3 papers
astro-ph2007
Searching for the Precursors of Life in External Galaxies
B. Lawton, C. W. Churchill, B. A. York +5
Are the organic molecules crucial for life on Earth abundant in early-epoch galaxies? To address this, we searched for organic molecules in extragalactic sources via their absorpti…
astro-ph2003
The Local Group Census: planetary nebulae in IC 10, Leo A and Sextans A
L. Magrini, R. L. M. Corradi, R. Greimel +8
In the framework of our narrow-band survey of the Local Group galaxies, we present the results of the search for planetary nebulae (PNe) in the dwarf irregular galaxies IC10, LeoA…
astro-ph2003
Decline of the space density of quasars between z=2 and z=4
M. Vigotti, R. Carballo, C. R. Benn +5
We define a new complete sample of 13 optically-luminous radio quasars M_AB(1450 Angstrom) < -26.9 mag and log P_1.4 GHz(W/Hz) > 25.7 with redshift 3.8 < z < 4.5, obtained by cross…