NASA's OSIRIS-REx and JAXA's Hayabusa2 sample-return missions are currently on their way to encounter primitive near-Earth asteroids (101955) Bennu and (162173) Ryugu, respectively. Spectral and dynamical evidence indicates that these near-Earth asteroids originated in the inner part of the main belt. There are several primitive collisional
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Expected spectral characteristics of (101955) Bennu and (162173) Ryugu, targets of the OSIRIS-REx and Hayabusa2 missionsde León, J. et al.102018
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EXPORT: Spectral classification and projected rotational velocities of Vega-type and pre-main sequence stars
In this paper we present the first comprehensive results extracted from the spectroscopic campaigns carried out by the EXPORT (EXoPlanetary Observational Research Team) consortium. During 1998-1999, EXPORT carried out an intensive observational effort in the framework of the origin and evolution of protoplanetary systems in order to obtain clues on
Mora, A. et al.Fecha de publicación:
102001 -
Extended nonnuclear infrared emission from Seyfert galaxies
The IRAS observations of well-known Seyfert galaxies have been studied in comparison with previously published ultraviolet and mid-infrared data. The mid- and far-infrared emission from Seyfert galaxies has an important extended component. Moreover, the UV-optical continuum is insufficient to account for the far-infrared emission via dust
Rodriguez-Espinosa, J. M. et al.Fecha de publicación:
101986 -
Extended UV (XUV) Emission in Nearby Galaxy Disks
We summarize the main properties of the extended UV (XUV) emission found in roughly 30% of the nearby spiral galaxies observed by the GALEX satellite. Two different classes of XUV disks are identified, the Type 1 XUV disks where significant, structured UV-bright features are found beyond the classical azimuthally-averaged star-formation threshold
Gil de Paz, A. et al.Fecha de publicación:
102008 -
Extinction corrections in ground based infrared spectrometry
Calculations of atmospheric transmission through the M (5 microns) atmospheric window, at a resolution of 10 to the 3rd power are presented for sites at the Observatorio del Teide, Tenerife and the NHO, La Plama in the Canary Islands. We use a standard midlatitude atmospheric model and absorption line strengths for the known molecular species
Mountain, C. M. et al.Fecha de publicación:
101982 -
Extragalactic Globular Clusters: Old Spectroscopic Ages and New Views on Their Formation
We present the results of a meta-analysis of Keck spectra of extragalactic globular clusters (GCs) in a sample of eight galaxies, ranging from dwarf galaxies to massive elliptical galaxies. We infer ages for the metal-poor and metal-rich GCs in these galaxies through comparisons to Galactic GCs. Both subpopulations appear to be no younger than
Strader, Jay et al.Fecha de publicación:
102005