P. Francois

A new view of the dwarf spheroidal satellites of the Milky Way from VLT/FLAMES: Where are the very metal poor stars? (2006)

Helmi, Amina, Irwin, M. J., Tolstoy, E., Battaglia, G., Hill, V., Jablonka, P., ...

As part of the Dwarf galaxies Abundances and Radial-velocities Team (DART) program, we have measured the metallicities of a large sample of stars in four nearby dwarf spheroidal galaxies (dSph's):...

First stars VII. Lithium in extremely metal poor dwarfs (2006)

Bonifacio, P., Molaro, P., Sivarani, T., Cayrel, R., Spite, M., Spite, F., ...

Aims. This study aims to determine the level and constancy of the Spite plateau as definitively as possible from homogeneous high-quality VLT-UVES spectra of 19 of the most metal-poor dwarf stars...

Abundance gradients in the Milky Way for alpha elements, Iron peak elements, Barium, Lanthanum and Europium (2006)

Cescutti, G., Matteucci, F., Francois, P., Chiappini, C.

We model the abundance gradients in the disk of the Milky Way for several chemical elements (O, Mg, Si, S, Ca, Sc, Ti, Co, V, Fe, Ni, Zn, Cu, Mn, Cr, Ba, La and Eu), and compare our results with the...

The DART imaging and CaT survey of the Fornax Dwarf Spheroidal Galaxy (2006)

Battaglia, G., Tolstoy, E., Helmi, A., Irwin, M. J., Letarte, B., Jablonka, P., ...

As part of the DART project we have used the ESO/2.2m Wide Field Imager in conjunction with the VLT/FLAMES GIRAFFE spectrograph to study the detailed properties of the resolved stellar population of...

Planetary nebulae in the magellanic clouds (2006)

P. Leisy, M. Dennefeld, P. Francois

Planetary nebulae in the magellanic clouds

First stars IX -Mixing in extremely metal-poor giants. Variation of the 12C/13C, [Na/Mg] and [Al/Mg] ratios (2006)

Spite, M., Cayrel, R., Hill, V., Spite, F., Francois, P., Plez, B., ...

Extremely metal-poor (EMP) stars preserve a fossil record of the composition of the ISM when the Galaxy formed. It is crucial, however, to verify whether internal mixing has modified their surface....

First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy (2005)

Cayrel, R., Depagne, E., Spite, M., Hill, V., Spite, F., Francois, P., ...

In the framework of an ESO Large Programme high quality spectra of 70 very metal-poor dwarfs and giants were obtained with the VLT-UVES combination. This paper reports the detailed analyses of the 35...

Near-UV to near-IR disk-averaged Earth's reflectance spectra (2005)

Hamdani, S., Arnold, L., Foellmi, C., Berthier, J., Briot, D., Francois, P., ...

We report 320 to 1020nm disk-averaged Earth reflectance spectra obtained from Moon's Earthshine observations with the EMMI spectrograph on the NTT at ESO La Silla (Chile). The spectral signatures of...

The Chemical Composition of Cepheids in the Milky Way and the Magellanic Clouds (2005)

Mottini, M., Romaniello, M., Primas, F., Bono, G., Groenewegen, M. A. T., Francois, P.

We have measured the elemental abundances of 68 Galactic and Magellanic Cepheids from FEROS and UVES high-resolution and high signal-to-noise spectra in order to establish the influence of the...

The Metallicity Dependence of the Cepheid Period-Luminosity Relation (2005)

Romaniello, M., Mottini, M., Primas, F., Groenewegen, M., Bono, G., Francois, P.

We have assessed the influence of the stellar iron content on the Cepheid Period-Luminosity (PL) relation by relating the V band residuals from the Freedman et al (2001) PL relation to [Fe/H] for 68...

The chemical evolution of Barium and Europium in the Milky Way (2005)

Cescutti, G., Francois, P., Matteucci, F., Cayrel, R., Spite, M.

We compute the evolution of the abundances of barium and europium in the Milky Way and we compare our results with the observed abundances from the recent UVES Large Program "First Stars". We use a...

Near-UV to near-IR disk-averaged Earth's spectra from Moon's Earthshine observations (2005)

Hamdani, S., Arnold, L., Foellmi, C., Berthier, J., Briot, D., Francois, P., ...

We discuss a series of Earthshine spectra obtained with the NTT/EMMI instrument between 320nm and 1020nm with a resolution of R~450 in the blue and R~250 in the red. These ascending and descending...

The Carina dSph galaxy: where is the edge? (2005)

Bono, G., Monelli, M., Walker, A. R., Munteanu, A., Buonanno, R., Caputo, F., ...

Recent cosmological N-body simulations suggest that current empirical estimates of tidal radii in dSphs might be underestimated by at least one order of magnitude. To constrain the plausibility of...

Sulphur abundance in Galactic stars (2005)

Caffau, E., Bonifacio, P., Faraggiana, R., Francois, P., Gratton, R. G., Barbieri, M.

We investigate sulphur abundance in 74 Galactic stars by using high resolution spectra obtained at ESO VLT and NTT telescopes. For the first time the abundances are derived, where possible, from...

Li in NGC 6752 and the formation of globular clusters (2005)

Pasquini, L., Bonifacio, P., Molaro, P., Francois, P., Spite, F., Gratton, R. G., ...

Li abundances for 9 Turnoff (TO) stars of the intermediate metallicity cluster ([Fe/H]=-1.4) NGC6752 are presented. The cluster is known to show abundance anomalies and anticorrelations observed in...

Investigating social capital: Comparative perspectives on civil society, participation and governance (2005)

Trust, social capital and economic development (2005)

Commons as insurance and the welfare impact of privatization (2005)

Baland, J-M., Francois, P.

Near-UV to near-IR disk-averaged Earth\'s spectra from Moon\'s Earthshine observations (2005)

Hamdani, S., Arnold, L., Foellmi, C., Berthier, J., Briot, D., Francois, P., ...

We discuss a series of Earthshine spectra obtained with the NTT/EMMI instrument between 320nm and 1020nm with a resolution of R~450 in the blue and R~250 in the red. These ascending and descending...

Near-UV to near-IR disk-averaged Earth\'s spectra from Moon\'s Earthshine observations (2005)

Hamdani, S., Arnold, L., Foellmi, C., Berthier, J., Briot, D., Francois, P., ...

We discuss a series of Earthshine spectra obtained with the NTT/EMMI instrument between 320nm and 1020nm with a resolution of R~450 in the blue and R~250 in the red. These ascending and descending...

Demographic effects on the use of vertical sources of guidance by managers in widely differing cultural contexts (2005)

Smith, P. B., Peterson, M.F., Ahmad, A. H., Akande, D., Andersen, J.A., Ayestaran, S., ...

Demographic effects on the use of vertical sources of guidance by managers in widely differing cultural contexts (2005)

Smith, P. B., Peterson, M.F., Ahmad, A. H., Akande, D., Andersen, J.A., Ayestaran, S., ...

The influence of chemical composition on the properties of Cepheid stars I - Period-Luminosity relation vs iron abundance (2004)

Romaniello, M., Primas, F., Mottini, M., Groenewegen, M., Bono, G., Francois, P.

We have assessed the influence of the stellar iron content on the Cepheid Period-Luminosity (PL) relation by relating the V band residuals from the Freedman et al (2001) PL relation to [Fe/H] for 37...

Two distinct ancient components in the Sculptor Dwarf Spheroidal Galaxy: First Results from DART (2004)

Tolstoy, Eline, Irwin, M. J., Helmi, A., Battaglia, G., Jablonka, P., Hill, V., ...

We have found evidence for the presence of two distinct ancient stellar components (both geq 10 Gyr old) in the Sculptor dwarf spheroidal galaxy. We used the ESO Wide Field Imager (WFI) in...

Heavy elements and chemical enrichment in globular clusters (2004)

James, G., Francois, P., Bonifacio, P., Carretta, E., Gratton, R. G., Spite, F.

High resolution (R > 40 000) and high S/N spectra have been acquired with UVES on the VLT-Kueyen (Paranal Observatory, ESO Chile) for several main sequence turnoff stars (V ~ 17 mag) and subgiants at...

EB-PVD processing of pyrochlore-structured La2Zr2O7-based TBCs (2004)

Saruhan, B., Francois, P., Fritscher, K., Schulz, U.

Two Distinct Ancient Components in the Sculptor Dwarf Spheroidal Galaxy: First Results from the Dwarf Abundances and Radial Velocities Team (2004)

Tolstoy, E, Irwin, MJ, Helmi, A, Battaglia, G, Jablonka, P, Hill, V, ...

Heavy elements abundances in turn-off stars and early subgiants in NGC 6752 (2003)

James, G., Francois, P., Bonifacio, P., Bragaglia, A., Carretta, E., Centurion, M., ...

High resolution spectra (R > 40 000) for 9 main sequence turn-off stars and 9 subgiants in the globular cluster NGC 6752 were acquired with UVES on the VLT-Kueyen (UT2). These data have been used to...

First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy (2003)

Cayrel, R., Depagne, E., Spite, M., Hill, V., Spite, F., Francois, P., ...

In the framework of an ESO Large Programme high quality spectra of 70 very metal-poor dwarfs and giants were obtained with the VLT-UVES combination. This paper reports the detailed analyses of the 35...

First stars IV.CS 29497-030: Evidence for operation of the s-process at very low metallicity (2003)

Sivarani, T., Bonifacio, P., Molaro, P., Cayrel, R., Spite, M., Spite, F., ...

We present an abundance analysis of the very metal-poor, carbon-enhanced star CS 29497-030. Our results indicate that this unusually hot turnoff star (Teff = 6650K, log g = 3.5) has a metallicity...

Trust, social capital and economic development (2003)

Relationships, commitment and labour productivity growth (2003)

Many argue that elements of a society s norms, culture or social capital are central to understanding its development. However, these notions have been difficult to capture in economic models. Here...

Not-for-profit provision of public services (2003)

Contracting productivity growth (2003)

Co-movement, capital and contracts: 'normal' cycles through creative destruction (2003)

Animal spirits through creative destruction (2003)

We develop a unified theory of endogenous business cycles in which expansions are neoclassical growth periods driven by productivity improvements and capital accumulation, while downturns are the...

First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy (2003)

Cayrel, R., Depagne, E., Spite, M., Hill, V., Spite, F., Francois, P., ...

In the framework of an ESO Large Programme high quality spectra of 70 very metal-poor dwarfs and giants were obtained with the VLT-UVES combination. This paper reports the detailed analyses of the 35...

First stars V - Abundance patterns from C to Zn and supernova yields in the early Galaxy (2003)

Cayrel, R., Depagne, E., Spite, M., Hill, V., Spite, F., Francois, P., ...

In the framework of an ESO Large Programme high quality spectra of 70 very metal-poor dwarfs and giants were obtained with the VLT-UVES combination. This paper reports the detailed analyses of the 35...

Elemental abundances of metal poor carbon rich lead star: CS29497-030 (2002)

Sivarani, T., Bonifacio, P., Molaro, P., Cayrel, R., Spite, M., Spite, F., ...

We present here the abundance analysis of a metal poor carbon rich lead star, CS29497-030. High resolution and high signal to noise spectra were obtained using the UVES spectrograph on the 8.2m...

The lithium content of the globular cluster NGC 6397 (2002)

Bonifacio, P., Pasquini, L., Spite, F., Bragaglia, A., Carretta, E., Castellani, V., ...

We make use of high resolution, high signal-to-noise ratio spectra of 12 turn-off stars in the metal-poor globular cluster NGC 6397 to measure its lithium content. We conclude that they all have the...

First stars. I. The extreme r-element rich, iron-poor halo giant CS31082-001. Implications for the r--process site(s) and radioactive cosmochronology (2002)

Hill, V., Plez, B., Cayrel, R., Beers, T. C., Nordström, Birgitta, Andersen, J., ...

We present a high-resolution ( R= 75 000, S/ N ) spectroscopic analysis of the bright ( V= 11.7), extreme halo giant CS 31082-001([Fe/H] = -2.9), obtained in an ESO-VLT Large Programme dedicated to...

On the protection of cultural goods (2002)

Planetary nebulae in the magellanic clouds (2002)

Dennefeld, M., Francois, P., Leisy, P.

We present a large and homogeneous sample of optical and UV observations of PNe and derive their abundances and the implications for the Intermediate Mass Stars (IMS) and Galactic chemical evolution....

Cultural values, sources of guidance, and their relevance to managerial behavior: A 47-nation study (2002)

Smith, P. B., Peterson, M.F., Schwartz, S.M., Ahmad, A. H., Akande, D., Andersen, J. A., ...

Cultural values, sources of guidance, and their relevance to managerial behavior: A 47-nation study (2002)

Smith, P. B., Peterson, M.F., Schwartz, S.M., Ahmad, A. H., Akande, D., Andersen, J. A., ...

Spectra of binaries classified as lambda Boo stars (2001)

Faraggiana, R., Gerbaldi, M., Bonifacio, P., Francois, P.

High angular resolution observations have shown that some stars classified as lambda Boo are binaries with low values of angular separation and magnitude difference of the components; therefore the...

Measurement of stellar age from uranium decay (2001)

Cayrel, R., Hill, V., Beers, T., Barbuy, B., Spite, M., Spite, F., ...

The ages of the oldest stars in the Galaxy indicate when star formation began, and provide a minimum age for the Universe. Radioactive dating of meteoritic material and stars relies on comparing the...

Animal spirits meets creative destruction (2001)

Contracting productivity growth (2001)

We show how a Schumpeterian process of creative destruction can induce coordination in the timing of entrepreneurial activities across diverse sectors of the economy. Consequently, a multi-sector...

Culture and development : an analytical framework (2001)

In this paper, we analyze the interactions between growth and the contracting environment in the production sector. Allowing incompleteness in contracting implies that viable production relationships...

Employee care and the role of nonprofit organizations (2001)

This paper develops a framework which analyzes how a population's culture affects the decisions of rational profit maximizing firms, while simultaneously exploring how the actions of these firms in...

The O-Na and Mg-Al Anticorrelations in Turn-Off and early Subgiants in Globular Clusters (2000)

Gratton, R. G., Bonifacio, P., Bragaglia, A., Carretta, E., Castellani, V., Centurion, M., ...

High dispersion spectra (R>40,000) for a quite large number of stars at the main sequence turn-off and at the base of the subgiant branch in NGC6397 and NGC6752 were obtained with the UVES on Kueyen...

Gender wage differentials in a competitive labor market : the household interaction effect (2000)

Francois, P., Ours, J.C. Van

We present a theoretical explanation of the gender wage gap which turns on the interaction between men and women in households. In equilibria where men are over-represented in full-time work, we show...

Rent-seeking and resource booms (2000)

Francois, P., Baland, J-M.

Public service motivation as an argument for government provision (2000)

GRB000528, optical observations at ESO (2000)

Palazzi, E., Masetti, N., Pian, E., Frontera, F., Castro-Tirado, A.J., Hjorth, J., ...

Innovation, growth and welfare-improving cycles (1999)

Francois, P., Shi, S.

Investment coordination and demand complementarities (1999)

Francois, P., Baland, J-M.

Innovation, growth and welfare improving cycles (1999)

Francois, P., Shi, S.

Innovation, growth and welfare-improving cycles (1999)

Francois, P., Shi, S.

Gender discrimination without gender difference: Theory and policy responses (1998)

A catalogue of [Fe/H] determinations : 1996 edition (1997)

De Strobel, G. Cayrel, Soubiran, C., Friel, E. D., Ralite, N., Francois, P.

The Catalogue of [Fe/H] determinations has been updated and now includes 5946 determinations for 3247 stars (with 751 stars in 84 associations, clusters or galaxies). The 700 bibliographical...

Environmental cleanliness as a public good: Welfare and policy implications of non-convex preferences (1997)

Francois, P., Anderson, K.S.

Generalizing about trade show effectiveness: A cross-national comparison (1997)

Dekimpe, M.G., Francois, P., Gopalakrishna, S., Bulte, C. Van Den

Innovation, monopolies and the poverty trap (1996)

Francois, P., Baland, J-M.

Interface characterization by pull-out test between high modulus polyethylene fibre and an unsaturated polyester resin (1993)

Masse, P., Cavrot, J., Francois, P., Lefebvre, J., Escaig, B.

The observation of the pull-out conditions for a monofilament outside a matrix has been applied to a wide variety of organic or inorganic materials, as a direct method of interface characterization....

Interface characterization by pull-out test between high modulus polyethylene fibre and an unsaturated polyester resin (1993)

Masse, P., Cavrot, J., Francois, P., Lefebvre, J., Escaig, B.

The observation of the pull-out conditions for a monofilament outside a matrix has been applied to a wide variety of organic or inorganic materials, as a direct method of interface characterization....

Interface characterization by pull-out test between high modulus polyethylene fibre and an unsaturated polyester resin (1993)

Masse, P., Cavrot, J., Francois, P., Lefebvre, J., Escaig, B.

The observation of the pull-out conditions for a monofilament outside a matrix has been applied to a wide variety of organic or inorganic materials, as a direct method of interface characterization....

Trust, social capital and economic development

Paradoxes of French accreditation

Many argue that elements of a society s norms, culture or social capital are central to understanding its development. However, these notions have been difficult to capture in economic models. Here...

Pomey, M, Francois, P, Contandriopoulos, A, Tosh, A, Bertrand, D

   The accreditation system introduced into the French healthcare system in 1996 has five particular characteristics: (1) it is mandatory for all healthcare establishments; (2) it is performed by...

Gender wage differentials in a competitive labor market : the household interaction effect

Francois, P., Ours, J.C. Van

We present a theoretical explanation of the gender wage gap which turns on the interaction between men and women in households. In equilibria where men are over-represented in full-time work, we show...

Culture and development : an analytical framework

Contracting productivity growth

This paper develops a framework which analyzes how a population's culture affects the decisions of rational profit maximizing firms, while simultaneously exploring how the actions of these firms in...

Animal spirits meets creative destruction

In this paper, we analyze the interactions between growth and the contracting environment in the production sector. Allowing incompleteness in contracting implies that viable production relationships...

Co-movement, capital and contracts: 'normal' cycles through creative destruction

We show how a Schumpeterian process of creative destruction can induce coordination in the timing of entrepreneurial activities across diverse sectors of the economy. Consequently, a multi-sector...