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-1494
J124723.24-012416.2
NGC4690-121 [internal use only]

Coordinates   [GALFIT]:
Equitorial 191.846848 -1.404494 [deg]
12:47:23.2417 -01:24:16.1787 [hms dms]
Galactic 300.813324 61.450588 [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]
NGC4690 g 7 2415 0.62 780.43 Full Field
r 7 2415 0.64 1144.71

Distance Estimates

No distance estimates have been found.
We have assumed the dwarf is a satellite of NGC4690 at a distance of 40 Mpc.

Magnitudes

Galfit magnitudes
g 18.83
r 18.30
Extinction: SDSS MegaCam
g 0.08 0.08
r 0.06 0.06
i 0.04 0.04
SDSS values from IRSA, MegaCam values transformed following Gwyn 2008.
Surface Brightness
μ0 24.88
μRe 26.26
⟨ μRe ⟩ 25.66

Structural Parameters


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

Data Unbinned
Sersic Index 0.66
Effective Radius [arcsec]13.09
Axis Ratio 0.65
Position Angle -84.36

HI Data

No HI data was found for this dwarf.

Globular Clusters

Globular cluster candidates within 65.45 arcsec (5Re) of the dwarf:

ID RA, Dec Gaia SepSepg (g-r) (g-i) (u-g) IC
Flag [''][1/Re]
1 191.846752, -1.394288 0 36.742.8121.62±0.000.47±0.01 -- -- 0.01
2 191.856980, -1.408245 0 38.912.9723.95±0.030.48±0.04 -- -- -0.02
3 191.860659, -1.395914 0 58.544.4721.51±0.000.43±0.01 -- -- 0.01
4 191.849383, -1.421339 0 61.334.6921.42±0.000.54±0.01 -- -- 0.01
5 191.842466, -1.387591 0 62.854.823.50±0.020.59±0.03 -- -- 0.04

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] ['']
NGC4690 17.1 ETG 40 2765 18 10.50
NGC4668 59.08 LTG 27 1636 22 9.95
NGC4666 65.81 LTG 26 1529 32 11.34
NGC4653 73.33 LTG 39 2631 40 10.50
NGC4753 75.7 ETG 23 1163 49 11.35
NGC4642 76.46 LTG 39 2644 21 10.35
NGC4684 79.39 ETG 13 1560 21 10.20
NGC4632 107.66 LTG 28 1726 30 10.50
NGC4691 116.38 LTG 16 1110 26 10.31
UGC08067 148.29 LTG 41 2833 19 10.38