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-1262
J121751.94+055920.8
NGC4215-17 [internal use only]

Coordinates   [GALFIT]:
Equitorial 184.466431 5.989122 [deg]
12:17:51.9448 +05:59:20.84 [hms dms]
Galactic 280.735199 67.402618 [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]
NGC4215 g 7 2415 0.79 911.57 Full Field
r 7 2415 0.67 1288.14

Distance Estimates

No distance estimates have been found.
We have assumed the dwarf is a satellite of NGC4215 at a distance of 32 Mpc.

Magnitudes

Galfit magnitudes
g 18.69
r 18.12
Extinction: SDSS MegaCam
g 0.06 0.06
r 0.04 0.04
i 0.03 0.03
SDSS values from IRSA, MegaCam values transformed following Gwyn 2008.
Surface Brightness
μ0 24.46
μRe 25.84
⟨ μRe ⟩ 25.24

Structural Parameters


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

Data Unbinned
Sersic Index 0.77
Effective Radius [arcsec]11.55
Axis Ratio 0.82
Position Angle -81.35

Properties of the nucleus

RA, Dec [deg]184.4664, 5.9890
offset [arcsec]0.44
mg23.47
(g-r)00.55

HI Data

No HI data was found for this dwarf.

Globular Clusters

Globular cluster candidates within 57.75 arcsec (5Re) of the dwarf:

ID RA, Dec Gaia SepSepg (g-r) (g-i) (u-g) IC
Flag [''][1/Re]
1 184.466552, 5.988896 0 0.910.0823.34±0.030.43±0.04 -- -- 0.02
2 184.461299, 5.989523 0 18.461.622.43±0.010.48±0.02 -- -- 0.02
3 184.463195, 5.981094 0 31.152.722.85±0.020.55±0.03 -- -- 0.01
4 184.466331, 5.979908 1 33.172.8718.87±0.000.53±0.00 -- -- 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] ['']
NGC4260 23.39 LTG 38 1958 34 11.05
NGC4249 23.5 ETG 39 2618 13 10.10
NGC4257 24.35 LTG 41 2756 11 10.25
NGC4261 24.76 ETG 31 2212 38 11.38
NGC4264 27.2 ETG 38 2518 14 10.51
NGC4215 38.25 ETG 32 2011 15 10.68
NGC4266 38.54 LTG 17 1536 19 9.97
IC3102 42.55 LTG 17 2235 31 10.14
NGC4270 43 ETG 35 2331 16 10.79
NGC4259 43.08 ETG 37 2497 8 10.19