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-368
J082217.54+225430.9
NGC2577-110 [internal use only]

Coordinates   [GALFIT]:
Equitorial 125.573082 22.908594 [deg]
08:22:17.5398 +22:54:30.9406 [hms dms]
Galactic 200.696548 29.606434 [deg]

Morph: dEN
Notes: 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]
NGC2577 g 7 2415 0.69 1007.00 Full Field
r 7 2415 0.66 1060.57
i 7 1610 0.55 1534.00

Distance Estimates

No distance estimates have been found.
We have assumed the dwarf is a satellite of NGC2577 at a distance of 31 Mpc.

Magnitudes

Galfit magnitudes
g 18.83
r 18.07
i 17.95
Extinction: SDSS MegaCam
g 0.12 0.12
r 0.09 0.09
i 0.06 0.06
SDSS values from IRSA, MegaCam values transformed following Gwyn 2008.
Surface Brightness
μ0 24.50
μRe 25.88
⟨ μRe ⟩ 25.28

Structural Parameters


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

Data Unbinned
Sersic Index 1.13
Effective Radius [arcsec]11.03
Axis Ratio 0.90
Position Angle 77.78

Properties of the nucleus

RA, Dec [deg]125.5728, 22.9084
offset [arcsec]1.81

The nucleus was not well modeled by Galfit. However, the coordinates were either: (a) extracted from Galfit if the model was centered, or (b) determined manually with ds9.

HI Data

No HI data was found for this dwarf.

Globular Clusters

Globular cluster candidates within 55.15 arcsec (5Re) of the dwarf:

ID RA, Dec Gaia SepSepg (g-r) (g-i) (u-g) IC
Flag [''][1/Re]
1 125.572964, 22.908276 0 1.210.1121.80±0.010.59±0.010.87±0.01 -- -0.01
2 125.577651, 22.900702 0 32.212.9218.83±0.000.55±0.000.78±0.00 -- 0.00
3 125.581072, 22.917894 0 42.703.8722.24±0.010.46±0.010.66±0.01 -- 0.00

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] ['']
UGC04375 19.18 LTG 31 2061 37 10.49
NGC2577 22.16 ETG 31 2062 14 10.68
NGC2594 190.83 ETG 35 2362 7 10.26
NGC2592 195.24 ETG 25 1979 12 10.46
NGC2481 348.99 ETG 32 2157 10 10.66
UGC04559 522.35 LTG 32 2085 14 10.31
UGC03960 578.61 ETG 33 2255 17 10.07
NGC2735 580.04 LTG 37 2450 10 10.52
NGC2648 592.75 LTG 30 2060 17 10.82
NGC2750 614.17 LTG 39 2674 37 10.64