Research output: Contribution to journal › Article › peer-review
ESO 603-G21 : A strange polar-ring galaxy. / Reshetnikov, VP; Faundez-Abans, M; de Oliveira-Abans, M.
In: ASTRONOMY & ASTROPHYSICS, Vol. 383, No. 2, 02.2002, p. 390-397.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - ESO 603-G21
T2 - A strange polar-ring galaxy
AU - Reshetnikov, VP
AU - Faundez-Abans, M
AU - de Oliveira-Abans, M
PY - 2002/2
Y1 - 2002/2
N2 - We present the results of B, V, R surface photometry of ESO 603-G21 - a galaxy with a possible polar ring. The morphological and photometric features of this galaxy are discussed. The central round object of the galaxy is rather red and presents a nearly exponential surface brightness distribution. This central structure is surrounded by a blue warped ring or disk. The totality of the observed characteristics (optical and NIR colors, strong color gradients, HI and H(2) content, FIR luminosity and star-formation rate, rotation-curve shape, global mass-to-luminosity ratio, the agreement with the Tully-Fisher relation, etc.) shows that ESO 603-G21 is similar to late-type spiral galaxies. We suppose that morphological peculiarities and the possible existence of two large-scale kinematically-decoupled subsystems in ESO 603-G21 can be explained as being a result of dissipative merging of two spiral galaxies or as a consequence of a companion accretion onto a pre-existing spiral host.
AB - We present the results of B, V, R surface photometry of ESO 603-G21 - a galaxy with a possible polar ring. The morphological and photometric features of this galaxy are discussed. The central round object of the galaxy is rather red and presents a nearly exponential surface brightness distribution. This central structure is surrounded by a blue warped ring or disk. The totality of the observed characteristics (optical and NIR colors, strong color gradients, HI and H(2) content, FIR luminosity and star-formation rate, rotation-curve shape, global mass-to-luminosity ratio, the agreement with the Tully-Fisher relation, etc.) shows that ESO 603-G21 is similar to late-type spiral galaxies. We suppose that morphological peculiarities and the possible existence of two large-scale kinematically-decoupled subsystems in ESO 603-G21 can be explained as being a result of dissipative merging of two spiral galaxies or as a consequence of a companion accretion onto a pre-existing spiral host.
KW - Galaxies: formation
KW - Galaxies: individual: ESO 603-G21
KW - Galaxies: kinematics and dynamics
KW - Galaxies: photometry
KW - Galaxies: structure
UR - http://www.scopus.com/inward/record.url?scp=0036191006&partnerID=8YFLogxK
U2 - 10.1051/0004-6361:20011784
DO - 10.1051/0004-6361:20011784
M3 - статья
VL - 383
SP - 390
EP - 397
JO - ASTRONOMY & ASTROPHYSICS
JF - ASTRONOMY & ASTROPHYSICS
SN - 0004-6361
IS - 2
ER -
ID: 32201344