J/MNRAS/470/1512 Faint LSB galaxy cand. in Perseus cluster (Wittmann+, 2017)
A population of faint low surface brightness galaxies in the Perseus cluster
core.
Wittmann C., Lisker T., Ambachew Tilahun L., Grebel E.K., Conselice C.J.,
Penny S., Janz J., Gallagher J.S., Kotulla R., Mccormac J.
<Mon. Not. R. Astron. Soc., 470, 1512-1525 (2017)>
=2017MNRAS.470.1512W 2017MNRAS.470.1512W (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, photometry; Clusters, galaxy; Photometry, UBV;
Reddening
Keywords: galaxies: clusters: Perseus
galaxies: dwarf; galaxies: evolution; galaxies: fundamental parameters
galaxies: photometry
Abstract:
We present the detection of 89 low surface brightness (LSB), and thus
low stellar density galaxy candidates in the Perseus cluster core, of
the kind named 'ultra-diffuse galaxies', with mean effective V-band
surface brightnesses 24.8-27.1mag/arcsec2, total V-band magnitudes
-11.8 to -15.5mag, and half-light radii 0.7-4.1kpc. The candidates
have been identified in a deep mosaic covering 0.3deg2, based on
wide-field imaging data obtained with the William Herschel Telescope.
We find that the LSB galaxy population is depleted in the cluster
centre and only very few LSB candidates have half-light radii larger
than 3kpc. This appears consistent with an estimate of their tidal
radius, which does not reach beyond the stellar extent even if we
assume a high dark matter content (M/L=100). In fact, three of our
candidates seem to be associated with tidal streams, which points to
their current disruption. Given that published data on faint LSB
candidates in the Coma cluster --with its comparable central density
to Perseus-- show the same dearth of large objects in the core region,
we conclude that these cannot survive the strong tides in the centres
of massive clusters.
Description:
We acquired deep V-band imaging data of the Perseus cluster core with
PFIP at the WHT through the Opticon programme 2012B/045 (PI T. Lisker).
The PFIP is an optical wide-field imaging camera with a field of view
of 16x16arcmin2, corresponding to 325x325kpc2 at the distance of
Perseus. The observations were carried out 2012 November 12 and 13. We
performed dithered observations on three pointings across the cluster
core, with individual exposure times of 120s. In total, 187 science
exposures contribute to the final mosaic.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 89 *Coordinates and structure parameters of faint
low surface brightness (LSB) galaxy candidates
in the Perseus cluster core
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Note on table1.dat: No reliable individual errors can be provided, but the
right-hand panels in Fig. 6 illustrate the statistical and systematic
uncertainties for the LSB galaxy models in the parameter range of our
sample; details are provided in Section 5.3.
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See also:
V/139 : The SDSS Photometric Catalog, Release 9 (Ahn, 2012)
J/AJ/90/1681 : The Virgo Cluster Catalog (VCC) (Binggeli+, 1985)
J/ApJS/105/209 : Low surface brightness galaxies. I. (Impey+, 1996)
J/A+AS/126/67 : Coma and Perseus clusters galaxies (Andreon+ 1997)
J/AJ/127/704 : Low surface brightness galaxies in SDSS (Kniazev+, 2004)
J/AJ/130/873 : BQS objects in the SDSS DR3 area (Jester+, 2005)
J/A+A/459/679 : RB photometry of LSBG in Coma (Adami+, 2006)
J/A+A/534/A109 : MCXC Meta-Catalogue X-ray galaxy Clusters (Piffaretti+, 2011)
J/A+A/538/A69 : Virgo early-type galaxies optical properties (Lieder+, 2012)
J/MNRAS/422/885 : Ultracompact dwarf galaxies in Perseus (Penny+, 2012)
J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie, 2012)
J/ApJ/813/L15 : Dwarf galaxies in Fornax cluster from NGFS (Munoz+, 2015)
J/ApJS/225/11 : Subaru-UDGs in the Coma cluster (Yagi+, 2016)
J/A+A/593/A126 : Malin 1 images at 6 wavelengths (Boissier+, 2016)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [WLA2017] [1/89] Identifier
4- 5 I2 h RAh Hour of right ascension (J2000)
7- 8 I2 min RAm Minute of right ascension (J2000)
10- 14 F5.2 s RAs Second of right ascension (J2000)
16 A1 --- DE- Sign of declination (J2000)
17- 18 I2 deg DEd Degree of declination (J2000)
20- 21 I2 arcmin DEm Arcminute of declination (J2000)
23- 26 F4.1 arcsec DEs Arcsecond of declination (J2000)
28- 31 F4.1 mag/arcsec2 muV50 [24.8/27.1] V-band mean effective surface
brightness corrected for Galactic
foreground extinction (<µV>50)
33- 37 F5.1 mag VMag [-15.5/-11.8] Absolute V-band magnitude
corrected for Galactic foreground
extinction (MV)
39- 41 F3.1 mag Av [0.4/0.5] V-band extinction (1)
43- 45 F3.1 kpc r50 [0.7/4.1] Half-light radius
47- 50 F4.2 --- ell [0.01/0.34] Ellipticity
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Note (1): AV is derived from the reddening maps of
Schlafly & Finkbeiner (2011ApJ...737..103S 2011ApJ...737..103S).
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 30-Mar-2020