1999AJ....118.2723M

Query : 1999AJ....118.2723M

1999AJ....118.2723M - Astron. J., 118, 2723-2733 (1999/December-0)

POX 4 and Tol 35: two peculiar Wolf-Rayet dwarf galaxies.

MENDEZ D.I. and ESTEBAN C.

Abstract (from CDS):

We present results of narrowband (Hα and adjacent continuum) and broadband (U, B, and V) optical CCD imaging together with high-resolution Hα spectroscopy of the blue compact Wolf-Rayet dwarf galaxies POX 4 and Tol 35. POX 4 has a fainter, irregular, and diffuse companion located 20".5 (4.7 kpc) along the minor axis of the galaxy, which is visible also in the Hα emission. The difference in recession velocity between the galaxy and the companion is about 130 km.s–1. The observational results lead us to propose that POX 4 could be interpreted as a low-mass ring galaxy, produced by a head-on intrusion of the fainter companion. Regarding the other object, a spectrum taken along the major axis of Tol 35 shows the coexistence of systems of motion with a velocity difference of about 50 km.s–1. Moreover, the deep continuum-subtracted Hα image of the galaxy shows very faint features that resemble the beginning of crossed tidal tails or gaseous filaments powered by the mechanical action of the young stellar population. In this sense, Tol 35 could be interpreted either as an object in an intermediate-stage merging process between two gas-rich dwarf galaxies or as an object suffering the effect of a galactic wind.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Interactions - Galaxies: Kinematics and Dynamics - Stars: Wolf-Rayet

Nomenclature: Table 2: [ME99] Pox 4 NN (Nos 1-18). Table 3: [ME99] Tol 35 N (Nos 1-5).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

CDS comments: p. 2732 NGC 4038/49 misprint for 4038/39

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 MCG-06-02-022a EmG 00 37 41.1133192392 -33 42 58.515101748   19.26   18.52   ~ 314 1
2 TYC 4736-1346-1 * 04 51 15.7595352440 -00 14 50.295016441 12.668 12.70 12.35 11.883 11.584 G1 6 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
4 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1276 2
5 BD+75 325 HS* 08 10 49.4903003712 +74 57 57.931973676 8.002 9.23 9.50 9.698 9.884 sdO5 267 0
6 Z 33-32 AG? 08 58 29.864 +06 19 17.26   16.23 15.69     ~ 42 0
7 NGC 3921 LIN 11 51 06.8803989360 +55 04 43.414457484   13.4 12.64     ~ 260 1
8 6dFGS gJ115111.7-203557 H2G 11 51 11.7 -20 35 56   15.67   15.35   ~ 87 1
9 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
10 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
11 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1
12 GSC 04949-00258 * 12 44 33.4554162144 -00 25 51.772650600 13.155 13.107 12.572 12.254 11.942 ~ 12 0
13 HZ 44 HS* 13 23 35.2629445608 +36 07 59.544140304 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 439 0
14 IC 4249 EmG 13 27 06.5667095424 -27 57 23.385136788   14.48 14.57 13.52 13.87 ~ 86 0
15 BD+33 2642 pA* 15 51 59.8854348048 +32 56 54.329485272 9.806 10.61 10.73 10.884 10.961 O7p 456 0
16 NAME Local Group GrG ~ ~           ~ 9325 0

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