THREE DIMENSIONAL MAPS OF INTERSTELLAR MEDIUM: GAIA IMPACT Letizia - - PowerPoint PPT Presentation

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THREE DIMENSIONAL MAPS OF INTERSTELLAR MEDIUM: GAIA IMPACT Letizia - - PowerPoint PPT Presentation

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THREE DIMENSIONAL MAPS OF INTERSTELLAR MEDIUM: GAIA IMPACT Letizia Capitanio GEPI/ Observatoire de Paris R. Lallement 1 , J.L. Vergely 2 , M. Elyajouri 1 , C. Babusiaux 1 , L. Ruiz-Dern 1 , F. Arenou 1 , A. Monreal-Ibero 1,3 1) GEPI/

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SLIDE 1

THREE DIMENSIONAL MAPS OF INTERSTELLAR MEDIUM: GAIA IMPACT

  • R. Lallement1, J.L. Vergely2, M. Elyajouri1, C. Babusiaux1, L. Ruiz-Dern1, F. Arenou1,
  • A. Monreal-Ibero1,3

1) GEPI/ Observatoire de Paris, 2) ACRI/ST, Sofia-Antipolis, 3) Instituto de Astrofisica de

Canarias, La Laguna, Tenerife The science of Gaia and future challenges - LUND

3D inversion maps Since DR1 Preparation for future Letizia Capitanio

GEPI/ Observatoire de Paris

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SLIDE 2

The science of Gaia and future challenges - LUND

EXTINCTION REDDENING ABSORPTION LINES

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SLIDE 3

The science of Gaia and future challenges - LUND

RECONSTRUCTION SIGHTLINE BY SIGHTLINE

TARGET STARS IN A NARROW SOLID ANGLE

  • ASSUME ALL TARGETS ALIGNED
  • SEVERAL METHODS TO RECONSTRACT REDDENING VS

DISTANCE

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SLIDE 4

l = 160 b = -15

PAN-STARRS MAP - Green15

  • Excellent angular

resolution (5')

  • Reliable absolute data

SF2A - 4/7.07.2017 - PARIS - (3/16) The science of Gaia and future challenges - LUND

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SLIDE 5

PAN-STARRS MAP

  • Lower distance

resolution

  • No local values
  • Only north hemisphere

l = 0 l = 90

SF2A - 4/7.07.2017 - PARIS - (4/19) The science of Gaia and future challenges - LUND

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SLIDE 6

The science of Gaia and future challenges - LUND

RECONSTRUCTION SIGHTLINE BY SIGHTLINE FULL 3D INVERSION

  • E(B-V): COLUMN DENSITY
  • ρ(P) ρ(P'): 3D INFORMATION
  • PRIOR

3D DUST OPACITY DISTRIBUTION

P P'

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SLIDE 7

volumes.

  • RRRADFADF

SIMULATED 3D DISTRIBUTION (~23000 STELLAR TARGETS)

INPUT DISTRIBUTION OUTPUT MAP

  • low spatial resolution
  • spreading of opacities in large volumes
  • ortho-radial information used,
  • adapted to small distances

SF2A - 4/7.07.2017 - PARIS - (6/19) The science of Gaia and future challenges - LUND

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SLIDE 8

l = 0

l = 90

OLD MAPS - LALLEMENT2014

22467 targets 22 % Hipparcos distances 78% photometric

SF2A - 4/7.07.2017 - PARIS - (7/19) The science of Gaia and future challenges - LUND

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SLIDE 9

DR1 DISTANCES!

23444 targets ~80% Gaia TGAS distances 20% photometric

SF2A - 4/7.07.2017 - PARIS - (8/19) The science of Gaia and future challenges - LUND

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SLIDE 10

COMPARISON : OLD DISTANCES VS DR1 DISTANCES

PRE-Gaia POST-Gaia

SF2A - 4/7.07.2017 - PARIS - (9/19) The science of Gaia and future challenges - LUND

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SLIDE 11

DIBs AS MATTER TRACER?

SF2A - 4/7.07.2017 - PARIS - (11/19) The science of Gaia and future challenges - LUND

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SLIDE 12

DIBs AS MATTER TRACER?

1.02 1.00 0.98 0.96 0.94 Normalized Flux 15280 15275 15270 15265 15260 Wavelength (Å) 2MASS J00195284+5835319

Elyajouri et al.,2017

E(B-V) mag ≈ EW(Ang) * 3.3 Zasowski et al, 2015

SF2A - 4/7.07.2017 - PARIS - (10/19) The science of Gaia and future challenges - LUND

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SLIDE 13

WAITING FOR DR3 SPECTRA

~ 28000 targets ~5000 DIB-BASED EXCESS OF COLOUR

SF2A - 4/7.07.2017 - PARIS - (12/19) The science of Gaia and future challenges - LUND

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SLIDE 14

NON-LOCAL ISM: PAN-STARRS MAP

SF2A - 4/7.07.2017 - PARIS - (13/19) The science of Gaia and future challenges - LUND

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SLIDE 15

MAP with PAN-STARRS PRIOR

SF2A - 4/7.07.2017 - PARIS - (14/19) The science of Gaia and future challenges - LUND

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SLIDE 16

NEW APOGEE CALIBRATION

SF2A - 4/7.07.2017 - PARIS - (15/19) The science of Gaia and future challenges - LUND

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SLIDE 17

FROM 10 TO 10

4 6

  • 300
  • 200
  • 100

100 200 300 1000 800 600 400 200

  • 200
  • 400

160, 160,0 b=+90 b=+90

sun

  • 300
  • 200
  • 100

100 200 300 1000 800 600 400 200

  • 200
  • 400

160, 160,0 b=+90 b=+90

sun

  • 300
  • 200
  • 100

100 200 300 1000 800 600 400 200

  • 200
  • 400

160, 160,0 b=+90 b=+90

sun

  • 300
  • 200
  • 100

100 200 300 1000 800 600 400 200

  • 200
  • 400

160, 160,0 b=+90 b=+90

sun

  • 300
  • 200
  • 100

100 200 300 1000 800 600 400 200

  • 200
  • 400

160, 160,0 b=+90 b=+90

sun

PRE-GAIA POST-GAIA DIB APOGEE PANSTARRS APOGEE SPECTROPHOM ~60 000 ~23 000

GAL.%PLANE NORTH%GAL%POLE l=160°

SF2A - 4/7.07.2017 - PARIS - (16/19) The science of Gaia and future challenges - LUND

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SLIDE 18

FROM 10 TO 10

4 6

  • 300
  • 200
  • 100

100 200 300 1000 800 600 400 200

  • 200
  • 400
  • 300
  • 200
  • 100

100 200 300 1000 800 600 400 200

  • 200
  • 400

WITH 20 000 LAMOST dist/extinction 0°> b >-35° 155°>l>180° Wang et al, 2016

SF2A - 4/7.07.2017 - PARIS - (17/19) The science of Gaia and future challenges - LUND

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SLIDE 19
  • n-line TOOL: stilism.obspm.fr

SF2A - 4/7.07.2017 - PARIS - (18/19) The science of Gaia and future challenges - LUND

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SLIDE 20

PRE-GAIA

POST:

  • GAIA DISTANCES
  • DIB APOGEE (WITH GAIA DISTANCES)
  • PRIOR
  • POST-GAIA APOGEE CALIBRATION

FUTURE...

SF2A - 4/7.07.2017 - PARIS - (19/19) The science of Gaia and future challenges - LUND