MATLAS dwarfs - properties of individual galaxies



dwarf, stretch 1, BW dwarf, stretch 2, color dwarf, stretch 3, BW The galaxy at three different stretches.


Basic Information

IDs: MATLAS-1824
J141856.08+362859.5
NGC5557-83 [internal use only]

Coordinates   [GALFIT]:
Equitorial 214.733673 36.483196 [deg]
14:18:56.0829 +36:28:59.5061 [hms dms]
Galactic 65.173531 69.257500 [deg]

Morph: dE
Notes: This galaxy is a tidal dwarf candidate.
This galaxy is a UDG candidate.

This galaxy can be found in the following image:

Field Filter Nexp Texp IQ Background Image Link
[s] [''] [ADUs]
NGC5557 g 6 2070 1.37 190.67 Full Field
r 6 2070 1.12 364.50
i 6 1380 0.95 621.17

Distance Estimates

Source Measurement Notes Dist
WRST HI v = 3181.00±8.000 km/s SNR = 15.50 dhf = 46.33 Mpc


Magnitudes

Galfit magnitudes
g 18.44
r 18.37
i 18.35
Extinction: SDSS MegaCam
g 0.03 0.03
r 0.02 0.02
i 0.02 0.02
SDSS values from IRSA, MegaCam values transformed following Gwyn 2008.
Surface Brightness
μ0 24.36
μRe 25.74
⟨ μRe ⟩ 25.14

Structural Parameters


Galfit modeling, input
  Cleaned input image
Galfit modeling, model
  Galfit model
Galfit modeling, residual
  Residual image

Data Unbinned
Sersic Index 0.85
Effective Radius [arcsec]12.37
Axis Ratio 0.66
Position Angle 72.74

HI Data

ATLAS3D
W50 [km/s]25.0000
SNR15.50
Derived Parameters:
FHI [Jy-km/s]0.2200 ± 0.03
logMHI [M☉]8.06 ± 0.07
logMdyn [M☉]8.71
MHI/LB1.9800

Globular Clusters

Globular cluster candidates within 61.85 arcsec (5Re) of the dwarf:

ID RA, Dec Gaia SepSepg (g-r) (g-i) (u-g) IC
Flag [''][1/Re]
1 214.748183, 36.491401 0 51.334.1523.89±0.050.35±0.080.73±0.09 -- 0.07

Local Environment

The ten nearest on-sky neighbors from ATLAS3D parent (ETG+LTG) catalog:

Galaxy separation Morph Dist Vel Re log(M*/M☉)
['] [Mpc] [km/s] ['']
NGC5557 6.14 ETG 39 3219 29 11.26
NGC5582 193.77 ETG 28 1430 28 10.62
NGC5611 215.66 ETG 25 1968 10 10.19
NGC5630 303.83 LTG 41 2655 19 10.21
NGC5346 357.9 LTG 39 2519 22 10.04
UGC09519 358.18 ETG 28 1631 7 10.10
NGC5347 362.51 LTG 37 2335 27 10.59
NGC5371 362.68 LTG 31 2558 69 11.26
NGC5358 370.97 ETG 38 2412 11 10.12
NGC5355 375.43 ETG 37 2344 11 10.27