J/MNRAS/297/885 Faint galaxies KIc photometry (Glazebrook+, 1998)
The physical parameters of the evolving population of faint galaxies
Glazebrook K., Abraham R., Santiago B., Ellis R., Griffiths R.
<Mon. Not. R. Astron. Soc. 297, 885 (1998)>
=1998MNRAS.297..885G 1998MNRAS.297..885G
ADC_Keywords: Galaxies, photometry ; Photometry, infrared ; Photometry, Cousins
Keywords: surveys - galaxies: evolution - galaxies: peculiar -
galaxies: structure - cosmology: observations
Abstract:
The excess number of blue galaxies at faint magnitudes is a subject of
much controversy. Recent Hubble Space Telescope results have revealed
a plethora of galaxies with peculiar morphologies tentatively
identified as the evolving population. We report the results of
optical spectroscopy and near-infrared photometry of a sample of faint
HST galaxies from the Medium Deep Survey to ascertain the physical
properties of the faint morphological populations. We find four
principal results. First, the population of objects classified as
'peculiar' are intrinsically luminous in the optical (MB~-19).
Secondly these systems tend to be strong sources of [OII] line
luminosity. Thirdly the optical-infrared colours of the faint
population (a) confirm the presence of a population of compact blue
galaxies and (b) show the stellar populations of irregular/peculiar
galaxies encompass a wide range in age. Finally a surface-brightness
comparison with the local galaxy sample of Freiz et al.
(1996AJ....111..174F 1996AJ....111..174F) shows that these objects are not of anomalously
low surface brightness, rather we find that all morphological classes
have evolved to a higher surface brightness at higher redshifts
(z>0.3).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 67 578 K-band UK Infrared Telescope (UKIRT) photometry
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See also:
J/ApJS/107/1 : Morphologies of distant galaxies II (Abraham+ 1996)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- [AVG96] Medium Deep Syrvey (MDS) identification
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 20 F5.2 s RAs Right ascension (J2000)
22 A1 --- DE- Declination sign (J2000)
23- 24 I2 deg DEd Declination (J2000)
26- 27 I2 arcmin DEm Declination (J2000)
29- 32 F4.1 arcsec DEs Declination (J2000)
34- 38 F5.2 mag Icmag ?=99.99 Cousins I magnitude
40- 44 F5.2 mag Kmag ? K magnitude
46- 50 F5.2 mag e_Kmag ? rms uncertainty on Kmag
51 A1 --- n_Kmag [n] n: No signal
53- 56 F4.2 --- C ? Central concentration (1)
58- 62 F5.2 --- A ? Rotational asymmetry (1)
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Note (1): A/C values of Abraham et al., 1996, Cat. J/ApJS/107/1
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History:
* 03-Dec-1999: Prepared via OCR at CDS.
* 27-Jul-2005: 5 scanning errors corrected in column "[AVG96]" of table2.
(End) James Marcout, Patricia Bauer [CDS] 03-Dec-1999