295 citations · 2.5k across the 82 of their papers we have counts for
43 papers · 1 filter
Spurious source generation in mapping from noisy phase-self-calibrated data
I. Marti-Vidal, J. M. Marcaide
Phase self-calibration (or selfcal) is an algorithm often used in the calibration of interferometric observations in astronomy. Although a powerful tool, this algorithm presents st…
Absolute kinematics of radio source components in the complete S5 polar cap sample. III. First wide-field high-precision astrometry at 15.4 GHz
I. Marti-Vidal, J. M. Marcaide, J. C. Guirado +2
We report on the first wide-field, high-precision astrometric analysis of the 13 extragalactic radio sources of the complete S5 polar cap sample at 15.4 GHz. We describe new algori…
Long Term Radio Monitoring of SN 1993J
Kurt W. Weiler, Christopher L. Williams, Nino Panagia +5
We present our observations of the radio emission from supernova (SN) 1993J, in M 81 (NGC 3031), made with the VLA, from 90 to 0.7 cm, as well as numerous measurements from other t…
Recent Type II Radio Supernovae
Christopher J. Stockdale, Matthew T. Kelley, Kurt W. Weiler +5
We present the results of radio observations, taken primarily with the Very Large Array, of Supernovae 1993J, 2001gd, 2001em, 2002hh, 2004dj, and 2004et. We have fit a parameterize…
Light Curves of Radio Supernovae
Matthew T. Kelley, Christopher J. Stockdale, Kurt W. Weiler +5
We present the results from the on-going radio monitoring of recent type II supernovae (SNe), including SNe 2004et, 2004dj, 2002hh, 2001em, and 2001gd. Using the Very Large Array t…
8.4GHz VLBI observations of SN2004et in NGC6946
I. Marti-Vidal, J. M. Marcaide, A. Alberdi +13
We report on 8.4GHz Very Long Baseline Interferometry (VLBI) observations of the type II-P supernova SN2004et in the spiral galaxy NGC 6946, made on 20 February 2005 (151 days afte…
On the dynamics of the ABDoradus system
J. C. Guirado, I. Marti-Vidal, J. M. Marcaide +8
We present an astrometric analysis of the binary systems ABDorA /ABDorC and ABDorBa / ABDorBb. These two systems of well-known late-type stars are gravitationally associated and th…
High-resolution observations of SN 2001gd in NGC 5033
Miguel A. Perez-Torres, A. Alberdi, J. M. Marcaide +8
We report on 8.4 GHz VLBI observations of SN2001gd in the spiral galaxy NGC5033 made on 26 June 2002 and 8 April 2003. Our data nominally suggests a relatively strong deceleration…
Monitoring of the prompt radio emission from the unusual supernova 2004dj in NGC2403
R. J. Beswick, T. W. B. Muxlow, M. K. Argo +3
Supernova 2004dj in the nearby spiral galaxy NGC2403 was detected optically in July 2004. Peaking at a magnitude of 11.2, this is the brightest supernova detected for several years…
Multi-wavelength differential astrometry of the S5 polar cap sample
J. C. Guirado, J. M. Marcaide, E. Ros +2
We report on the status of our S5 polar cap astrometry program. Since 1997 we have observed all the 13 radio sources of the complete S5 polar cap sample at the wavelengths of 3.6 c…
Absolute kinematics of radio source components in the complete S5 polar cap sample
M. A. Perez-Torres, J. M. Marcaide, J. C. Guirado +1
We observed the thirteen extragalactic radio sources of the complete S5 polar cap sample at 15.4 GHz with the Very Long Baseline Array, on 27 July 1999 (1999.57) and 15 June 2000 (…
A new sample of large angular size radio galaxies. III. Statistics and evolution of the grown population
L. Lara, G. Giovannini, W. D. Cotton +4
We present in this paper a detailed study of a new sample of large angular size FR I and FR II radio galaxies and compare the properties of the two classes. As expected, a pure mor…
High-resolution radio imaging of young supernovae
M. A. Perez-Torres, J. M. Marcaide, A. Alberdi +12
The high resolution obtained through the use of VLBI gives an unique opportunity to directly observe the interaction of an expanding radio supernova with its surrounding medium. We…
Radio Emission from SN 2001gd in NGC 5033
Christopher J. Stockdale, Kurt W. Weiler, Schuyler D. Van Dyk +5
We present the results of monitoring the radio emission from the Type IIb supernova SN 2001gd between 2002 February 8 and 2002 October 28. Most of the data were obtained using the…
Searching for low mass objects around nearby dMe radio stars
J. C. Guirado, E. Ros, D. L. Jones +3
Nearby M-dwarfs are best suited for searches of low mass companions. VLBI phase-referencing observations with sensitive telescopes are able to detect radio star flux-densities of t…
How is really decelerating the expansion of SN1993J?
J. M. Marcaide, A. Alberdi, M. A. Perez-Torres +14
SN1993J is to date the radio supernova whose evolution has been monitored in greatest detail and the one which holds best promise for a comprehensive theoretical-observational anal…
The Late-Time Radio Spectrum of SN1993J
M. A. Perez-Torres, A. Alberdi, J. M. Marcaide
We present VLA radio continuum measurements of SN1993J in M81 at the frequencies of 0.32 (P-band), 1.3 and 1.7 (L-band), 4.9 (C-band), 8.5 (X-band), and 14.9 (U-band) GHz carried o…
A distorted radio shell in the young supernova SN1986J
M. A. Perez-Torres, A. Alberdi, J. M. Marcaide +5
We report here on 5 GHz global very-long-baseline interferometry (VLBI) observations of SN 1986J, 16 yr after its explosion. We obtained a high-resolution image of the supernova, w…
Strongly decelerated expansion of SN1979C
J. M. Marcaide, M. A. Perez-Torres, E. Ros +6
We observed SN1979C in M100 on 4 June 1999, about twenty years after explosion, with a very sensitive four-antenna VLBI array at the wavelength of 18cm. The distance to M100 and th…
A new sample of large angular size radio galaxies. II. The optical data
L. Lara, I. Marquez, W. D. Cotton +4
We constructed and presented in the first paper of this series a new sample of 84 large angular size radio galaxies by selecting from the NRAO VLA Sky Survey objects with angular s…
Absolute kinematics of radio source components in the complete S5 polar cap sample I. First and second epoch maps at 8.4 GHz
E. Ros, J. M. Marcaide, J. C. Guirado +1
We observed the thirteen extragalactic radio sources of the S5 polar cap sample at 8.4 GHz with the Very Long Baseline Array, on 1997.93 and 1999.41. We present the maps from those…
The role of synchrotron self-absorption in the late radio emission of SN1993J
M. A. Perez-Torres, A. Alberdi, J. M. Marcaide
The standard model for radio supernovae considers that the observed synchrotron radio emission arises from the high-energy shell that results from the strong interaction between th…
A new sample of large angular size radio galaxies. I. The radio data
L. Lara, W. D. Cotton, L. Feretti +4
We present a new sample of 84 large angular size radio galaxies selected from the NRAO VLA Sky Survey. Radio sources with declination above +60 degrees, total flux density greater…
Variability and polarization in the inner jet of 3C395
L. Lara, A. Alberdi, J. M. Marcaide
We present new results on the parsec-scale jet of the quasar 3C395, derived from VLBI polarization sensitive observations made in 1995.91 and 1998.50 at 8.4, 15.4 and 22.2 GHz. The…