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Related papers: The Tully-Fisher relation in dense groups at $z \s…

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The study of the evolution of the Tully-Fisher relation has been controversial in the past years. The main difficulty is in determining the required parameters for intermediate and high redshift galaxies. This work aims to identify the main…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 M. Fernández Lorenzo , J. Cepa , A. Bongiovanni , H. Castañeda , A. M. Pérez García , M. A. Lara-López , M. Pović , M. Sánchez-Portal

In the last few years, galaxies at redshifts up to z~1 have become accessible for medium-resolved spectroscopy thanks to the new generation of 10m-class telescopes. With kinematic and photometric information on spiral galaxies in this…

Astrophysics · Physics 2009-11-07 A. Boehm , B. L. Ziegler , K. J. Fricke , the FDF Team

Using data from four deep fields (COSMOS, AEGIS, ECDFS, and CDFN), we study the correlation between the position of galaxies in the star formation rate (SFR) versus stellar mass plane and local environment at $z<1.1$. To accurately estimate…

We have gained VLT/FORS spectra and HST/ACS images of a sample of 220 distant field spiral galaxies. Spatially resolved rotation curves were extracted and fitted with synthetic velocity fields that take into account all geometric and…

Astrophysics · Physics 2009-11-11 Asmus Boehm , Bodo L. Ziegler

We present observations of 18 galaxies from the Galaxy And Mass Assembly (GAMA) survey made with the SPIRAL optical integral field unit (IFU) on the Anglo-Australian Telescope. The galaxies are selected to have a narrow range in stellar…

In this second of a series of papers on spatially resolved star formation, we investigate the impact of the density-morphology relation of galaxies on the spatial variation of star formation (SF) and its dependence on environment. We find…

Astrophysics of Galaxies · Physics 2009-08-05 Niraj Welikala , Andrew J. Connolly , Andrew M. Hopkins , Ryan Scranton

We present an analysis of $\sim$1500 H160-selected photometric galaxies detected to a limiting magnitude of 27.8 in the HUDF, using imaging from the HST WFC3/IR camera in combination with archival UV, optical, and NIR imaging. We fit…

Self-interacting dark matter (SIDM) has the potential to significantly influence galaxy formation in comparison to the cold, collisionless dark matter paradigm (CDM), resulting in observable effects. This study aims to elucidate this…

Cosmology and Nongalactic Astrophysics · Physics 2024-03-15 Camila Correa , Matthieu Schaller , Joop Schaye , Sylvia Ploeckinger , Josh Borrow , Yannick Bahe

The redshift evolution of the Tully-Fisher Relation probes gravitational dynamics that must be consistent with any modified gravity theory seeking to explain the galactic rotation curves without the need for dark matter. Within the context…

Astrophysics · Physics 2008-09-18 Christopher Limbach , Dimitrios Psaltis , Feryal Ozel

Nearby isolated galaxies ($z\sim 0$), are considered immerse within a thermal bath at 2.73 K. However the dwarf galaxies orbiting these galaxies are also subject to additional radiation from their hosts, so they are within a thermal bath…

Astrophysics of Galaxies · Physics 2018-11-30 Carlos E. Navia

We introduce TiNy Titans (TNT), the first systematic study of star formation and the subsequent processing of the interstellar medium in interacting dwarf galaxies. Here we present the first results from a multiwavelength observational…

Astrophysics of Galaxies · Physics 2015-05-20 S. Stierwalt , G. Besla , D. Patton , K. Johnson , N. Kallivayalil , M. Putman , G. Privon , G. Ross

Context. Understanding the dwarf galaxy population in low density environments is crucial for testing the LCDM cosmological model. The increase in diversity towards low mass galaxies is seen as an increase in the scatter of scaling…

We present a systematic investigation of the star formation rate (hereafter SFR) in interacting disk galaxies. We determine the dependence of the overall SFR on different spatial alignments and impact parameters of more than 50 different…

Astrophysics · Physics 2009-11-10 W. Kapferer , A. Knapp , S. Schindler , S. Kimeswenger , E. van Kampen

The apparent correlation between the specific star formation rate (sSFR) and total stellar mass (M_star) of galaxies is a fundamental relationship indicating how they formed their stellar populations. To attempt to understand this relation,…

Astrophysics of Galaxies · Physics 2015-05-13 M. D. Lehnert , W. van Driel , L. Le Tiran , P. Di Matteo , M. Haywood

We investigate the influence of the star formation rate on the Tully-Fisher relation. We find that a simple model which combines the empirically-determined star-formation rate with the expected properties of galaxy halos provides a…

Astrophysics · Physics 2009-10-31 A. Heavens , R. Jimenez

We study the evolution of the red and blue galaxies from $z=3$ to $z=0$ using the EAGLE simulation. The galaxies in the blue cloud and the red sequence are separated at each redshift using a scheme based on Otsu's method. Our analysis shows…

Astrophysics of Galaxies · Physics 2024-09-17 Apashanka Das , Biswajit Pandey

We study Tully-Fisher relations for a sample that combines extremely faint (M_B > -14.0) galaxies along with bright (i.e. L_*) galaxies. Accurate (~ 10%) distances, I band photometry, and B-V colors are known for the majority of the…

Astrophysics · Physics 2009-11-13 Ayesha Begum , Jayaram N. Chengalur , I. D. Karachentsev , M. E. Sharina

We use the SAMI galaxy survey to study the the kinematic morphology-density relation: the observation that the fraction of slow rotator galaxies increases towards dense environments. We build a logistic regression model to quantitatively…

Merging systems at low redshift provide the unique opportunity to study the processes related to star formation in a variety of environments that presumably resemble those seen at higher redshifts. Previous studies of distant starbursting…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Pierre-Alain Duc , Pierre-Emmanuel Belles , Elias Brinks , Frederic Bournaud

Most rotationally-supported galaxies strictly follow the Baryonic Tully-Fisher Relation (BFTR) linking circular velocity with baryon content. This firmly established empirical relationship is currently thought to have origins in either…

Astrophysics of Galaxies · Physics 2020-04-09 Jeffrey M. La Fortune
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