The SLUGGS survey: a new mask design to reconstruct the stellar populations and kinematics of both inner and outer galaxy regions

Pastorello, Nicola, Forbes, Duncan A, Poci, Adriano, Romanowsky, Aaron J, McDermid, Richard, Alabi, Adebusola B, Brodie, Jean P, Cappellari, Michele, Pota, Vincenzo and Foster, Caroline 2016, The SLUGGS survey: a new mask design to reconstruct the stellar populations and kinematics of both inner and outer galaxy regions, Publications of the astronomical society of Australia, vol. 33, pp. 1-16, doi: 10.1017/pasa.2016.29.

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Title The SLUGGS survey: a new mask design to reconstruct the stellar populations and kinematics of both inner and outer galaxy regions
Author(s) Pastorello, NicolaORCID iD for Pastorello, Nicola
Forbes, Duncan A
Poci, Adriano
Romanowsky, Aaron J
McDermid, Richard
Alabi, Adebusola B
Brodie, Jean P
Cappellari, Michele
Pota, Vincenzo
Foster, Caroline
Journal name Publications of the astronomical society of Australia
Volume number 33
Start page 1
End page 16
Total pages 16
Publisher Cambridge University Press
Place of publication Cambridge, Eng.
Publication date 2016-08-22
ISSN 1323-3580
Keyword(s) galaxies
abundances – galaxies
NGC 1023 – galaxies
kinematics and dynamics – methods
observational – techniques
Summary Integral field unit spectrographs allow the 2D exploration of the kinematics and stellar populations of galaxies, although they are generally restricted to small fields-of-view. Using the large field-of-view of the DEIMOS multislit spectrograph on Keck and our Stellar Kinematics using Multiple Slits technique, we are able to extract sky-subtracted stellar light spectra to large galactocentric radii. Here, we present a new DEIMOS mask design named SuperSKiMS that explores large spatial scales without sacrificing high spatial sampling. We simulate a set of observations with such a mask design on the nearby galaxy NGC 1023, measuring stellar kinematics and metallicities out to where the galaxy surface brightness is orders of magnitude fainter than the sky. With this technique we also reproduce the results from literature integral field spectroscopy in the innermost galaxy regions. In particular, we use the simulated NGC 1023 kinematics to model its total mass distribution to large radii, obtaining comparable results with those from published integral field unit observation. Finally, from new spectra of NGC 1023, we obtain stellar 2D kinematics and metallicity distributions that show good agreement with integral field spectroscopy results in the overlapping regions. In particular, we do not find a significant offset between our Stellar Kinematics using Multiple Slits and the ATLAS3D stellar velocity dispersion at the same spatial locations.
Language eng
DOI 10.1017/pasa.2016.29
Field of Research 020103 Cosmology and Extragalactic Astronomy
089999 Information and Computing Sciences not elsewhere classified
Socio Economic Objective 970108 Expanding Knowledge in the Information and Computing Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID DP130100388
Copyright notice ©2016, Cambridge University Press
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Document type: Journal Article
Collection: School of Information Technology
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