Preprints in 2007

PP 07050

The influence of the EUV coronal irradiance on the emission in the He I 10830 \AA\ and D3 multiplets
R. Centeno (1,2), J. Trujillo Bueno (1,3), H. Uitenbroek {4} and M. Collados {1}
(1) IAC; (2) HAO-NCAR; (3) CSIC; (4) NSO
Accepted for publication in ApJ | Submitted on 2007-12-14 | Project 3I2507
PP 07049

Jets in coronal holes: Hinode observations and 3D computer modelling
F. Moreno-Insertis (1),(2); K. Galsgaard (3), I. Ugarte-Urra (4),(5)
(1) Instituto de Astrofisica de Canarias, Tenerife, Spain, fmi@iac.es; (2) Dept of Astrophysics, Fac of Physics, Univ La Laguna, Tenerife, Spain; (3) Niels Bohr Institute, University of Copenhagen, Denmark; kg@astro.ku.dk; (4) Space Science Division, Naval Research Laboratory, Washington, USA, iugarte@ssd5.nrl.navy.mil; (5) College of Science, George Mason University, Fairfax, USA
Accepted for publication in ApJL | Submitted on 2007-12-10 | Project 3I1303
PP 07048

Spiral Inflow Feeding the Nuclear Starburst in M83, Observed in Halpha emission with the GHaFaS Fabry-Perot interferometer
Fathi,K.(1),Beckman J.E. (1,2),Lundgren, A.(3), Carignan,C.(4), Hernandez, O.(4) Amram,P. (5), Balard,P.(5), Boulesteix,J. (5), Gach, J.-L.(5), Knapen,J.(1), Relaño,M (6)
1. IAC, (2) CSIC, (3), Obs. Stockholm, (4) Dept. Physique,U. Montreal, (5) Obs. Marseille, (6).Dpto. Fis. y Cosmos., U. Granada
Accepted for publication in ApJL | Submitted on 2007-12-06 | Project P3/86, AYA2004-08251-CO2-01, AYA2007-67625-CO2-01
PP 07047

Measurements of the Surface Brightness of the Earthshine with Applications to Calibrate Lunar Flashes
Pilar Montañés‐Rodríguez, Enric Pallé & P. R. Goode
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, E‐38200 La Laguna, Tenerife, Spain Big Bear Solar Observatory, New Jersey Institute of Technology, Newark, NJ 07102, USA
Accepted for publication in Astronomical Journal | Submitted on 2007-12-04 | Project 3I2204
PP 07046

Spectropolarimetry of a decaying sunspot penumbra
Beelot Rubio, L., Tritschler, A., Martinez Pillet, V
Instituto de Astrofísica de Andalucía National Solar Observatory/Sacramento Peak Instituto de Astrofísica de Canarias
Accepted for publication in ApJ | Submitted on 2007-12-03 | Project 2/99
PP 07045

Identifying the rotation rate and the presence of dynamic weather on extrasolar Earth-like planets from photometric observations.
E. Palle, E.B. Ford, S. Seager, P. Montañés-Rodríguez, M. Vázquez
Instituto de Astrofisica de Canarias Department of Astronomy, University of Florida EAPS, Massachusetts Institute of Technology
Accepted for publication in ApJ | Submitted on 2007-11-30 | Project 3E1307
PP 07044

Trends and cycles in long Irish meteorological series
C.J. Butler, A. Garcia-Suarez, E. Palle
Armagh Observatory, School of Geographical Sciences, University of Bristol IAC
Accepted for publication in Biology and Environment: Proceedings of the royal Irish academy | Submitted on 2007-11-30 | Project 3E1307
PP 07043

New constraints on the membership of the T dwarf S Ori 70 in the sigma Orionis cluster
M. R. Zapatero Osorio (1), V. J. S. Béjar (1), G. Bihain (1,2), E. L. Martín (1,3), R. Rebolo (1,2), I. Villó-Pérez (4), A. Díaz-Sánchez (4), A. Pérez Garrido (4), J. A. Caballero (5), T. Henning (5), R. Mundt (5), D. Barrado y Navascués (6), and C. A. L. Bailer-Jones (5)
(1) IAC, Spain (2) CSIC, Spain (3) Univ. Central Florida, USA (4) Univ. Politécnica de Cartagena, Spain (5) MPIA, Germany (6) LAEFF-INTA, Spain
Accepted for publication in A&A | Submitted on 2007-11-13 | Project 6/95
PP 07042

SN 2002cv: A Heavily Obscured Type Ia Supernova
Nancy Elias Rosa(1) + 18 autores (3) (incluyen J.Beckman(2))
(1)Max Planck Institut für Astrofysik, Garching, Alemania (2) IAC (3) Dept. Astronomia U. Padua, Italia y mas institutos
Accepted for publication in MNRAS | Submitted on 2007-11-07 | Project P3/86 y 3E3707
PP 07041

On the Influence of Resonant Scattering on Cosmic Microwave Background Polarisation Anisotropies
C. Hernandez-Monteagudo(1), J.A. Rubiño-Martin(2), R.A. Sunyaev(3,4)
(1) Dept. of Physics and Astronomy, Univ. Pennsylvania, (2) IAC, (3) MPA, (4) IKI, Moscow
Accepted for publication in MNRAS | Submitted on 2007-10-30 | Project P310586
PP 07040

Quiet Sun Magnetic Field Measurements Based on Lines with Hyperfine Structure
J. Sanchez Almeida (1), B. Viticchie (2), E. Landi Degl'Innocenti(3), F. Berrilli(2)
((1) Instituto de Astrofisica de Canarias, La Laguna, Spain, (2) Dipartimento di Fisica, Universita di Roma Tor Vergata, Rome, Italy, (3) Universita degli Studi di Firenze, Dipartimento di Astronomia e Scienza dello Spazio, Firenze, Italy)
Accepted for publication in ApJ | Submitted on 2007-10-29 | Project 3I1502
PP 07039

VLT-VIMOS Integral Field Spectroscopy of Luminous and Ultraluminous Infrared Galaxies I. The Sample and First Results
Santiago Arribas (1), Luis Colina (1), Ana Monreal-Ibero (2), Julia Alfonso (1), Macarena García-Marín ()1, and Almudena Alonso-Herrero (1)
(1) Departamento de Astrofísica Molecular e Infrarroja (DAMIR), Instituto de Estructura de la Materia (IEM/CSIC), C/ Serrano, 121, 28006-Madrid, Spain. (2) Instituto de Astrofísica de Canarias, 38200-La Laguna, Tenerife, Spain.
Accepted for publication in A&A | Submitted on 2007-10-24 | Project P1/92
PP 07038

The Mid-Infrared Emission of Seyfert Galaxies: A New Analysis of ISOCAM Data
C. Ramos Almeida(1), A. M. Pérez García(1), J. A. Acosta-Pulido(1), and J. M. Rodríguez Espinosa(1)
(1)IAC
Accepted for publication in Astronomical Journal | Submitted on 2007-10-11 | Project sburst
PP 07037

Shortwave forcing of the earth's climate: modern and historical variations in the sun's irradiance and the earth's reflectance
Phillip R Goode and Enric Palle
Big Bear Solar Observatory, New Jersey Institute of Technology, Big Bear City, 92314, USA. Instituto de Astrofisica de Canarias, La Laguna, E38205, Spain.
Accepted for publication in J. Atmos. Sol-Terr. Phys. | Submitted on 2007-10-09 | Project 3E1307
PP 07036

Small scale behavior of the physical conditions and the abundance discrepancy in the Orion nebula
Adal Mesa-Delgado (1), César Esteban (1), and Jorge Gracía-Rojas (2)
(1)Instituto de Astrofísica de Canarias, Spain (2)Instituto de Astronomía, UNAM, Mexico
Accepted for publication in ApJ | Submitted on 2007-10-08 | Project 14/86
PP 07035

Search for photospheric footpoints of quiet Sun transition region loops

J. Sanchez Almeida (1), L. Teriaca (2), P. Suetterlin (3), D. Spadaro (4), U. Schuehle (2), and R. J. Rutten (3)
((1) Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain, (2) Max-Planck-Institut fur Sonnensystemforschung, Lindau, Germany, (3) Sterrenkundig Instituut, Universiteit Utrecht, The Netherlands, and (4) INAF-Osservatorio Astrofisico di Catania, Catania, Italy)
Accepted for publication in A&A | Submitted on 2007-09-26 | Project 3I1502
PP 07034

The ACS Survey of Galactic Globular Clusters. III. The Double Subgiant Branch of NGC 1851
A. P. Milone (1), L. R. Bedin (2), G. Piotto (1), J. Anderson (3), I. R. King (4), A. Sarajedini (5), A. Dotter (6), B. Chaboyer (6), A. Marin-Franch (7), S. Majewski (8), A. Aparicio (7), M. Hempel (5), N. E. Q. Paust (2), I. N. Reid (2), A. Rosenberg (7), M. Siegel (9)
(1) Universita di Padova, (2) Space Telescope Science Institute, (3) Rice University, (4) University of Florida, (6) Dartmouth College, (7) IAC, (8) University of Virginia, (9) University of Texas
Accepted for publication in ApJ | Submitted on 2007-09-25 | Project P3/94
PP 07033

Bayesian Inversion of Stokes Profiles
A. Asensio Ramos (1), M. J. Martínez González (2), J. A. Rubiño-Martín (1)
(1) IAC (2) LERMA
Accepted for publication in A&A | Submitted on 2007-09-06 | Project 3I2507
PP 07032

What do we really know about spiral galaxy morphology?
Beckman J.E.(1,2)). Erwin P(1,3)., Pohlen M(1,4).
(1). IAC (2). CSIC.(3).MPI für Extraterrestrische Physik,Garching, Alemania,. (4) Dept. Astronomy Univ. Wales,Cardiff, R.Unido.
Accepted for publication in Proceedings Astrophys.Symposium XX Bienal de la RSEF, Ourense. 2005 | Submitted on 2007-09-06 | Project P3/86
PP 07031

Some doubts on the validity of the foreground Galactic contribution subtraction from microwave anisotropies
M. López Corredoira
IAC
Accepted for publication in J. Astrophys. Astr. | Submitted on 2007-08-31 | Project 5/94
PP 07030

The outer Disks of Early-type Galaxies.I.Surface brightness Profiles of Barred Galaxies.
Peter Erwin (1,2), Michael Pohlen, (2,3),John E.Beckman (2,4)
1. Max Planck Institut f�r Extraterrestrische Physik,Garching, Germany. 2. Instituto de Astrof�sica de Canarias. La Laguna, Tenerife, Spain. 3. Astronomical Institute, University of Groningen, Netherlands 4. Consejo Superior de Investigaciones Cient�ficas, Spain.
Accepted for publication in Astronomical Journal | Submitted on 2007-08-27 | Project P3/86
PP 07029

Quantifying Resonant Structure in NGC 6946 from Two-Dimensional Kinematics
Kambiz Fathi(1), Silvia Toonen (1,2), Jesus Falcon-Barroso (3), John E. Beckman(1,4) Olivier Hernandez (5), Olivier Daigle(5),Claude Carignan(5), Tim de Zeeuw(2)
(1) Instituto de Astrofísica de Canarias (2)Sterrewacht Leiden, University of Leiden (Netherlands).(3) European Space Agency, ESTEC, Netherlands. (4) CSIC (5) Université de Montreal, Canada.
Accepted for publication in ApJL | Submitted on 2007-08-08 | Project P3/86 AYA2004-08251-CO2-01
PP 07028

Quantifying Resonant Structure in NGC 6946 from Two-Dimensional Kinematics
Kambiz Fathi(1), Silvia Toonen (1,2), Jesus Falcon-Barroso (3), John E. Beckman(1,4) Olivier Hernandez (5), Olivier Daigle(5),Claude Carignan(5), Tim de Zeeuw(2)
(1) Instituto de Astrofísica de Canarias (2)Sterrewacht Leiden, University of Leiden (Netherlands).(3) European Space Agency, ESTEC, Netherlands. (4) CSIC (5) Université de Montreal, Canada.
Accepted for publication in ApJL | Submitted on 2007-08-08 | Project P3/86 AYA2004-08251-CO2-01
PP 07027

Reaffirming the connection between the Galactic stellar warp and the Canis Major overdensity
M. López-Corredoira (1), Y. Momany (2), S. Zaggia (2), A. Cabrera-Lavers (1,3)
(1) IAC, (2) INAF-Oss. Astronomico di Padova, (3) GTC Project Office
Accepted for publication in A&A Letters | Submitted on 2007-08-02 | Project 3E4504
PP 07026

The ACS Survey of Galactic Globular Clusters: M54 and Young Populations in the Sagittarius Dwarf Spheroidal Galaxy
Michael H. Siegel (1), Aaron Dotter (2), Steven R. Majewski (3), Ata Sarajedini (4), Brian Chaboyer (2), David L. Nidever (3), Jay Anderson (5), Antonio Marin-Franch (4,6), Alfred Rosenberg (6), Luigi R. Bedin (7), Antonio Aparicio (6), Ivan King (8), Giampaolo Piotto (9), I. Neill Reid (7)
(1) University of Texas, McDonald Observatory, 1 University Station, C1402, Austin TX, 78712 (2) Department of Physics and Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, NH 03755 (3) Dept. of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904-4325 (4) Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL (5) Department of Physics and Astronomy, Rice University MS-108, Houston, TX 77005 (6) Instituto de Astrof´?sica de Canarias, Via Lactea s/n, E-38200 La Laguna, Spain (7) Space Telescope Science Institute, 3700 San Martin Drive, Baltimore MD 21218 (8) Dept. of Astronomy, Univ. of Washington, Box 351580, Seattle, WA 98195-1580 (9) Dipartimento di Astronomia, Universita di Padova, 35122 Padova, Italy
Accepted for publication in ApJL | Submitted on 2007-08-02 | Project Poblaciones Estelares en Galaxias (P3/94)
PP 07025

Spectrophotometric investigations of Blue Compact Dwarf Galaxies: Markarian 35
Luz M. Cairós (1), Nicola Caon (2), Begoña García Lorenzo (2), Ana Monreal-Ibero (1), Ricardo Amorín (2), Peter Weilbacher (1), Polychronis Papaderos (3)
(1) Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany - (2) Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Canary Islands, Spain - (3) Instituto de Astrofísica de Andalucía, Apdo. 3004, 18080 Granada, Spain
Accepted for publication in ApJ | Submitted on 2007-07-26 | Project P1/92
PP 07024

On the abundance discrepancy problem in HII regions
Jorge García-Rojas César Esteban
Instituto de Astrofísica de Canarias
Accepted for publication in ApJ | Submitted on 2007-07-24 | Project P14/86
PP 07023

Stellar Populations in the Outskirts of the Small Magellanic Cloud: No Outer Edge Yet

Noelia E. D. Noël (1) and Carme Gallart (1)
(1) IAC
Accepted for publication in ApJL | Submitted on 2007-07-04 | Project 310394
PP 07022

Space Velocities of L- and T-type Dwarfs
M. R. Zapatero Osorio (1), E. L. Martín (1,2), V. J. S. Béjar (1), H. Bouy (3,1), R. Deshpande (2), R. J. Wainscoat (4).
(1) IAC, (2) University of Central Florida (USA), (3) University of California in Berkeley (USA), (4) IfA (USA).
Accepted for publication in ApJ | Submitted on 2007-06-19 | Project Bioastronomía y 6/95.
PP 07021

The Scattering Polarization of the Sr I 4607 \AA\ Line at the Diffraction Limit Resolution of a 1-m Telescope
Javier Trujillo Bueno (1) and Nataliya Shchukina (2)
(1) IAC (2) Main Astronomical Observatory
Accepted for publication in ApJL | Submitted on 2007-06-18 | Project 3I2507
PP 07020

Extreme Value Theory and the Solar Cycl
A. Asensio Ramos
IAC
Accepted for publication in A&A | Submitted on 2007-06-18 | Project 3I2507
PP 07019

Astrometry with "Carte du Ciel" plates, San Fernando zone. I. Digitization and measurement using a flatbed scanner.
Bel
(1) IAC, Spain (2) CIDA, Venezuela (3) Universidad de La Laguna, Spain
Accepted for publication in A&A | Submitted on 2007-06-13 | Project P5/94
PP 07018

Are collisions with neutral hydrogen important for modelling the Second Solar Spectrum of Ti I and Ca II ?
M. Derouich, J. Trujillo Bueno and R. Manso Sainz
Instituto de Astrofisica de Canarias
Accepted for publication in A&A | Submitted on 2007-05-16 | Project 3I2507
PP 07017

H2D+ line emission in Proto-Planetary Disk
A. Asensio Ramos (1), C. Ceccarelli (2), M. Elitzur (3)
(1) Instituto de Astrofisica de Canarias (2) Laboratoire d'Astrophysique de l'Observatoire de Grenoble (3) Physics & Astronomy Department, University of Kentucky
Accepted for publication in A&A | Submitted on 2007-05-15 | Project 5/96
PP 07016

THE MAGNETIC SENSITIVITY OF THE Ba II D1 and D2 LINES OF THE FRAUNHOFER SPECTRUM
Luca Belluzzi (1,2), Javier Trujillo Bueno (1,3) and Egidio Landi Degl'Innocenti (2)
(1) IAC (2) University of Florence (3) CSIC
Accepted for publication in ApJ | Submitted on 2007-05-04 | Project 3I2507
PP 07015

The dynamical status of the galaxy cluster Abell 115
R. Barrena (1), W. Boschin (2,3), M. Girardi (3,4), M. Spolaor (3,5)
(1) IAC, (2) TNG, Fundacion Galileo Galilei - INAF, (3) Dipartimento di Astronomia of the Universita degli Studi di Trieste (Italy), (4) INAF - Osservatorio Astronomico di Trieste (Italy), (5) Centre for Astrophysics \& Supercomputing, Swinburne University (Australia)
Accepted for publication in A&A | Submitted on 2007-05-02 | Project 3I2406
PP 07014

FULLERENES AND THE \lambda 4430 DIFFUSE INTERSTELLAR BAND
Susana Iglesias-Groth
IAC
Accepted for publication in ApJL | Submitted on 2007-04-16 | Project 4E4202
PP 07013

Old Main-Sequence Turnoff Photometry in the Small Magellanic Cloud. I. Constraints on the Star Formation History in Different Fields

Noelia E. D. Noel(1), Carme Gallart(1), Edgardo Costa(2) and Rene A. Mendez(2)
(1)IAC,(2) Universidad de Chile
Accepted for publication in Astronomical Journal | Submitted on 2007-04-11 | Project 3E4104
PP 07012

Stellar populations of globular clusters in the Elliptical galaxy NGC1407
A. J. Cenarro (1), M. A. Beasley (1), J. Strader (2), J. P. Brodie (2), D. A. Forbes (3)
(1) IAC, (2) UCO/Lick Observatory, (3) Swinburne university
Accepted for publication in Astronomical Journal | Submitted on 2007-03-19 | Project 3I2406
PP 07011

Bar-driven injection of intergalactic matter into galactic halos
M. López-Corredoira
IAC
Accepted for publication in A&A | Submitted on 2007-03-16 | Project 3I2005
PP 07010

An Evolutionary Sequence of Expanding Hydrogen Shells in Galaxy Discs
M.Relaño (1) J.E.Beckman (2,3),O.Daigle (4), C.Carignan (4)
(1) Dpto. Física Teórica y del Cosmos, Universidad de Granada. (2)Instituto de Astrofísica de Canarias (3)Consejo Superior de Investigaciones Científicas (4)Observatoire de Mont Mégantic, LAE Université de Montreal.
Accepted for publication in A&A | Submitted on 2007-03-16 | Project P3/86, AYA2004-08251-CO2-01
PP 07009

Fourier method in the determination of rotational velocities in OB stars
S. Simón-Díaz (1,2), A. Herrero(1,3)
(1) Instituto de Astrofísica de Canarias (2) LUTh. Observatorio de París - Meudon (3) Departamento de Astrofísica. Universidad de La Laguna
Accepted for publication in A&A | Submitted on 2007-03-12 | Project P8/98
PP 07008

Evolution of structure in late-type spiral galaxies: I. Ionized gas kinematics in NGC628
K. Fathi(1), J.E. Beckman(1,2),A. Zurita(3), M. Relaño(3), J.H. Knapen(1), O. Daigle(4), O. Hernandez(4), C. Carignan(4).
(1)Instituto de Astrofísca de Canarias (2)Consejo Superior de Investigaciones Científicas (3) Dept. de Física Teórica y del Cosmos, U.Granada (4) Dept. Astronomía, U.Montreal
Accepted for publication in A&A | Submitted on 2007-03-05 | Project P3/86
PP 07007

ON THE MOAT-PENUMBRA RELATION
S. Vargas Domínguez (1), J.A. Bonet(1), V. Martínez Pillet(1), Y. Katsukawa(2), Y. Kitakoshi(2), L. Rouppe van der Voort(3,4)
(1) Instituto de Astrofisica de Canarias, Spain, (2) National Astronomical Observatory of Japan, Japan, (3) Institute of Theoretical Astrophysics, University of Oslo, Norway, (4) Center of Mathematics for Applications, University of Oslo, Norway.
Accepted for publication in ApJL | Submitted on 2007-02-27 | Project 4E2403
PP 07006

A Canis Major over-density imaging survey. I. Stellar content and star-count maps : A distinctly elongated body of main sequence stars
D. J. Butler (1), D. Martinez-Delgado (1,2,3), H-W. Rix (1), J. Penarrubia (1,4), J. T. A. de Jong (1)
(1) MPIA, Heidelberg, (2) Instituto de Astrofisica de Andalucia, (3) Instituto de Astrofisica de Canarias, (4) University of Victoria)
Accepted for publication in Astronomical Journal | Submitted on 2007-02-07 | Project 3I2306
PP 07005

Internal dynamics of the radio halo cluster Abell 773: a multiwavelength analysis
R. Barrena(1), W. Boschin(2,3), M. Girardi(3,4), M. Spolaor(3,5)
(1) IAC, (2) Fundacion Galileo Galilei - INAF, (3) Dipartimento di Astronomia, Universita degli Studi di Trieste, (4) INAF -- Osservatorio Astronomico di Trieste, (5) Centre for Astrophysics & Supercomputing, Swinburne University, Australia
Accepted for publication in A&A | Submitted on 2007-01-30 | Project 6/88
PP 07004

The intrinsic dimensionality of spectro-polarimetric data
A. Asensio Ramos (1), H. Socas-Navarro (2), A. Lopez Ariste (3) & M. J. Martinez Gonzalez (1,4)
(1) Instituto de Astrofisica de Canarias (2) High Altitude Observatory (3) THEMIS (4) Max-Planck Institut für Sonnensystemforschung
Accepted for publication in ApJ | Submitted on 2007-01-22 | Project 5/96
PP 07003

THE VIRGO STELLAR OVER-DENSITY: MAPPING THE INFALL OF THE SAGITTARIUS TIDAL STREAM ONTO THE MILKY WAY DISK
David Martinez-Delgado (1), Jorge Peñarrubia (2), Mario Juric (3), Emilio J. Alfaro (4), Zeljko Ivezic (3)
(1) IAC; (2) University of Victoria; (3) Department of Astrophysical Science, Princeton; (4)IAA (CSIC)
Accepted for publication in ApJ | Submitted on 2007-01-17 | Project 3I2306
PP 07002

The 2004-2006 outburst and environment of V1647 Ori
J.A. Acosta Pulido (1), M. Kun (2), P. Ábrahám (2), A. Kóspál (2), Sz. Csizmadia (2), L.L. Kiss (3), A. Moór (2), L. Szabados (2), J.M. Benkö (2), R. Barrena Delgado (1), M. Charcos Llorens (1), M. Eredics (2), Z.T. Kiss (4), A. Manchado (1), M. Rácz (2), C. Ramos Almeida (1), P. Székely (5), M.J. Vidal Nuñez (1)
(1) IAC, (2) Konkoly Observatory, Hungary, (3) University of Sidney, Australia, (4) Baja Astronomical Observatory, Hungary, (5) University of Szeged, Hungary
Accepted for publication in Astronomical Journal | Submitted on 2007-01-17 | Project 3E6604,3I1202
PP 07001

Properties of sunspots in cycle 23 I. Dependence of brightness on sunspot size and cycle phase
S. K. Mathew (1), V. Martinez Pillet (2), S. K. Solanki (3), N. A. Krivova (3)
(1) Udaipur Solar Observatory, P. O. Box 198, Udaipur - 313004, India (2) Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain (3) Max-Planck-Institute for Solar System Research, 37191 Katlenburg-Lindau, Germany
Accepted for publication in A&A | Submitted on 2007-01-08 | Project 2/99