4 citations · 6 across the 4 of their papers we have counts for
6 papers · 1 filter
Quasar 3C298: a test-case for meteoritic nanodiamond 3.5 microns emission
J. A. de Diego, L. Binette, P. Ogle +3
We calculate the dust emission expected at 3.43 and 3.53 microns if meteoritic (i.e. hydrogenated) nanodiamonds are responsible for most of the far-UV break observed in quasars. We…
Physical parameters and classification of eight galactic nuclei from the Second Byurakan Survey
Jose A. de Diego
Spectroscopic observations with a resolution of 4.5 Angst were performed for a sample of eight galactic nuclei extracted from the Second Byurakan Survey, and one companion galaxy o…
Dust and the far-UV spectral energy distribution of quasars
Luc Binette, Yair Krongold, Gladis Magris Crestini +1
The spectral energy distribution of quasars shows a sharp steepening of the continuum shortward of ~ 1100 A. We present a new dust extinction model consisting of crystalline carbon…
Pioneer anomaly? Gravitational pull due to the Kuiper belt
Jose A. de Diego, Dario Nunez, Jesus Zavala
In this work we study the gravitational influence of the material extending from Uranus orbit to the Kuiper belt and beyond on objects moving within these regions. We conclude that…
Optical variability of PKS 0736+017
A. Ramirez, J. A. de Diego, D. Dultzin-Hacyan +1
We present BVR photometric observations of the blazar PKS 0736+017. These observations were carried out with three telescopes in Mexico and two in Spain between December 1998 and A…
A Multiwavelength study of NLS1s galaxies from the Second Byurakan Survey
J. A. Stepanian, E. Benitez, Y. Krongold +6
In this work we present a multiwavelength study of narrow-line Seyfert 1 galaxies (NLS1s) discovered in the Second Byurakan Survey (SBS). The sample consists of 26 objects, which h…