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-984
J112217.78+390223.6
NGC3658-124 [internal use only]

Coordinates   [GALFIT]:
Equitorial 170.574097 39.039890 [deg]
11:22:17.7831 +39:02:23.6074 [hms dms]
Galactic 174.603104 67.946617 [deg]

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

This galaxy can be found in the following images:

Field Filter Nexp Texp IQ Background Image Link
[s] [''] [ADUs]
NGC3658 g 7 2415 1.02 586.43 Full Field
r 7 2415 0.95 982.86
i 7 1610 0.43 1093.14
NGC3665 g 7 2415 1.02 586.43 Full Field
r 7 2415 0.95 982.86
i 7 1610 0.43 1093.14

Distance Estimates

No distance estimates have been found.
We have assumed the dwarf is a satellite of NGC3665 at a distance of 33 Mpc.

Magnitudes

Galfit magnitudes
g 19.26
r 18.85
i 18.55
Extinction: SDSS MegaCam
g 0.07 0.07
r 0.05 0.05
i 0.04 0.03
SDSS values from IRSA, MegaCam values transformed following Gwyn 2008.
Surface Brightness
μ0 24.59
μRe 25.97
⟨ μRe ⟩ 25.37

Structural Parameters


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

Data Unbinned
Sersic Index 0.73
Effective Radius [arcsec]9.40
Axis Ratio 0.79
Position Angle 43.24

HI Data

No HI data was found for this dwarf.

Globular Clusters

No globular cluster candidates found within 47 arcsec (5*Re) of the dwarf.

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] ['']
NGC3665 32.89 ETG 33 2069 31 11.28
NGC3658 34.7 ETG 33 2039 19 10.69
NGC3648 50.29 ETG 32 1970 13 10.54
NGC3652 76.6 LTG 32 1997 20 10.14
UGC06517 181.79 LTG 39 2491 19 10.04
NGC3755 231.3 LTG 27 1570 26 9.94
NGC3694 231.41 ETG 35 2243 10 10.25
NGC3813 270.45 LTG 26 1465 27 10.59
NGC3675 276.18 LTG 21 770 58 11.21
PGC035754 381.23 ETG 39 2534 7 10.07