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HST IMAGING OF GALAXIES IN A SUPER-GROUP AT Z~0.37
HST IMAGING OF GALAXIES IN A SUPER-GROUP AT Z~0.37

HST IMAGING OF GALAXIES IN A SUPER-GROUP AT Z~0.37 - PowerPoint Presentation

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HST IMAGING OF GALAXIES IN A SUPER-GROUP AT Z~0.37 - Description

Jonathan Monroe Supervisor DrKimVy Tran Texas AampM University IntroductionGoals Data WFC3UVIS F390W F814W 17 10 pointings ACSWFC F606W 17 pointings 10 x 5 mosaic of 4 groups w 170 members spectraconfirmed ID: 540499 Download Presentation

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f390w obj f606w f814w obj f390w f814w f606w 370 rgb 368 color wcs late alignment 374 mosaic 376 type

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Presentation on theme: "HST IMAGING OF GALAXIES IN A SUPER-GROUP AT Z~0.37"— Presentation transcript

Slide1

HST IMAGING OF GALAXIES IN A SUPER-GROUP AT Z~0.37

Jonathan MonroeSupervisor: Dr.Kim-Vy TranTexas A&M UniversitySlide2

Introduction/Goals

DataWFC3/UVIS: F390W + F814W (17 +10 pointings)

ACS/WFC : F606W (17 pointings)

~10’ x 5’ mosaic of 4 groups w/ ~ 170 members (spectra-confirmed)

WCS + pixel alignment >> SExtractor for color analysisHoping to find “Fireball” or “Jellyfish” deformations

Roediger et al 2014

Owers et al 2012

Kenney et al 2013Slide3

Motivation

Intragroup medium interaction

Ram pressure stripping

Induced morphological deformation

Slide4

Drizzlepac suite (STScI)

AstroDrizzle (Drizzle algorithm)TweakReg

tweakback

Astromatic (Emmanuel Bertin)

SWarpSExtractor

Tools

http://www.astromatic.net/software/sextractor

http://www.stsci.edu/ftp/science/hdf/combination/drizzle.htmlSlide5

WCS alignment >> mosaic

1’

N

ESlide6

Curve of Growth

obj 5

obj 2

obj 1

obj 3

obj 4

Calibrate PSF

Compact, bright objects (stars)

Tight fit

Slide7

Color Magnitude

2”

z = 0.376

2”

z = 0.374

1

2

2

1Slide8

Early type distribution

obj 4 late

obj 20

obj 8

2”

z = 0.375

2”

z = 0.370

RGB = F814W, F606W, F390W

z = 0.372

2”

2”

z = 0.372Slide9

obj 14

Late type distribution

obj 10

2”

z = 0.371

2”

z = 0.369

2”

z = 0.368

obj 12

2”

z = 0.377

RGB = F814W, F606W, F390WSlide10

Conclusions

WCS (+image) aligned ✓Basic data quality analysis

Fireballs? Jellyfish?

z = -

z = 0.368

=

=Slide11

Proof of Concept

2”

2”

2”

z = 0.109

z = 0.370

2”

z = 0.374

z = 0.375

RGB = F814W, F606W, F390WSlide12

Future Study

2”

2”

z = 0.377

2”

z = 0.370

z = 0.376

2”

z = 0.369

2”

0.5”

z = -

z = 0.368

2”

2”

z = 0.368

z = 0.370

RGB = F814W, F606W, F390WSlide13

Curve of Growth

obj 5

obj 2

obj 1

obj 3

obj 4Slide14

UVJ Diagram

Quiescent

Star FormingSlide15

Sersic Indix (n) vs

dproj

 Slide16

Color Gradients