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-1274
J121812.48+053908.9
NGC4259-139 [internal use only]

Coordinates   [GALFIT]:
Equitorial 184.551987 5.652476 [deg]
12:18:12.4759 +05:39:08.914 [hms dms]
Galactic 281.233856 67.113800 [deg]

Morph: dE
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]
NGC4259 g 7 2415 1.03 707.14 Full Field
r 7 2415 0.75 1007.00
i 7 1610 0.42 1702.14

Distance Estimates

No distance estimates have been found.
We have assumed the dwarf is a satellite of NGC4259 at a distance of 37 Mpc.

Magnitudes

Galfit magnitudes
g 17.59
r 17.05
i 16.86
Extinction: SDSS MegaCam
g 0.07 0.06
r 0.05 0.05
i 0.03 0.03
SDSS values from IRSA, MegaCam values transformed following Gwyn 2008.
Surface Brightness
μ0 23.96
μRe 25.34
⟨ μRe ⟩ 24.75

Structural Parameters


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

Data Unbinned
Sersic Index 0.80
Effective Radius [arcsec]15.26
Axis Ratio 0.84
Position Angle 55.83

HI Data

No HI data was found for this dwarf.

Globular Clusters

Globular cluster candidates within 76.3 arcsec (5Re) of the dwarf:

ID RA, Dec Gaia SepSepg (g-r) (g-i) (u-g) IC
Flag [''][1/Re]
1 184.562113, 5.648534 0 38.982.5523.93±0.040.59±0.050.82±0.06 -- 0.08
2 184.550002, 5.639048 0 48.863.223.92±0.040.55±0.060.77±0.06 -- -0.05
3 184.559180, 5.637794 0 58.823.8523.28±0.020.70±0.030.99±0.03 -- -0.02

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] ['']
NGC4249 4.57 ETG 39 2618 13 10.10
NGC4257 14.14 LTG 41 2756 11 10.25
NGC4261 20.42 ETG 31 2212 38 11.38
NGC4266 23.38 LTG 17 1536 19 9.97
NGC4264 23.78 ETG 38 2518 14 10.51
NGC4259 23.99 ETG 37 2497 8 10.19
NGC4270 26.66 ETG 35 2331 16 10.79
NGC4260 31.91 LTG 38 1958 34 11.05
NGC4268 32.34 ETG 32 2034 16 10.53
NGC4281 35.86 ETG 24 2671 22 10.92