APEX Extragalactic Surveys Attila Kovcs The Case for APEX in the - - PowerPoint PPT Presentation

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APEX Extragalactic Surveys Attila Kovcs The Case for APEX in the - - PowerPoint PPT Presentation

Sep 25, 2022 39 likes •591 views

APEX Extragalactic Surveys Attila Kovcs The Case for APEX in the ALMA Era Zero Spacing APEX Beam is larger than ALMA FOV Arrays 50 pixels in FOV = 50 antennas in mapping speed Bolometers Larger bandwidth Outline CO Surveys SZ Survey

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APEX Extragalactic Surveys

Attila Kovács

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The Case for APEX in the ALMA Era

Zero Spacing

APEX Beam is larger than ALMA FOV

Arrays

50 pixels in FOV = 50 antennas in mapping speed

Bolometers

Larger bandwidth

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Outline

CO Surveys SZ Survey Chandra Deep Field COSMOS Field Nearby Galaxies in Continuum

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Outline

CO Surveys SZ Survey (Frank Bertoldi) Chandra Deep Field COSMOS Field Nearby Galaxies in Continuum

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Outline

CO Surveys SZ Survey (Frank Bertoldi) Chandra Deep Field (Ian Smail) COSMOS Field Nearby Galaxies in Continuum

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Outline

CO Surveys SZ Survey (Frank Bertoldi) Chandra Deep Field (Ian Smail) COSMOS Field (Eva Schinnerer) Nearby Galaxies in Continuum

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SLIDE 8

Outline

CO Surveys SZ Survey (Frank Bertoldi) Chandra Deep Field (Ian Smail) COSMOS Field (Eva Schinnerer) Nearby Galaxies in Continuum

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Outline

CO Surveys SZ Survey (Frank Bertoldi) Chandra Deep Field (Ian Smail) COSMOS Field (Eva Schinnerer) Nearby Galaxies in Continuum

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Tkin ~ 30-50 K (Tdust ~ 30-50 K) n(H2) ~ 10 2.7-3.5 cm-3 Tkin ~40 – 60 K (Tdust ~ 50 K) n(H2) ~ 10 3.6-4.3cm-3 Tkin ~ 200 K (Tdust ~ 200 K) n(H2) ~ 10 4.2 cm-3 Strongly lensed (m=80-100) central ~200pc surrounding the QSO. AGN heating!

  • A. Weiss

Survey of Active Galaxy Centers

  • R. Guesten et al.
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diffuse dense center diffuse total

CO(1-0)

  • A. Weiss

Survey of Nearby Galaxies

  • A. Weiss
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CHAMP+ Array Receiver

7 beams at 650 GHz

+

7 beams at 800 GHz

SRON & MPIfR

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Ruediger Kneissl

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Ruediger Kneissl

APEX SZ Camera (ASZCA)

UC Berkeley

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Ruediger Kneissl

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Ruediger Kneissl

APEX SZ Pixel Gains and Sensitivities

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Ruediger Kneissl

APEX SZ Beam Pattern

Underilluminated Primary (60' FWHM) Pattern in line with expectations...

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Ruediger Kneissl

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Ruediger Kneissl

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LABOCA

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LABOCA

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LABOCA

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LABOCA

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LABOCA

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LABOCA

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LABOCA

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LABOCA

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LABOCA

NEFD 40-75 mJy/beam s1/2

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LABOCA Science Case: Deep Fields

Collecting photons -- The more pixels the better...

SCUBA SHARC-2 LABOCA SCUBA-2 37 384 295 8000+

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The Chandra Deep Field South (CDFS)

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The Chandra Deep Field South (CDFS)

Very Low HI Column Densities

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CDFS

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LABOCA CDFS at 850um...

0.5 deg

200 h scheduled 100 h complete 1.7 mJy RMS Goal: 1 mJy RMS

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After 100 hours 0.5 deg x 0.5 deg area with uniform coverage 1.7 – 2.0 mJy/beam rms

LABOCA CDFS at 850um...

(CRUSH Reduction)

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Scanning Strategy: A Raster of Spirals

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LABOCA CDFS: Map Noise Distribution

Noise is extremely consistent with Gaussian with an expected tail at positive fluxes due to resolved and unresolved sources...

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The COSMOS Field

Submm Galaxies and Large Scale Structure

2 sq. deg 3 mJy/beam RMS

  • F. Bertoldi
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The COSMOS Field

  • F. Bertoldi

MAMBO (1.2 mm) 1 mJy/beam RMS

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SCUBA

SHARC 2

SCUBA 2 LABOCA

11'

Need Large Field-of-View

LABOCA Science Case: Large Scale Mapping

(350um)

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Cen A

  • A. Weiss
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Cen A

  • A. Weiss
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Cen A

  • A. Weiss

LABOCA radio HI

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Cen A

  • A. Weiss
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NGC 4945

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NGC 253

5' 2 mJy/beam RMS

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NGC 253

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NGC 253

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NGC 253

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