Untitled

Sarzi, Marc; Bertola, F.; Cappellari, Michele; Corsini, E. M.; Funes, J. G.; Pizzella, A.; Beltrán, J. C. Vega

doi:10.1023/a:1017524022270

Cited by 26 publications

(34 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…suggests that ESO 603-G21 could be an unusual late-type spiral galaxy with a kinematically-decoupled extended "bulge". Therefore, it may be similar in some respects to NGC 4672 and NGC 4698, which are early-type disk galaxies with geometric and kinematical orthogonal decoupling between the bulge and disk (Bertola et al 1999;Sarzi et al 2000), or to NGC 2748, which is a late-type spiral galaxy with possible ongoing accretion of a dwarf companion onto the central region of the galaxy (Hagen-Thorn et al 1996). The bulge-like feature of ESO 603-G21 can be a "true" polar ring that is formed during almost perpendicular accretion of an early-type companion onto central region of a pre-existing disk galaxy.…”

Section: Discussionmentioning

confidence: 95%

ESO 603-G21: A strange polar-ring galaxy

Решетников

Faúndez-Abans

Oliveira-Abans

2002

A&A

View full text Add to dashboard Cite

Abstract. 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 H2 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.

show abstract

Section: Discussionmentioning

confidence: 95%

ESO 603-G21: A strange polar-ring galaxy

Решетников

Faúndez-Abans

Oliveira-Abans

2002

A&A

View full text Add to dashboard Cite

show abstract

“…This peculiarity makes ESO 603-G26 similar to a late-type spiral galaxy with a kinematically-decoupled extended bulge (e.g. NGC 4672 and NGC 4698, see Bertola et al 1999 andSarzi et al 2000) rather than a polar ring galaxy, as also suggested by Reshetnikov et al (2002). As we will show in Paper II, the central component of ESO 603-G26 has colors, age and light distribution properties quite similar to those of the host galaxy in the other PRGs of our sample.…”

Section: Description and Discussion Of Each Galaxymentioning

confidence: 99%

Near-Infrared photometry in the J, H and ${\it Kn}$ bands for Polar Ring Galaxies

Iodice

Arnaboldi

Sparke³

et al. 2002

A&A

View full text Add to dashboard Cite

Abstract. We present new Near-Infrared (NIR) observations, in the J, H and Kn bands, for a sample of Polar Ring Galaxies (PRGs), selected from the Polar Ring Catalogue (Whitmore et al. 1990). Data were acquired with the CASPIR near-IR camera at the 2.3 m telescope of Mount Stromlo and Siding Spring Observatory. We report here on the detail morphological study for the central host galaxy and the polar structure in all PRGs of our sample. Total magnitudes, bulge-to-disk decomposition and structural parameters are computed for all objects. These data are crucial for an accurate modeling of the stellar population and the estimate of the star formation rates in the two components.

show abstract

“…In spite of gravitational perturbations, some stellar and gaseous components with a misaligned or even opposite angular momentum with respect to its core, conserve some dynamical memory of processes which drive galaxy formation and evolution. In normal galaxies, kinematically-decoupled components ranging from the counter-rotating-decoupled disks of ionized gas are observed in a large fraction of S0 galaxies (Bertola et al 1992;Kuijken et al 1996;Plana & Boulesteix 1996), and orthogonally-rotating stellar cores are found in Sa spirals (Bertola et al 1999;Sarzi et al 2000). These characteristics are usually hidden from preliminary morphological inspection and are serendipitously discovered only by detailed kinematics studies (see Bertola & Corsini 1998 as review).…”

Section: Kinematics Of Hrg 54103mentioning

confidence: 99%

The ring galaxy HRG 54 103: a first study

Faúndez-Abans

Fernandes

Oliveira-Abans

et al. 2009

A&A

View full text Add to dashboard Cite

Aims. We report the first study of the peculiar ring galaxy HRG 54103 which was previously classified as a Saturn-like type galaxy. Methods. The study is based on low resolution spectroscopy and photometric observations in the optical band to highlight the characteristics of this almost isolated galaxy. The colour distribution of HRG 54103 was examined through direct CCD BVRI Kron-Cousins system imagery. Color-color diagrams of the bulge and ring are displayed and further compared with the star-forming ring galaxy HRG 2302.Results. The results of image enhancement of the morphological structure of this galaxy are discussed. The nuclear emission-line spectrum resembles that of a Seyfert2/LINER object, with z = 0.022 and heliocentric V = 6483 ± 18 km s −1 , in agreement with the literature. The nuclear, bulge and ring section radial velocities along the ring major axis show a peculiar distribution, which together and the disk-ring asymmetry suggest a possible merger event in the recent past of this object, which could also have caused its formation.

show abstract

Untitled

Cited by 26 publications

References 14 publications

ESO 603-G21: A strange polar-ring galaxy

ESO 603-G21: A strange polar-ring galaxy

Near-Infrared photometry in the J, H and ${\it Kn}$ bands for Polar Ring Galaxies

The ring galaxy HRG 54 103: a first study

Contact Info

Product

Resources

About