Radio-loud high-redshift protogalaxy candidates in botes

Steve Croft; Wil Van Breugel; Michael J.I. Brown; Wim De Vries; Arjun Dey; Peter Eisenhardt; Buell Jannuzi; Huub Röttgering; S. A. Stanford; Daniel Stern; S. P. Willner

doi:10.1088/0004-6256/135/5/1793

Radio-loud high-redshift protogalaxy candidates in botes

Steve Croft
, Wil Van Breugel
, Michael J.I. Brown
, Wim De Vries
, Arjun Dey
, Peter Eisenhardt
, Buell Jannuzi
, Huub Röttgering
, S. A. Stanford
, Daniel Stern
, S. P. Willner

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We used the Near Infrared Camera on Keck I to obtain K_s -band images of four candidate high-redshift radio galaxies selected using optical and radio data in the NOAO Deep Wide-Field Survey in Boötes. Our targets have 1.4 GHz radio flux densities greater than 1 mJy, but are undetected in the optical to ≳24 Vega mag. Spectral energy distribution fitting suggests that three of these objects are at z > 3, with radio luminosities near the FR-I/FR-II break. The other has photometric redshift z _phot = 1.2, but may in fact be at higher redshift. Two of the four objects exhibit diffuse morphologies in K_s -band, suggesting that they are still in the process of forming.

Original language	English (US)
Pages (from-to)	1793-1802
Number of pages	10
Journal	Astronomical Journal
Volume	135
Issue number	5
DOIs	https://doi.org/10.1088/0004-6256/135/5/1793
State	Published - May 1 2008
Externally published	Yes

Keywords

Galaxies: active
Galaxies: high-redshift
Galaxies: starburst
Infrared: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-6256/135/5/1793

Cite this

@article{ad3247d6308d4a02877d85de5169d5ae,

title = "Radio-loud high-redshift protogalaxy candidates in botes",

abstract = "We used the Near Infrared Camera on Keck I to obtain Ks -band images of four candidate high-redshift radio galaxies selected using optical and radio data in the NOAO Deep Wide-Field Survey in Bo{\"o}tes. Our targets have 1.4 GHz radio flux densities greater than 1 mJy, but are undetected in the optical to ≳24 Vega mag. Spectral energy distribution fitting suggests that three of these objects are at z > 3, with radio luminosities near the FR-I/FR-II break. The other has photometric redshift z phot = 1.2, but may in fact be at higher redshift. Two of the four objects exhibit diffuse morphologies in Ks -band, suggesting that they are still in the process of forming.",

keywords = "Galaxies: active, Galaxies: high-redshift, Galaxies: starburst, Infrared: galaxies",

author = "Steve Croft and \{Van Breugel\}, Wil and Brown, \{Michael J.I.\} and \{De Vries\}, Wim and Arjun Dey and Peter Eisenhardt and Buell Jannuzi and Huub R{\"o}ttgering and Stanford, \{S. A.\} and Daniel Stern and Willner, \{S. P.\}",

year = "2008",

month = may,

day = "1",

doi = "10.1088/0004-6256/135/5/1793",

language = "English (US)",

volume = "135",

pages = "1793--1802",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "5",

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TY - JOUR

T1 - Radio-loud high-redshift protogalaxy candidates in botes

AU - Croft, Steve

AU - Van Breugel, Wil

AU - Brown, Michael J.I.

AU - De Vries, Wim

AU - Dey, Arjun

AU - Eisenhardt, Peter

AU - Jannuzi, Buell

AU - Röttgering, Huub

AU - Stanford, S. A.

AU - Stern, Daniel

AU - Willner, S. P.

PY - 2008/5/1

Y1 - 2008/5/1

N2 - We used the Near Infrared Camera on Keck I to obtain Ks -band images of four candidate high-redshift radio galaxies selected using optical and radio data in the NOAO Deep Wide-Field Survey in Boötes. Our targets have 1.4 GHz radio flux densities greater than 1 mJy, but are undetected in the optical to ≳24 Vega mag. Spectral energy distribution fitting suggests that three of these objects are at z > 3, with radio luminosities near the FR-I/FR-II break. The other has photometric redshift z phot = 1.2, but may in fact be at higher redshift. Two of the four objects exhibit diffuse morphologies in Ks -band, suggesting that they are still in the process of forming.

AB - We used the Near Infrared Camera on Keck I to obtain Ks -band images of four candidate high-redshift radio galaxies selected using optical and radio data in the NOAO Deep Wide-Field Survey in Boötes. Our targets have 1.4 GHz radio flux densities greater than 1 mJy, but are undetected in the optical to ≳24 Vega mag. Spectral energy distribution fitting suggests that three of these objects are at z > 3, with radio luminosities near the FR-I/FR-II break. The other has photometric redshift z phot = 1.2, but may in fact be at higher redshift. Two of the four objects exhibit diffuse morphologies in Ks -band, suggesting that they are still in the process of forming.

KW - Galaxies: active

KW - Galaxies: high-redshift

KW - Galaxies: starburst

KW - Infrared: galaxies

UR - https://www.scopus.com/pages/publications/50849097886

UR - https://www.scopus.com/pages/publications/50849097886#tab=citedBy

U2 - 10.1088/0004-6256/135/5/1793

DO - 10.1088/0004-6256/135/5/1793

M3 - Article

AN - SCOPUS:50849097886

SN - 0004-6256

VL - 135

SP - 1793

EP - 1802

JO - Astronomical Journal

JF - Astronomical Journal

IS - 5

ER -

Radio-loud high-redshift protogalaxy candidates in botes

Abstract

Keywords

ASJC Scopus subject areas

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