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![Page 1: REG Red Española de Gaia La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 1/22 La contribución de las ICTS españolas a la.](https://reader036.fdocumento.com/reader036/viewer/2022062305/5665b4331a28abb57c8feac0/html5/thumbnails/1.jpg)
REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 1/22
La contribución de las ICTS españolas La contribución de las ICTS españolas a la misión Gaia de ESAa la misión Gaia de ESA
Objetivos: Ofrecer un marco de discusión a la comunidad interesada en la explotación científica de Gaia (REG - GREAT) a cerca de las necesidades de observaciones complementarias a poder llevar a cabo con ICTS españolas.
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 2/22
Dos telescopios: espejos primarios de 1.45 0.50 m2
Plano focal combinado 2 FoV, con 106 CCD
Eje de rotación (6 h), precesión (63 día)
Radial-Velocity Spectrograph (RVS)
Figure courtesy EADS Astrium
Bipods
Estructura toroïdal de SiC
Monitor del ángulo de base
Superposición de los dos FoV
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 3/22
All 10 mirrors integrated on the optical bench
Alignment of the two telescopes in progress, tolerance 3 mm
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 4/22
Focal plane
Blu
e Ph
otometer C
CD
sB
lue P
hotom
eter CC
Ds
Red
Ph
otometer C
CD
sR
ed P
hotom
eter CC
Ds
Image motion
2
Radial Velocity Spectrometer CCDs
2
Radial Velocity Spectrometer CCDs
Astrometry
106 CCD, 938 milions of pixels, 2800 cm2 104,26cm
42,3
5cm
Detection Spectrophotometry Spectroscopy
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 5/22
Focal Plane Assembly
Completion of mechanical and thermal tests; delivery for integration in the PLM
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 6/22
Summary of status
Industrial development is overall good: no major issues unresolvedCompletion of the FPA mechanical tests and thermal tests Completion of the alignment of the two telescopesLaunch in 2013
Data processing preparation is in good healthGSIR successfulend-to-end tests ongoingFirst steps for CU9: GAP, GENIUS
Scientific exploitationData releases scenario establishedGREAT & REG: meetings, exchange of visits, ESRs FP7Additional spectroscopic survey: Gaia-ESO
Contribution to the scientific case of WEAVE
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 7/22
First release:launch + 22 MonthsAug-2013 June-2015
• Positions () and G-mag for single-like stars (90% of the sky)
• the Hundred Thousand Proper Motions (HTPM) catalogue based on the Hipparcos stars
Second release:
launch + 28 Months
Dec-2015
• Updates of above +• Mean radial velocities for stars with non-variable radial velocity (90% of the sky)
Third release:
launch + 40 Months
Dec-2016
• Positions (), proper motions, and parallaxes and G-mag for single stars (90% of the sky)• Orbital solution for period between 2 months and 75% of the observation duration
• Integrated photometry RP/BP
• Spectrophotometry from RP/BP for sources for which astrophysical parameters are simultaneously released
• Source classification based on BP/RP and astrometry for stars with sufficiently high quality data
• Mean RVS spectra for sources where single epoch spectra are usable and APs are simultaneously released
Data release scenario (I)
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 8/22
Fourth release:
launch + 65 Months
Jan-2019
Updates of all above + • Source classification plus multiple stellar astrophysical parameters derived from BP/RP, RVS and astrometry for the majority of stars• Variable star classifications and parameters as available, and the epoch photometry
• Solar system results with preliminary orbital solutions and individual epoch observations
• Non-single star catalogue
Final release:
End Mission + 3 years (36 months)
Aug-2021/2022
Full astrometric, photometric, radial velocity catalogue
• All available variables and non-single stars solutions
• Source classifications (probabilities) plus multiple astrophysical parameters derived from BP/RP, RVS and astrometry for stars, unresolved binaries, galaxies and quasars.
Precision improved with respect to 4th release. Some parameters may not be available for fainter stars.
• Non Single Stars solutions and exo-planet list
• All epoch and transit data for all sources
• All Ground Based Observations made for data processing purposes (or links to it)
Data release scenario (II)
+ early releases of transient sources and Near Earth Objects to IMMCE
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 9/22
Gaia capabilities •Positions, proper motions and parallaxes for 1 billion stars (G < 20)
•Low resolution spectrophotometry for 1 billion stars, allowing estimations of Teff, logg, Av and [Fe/H]
•Radial velocities for 150 million stars (GRVS < 17)
•Atmospheric parameters, reddening and rotational velocities for 5 million stars (GRVS < 12)
•Detailed chemical abundances for 2 million stars (GRVS < 11)…but is going to need some help ~90% of stars without radial velocities
> 90% without accurate chemical composition
additional characterization, time sampling
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 10/22
1.Data processing and mission operations
2.Science exploitation: ongoing projects
3.Science exploitation: future projects
On-ground observations
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 11/22
1. Data processing and mission operations (I)
DPAC, data processing GBOG was set up in 2006
• spectrophotometric standards ([email protected], DOLORES@TNG)long-term variability monitoring until 2014, ~200 SPSS, V<14, small telescopes
• 1420 radial velocity standards: stability at 300 m/svariability monitoring until 2018 (1 additional measurement, ~70 nights)
• training data sets (stellar parameterization, asteroid taxonomy DOLORES@TNG)
• reference frame (alignment with VLBI, morphology of QSO)
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 12/22
1. Data processing and mission operations (II)
DPAC, data processing
Support networks:
• Gaia-FUN-SSO, a Gaia Follow-Up Network for the Solar System Objects• GBOT: Optical tracking• Verification of science alerts (first months of mission)
Shall small/medium telescopes become involved ? Strategic decision by the managers of ICTS
DPAC, data validation still open if auxiliary observations are needed
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 13/22
2. Science exploitation
• Gaia science is unique, very wide and even unexpected
• Complementary observations to reinforce the scientific return: photometry and spectroscopyin many cases multi-epoch observationsoptic, NIR, IR
• Rather different needs depending on the science topicongoing projects (surveys or specific objects)projects for the future
• preparing for Gaia data, and• when Gaia data will be available
(see all talks)
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 14/22
Requirements and recommendations•R=5000: for completion of the 6D phase space information for stars with 16 < G < 205·106 stars; 2-3 km/s vrad; 0.2 dex [Fe/H]
•R=20.000 spectroscopy for metal-poor disk and halo stars, dwarfs and giants, stars in nearby dwarf galaxies (large distances with 4m telescopes) and the bulge5·104 stars + 5·104 stars ; 1-2 km/s vrad; 0.1 dex [Fe/H]; /Fe
•R=40.000-60.000 multi-fibre and perhaps single slit spectroscopy of selected populations of metal-rich stars, e.g. disk and outer bulge (4-8m telescope)2·105 stars; < 0.05 dex [Fe/H]; /Fe; r-s processes
Optical + IR
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 15/22
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 16/22
GES: Gaia ESO spectroscopic survey (FLAMES@VLT) ~300 people, 300 nights in 5 years, field stars + open clusters
>105 Giraffe spectra (R ~ 16,000 - 25,000) >104 UVES spectra (R ~ 47,000)
2. Science exploitation: ongoing projects
The counterpart in the Northern hemisphere absolutely needed
There is no suitable multi-object spectrograph available Meanwhile, [email protected]+FIES@NOT (on object-by-object basis: RC in OC)
Future: WEAVE (and others) ?
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 17/22
Stellar characterization: massive, FGK, low-mass stars
massive stars GOSSS, OWN, IACOB, NoMaDS, IACOB-sweG, CAFE-beans:
LR,IR,HR + imaging Astralux FIES@NOT, HERMES@Mercator, ….
FGK stars (age, chromospheric activity, vsini, …) R ~40000 – 80000 échelle spectra
Low-mass stars Radial velocity: CAFÉ, HARPS-N, GIANO, CARMENES, … Transit: SuperWASP+, LCOGT, SONG, XO, Master
2. Science exploitation: ongoing projects
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 18/22
Characterization of galactic structures: arms, moving groups
Cygnus arm through open clustersphotometry (1-2m telescopes at CAHA+ORM)spectroscopy (NOT, WHT, INT, Haute-Provence)
Moving groups through age, chromospheric activity, chemical composition of FGK stars
R ~40000 – 80000 échelle spectra
Star forming regionsmodern wide field images in IR proper motions
Obscured massive clustersmultiplexing in the NIR at moderate resolution R=10 000 - 20 000
2. Science exploitation: ongoing projects
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 19/22
Characterization of solar system objects
Shapes, orientations and albedosphotometry at given phases
complete light curves with photometry
Taxonomy UV spectroscopy DOLORES@TNG
there is a coordination with SSO network: how can we guarantee the commitment with the network, if needed ?
2. Science exploitation: ongoing projects
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 20/22
3. Science exploitation: Future projects
during Gaia operations
• Follow-up of alerts (transients + SSOs)•Quick reaction from Spanish ICTS? •more than 34 European Observatories in the list •Spanish research groups not identified during the meeting
Shall small/medium telescopes become involved ? Strategic decision by the managers of ICTS
a significant number of time for a valid contribution
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 21/22
3. Science exploitation: Future projects• GES-like in the North
• Characterization of outliers (UaC leading the processing in DPAC)5% of sources, grouped into familiesPhotometry, intermediate and high resolution spectroscopy
• Characterization of ultra faint dwarf galaxiesDeep colour-magnitude diagram (V,I) for stellar population synthesisMOS
• Characterization of kinematic groupsMid & High resolution spect for age and detailed chemical compositionR ~20000, 40000 – 80000
• Characterization of NEAs, NEOs, asteroids photometry and UV spectroscopy
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 22/22
Discussion (I)
• To distinguish among existing and future facilities spectroscopy (no multiplexing available) FIES@NOT, CAFE@CAHA, HARPS-N at TNG,
HERMES@MERCATOR limiting magnitude V~12
clear support to WEAVE needs for R>40,000 for faint stars identified MIRADAS, MEGARA, HEXA, HORUS
• Current ongoing projects are been granted by TACs, but surveys need large projects
could ORM have guarantee time as CAHA ?Number of nights/yr (50 in CAHA: is it enough ?)
Remember: a large survey reduce costs to the ICTS
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 23/22
Discussion (II)
• The need to prepare well defined projects for the next 5-10 years was identified
• Spanish groups could join in bigger groups copying GBOG philosophy:
a set of well defined projects (number of nights, instruments, …) a common interest identified it could be the interface with the managers of RIA/ICTS
• Follow-up observations post-Gaia releases REG community should precisely define projects
Ensure that the instrumentation needed will be available at that time
• GES-North has to wait WEAVE (and others)
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 24/22
Discussion (III)
• ICTS in “danger” or unclear situation
NOT, Stella, 2.2mCAHA could Gaia community / “Gaia science case” help on this issue ? yes, look for European projects
German-Spain for CAHA Sweden-Spain for NOT
2.2m CAHA could change its regimeCould a well defined “Gaia Science Case” be elaborated by the Spanish-German
communities in the next months ? Commitments by the Scientific Community: data public & reduced in one-year (like
GES-ESO), common pipe-lines, shared toolsA “letter of support” is needed / desirable ? does REG wish to do it ?
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 25/22
Actions on us• Articulate a group of discussion within REG for:
• Reinforce coordination of current applications related with ongoing projects
• Definition and coordination of future mid- and long-term projects a GBOG-like effort (for the next 5-10 years)
• Support to the several instruments under development or in different levels of study (establishment of priorities ?)
WEAVE Spanish group (both scientific and strategic roadmap)
• Identification of instrumentation available for post-Gaia observations (beyond 2022)
• Convenience of defining a “Gaia on-ground observations road map”, accounting for different scenarios
• ICTS in “danger” or unclear situation (letters of support)
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 26/22
Contribution to next discussion
• Prepare well defined projects
• ICTS in “danger” or unclear situation (letters of support)
• Long-term projects / Legacy projectsCAHA 50 nights, enough ?which telescopes/instruments at ORM, OT, …
• Is there interest if Spanish ICTS to become part of Gaia-networks ? (mission preparation and follow-up of transients and SSOs)
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 27/22
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 28/22
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 29/22
Gaia capabilities •Positions, proper motions and parallaxes for 1 billion stars (G < 20)
•Low resolution spectrophotometry for 1 billion stars, allowing estimations of Teff, logg, Av and [Fe/H]
•Radial velocities for 150 million stars (GRVS < 17)
•Atmospheric parameters, reddening and rotational velocities for 5 million stars (GRVS < 12)
•Detailed chemical abundances for 2 million stars (GRVS < 11)
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 30/22
RVS design•R = 11500 GRVS < 10
•binning by 3 pixels GRVS > 10
•range 847-874 nm 27 nm
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 31/22
Requirements and recommendations
ASTRONET: “It is crucial to supplement the Gaia data-set with dedicated ground-based spectroscopic programmes, in order to obtain the radial velocity and detailed chemical abundances for fainter stars”
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 32/22
Current and future instrumentation•Gaia-ESO survey: 100.000 stars and 100 open clusters
UVES V < 16.5 GIRAFFE V < 19
•RAVE Ca II triplet 1 million stars
•APOGEE 300 fibres R=20.000 giants with H<13.5
•HERMES 400 fibres R=30.000 FoV=2deg2 V<14 1 million stars
•4-MOST at NTT 1500 fibres FoV=3deg2 LR+HR
•MOONS 500 fibres IR VLT -> inner disk and bulge
•WEAVE at WHT 1000 fibres FoV=2deg2 LR+HR
•LAMOST 4000 fibres FoV=5deg2 LR(+HR)
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 33/22
Star density
latitude 0-5 deg 100,000 stars /deg2 G =< 20
5-10 80,000
10-20 31,000
20-30 11,000
30-90 3,800
open clusters, globular clusters, halo streams, dwarf satellites
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 34/22
High-Res post-Gaia More spectroscopic observations of FGKs will be needed:
Large number of starsLarge number of stars
High-Res: High-Res:
But R < 20000
But only V<10-12
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REG Red Española de Gaia
La contribución de las ICTS españolas a la misión Gaia de ESA, 21-23 marzo 2012 35/22
High-Res post-Gaia More spectroscopic observations of FGKs will be needed:
High-Res & faint stars: High-Res & faint stars:
R = 40 - 80000
Large number of dataLarge number of data
North Spectroscopic survey