J/MNRAS/476/4488 LSBG HI and optical properties (Honey+, 2018)
A study of the H I and optical properties of Low Surface Brightness galaxies:
spirals, dwarfs, and irregulars.
Honey M., Van Driel W., Das M., Martin J.-M.
<Mon. Not. R. Astron. Soc., 476, 4488-4500 (2018)>
=2018MNRAS.476.4488H 2018MNRAS.476.4488H (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; H I data ; Optical ; Morphology
Keywords: galaxies: evolution - galaxies: general - galaxies: spiral -
galaxies: structure - radio lines: galaxies
Abstract:
We present a study of the HI and optical properties of nearby
(z≤0.1) Low Surface Brightness galaxies (LSBGs). We started with a
literature sample of ∼900 LSBGs and divided them into three
morphological classes: spirals, irregulars, and dwarfs. Of these, we
could use ∼490 LSBGs to study their HI and stellar masses, colours,
and colour-magnitude diagrams, and local environment, compare them
with normal, High Surface Brightness (HSB) galaxies and determine the
differences between the three morphological classes. We found that LSB
and HSB galaxies span a similar range in HI and stellar masses, and
have a similar MHI/M*-M* relationship. Among the
LSBGs, as expected, the spirals have the highest average HI and
stellar masses, both of about 109.8M☉. The LSGBs' (g-r)
integrated colour is nearly constant as function of HI mass for all
classes. In the colour-magnitude diagram, the spirals are spread over
the red and blue regions whereas the irregulars and dwarfs are
confined to the blue region. The spirals also exhibit a steeper slope
in the MHI/M*-M* plane. Within their local
environment, we confirmed that LSBGs are more isolated than HSB
galaxies, and LSB spirals more isolated than irregulars and dwarfs.
Kolmogorov-Smirnov statistical tests on the HI mass, stellar mass, and
number of neighbours indicate that the spirals are a statistically
different population from the dwarfs and irregulars. This suggests
that the spirals may have different formation and HI evolution than
the dwarfs and irregulars.
Description:
Our initial sample consists of the total of 897 objects listed in the
LSB galaxy catalogues of Schombert & Bothun (1988AJ.....95.1389S 1988AJ.....95.1389S),
Schombert et al. (1992AJ....103.1107S 1992AJ....103.1107S), and Impey et al.
(1996ApJS..105..209I 1996ApJS..105..209I, Cat. J/ApJS/105/209).
Table 1 includes centre positions, redshifts, and optical
morphological classification of the sample galaxies using the NASA
Extragalactic Database (NED).1 We included the following NED
morphological classifications in our three classes: Sa, Sb, Sc, Sd,
and Sm for the spirals, Im and Irr for the irregulars, and dE, dI, and
dm for the dwarfs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 128 897 Global properties of the LSBGs in the initial
sample of 897 galaxies
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See also:
J/ApJS/105/209 : Low surface brightness galaxies. I. The catalog (Impey+ 1996)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 I1 --- Group [1/2] with HI detections (1) or
without HI data (2)
3- 15 A13 --- Name Galaxy name
19- 20 I2 h RAh Right ascension (J2000.0)
22- 23 I2 min RAm Right ascension (J2000.0)
25- 29 F5.2 s RAs Right ascension (J2000.0)
31 A1 --- DE- Declination sign (J2000.0)
32- 33 I2 deg DEd Declination (J2000.0)
35- 36 I2 arcmin DEm Declination (J2000.0)
38- 41 F4.1 arcsec DEs Declination (J2000.0)
43- 48 F6.1 Mpc D ?=- Distance (1)
50- 67 A18 -- Morph Optical morphological classification,
taken from NED
69- 84 A16 --- Class morphological class (2)
86- 90 F5.2 Jy.km/s FHI ?=- Integrated HI line flux
92- 96 F5.2 [Msun] logMHI ?=- Total HI mass
98-103 F6.2 mag rMAG ?=- Absolute r-band magnitude corrected for
Galactic extinction (3)
105-109 F5.2 mag g-r ?=- Integrated g-r colour corrected for
Galactic extinction (3)
111-115 F5.2 [Msun] logMstar ?=- Stellar mass
117-119 I3 --- Iso ?=- Number of near neighbours within 1Mpc
radius and ±500km/s from the systemic
velocity of the target galaxy
121-128 A8 -- Flag Flag (bad, good or not used) (4)
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Note (1): distance = V/H0, where V is the heliocentric radial velocity in
km/s, for a Hubble constant H0=70km/s/Mpc.
Note (2): global optical morphological class (spiral, irregular, and dwarf),
based on our visual inspection of SDSS DR12 images.
Note (3): following Schlegel, Finkbeiner & Davis (1998ApJ...500..525S 1998ApJ...500..525S),
as also used by SDSS DR12.
Note (4): Flag as follows:
good = no BADSKY, BRIGHT, NOPROFILE, SATURATED, SUSPICIOUS DETECTIONS
(like cosmic ray or CCD artefact-MAYBE-CR, MAYBE-EGHOST), or
INTERPOLATION ERRORS (PSF-FLUX-INTERP)
bad = target has (at least) one of these flags (BADSKY, BRIGHT,
NOPROFILE, SATURATED, SUSPICIOUS DETECTIONS,
INTERPOLATION ERRORS)
not used = either not included in Sample I (see Section 2) or fainter than
the absolute magnitude limit Mr=-14mag (see Section 3.2.2).
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 27-Apr-2021