Výsledky vyhledávání - "Thomas Richtler"

Dust and star formation in the centre of NGC 3311

Autor: M. Hilker, C. E. Barbosa, Thomas Richtler, Magda Arnaboldi

NGC 3311 is the central galaxy of the Hydra I galaxy cluster. It has a hot interstellar medium and hosts a central dust lane with emission lines. These dust lanes are frequent in elliptical galaxies, but the case of NGC 3311 might be particularly int

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1c9f6bb4adebb468eddfa85fdcf7359
http://arxiv.org/abs/2008.10662

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ALMA detection of the dusty object silhouetted against the S0 galaxy NGC 3269 in the Antlia cluster

Autor: Lauri K. Haikala, Matías Gómez, Thomas Richtler, R. Salinas, Gösta F. Gahm, Kalevi Mattila

Publikováno v: Astronomy & Astrophysics. 645:A36

An intriguing silhouette of a small dust patch can be seen against the disk of the S0 galaxy NGC 3269 in the Antlia cluster in optical images. The images do not provide any clue as to whether the patch is a local Jupiter mass-scale cloudlet or a larg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::776d5f2752f1888792f70119410be6d2
https://doi.org/10.1051/0004-6361/202038994

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The curious case of the companion: evidence for cold accretion onto a dwarf satellite near the isolated elliptical NGC 7796

Autor: Thomas Richtler, Thomas H. Puzia, Karina T. Voggel, M. Hilker, R. Salinas, Richard R. Lane, Matías Gómez

Publikováno v: Astronomy & Astrophysics. 620:A133

The isolated elliptical (IE) NGC 7796 is accompanied by an interesting early-type dwarf galaxy, named NGC7796-DW1. It exhibits a tidal tail, very boxy isophotes, and multiple nuclei or regions (A, B, and C) that are bluer than the bulk population of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a48186f8f76a9ce99e9510aa46b95573
https://doi.org/10.1051/0004-6361/201732241

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Deconstructing the Antlia cluster core

Autor: Thomas Richtler, Juan Pablo Caso

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Astronomy and Astrophysics
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Context. The present literature does not give a satisfactory answer to the question about the nature of the "Antlia galaxy cluster". Aims. The radial velocities of galaxies found in the region around the giant ellipticals NGC 3258/3268 range from abo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a968c7ff9ee91a2292e7675b93b39cc

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Dynamics of the NGC 4636 globular cluster system

Autor: S. S. Larsen, Michael Hilker, Thomas Richtler, Boris Dirsch, Ulrich Mebold, Y. Schuberth, Markus Kissler-Patig

Publikováno v: Astronomy & Astrophysics. 459:391-406

We present the first dynamical study of the globular cluster system of NGC 4636. This giant elliptical galaxy is claimed to be extremely dark matter dominated, according to X-ray observations. Using the VLT with FORS2/MXU, we obtained velocities for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11cff286427c12979baf6c19e916918a
https://doi.org/10.1051/0004-6361:20053134

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The globular cluster system of NGC 1316

Autor: Thomas Richtler, Bernd Husemann, Thomas H. Puzia, Fabio Bresolin, Michael Hilker, Matías Gómez

Publikováno v: Astronomy & Astrophysics. 601:A28

The light of the merger remnant NGC 1316 is dominated by old and intermediate-age stars. The only sign of current star formation in this big galaxy is the HII region SH2, an isolated star cluster complex with a ring-like morphology and an estimated a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::918b794c404f1e3864d0a7c8c29ed986
https://doi.org/10.1051/0004-6361/201630227

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The paucity of globular clusters around the field elliptical NGC 7507

Autor: Juan Pablo Caso, Aaron J. Romanowsky, Ricardo Salinas, Lilia Patricia Bassino, Rebecca Lane, Thomas Richtler

Publikováno v: ASTRONOMY & ASTROPHYSICS
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP

Context. There is strong evidence that globular cluster systems (GCSs) of massive galaxies are largely assembled by infall/accretion processes. Therefore, we expect the GCSs of isolated elliptical galaxies to be poor. Although not completely isolated

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24b36243faa64ccb3c6d3fc05334e14a
http://www.aanda.org/articles/aa/abs/2013/07/aa21032-13/aa21032-13.html

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The globular cluster system of NGC 1399 : V. dynamics of the cluster system out to 80 kpc

Autor: Thomas Richtler, Y. Schuberth, Michael Hilker, Boris Dirsch, Leopoldo Infante, Lilia Patricia Bassino, Aaron J. Romanowsky

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Astronomy & Astrophysics
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET

Globular clusters (GCs) are tracers of the gravitational potential of their host galaxies. Moreover, their kinematic properties may provide clues for understanding the formation of GC systems and their host galaxies. We use the largest set of GC velo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5d6e61b196bf8a5ac5646dc24ef68de
http://sedici.unlp.edu.ar/handle/10915/82464

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The dark matter halo of NGC 1399: CDM or MOND?

Autor: Thomas Richtler, Y. Schuberth, Michael Hilker, Boris Dirsch, Lilia Patricia Bassino, Aaron J. Romanowsky

Publikováno v: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Astronomy & Astrophysics
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

Context: Central galaxies in galaxy clusters may be key discriminants in the competition between the cold dark matter (CDM) paradigm and modified Newtonian dynamics (MOND). Aims: We investigate the dark halo of NGC 1399, the central galaxy of the For

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fda58b802bfb453959001a12b8f02ce
https://www.aanda.org/articles/aa/abs/2008/05/aa8539-07/aa8539-07.html

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Intra-cluster globular clusters around NGC 1399 in Fornax?

Autor: Y. Schuberth, Michael Hilker, Thomas Richtler, Lilia Patricia Bassino

Aims. We investigate whether the globular clusters (GCs) in the recently published sample of GCs in the Fornax cluster by Bergond and coworkers are indeed intra-cluster objects. Methods. We combine their catalogue of radial velocity measurements with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfde5d593e1780e0d55cc153aeed6a89
http://sedici.unlp.edu.ar/handle/10915/83008

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