Collaborating with professional amateurs: low-mass stars in fragile multiple systems

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1 Collaborating with professional amateurs: low-mass stars in fragile multiple systems José Antonio Caballero 1 Joan Genebriera 2, Tòfol Tobal 3, F. Xavier Miret 3, Francisco M. Rica 4, Jordi Cairol 3, Núria Miret 3, Ignacio Novalbos 3, David Montes 5, Alexis Klutsch 5 1 Centro de Astrobiología, Madrid 2 Observatorio de Tacande, La Palma 3 Observatòri del Garraf, Barcelona 4 Sociedad Astronómica de Mérida, Badajoz 5 Universidad Complutense de Madrid X SEA Valencia 2012

Rica 4, Jordi Cairol 3, Núria Miret 3, Ignacio Novalbos 3, David Montes 5, Alexis Klutsch 5 1 Centro de

2 Formación, evolución y multiplicidad de enanas marrones y exoplanetas gigantes José Antonio Caballero /xó-se ka-ba-jé-ro/ Formation, evolution and multiplicity of brown dwarfs and giant exoplanets Universidad de La Laguna Instituto de Astrofísica de Canarias Directores: Rafael Rebolo López Víctor Javier Sánchez Béjar

of brown dwarfs and giant exoplanets 2006 03 Universidad de La Laguna Instituto

3 Una búsqueda de compañeros de estrellas Luyten con el Observatorio Virtual A search for companions to Luyten stars with the Virtual Observatory José A. Caballero 1 F. Xavier Miret 2 Joan Genebriera 3 Tófol Tobal 2 Jordi Cairol 2 David Montes 1 1: Dpto. de Astrofísica, Universidad Complutense de Madrd 2: Observatori Astrònomic del Garraf, Barcelona 3: Observatorio de Tacande, La Palma

Xavier Miret 2 Joan Genebriera 3 Tófol Tobal 2 Jordi Cairol 2 David Montes 1 1: Dpto.

4 Help #1: Xavier, Tófol and Jordi (and Núria et al.) at the Observatori Astrònomic del Garraf OAG is one of the main measurement providers of the USNO Washington Double Stars catalogue (104)

5 Help #2: The Tacande astro-photometric follow-up A battery of small telescopes in La Palma: 40, 20, 15, 12, 9 cm 40 cm Cassegrain Relay, F6/5, with a CCD ST8XE

6 The Garraf survey: Current 2008 status ~160 common-µ candidate companions studied to date 86 rejected systems with bad USNO- B1 astrometry 8 pairs with different USNO-B1 proper motions 20 physical systems with both star components in Hipparcos 29 physical systems with only one star component in Hipparcos 19 physical systems with no components in Hipparcos Half a dozen new serendipitouslydiscovered physical systems

with both star components in Hipparcos 29 physical systems with only one star component in Hipparcos 19

7 Garraf 1AB: A bright, young, very wide, low-mass binary in the solar neighbourhood A: G , M4.5e, X-ray, variable, age ~ 300 Ma (Daemgen et al. 2007) B: G , M5.5? Known binary GIC 158 in Giclas et al. (1971) P = d, A I = mag Optical imaging and low-resolution spectroscopy of Garraf 1AB with CAFOS / 2.2 m by D. Montes Accurate BVRI magnitudes New astrometric epoch Age? ρ = 46.0 ± 0.3 arcsec θ = ± 0.16 deg d = pc r = AU MA = Msol MB = Msol

6267 d, A I = 0.097 mag Optical imaging and low-resolution spectroscopy of Garraf 1AB with CAFOS / 2.2 m by D.

8 G AB + G = WDS (The magnetically-active, low-mass, triple system WDS ) Caballero et al. 2010, A&A 520, A91

9 Caballero et al. 2010, A&A

10 The beginning in 2006 Near-infrared colourmagnitude diagram for Caballero et al. (2007) (brown dwarfs with discs) Abnormally red colour of the young (Castor) M9V brown dwarf LP Zapatero Osorio et al. (2010) A proper-motion companion to a single M8V star in the field Tarantino s movie (in media res)

(Castor) M9V brown dwarf LP 944-20 Zapatero Osorio et al.

11 Koenigstuhl 1AB: the (second) widest ultracool binary: a challenge for very low-mass formation ejection scenarios! ρ = ± 0.07 arcsec d = 23 ± 2 pc s = 1800 ± 170 AU M A = ± M sol M B = ± M sol Highlight of the week in A&A Almost cover page! Caballero 2007a, A&A 462, L61

07 arcsec d = 23 ± 2 pc s = 1800 ± 170 AU M A = 0.103 ± 0.

12 Koenigstuhl 2 AB: A new very low-mass star in a wide binary (the third widest system with M A + M B < 0.4 M sol ) Primary: LP (Luyten 1979) Secondary: 2M (M8.0V; Cruz et al. 2003) s = 450 ± 40 AU M A = 0.26 ± 0.04 M sol M B = ± M sol Caballero 2007b, ApJ 667, 520

4 M sol ) Primary: LP 655-23 (Luyten 1979) Secondary: 2M0430-08 (M8.

13 Koenigstuhl 3 ABC: the widest system containing an L dwarf component Primary: HD (F8.0V; Hipparcos) Secondary: 2M AB (M8.0V+L3.0V; Gizis et al. 2000, 2003) ρ = ± arcmin s = ± 300 AU M A = 1.02 ± 0.07 M sol M BC = M sol And a new L3:V close companion to A (Gauza et al., subm.) Caballero 2007b, ApJ 667, 520

530 ± 0.007 arcmin s = 11900 ± 300 AU M A = 1.02 ± 0.07 M sol M BC = 0.088+0.

14 A Virtual Observatory search for companions to Luyten stars 20 physical systems with both star components in Hipparcos 29 physical systems with only one star component in Hipparcos 19 physical systems with no components in Hipparcos Half a dozen new serendipitously-discovered physical systems The Garraf survey

one star component in Hipparcos 19 physical systems with no components in

15 Reaching the boundary between stellar kinematic groups and very wide binaries. I WDS stars with the widest angular separations (ρ > 999 arcsec): N=30 Visual or unidentified doubles: N=23 Physical double candidates: N=7 (including α Centauri A, B and C) Caballero 2009, A&A 507, 251

I WDS stars with the widest angular separations (ρ > 999 arcsec): N=30

16 Reaching the boundary between stellar kinematic groups and very wide binaries. I Six systems with s > 0.1 pc (previously assumed upper limit to the distribution of wide binary semimajor axes) Four systems with s > 0.2 pc Comparison of gravitational binding energies (U* g = GM A M B /s) See Cortés-Contreras et al. (poster) Caballero 2009, A&A 507, 251

1 pc (previously assumed upper limit to the distribution of wide binary semimajor axes)

17 Caballero 2009, A&A 507, 251

18 Reaching the boundary between stellar kinematic groups and very wide binaries. II The widest system! Caballero 2010, A&A 514, A98

19 Caballero 2010, A&A 514, A98

20 HD AB Further Pro-Am collaboration Astrophotometric follow-up by Joan Genebriera of the new young system HD AB (Local Assoc.) Alonso- Floriano et al. (poster)

21 Caballero 2012, Obs 132, 1

22 Caballero & Montes 2012, Obs 132, 176

23 Caballero & Montes 2012, Obs 132, 176

24 COOL DWARFS IN WIDE MULTIPLE SYSTEMS PAPER 4: A COMMON- PROPER- MOTION PAIR OF TWO IDENTICAL MID- M DWARFS SEPARATED BY ABOUT AU By F. M. Rica Agrupación Astronómica de Mérida, Extremadura, Spain Liga Iberoamericana de Astronomía, Santa Fe, Argentina and José A. Caballero Centro de Astrobiología (CSIC-INTA), Madrid, Spain LSPM J and LSPM J are two high proper motion stars recently claimed to form a binary system, FMR 83, by Rica (2012). Here we characterise the system in detail, using astrometric and photometric data, and Yind that the pair consists of two M4±1 dwarfs separated by AU. With these results, FMR 83 becomes one of the very few ultrafragile systems (i.e., systems with very low total masses and very wide physical separations), many of which have been identiyied in this series of papers. Rica & Caballero 2012, Obs, in press

25 Rica et al. 2011, MNRAS 419, 197

26 Observatori Astronòmic del Garraf Wide Pairs Survey: Project involving most Spanish double amateur astronomers (>50!) Garraf survey heritage + visual blinking with Aladin In collaboration with Enrique Solano (SVO) and David Valls-Gabaud (France) Direct connection to the Washington Double Star catalogue 2300 new pairs! OAGWPS

27 Caballero et al., A&A, to be submitted

28 Future A&A submission Papers 5, 6, 7 for The Observatory in preparation (Griffin s son ) Go on with the sucessful Pro-Am collaboration Caballero &???

Preparation of the CARMENES Input Catalogue: Multiplicity of M dwarfs from Tenths of Arcseconds to Hundreds of Arcminutes

Preparation of the CARMENES Input Catalogue: Multiplicity of M dwarfs from Tenths of Arcseconds to Hundreds of Arcminutes M. Cortés Contreras 1, J.A. Caballero 3, V.J.S. Béjar 2, B. Gauza 2, D. Montes