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Related papers: The CALIFA view on stellar angular momentum across…

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H-alpha and continuum images are presented for 27 nearby early-type(Sa-Sab) spiral galaxies. Contrary to popular perception, the images reveal copious massive star formation in some of these galaxies. A determination of the H-alpha…

Astrophysics · Physics 2009-10-31 Salman Hameed , Nick Devereux

We present rotation curves for 19, mostly luminous, early-type disk galaxies. Rotation velocities are measured from a combination of HI velocity fields and long-slit optical emission line spectra along the major axis. We find that the…

Astrophysics · Physics 2008-11-26 E. Noordermeer , J. M. van der Hulst , R. Sancisi , R. S. Swaters , T. S. van Albada

We present a systematic analysis of the rotation curves of 187 galaxies with masses greater than 10^10 M_sol, with atomic gas masses from the GALEX Arecibo Sloan Survey (GASS), and with follow-up long-slit spectroscopy from the MMT. Our…

Astrophysics of Galaxies · Physics 2015-08-06 Guinevere Kauffmann , Mei-ling Huang , Sean Moran , Timothy Heckman

The stellar velocity ellipsoid (SVE) in galaxies can provide important information on the processes that participate in the dynamical heating of their disc components (e.g. giant molecular clouds, mergers, spiral density waves, bars).…

Hot cluster Horizontal Branch (HB) stars and field subdwarf B (sdB) stars are core helium burning stars that exhibit abundance anomalies that are believed to be due to atomic diffusion. Diffusion can be effective in these stars because they…

Solar and Stellar Astrophysics · Physics 2015-06-03 G. Mathys , S. Hubrig , E. Mason , G. Michaud , M. Schoeller , F. Wesemael

We present integrated H alpha measurements obtained from imaging observations of 98 late-type galaxies, primarily selected in the Coma supercluster. These data, combined with H alpha photometry from the literature, include a magnitude…

Astrophysics · Physics 2009-10-30 G. Gavazzi , B. Catinella , L. Carrasco , A. Boselli , A. Contursi

We have observationally quantified the effect of gravitational torques on stars in disk galaxies due to the stellar distribution itself and explored whether these torques are efficient at transporting angular momentum within a Hubble Time.…

Astrophysics of Galaxies · Physics 2015-05-14 K. Foyle , H. -W. Rix , S. Zibetti

We present our discovery of observational evidence for the coherence between galaxy rotation and the average line-of-sight motion of neighbors. We use the Calar Alto Legacy Integral Field Area (CALIFA) survey data analyzed with the Python…

Astrophysics of Galaxies · Physics 2019-02-20 Joon Hyeop Lee , Mina Pak , Hye-Ran Lee , Hyunmi Song

We analyze orbits of stars and dark matter out to three effective radii for 42 galaxies formed in cosmological zoom simulations. Box orbits always dominate at the centers and $z$-tubes become important at larger radii. We connect the…

Astrophysics of Galaxies · Physics 2015-01-06 Bernhard Röttgers , Thorsten Naab , Ludwig Oser

Within a fully cosmological hydrodynamical simulation, we form a galaxy which rotates at 140 km/s, and is characterised by two loose spiral arms and a bar, indicative of a Hubble Type SBc/d galaxy. We show that our simulated galaxy has no…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 C. B. Brook , G. Stinson , B. K. Gibson , R. Roškar , J. Wadsley , T. Quinn

We aim at investigating the formation process of weak bars by measuring their properties in a sample of 29 nearby SAB galaxies, spanning a wide range of morphological types and luminosities. The sample galaxies were selected to have an…

Astrophysics of Galaxies · Physics 2019-11-27 V. Cuomo , J. A. L. Aguerri , E. M. Corsini , V. P. Debattista , J. Méndez-Abreu , A. Pizzella

(Abridged) We analyze the evolution of 42 spiral galaxies in the Spitzer Infrared Nearby Galaxies Survey, using extinction-corrected UV, optical and near-infrared radial profiles to probe the emission of stars of different ages as a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 J. C. Muñoz-Mateos , S. Boissier , A. Gil de Paz , J. Zamorano , R. C. Kennicutt , J. Moustakas , N. Prantzos , J. Gallego

The velocity function is a fundamental observable statistic of the galaxy population, similarly impor- tant as the luminosity function, but much more difficult to measure. In this work we present the first directly measured circular…

Rotational curves are measured for almost complete sample of 308 northern spiral galaxies using the 6-m telescope. For observations we selected edge-on galaxies from RFGC catalog with apparent axial ratio a/b>8, angular diameter a<2', and…

Astrophysics · Physics 2007-05-23 D. I. Makarov , I. D. Karachentsev , A. N. Burenkov

We study the spatially-resolved stellar specific angular momentum $j_*$ in a high-quality sample of 24 CALIFA galaxies covering a broad range of visual morphology, accounting for stellar velocity and velocity dispersion. The shape of the…

We are conducting a large survey of star formation within ~400 nearby spiral and irregular galaxies through imaging of the Halpha emission. We present here some of our first results from 104 of the galaxies in our sample, investigating the…

Astrophysics · Physics 2007-05-23 Neville S. Shane , Phil A. James

We measure the shape of the velocity ellipsoid in two late-type spiral galaxies (Hubble types Sc and Scd) and combine these results with our previous analyses of six early-type spirals (Sa to Sbc) to probe the relation between galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 J. Gerssen , K. Shapiro Griffin

Galaxies in the Hubble Ultra Deep Field (UDF) larger than 10 pixels (0.3 arcsec) have been classified according to morphology and their photometric properties are presented. There are 269 spirals, 100 ellipticals, 114 chains, 126…

We present the stellar velocity maps of 25 massive early type galaxies located in dense environments observed with MUSE. Galaxies are selected to be brighter than M_K=-25.7 magnitude, reside in the core of the Shapley Super Cluster or be…

(Abridged) We present stellar kinematics of the MUSE Most Massive Galaxies (M3G) Survey, comprising 25 galaxies brighter than -25.7 mag in the Ks-band and stellar mass above ~6x10^11 Msun. Galaxies are divided between the brightest cluster…

Astrophysics of Galaxies · Physics 2026-04-01 Davor Krajnovic , Eric Emsellem , Roland Bacon , Leindert A. Boogaard , Peter M. Weilbacher , Lutz Wisotzki