When Did the Hubble Sequence Appear?: Morphology, Color, and Number-Density Evolution of the Galaxies in the Hubble Deep Field North | Zendy

Masaru Kajisawa | Zendy; Tōru Yamada | Zendy

Open Access

When Did the Hubble Sequence Appear?: Morphology, Color, and Number-Density Evolution of the Galaxies in the Hubble Deep Field North

Author(s) -

Masaru Kajisawa,

Tōru Yamada

Publication year - 2001

Publication title -

publications of the astronomical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.99

H-Index - 110

eISSN - 2053-051X

pISSN - 0004-6264

DOI - 10.1093/pasj/53.5.833

Subject(s) - physics , astrophysics , hubble ultra deep field , hubble deep field , galaxy , redshift , astronomy , bulge , hubble's law , galaxy formation and evolution , hubble sequence

Using the HST WFPC2/NICMOS archival data of the Hubble Deep Field North, weconstruct the nearly complete sample of the Mv <-20 (~L*+1) galaxies to z=2,and investigate when the Hubble sequence appeared, namely, the evolution of themorphology, colors, and the comoving number density of the sample. Even iftaking into account of the uncertainty of the photometric redshift technique,the number density of relatively bright bulge-dominated galaxies in the HDF-Ndecrease significantly at z>1, and their rest-frame U-V color distribution iswide-spread over 0.50.3) galaxies at z>1.5, while the significant fractionof these red disk-dominated or irregular galaxies exists at z<1.5. Theseresults suggest that the significant evolution of the Hubble sequence which isseen in the present Universe occurs at 1

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