orion Nebula Cluster showing non-thermal radio emission. We have determined the distance...
Imaging the Radio Photospheres of Mira Variables (2007)
We have used the VLA at 43 GHz to image the radio continuum emission from o Ceti, R Leo, and W Hya and to precisely locate their SiO maser emission with respect to the star. The radio continuum...
Proper Motions in the Andromeda Subgroup (2007)
Brunthaler, A., Reid, M. J., Falcke, H., Henkel, C., Menten, K. M.
This article presents results of VLBI observations of regions of H2O maser activity in the Local Group galaxies M33 and IC10. Since all position measurements were made relative to extragalactic...
Redshifted formaldehyde from the gravitational lens B0218+357 (2007)
Jethava, N., Henkel, C., Menten, K. M., Carilli, C. L., Reid, M. J.
The gravitational lens toward B0218+357 offers the unique possibility to study cool moderately dense gas with high sensitivity and angular resolution in a cloud that existed half a Hubble time ago....
Matthews, L. D., Goddi, C., Greenhill, L. J., Chandler, C. J., Reid, M. J., Humphreys, E. M. L.
A comprehensive picture of high-mass star formation has remained elusive, in part because examples of high-mass YSOs tend to be relatively distant, deeply embedded, and confused with other emission...
Imaging the Ionized Disk of the High-Mass Protostar Orion-I (2007)
Reid, M. J., Menten, K. M., Greenhill, L. J., Chandler, C. J.
We have imaged the enigmatic radio source-I (Orion-I) in the Orion-KL nebula with the VLA at 43 GHz with 34 mas angular resolution. The continuum emission is highly elongated and is consistent with...
Argon, A. L., Greenhill, L. J., Reid, M. J., Moran, J. M., Humphreys, E. M. L.
We report a three year, 18 epoch, VLBI monitoring study of H2O masers in the sub-parsec, warped, accretion disk within the NGC4258 AGN. Our immediate goals are to trace the geometry of the underlying...
The Position of Sagittarius A*: III. Motion of the Stellar Cusp (2006)
Reid, M. J., Menten, K. M., Trippe, S., Ott, T., Genzel, R.
In the first two papers of this series, we determined the position of Sgr A* on infrared images, by aligning the positions of red giant stars with positions measured at radio wavelengths for their...
Towards a kinematic model of the Local Group (2006)
Brunthaler, A., Reid, M. J., Falcke, H., Henkel, C., Menten, K. M.
Measuring the proper motions and geometric distances of galaxies within the Local Group is very important for our understanding of the history, present state and future of the Local Group. Currently,...
The Proper Motion of the Local Group Galaxy IC 10 (2006)
Brunthaler, A., Reid, M. J., Falcke, H., Henkel, C., Menten, K. M.
We have measured the proper motion of the Local Group galaxy IC 10 with the Very Long Baseline Array by measuring the position of an H2O maser relative to two background quasars over 4.3 years. After...
Water masers in the Local Group of galaxies (2006)
Brunthaler, A., Henkel, C., Reid, M. J., Greenhill, L. J., Falcke, H.
We compare the number of detected 22 GHz H2O masers in the Local Group galaxies M31, M33, NGC6822, IC10, IC1613, DDO187, GR8, NGC185, and the Magellanic Clouds with the water maser population of the...
Search for Compact Extragalactic Radio Sources Near Massive Star Forming Regions (2006)
Xu, Y., Reid, M. J., Menten, K. M., Zheng, X. W.
We have used the Very Large Array to search for compact milliarcsecond-size radio sources near methanol masers in high-mass star-forming regions. Such sources are required for Very Long Baseline...
Radio continuum monitoring of the extreme carbon star IRC+10216 (2006)
Menten, K. M., Reid, M. J., Kruegel, E., Claussen, M. J., Sahai, R.
We describe Very Large Array observations of the extreme carbon star IRC+10216 at 8.4, 14.9, and 22.5 GHz made over a two year period. We find possible variability correlated with the infrared phase...
Submillimeter Array 440 µm/690 GHz line and continuum observations of Orion KL (2006)
Beuther, H., Zhang, Q., Reid, M. J., Hunter, T. R., Gurwell, M., Wilner, D., ...
Submillimeter Array observations of Orion KL at ~1" resolution in the 440 mum/690 GHz band reveal new insights about the continuum and line emission of the region. The 440 mum continuum flux density...
The Distance to the Perseus Spiral Arm in the Milky Way (2005)
Xu, Y., Reid, M. J., Zheng, X. W., Menten, K. M.
We have measured the distance to the massive star-forming region W3OH in the Perseus spiral arm of the Milky Way to be 1.95 $\pm$ 0.04 kilo-parsecs ($5.86\times10^{16}$ km). This distance was...
Water maser motions in W3(OH) and a determination of its distance (2005)
Hachisuka, K., Brunthaler, A., Menten, K. M., Reid, M. J., Imai, H., Hagiwara, Y., ...
We report phase-referencing VLBA observations of H2O masers near the star-forming region W3(OH) to measure their parallax and absolute proper motions. The measured annual parallax is 0.489 +/- 0.017...
First Detection of Millimeter/Submillimeter Extragalactic H2O Maser Emission (2005)
Humphreys, E. M. L., Greenhill, L. J., Reid, M. J., Beuther, H., Moran, J. M., Gurwell, M., ...
We report the first detection of an extragalactic millimeter wavelength H2O maser at 183 GHz towards NGC 3079 using the Submillimeter Array (SMA), and a tentative submillimeter wave detection of the...
Submillimeter Array 440$\mu$m/690GHz line and continuum observations of Orion-KL (2005)
Beuther, H., Zhang, Q., Reid, M. J., Hunter, T. R., Gurwell, M., Wilner, D., ...
Submillimeter Array observations of Orion-KL at 1'' resolution in the 440mu/690GHz band reveal new insights about the continuum and line emission of the region. The 440mu continuum flux density...
Henkel, C., Jethava, N., Kraus, A., Menten, K. M., Carilli, C. L., Grasshoff, M., ...
Using the Effelsberg 100-m telescope, absorption in the (J,K) = (1,1), (2,2) and (3,3) inversion lines of ammonia (NH_3) was detected at a redshift of z = 0.6847 toward the gravitational lens system...
Submm line imaging of Orion-KL with the Submillimeter Array (2005)
Beuther, H., Zhang, Q., Greenhill, L. J., Reid, M. J., Wilner, D., Keto, E., ...
We present the first submm (865mum) imaging spectral line survey at one arcsecond resolution conducted with the Submillimeter Array toward Orion-KL. Within the 2x2 GHz bandpasses (lower and upper...
The Geometric Distance and Proper Motion of the Triangulum Galaxy (M33) (2005)
Brunthaler, A., Reid, M. J., Falcke, H., Greenhill, L. J., Henkel, C.
We measured the angular rotation and proper motion of the Triangulum Galaxy (M33) with the Very Long Baseline Array by observing two H2O masers on opposite sides of the galaxy. By comparing the...
Radio Photosphere and Mass-Loss Envelope of VY CMa (2005)
Lipscy, S. J., Jura, M., Reid, M. J.
We have used the VLA to detect emission from the supergiant VY CMa at radio wavelengths and have constructed 3000-4500 K isothermal outer atmospheres constrained by the data. These models produce a...
The geometric distance and proper motion of the Triangulum Galaxy (M33) (2005)
Brunthaler, A., Reid, M. J., Falcke, H., Greenhill, L. J., Henkel, C.
The Proper Motion of Sgr A*: II. The Mass of Sgr A* (2004)
We report measurements with the VLBA of the position of Sgr A* with respect to two extragalactic radio sources over a period of eight years. The apparent proper motion of \sgrab relative to J1745-283...
The IC133 Water Vapor Maser in the Galaxy M33: A Geometric Distance (2004)
Argon, A. L., Greenhill, L. J., Moran, J. M., Reid, M. J., Menten, K. M., Inoue, M.
We report on the results of a 14 year long VLBI study of proper motions in the IC133 H2O maser source in the galaxy M33. The method of Ordered Motion Parallax was used to model the 3-dimensional...
The IC 133 water vapor maser in the galaxy M33 : a geometric distance (2004)
Argon, A. L., Greenhill, L. J., Moran, J. M., Reid, M. J., Menten, K. M., Inoue, M.
Atmosphere-Corrected Phase-Referencing (2003)
Brunthaler, A., Reid, M. J., Falcke, H.
One major problem of phase-referencing VLBI observations are phase errors due to the unknown tropospheric zenith delay at each antenna. These errors degrade the quality of the phase-referenced image...
The Most Detailed Picture Yet of an Embedded High-mass YSO (2003)
Greenhill, L. J., Reid, M. J., Chandler, C. J., Diamond, P. J., Elitzur, M.
High-mass star formation is not well understood chiefly because examples are deeply embedded, relatively distant, and crowded with sources of emission. Using VLA and VLBA observations of water and...
Recent Progress on a New Geometric Distance to NGC 4258 (2003)
Humphreys, E. M. L., Argon, A. L., Greenhill, L. J., Moran, J. M., Reid, M. J.
We report on our ongoing, high-resolution study of H2O masers in the innermost parsec of NGC 4258. Over thirty epochs of VLBA and VLA data, taken over six years, are being used to monitor the...
Dual Cometary HII Regions in DR21: Bow Shocks or Champagne Flows? (2003)
Cyganowski, C. J., Reid, M. J., Fish, V. L., Ho, P. T. P.
The DR 21 massive star forming region contains two cometary HII regions, aligned nearly perpendicular to each other on the sky. This offers a unique opportunity to discriminate among models of...
A Class of Interstellar OH Masers Associated with Protostellar Outflows (2003)
Argon, A. L., Reid, M. J., Menten, K. M.
Using the Very Large Array, we have detected weak OH maser emission near the Turner-Welch protostellar source in the W3 OH region. Unlike typical interstellar OH masers, which are associated with...
The Position, Motion, and Mass of Sgr A* (2003)
Reid, M. J., Menten, K. M., Genzel, R., Ott, T., Schoedel, R., Eckart, A., ...
We report progress on measuring the position of Sgr A* on infrared images, placing limits on the motion of the central star cluster relative to Sgr A*, and measuring the proper motionof Sgr A*...
A class of interstellar OH masers associated with protostellar outflows (2003)
Argon, A. L., Reid, M. J., Menten, K. M.
Using the Very Large Array, we have detected weak OH maser emission near the Turner-Welch protostellar source in the W3 OH region. Unlike typical interstellar OH masers, which are associated with...
The position, motion, and mass of SgrA* (2003)
Reid, M. J., Menten, K. M., Genzel, R., Ott, T., Schödel, R., Brunthaler, A.
Moscadelli, L., Menten, K. M., Walmsley, C. M., Reid, M. J.
This paper reports on the results of high velocity resolution (0.02 km s(-1)) VLBA observations of the 12 GHz methanol masers toward the ultracompact (UC) H II region W3(OH). About 50 maser features...
Interstellar hydroxyl masers in the Galaxy. II. Zeeman pairs and the galactic magnetic field (2003)
Fish, V. L., Reid, M. J., Argon, A. L., Menten, K. M.
We have identified and classified Zeeman pairs in the survey by Argon, Reid, & Menten of massive star-forming regions with 18 cm ((II3/2)-I-2; J=3/2) OH maser emission. We have found a total of more...
Reid, M. J., Menten, K. M., Genzel, R., Ott, T., Schödel, R., Eckart, A.
In 1979, Menten and coworkers accurately determined the position of Sgr A* on an infrared image by aligning the infrared image with positions measured for SiO masers, associated with infrared-bright...
II. Accurate Positions and Proper Motions of Stellar SiO Masers near the Galactic Center (2002)
Reid, M. J., Menten, K. M., Genzel, R., Ott, T., Schoedel, R., Eckart, A.
Menten, Reid, Eckart and Genzel (1997) accurately determined the position of Sgr A* on an infrared image, by aligning the infrared image with positions measured for SiO masers, associated with...
Closest Star Seen Orbiting the Supermassive Black Hole at the Centre of the Milky Way (2002)
Schodel, R., Ott, T., Genzel, R., Hofmann, R., Lehnert, M., Eckart, A., ...
Measurements of stellar velocities and variable X-ray emission near the centre of the Milky Way have provided the strongest evidence so far that the dark mass concentrations seen in many galactic...
H2O Masers and Supersonic Turbulence (2002)
Strelnitski, V., Alexander, J., Gezari, S., Holder, B. P., Moran, J. M., Reid, M. J.
We use unpublished and published VLBI results to investigate the geometry and the statistical properties of the velocity field traced by H2O masers in five galactic regions of star formation -- Sgr...
Argon, A. L., Reid, M. J., Menten, K. M.
Full-polarization spectral-line VLBA observations were made of the ground state, main-line, (2)Pi(3/2) J = 3/2 OH masers in two Galactic star-forming regions: the "el"/"e2" region of W51 and...
Zeeman splitting of OH masers and the galactic magnetic field (2002)
Fish, V. L., Reid, M. J., Argon, A. L., Menten, K. M.
Zeeman measurements of OH masers are used to probe the magnetic field around regions of massive star formation. Previous observations suggested that OH maser field directions were aligned in a...
Kinematics of the 12 GHz methanol masers toward W3(OH) (2002)
Moscadelli, L., Menten, K. M., Walmsley, C. M., Reid, M. J.
In this paper, two epochs (1994 February and 1998 December) of Very Long Baseline Array observations of the 12 GHz CH3OH masers toward the ultracompact (UC) H II region W3(OH) are compared. The 12...
A star in a 15.2-year orbit around the supermassive black hole at the centre of the Milky Way (2002)
Schödel, R., Ott, T., Genzel, R., Hofmann, R., Lehnert, M., Eckart, A., ...
Many galaxies are thought to have supermassive black holes at their centres(1)-more than a million times the mass of the Sun. Measurements of stellar velocities(2-7) and the discovery of variable...
A star in a 15.2-year orbit around the supermassive black hole at the centre of the Milky Way (2002)
Schödel, R., Ott, T., Genzel, R., Hofmann, R., Lehnert, M., Eckart, A., ...
Many galaxies are thought to have supermassive black holes at their centres(1)-more than a million times the mass of the Sun. Measurements of stellar velocities(2-7) and the discovery of variable...
A star in a 15.2-year orbit around the supermassive black hole at the centre of the Milky Way (2002)
Schödel, R., Ott, T., Genzel, R., Hofmann, R., Lehnert, M., Eckart, A., ...
How Mira Variables Change Visual Light by a Thousand-fold (2001)
Mira variables change visual light by up to 8 magnitudes over their roughly yearly cycle. Here we present a simple explanation for the extremely large amplitudes of light curves of oxygen-rich Mira...
Wine-related lifestyle segmentation of the Australian domestic wine market (2001)
Bruwer, Johan, Li, E., Reid, M. J.
The enormous growth of the Australian wine industry in the 1990s relied strongly on the export market, whereas domestic markets remained relatively stagnant. The study with 272 subjects in Adelaide...
Wine-related lifestyle segmentation of the Australian domestic wine market (2001)
Bruwer, Johan, Li, E., Reid, M. J.
The enormous growth of the Australian wine industry in the 1990s relied strongly on the export market, whereas domestic markets remained relatively stagnant. The study with 272 subjects in Adelaide...
The Proper Motion of SgrA*: I. First VLBA Results (1999)
Reid, M. J., Readhead, A. C. S., Vermeulen, R. C., Treuhaft, R. N.
We observed Sgr A* and two extragalactic radio sources nearby in angle with the VLBA over a period of two years and measured relative positions with an accuracy approaching 0.1 mas. The apparent...
Imaging the z=0.9 Absorbing Cloud toward 1830-211 (1998)
Carilli, C. L., Menten, K. M., Reid, M. J., Rupen, M., Claussen, M.
We present spectroscopic imaging observations of the molecular and HI 21cm absorbing cloud at z = 0.885 toward the `Einstein ring' radio source PKS 1830-211. We derive a cloud size between 10 h^{-1}...
Redshifted Neutral Hydrogen 21cm Absorption toward Red Quasars (1997)
Carilli, C. L., Menten, K. M., Reid, M. J., Rupen, M. P., Yun, M. S.
We have searched for redshifted neutral hydrogen 21cm absorption toward sources from the Stickel et al. `red quasar' sub-sample. Five of these red quasars have been searched for redshifted HI 21cm...