J/other/AstBu/72.111 Galaxies in Hercules-Bootes region (Karachentsev+, 2017)
Nearby groups of galaxies in the Hercules-Bootes constellations
Karachentsev I.D., Kashibadze O.G., Karachentseva V.E.
<Astrophys. Bull., 72, 111-121 (2017)>
=2017AstBu..72..111K 2017AstBu..72..111K (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Redshifts ; Morphology
Keywords: galaxies: kinematics and dynamics -
galaxies: distances and redshifts - galaxies: groups
Abstract:
We consider a sample of 412 galaxies with radial velocities
VLG<2500km/s situated in the sky region of RA=13.0h-19.0h,
Dec=+10°...+40° between the Local Void and the Supergalactic
plane. One hundred and eighty-one of them have individual distance
estimates. Peculiar velocities of the galaxies as a function of
Supergalactic latitude SGB show signs of Virgocentric infall at
SGB<10° and motion from the Local Void at SGB>60°. A half of
the Hercules-Bootes galaxies belong to 17 groups and 29 pairs, with
the richest group around NGC5353. A typical group is characterized by
the velocity dispersion of 67km/s, the harmonic radius of 182kpc, the
stellar mass of 4.3x1010M☉ and the virial- to-stellar mass
ratio of 32. The binary galaxies have the mean radial velocity
difference of 37km/s, the projected separation of 96kpc, the mean
integral stellar mass of 2.6x109M☉ and the mean
virial-to-stellar mass ratio of about 8. The total
dark-matter-to-stellar mass ratio in the considered sky region amounts
to 37 being almost the same as that in the Local Volume.
Description:
The table contains original observational data on 412 galaxies in the
Hercules-Bootes region with radial velocities of VLG<2500km/s.
The main source of data is the NASA Extragalactic Database (NED) with
additions from the HyperLEDA Database. Each object with a radial
velocity estimate was visually inspected, and a large number of false
"galaxies" with radial velocities of around zero was discarded.
For many galaxies, we have refined the morphological types and
integral B-magnitudes. The resulting sample includes 181 galaxies with
individual distance estimates.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
herboo.dat 66 412 Observational data on the Hercules-Bootes galaxies
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See also:
J/A+A/532/A104 : Galaxies in the Fornax cluster region (Nasonova+, 2011)
J/other/AstBu/70.1 : Galaxies in Leo/Cancer region (Karachentsev+, 2015)
Byte-by-byte Description of file: herboo.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name Galaxy name
13- 14 I2 h RAh Right ascension (J2000)
15- 16 I2 min RAm Right ascension (J2000)
17- 20 F4.1 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
24- 25 I2 arcmin DEm Declination (J2000)
26- 27 I2 arcsec DEs Declination (J2000)
29- 32 I4 km/s VLG Radial velocity relative to the Local Group
34- 37 A4 --- MType Morphological type
39- 43 F5.2 mag Bmag Integral apparent magnitude in the B-band
45- 47 I3 km/s W50 ? Half-width of the 21cm line, measured at
50% of the maximum intensity
49- 53 F5.2 mag DM ? Distance modulus
55- 57 A3 --- Method Method used to measure distance (1)
59- 66 A8 --- Group Name of the brightest galaxy in the group
to which a given galaxy belongs
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Note (1): Methods as follows:
rgb = luminosity of the tip of the red giant branch
cep = Cepheids
sbf = surface brightness fluctuations
tf = Tully-Fisher relation between W50 and the luminosity of the galaxy,
the median distance estimates adopted from NED
TF = Tully-Fisher relation, our estimates based on Tully et al.
(2009AJ....138..323T 2009AJ....138..323T)
bTF = Tully-Fisher relation, our estimates using the value m21 instead
of mB
fj = Faber-Jackson relation
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Acknowledgements:
Olga G. Kashibadze, phiruzi(at)gmail.com
(End) Patricia Vannier [CDS] 28-Apr-2017