DAOSPEC: an automatic code for measuring equivalent widths in high-resolution stellar spectra

DAOSPEC is a Fortran code for measuring equivalent widths of absorption lines in stellar spectra with minimal human involvement. It works with standard FITS format files and it is designed for use with high resolution (R>15000) and high signal-to-noise-ratio (S/N>30) spectra that have been binned on a linear wavelength scale. First, we review the analysis procedures that are usually employed in the literature. Next, we discuss the principles underlying DAOSPEC and point out similarities and differences with respect to conventional measurement techniques. Then experiments with artificial and real spectra are discussed to illustrate the capabilities and limitations of DAOSPEC, with special attention given to the issues of continuum placement; radial velocities; and the effects of strong lines and line crowding. Finally, quantitative comparisons with other codes and with results from the literature are also presented.Comment: You can find the DAOSPEC manual at http://www.bo.astro.it/~pancino/docs/daospec.pd

Molecular excitation in the Interstellar Medium: recent advances in collisional, radiative and chemical processes

We review the different excitation processes in the interstellar mediumComment: Accepted in Chem. Re

The 2015 edition of the GEISA spectroscopic database

The GEISA database (Gestion et Etude des Informations Spectroscopiques Atmosphériques: Management and Study of Atmospheric Spectroscopic Information) has been developed and maintained by the ARA/ABC(t) group at LMD since 1974. GEISA is constantly evolving, taking into account the best available spectroscopic data. This paper presents the 2015 release of GEISA (GEISA-2015), which updates the last edition of 2011 and celebrates the 40th anniversary of the database. Significant updates and additions have been implemented in the three following independent databases of GEISA. The “line parameters database” contains 52 molecular species (118 isotopologues) and transitions in the spectral range from 10−6 to 35,877.031 cm−1, representing 5,067,351 entries, against 3,794,297 in GEISA-2011. Among the previously existing molecules, 20 molecular species have been updated. A new molecule (SO3) has been added. HDO, isotopologue of H2O, is now identified as an independent molecular species. Seven new isotopologues have been added to the GEISA-2015 database. The “cross section sub-database” has been enriched by the addition of 43 new molecular species in its infrared part, 4 molecules (ethane, propane, acetone, acetonitrile) are also updated; they represent 3% of the update. A new section is added, in the near-infrared spectral region, involving 7 molecular species: CH3CN, CH3I, CH3O2, H2CO, HO2, HONO, NH3. The “microphysical and optical properties of atmospheric aerosols sub-database” has been updated for the first time since 2003. It contains more than 40 species originating from NCAR and 20 from the ARIA archive of Oxford University. As for the previous versions, this new release of GEISA and associated management software facilities are implemented and freely accessible on the AERIS/ESPRI atmospheric chemistry data center website

The 2009 edition of the GEISA spectroscopic database

The updated 2009 edition of the spectroscopic database GEISA (Gestionet Etudedes Informations Spectroscopiques Atmospheriques ; Management and Study of Atmospheric Spectroscopic Information) is described in this paper. GEISA is a computer-accessible system comprising three independent sub-databases devoted, respectively, to: line parameters, infrared and ultraviolet/visible absorption cross-sections, microphysical and optical properties of atmospheric aerosols. In this edition, 50 molecules are involved in the line parameters sub-database, including 111 isotopologues, for a total of 3,807,997 entries, in the spectral range from 10-6 to 35,877.031cm-1. GEISA, continuously developed and maintained at LMD (Laboratoirede Meteorologie Dynamique, France) since 1976, is implemented on the IPSL/CNRS(France) ‘‘Ether’’ Products and Services Centre WEB site (http://ether.ipsl.jussieu.fr), where all archived spectroscopic data can be handled through general and user friendly associated managements of software facilities. More than 350 researchers are registered for online use of GEISA

De la cartographie de la végétation à la naissance d'un cru : le «Côtes de la Malepère» (Aude)

The renewal of the Malepère vineyards. The present renewal of the Malepère vineyards, west of Carcassonne, is based upon studies of the bioclimatic data, the soils and the phytogeographical environment. The carignan, a traditional Mediterranean type of vine stock is replaced by other stocks which are more suited to the ecological heterogeneousness of the Malepère hills which lie in bewteen the mediterranean Languedoc and the sub-atlantic Lauragais The patchwork of the « terroirs » — a « terroir » being a combination of a soil, a bio-climate and a vine stock — is now scientifically mapped ; and the vineyards now give quality wines The Malepère experiment can ben considered as a technical success from both wine growing and cenological points of view ; considering that it induced definite socio-economical success, it is recommended that its method should be extended to other districts or cultivations.Sur la base d'études bioclimatiques pédologiques et phytogéographiques la rénovation du vignoble de la Malepère (Aude) est en cours. Le carignan, cépage méditerranéen traditionnel, est remplacé par des cépages adaptés à l'hétérogénéité écologique de cette région de transition entre le Languedoc méditerraéen et le Lauragais plus atlantique. La mosaïque de terroirs — un terroir = un sol + un bioclimat + un cépage — définie scientifiquement, produit désormais des vins de qualité. L'application à d'autres régions et à d'autres cultures de la méthode utilisée ici est justifiée par la réussite socio-économique qui a suivi les réussites techniques (viticoles et œnologiques) .Renovación del viñedo de la Malepère. Respaldada en estudios bioclimáticos, pedológicos y fitogeográficos, está en curso de realización la renovación de viñedo de Malepère (Aude). Al «carinan», cepa mediterránea tradicional, se va sustituyendo cepas adaptadas a la heterogeneidad ecológica de esta comarca de transición entre el Languedoc mediterráneo y el Lauragais más atlántico. El mosaico de « tierras » (una tierra, un suelo, una cepa), analizado científicamente, produce ahora vinos de calidad. El éxito socioeconómico que resultó de los éxitos técnicos (vitícolas y enológicos) justifica la aplicación del mismo método a otras regiones y otros cultivos.Astruc H., Calmet J., Delpoux Marcel, Guitard R., Jacquinet J.-C., Vilotte C. De la cartographie de la végétation à la naissance d'un cru : le «Côtes de la Malepère» (Aude). In: Revue géographique des Pyrénées et du Sud-Ouest, tome 58, fascicule 3, 1987. Toulouse : les hommes, leur table. pp. 259-273