Library of high-resolution spectra and database of stellar parameters of F, G, K and M stars

Transcription

1 Library of high-resolution spectra and database of stellar parameters of F, G, K and M stars David Montes Dpto. Astrofísica, F. Físicas Universidad Complutense de Madrid, UCM, Madrid, Spain First SVO Workshop on data publishing in the Virtual Observatory Centro de Astrobiología (INTA-CSIC), 8-9 Abril 2014

2 Collaborators Dpto. Astrofísica, F. Físicas Universidad Complutense de Madrid, UCM CAB (Centro de Astrobiologia) Madrid IAC (Instituto de Astrofísica de Canarias) David Montes, Alexis Klutsch, Hugo M. Tabernero, F. Javier Alonso-Floriano, M. Cortés-Contreras, Raquel M. Martínez-Arnáiz, Javier López-Santiago. José Antonio Caballero. Jonay I. González Hernández. Universidad Autónoma de Madrid, UAM CAB (Centro de Astrobiologia) Madrid Observatoire Astronomique, Université de Strasbourg Osservatorio Astrofisico di Catania Carlos Eiroa, Jesús Maldonado. Benjamín Montesinos, and DUNES team. Patrick Guillout, Rubens Freire Ferrero, F.-X. Pineau, N. Grosso, Antonio Frasca, Ettore Marilli.

3 Cool Stars FGKM type stars

4 Web resources about stellar spectral libraries (papers, links, electronic access to spectra, etc ) Maintained by David Montes (UCM) from to present

5 Libraries of stellar spectra web page

6

7 Libraries FGKM stars Montes et al. Libraries of high resolution spectra of cool stars (chromospheric activity) FGKM stars 1) Montes et al. 1997, A&ASS, 123, 473; Intermediate-resolution (0.2-3 Å) CaII H&K, Hβ, NaI D 1, D 2 & HeI D 3, Hα 170 spectra, 116 stars (V, IV, III) 2) Montes & Martín 1998, A&ASS, 128, 485; UES High-resolution ( Å) echelle ( Å) 105 spectra, 83 stars (V) 3) Montes, Ramsey & Welty 1999, ApJS, 123, 283; intermediate resolution (0.5 Å) echelle ( Å) 345 spectra, 130 stars (V, IV, III, II, I)

8 1) Montes et al. 1997, A&ASS, 123, 473; Intermediate-resolution (0.2-3 Å) CaII H&K, Hβ, NaI D 1, D 2 & HeI D 3, Hα 170 spectra, 116 stars (V, IV, III) IDS/INT, ISIS/WHT, Coude/2.2m Reference stars (low vsini, lor chrom. act.) For spectral subtraction technique. Libraries FGKM stars Montes et al.

9 2) Montes & Martín 1998, A&ASS, 128, 485; High-resolution ( Å) echelle ( Å) 105 spectra, 83 stars (V) UES/WHT Reference stars (low vsini, lor chrom. act.) For spectral subtraction technique. Libraries FGKM stars Montes et al.

10 3) Montes, Ramsey & Welty 1999, ApJS, 123, 283; intermediate resolution (0.5 Å) echelle ( Å) 345 spectra, 130 stars (V, IV, III, II, I) FOE/KPNO Reference stars (low vsini, lor chrom. act.) For spectral subtraction technique. Libraries FGKM stars Montes et al.

11 High resolution échelle spectra FGKM stars R= ( Å) Different échelle spectrographs Observations: WHT-UES, INT-MUSICOS, 2.2m-FOCES, NOT-SOFIN, NOT-FIES, TNG-SARG, From archives: 3.5m ESO-HARPS, VLT ESO-UVES, OHP - ELODIE, OHP - T193/Sophie MacDonald - 2dcoudé (S4N), 2.2m ESO- FEROS (S4N). HET-HRS, 2.2m ESO- FEROS, Mercator-HERMES.

12 Survey of FGK stars in MGs Survey late-type stars in Moving Groups (MGs) FGKM stars - Montes et al. 2001, A&A, 379, 976; - López-Santiago et al. 2005, PhD Thesis UCM; 2006, ApJ, 643, 1160; 2009, A&A, 499, 129; 2010, A&A, 514, A97

13 Survey Nearby FGK stars Survey of FGK stars in the solar neighbourhood (d < 25 pc), including the DUNES sample FGKM stars - Martínez-Arnáiz et al. 2010, A&A, 520, A79; 2011, MNRAS, 414, 2629, 2011, PhD Thesis UCM; - Maldonado et al. 2010, A&A, 521, A12 FGK stars in the solar neighbourhood (d < 25 pc) which include the DUNES sample, an approved Herschel OTKP with the aim of detecting cool faint dusty disks (Eiroa et al. 2010).

14 Chemical Tagging FGK stars Survey for Chemical Tagging of FGK stars in MGs Hyades and Ursa Major MGs F6-K4 stars - Tabernero, Montes, González Hernández 2012A&A...547A..13T; 2014, A&A in press

15 Spectroscopic Analysis Kinematics (U, V, W). Radial velocity (Vr) Age (LiI Å). Chromospheric activity CaII H&K to CaII IRT Rotation (vseni). Activity rotación relation Stellar parameters. T eff, log g, ξ and [Fe/H] Absolute and differential abudances. Chemical tagging

16 Stellar atmospheric parameters (T eff, log g, ξ and [Fe/H]) Stellar parameters T eff, log g, ξ and [Fe/H] StePar (Tabernero Montes, González Hernández 2012A&A...547A..13T): version of the MOOG code (Sneden 1973). - a grid of Kurucz ATLAS9 plane-parallel model atmospheres (Kurucz 1993). - The EW determination of the Fe lines with the ARES code (Sousa et al. 2007) Fe I and 36 Fe II lines (Sousa et al. 2008). The code iterates until obtain: - excitation equilibrium: the slopes of χ vs log(є(fe I)) and log(ew/λ) vs log(є(fe I)) where zero - ionization equilibrium: log(є(fe I)) = log(є(fe II)). - 2-σ rejection of Fe I and Fe II lines after a first determination of the parameters - Limitations: spectral types F6 to K4, slow rotators, no veiling.

17 Stellar parameters T eff, log g, ξ and [Fe/H]

18 Chemical abundances Fe, Na, Mg.. Fe, Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Co, and Ni - EW method in a line-by-line basis with ARES code (Sousa et al. 2007). - Line lists and atomic parameters from (Neves et al. 2009; González Hernández et al. 2010). - Abundance analysis with MOOG (Sneden 1973) using our determined atmospheric parameters and a solar spectrum taken with the same instrumental configuration. [Ni/Fe] vs [Fe/H]: open diamonds represent the thin disk data (González Hernández et al. 2010), black filled triangles represent Hyades cluster data (Paulson et al. 2003). Red points are our stars compatible with Hyades Fe abundance, and the green ones not compatible. BZ Cet and HD19902 Hyades cluster members are marked with blue circles. Purple starred points represent the giant stars. Black starred points are the candidates selected stars in De Silva et al. (2011), black circles are those selected in Pompéia et al. (2011).

19 New Library FGKM stars Montes et al. λλ 3800 to Å, resolution R = to The database will provide in addition the stellar parameters determined for these spectra.

20 New Library FGKM stars Montes et al.

21 New Library FGKM stars Montes et al.

22 Gaia ESO Spectroscopic Survey (GES) PIs: Sofia Randich (INAF-Arcetri) & Gerry Gilmore (IoA, Cambridge) Public large spectroscopic survey with Limiting mag. (R): 16.5 (UVES), 19 (Giraffe) 300 nights (30n/semester) over 5 (4+1) years; start 1/2012 (P88), end 9/2016 (P97)+; visitor mode GES spectroscopy complements and completes Gaia astrometry and viceversa

23 Gaia ESO Spectroscopic Survey (GES) Will start to provide large amount of data For the stars that will be be observed in the Gaia ESO Spectroscopic Survey (GES) with VLT-FLAMES, UVES and Giraffe - Stellar atmospheric parameters (T eff, log g, ξ and [Fe/H]) - Abundance determination. - DR1, idr2.. - WG1: Cluster Membership Analysis - WG11: UVES FGK-star Spectrum Analyses - WG12: Pre-Main-Sequence Stars Spectrum Analyses à Combined Gaia and homogeneous spectroscopic dataset full 6D phase space f(x,y,z,vx,vy,vz), plus stellar parameters, and chemistry for a very large number and variety of stars down to the 19 mag: core science plus legacy science

24 Characterization of the CARMENES sample Calar Alto high-resolution search for M dwarfs with Exoearths with Near-infrared and optical Échelle Spectrographs Characterization of late-type M-dwarfs (possible new CARMENES targets from Lepine & Gaidos 2011 catalog) Observations Low-res - CAFOS/2.2m (CAHA) (G100 R =1500, Å) à Tsp, activity 754 stars observed and analised High-res - CAFE/2.2m (CAHA) & FEROS (ESO) (R =60000, Å) (R =40000, Å) à vsini 212 stars observed

25 Survey of co-moving young stars in Cepheus We looked for optical counterparts of RASS X-ray sources cross-identified with late-type stars using multivariate analysis methods to disentangle the stellar population from the extragalactic component (galaxies and quasars) also emitting in X-ray (Pineau et al. 2011). Intermediate- and high-resolution optical spectra for 142 candidates, using spectrographs: INT/IDS (La Palma), 2.2m/FOCES (CAHA), T193/Sophie (OHP). High and Intermediate resolution Spectra

26 Searching isolated very young star We used color-color diagrams to select, a priori, young stellar objects from the cross-correlation of the RSC (RASS-Stars catalogue) and AKARI catalogues. In the B-V vs. V-S9W diagram (Fig.1, left panel), stars showing IR excess are clearly visible on the right side of the major sequence. They are also outsiders in the right upper region of the J- L18W vs. S9W-L18W diagram (Fig.1, right panel). High and Intermediate resolution Spectra

27 Mining the sky for accreting T-Tauri stars outside star-forming region cores INT/IDS long observing program 2013B 2014A Intermediate resolution Spectra

28 Library of high-resolution spectra and database of stellar parameters of F, G, K and M stars WWW All the spectra and derived parameters available in the VO

29 New Library FGKM stars Montes et al. Saada transforms a set of heterogeneous FITS files or VOtables of various categories (images, tables, spectra...) in a powerful database deployed on the Web.

30 New Library FGKM stars Montes et al.

31 New Library FGKM stars Montes et al.

32 Library of high-resolution spectra and database of stellar parameters of F, G, K and M stars WWW All the spectra and derived parameters available in the VO First SVO Workshop on data publishing in the Virtual Observatory Centro de Astrobiología (INTA-CSIC), 8-9 Abril 2014

33

34 The End