A z = 1.82 Analog of Local Ultra-massive Elliptical Galaxies

A z = 1.82 Analog of Local Ultra-massive Elliptical Galaxies

We present observations of a very massive galaxy at $z$=1.82 which show that its morphology, size, velocity dispersion and stellar population properties that are fully consistent with those expected for passively evolving progenitors of today's giant ellipticals. These findings are based on a d...

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Veröffentlicht in:Astrophysical journal. Letters 2010-05, Vol.715 (1), p.L6-L11
Hauptverfasser: Onodera, M, Daddi, E, Gobat, R, Cappellari, M, Arimoto, N, Renzini, A, Yamada, Y, McCracken, H. J, Mancini, C, Capak, P, Carollo, M, Cimatti, A, Giavalisco, M, Ilbert, O, Kong, X, Lilly, S, Motohara, K, Ohta, K, Sanders, D. B, Scoville, N, Tamura, N, Taniguchi, Y
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CAMERAS
ENERGY SPECTRA
EQUATIONS
EVOLUTION
Galactic Astrophysics
GALACTIC EVOLUTION
GALAXIES
MASS
MORPHOLOGY
Physics
RED SHIFT
Sciences of the Universe
SIMULATION
SPECTRA
STARS
TELESCOPES
UNIVERSE
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Beschreibung
Zusammenfassung:We present observations of a very massive galaxy at $z$=1.82 which show that its morphology, size, velocity dispersion and stellar population properties that are fully consistent with those expected for passively evolving progenitors of today's giant ellipticals. These findings are based on a deep optical rest-frame spectrum obtained with the Multi-Object InfraRed Camera and Spectrograph (MOIRCS) on the Subaru telescope of a high-$z$ passive galaxy candidate (pBzK) from the COSMOS field, for which we accurately measure its redshift of $z$=1.8230 and obtain an upper limit on its velocity dispersion $\sigma$$_ \star$
ISSN:2041-8205
2041-8213
DOI:10.1088/2041-8205/715/1/L6