Zobrazeno 1 - 10
of 6 774
pro vyhledávání: '"tully-fisher relation"'
Autor:
Lelli, Federico
Some gas-rich "ultra-diffuse" galaxies (UDGs), which are extreme examples of low surface brightness (LSB) dwarf galaxies, have been reported to lack dark matter and to be offset from the baryonic Tully-Fisher relation (BTFR). If confirmed, these UDGs
Externí odkaz:
http://arxiv.org/abs/2408.05269
Autor:
Amekhyan, A., Sargsyan, S.
We involve the galactic halo observational data to test the weak field General Relativity involving the cosmological constant. Using the data for 15 hydrogen (Hi) VLA super spirals and the Tully-Fisher relation we obtain constraints for each galaxy.
Externí odkaz:
http://arxiv.org/abs/2407.10656
Publikováno v:
A&A 689, A318 (2024)
We present a study of the stellar and baryonic Tully-Fisher relation within the redshift range of $0.6 \leq z \leq 2.5$ utilizing observations of \sfgs. This dataset, as explored in \citet{GS23}, comprises of disk-like galaxies spanning a stellar mas
Externí odkaz:
http://arxiv.org/abs/2406.08934
Autor:
Mould, Jeremy, Jarrett, T. H., Courtois, Hélène, Bosma, Albert, Deg, Nathan, Dupuy, Alexandra, Staveley-Smith, Lister, Taylor, E. N., English, Jayanne, Rajohnson, S. H. A., Kraan-Korteweg, Renée, Forbes, Duncan, Dénes, Helga, Lee-Waddell, Karen, Shen, Austin, Wong, O. I., Holwerda, Benne, Koribalski, Bärbel, Leahy, Denis, Piña, Pavel Mancera, Yu, Niankun
The Tully-Fisher Relation (TFR) is a well-known empirical relationship between the luminosity of a spiral galaxy and its circular velocity, allowing us to estimate redshift independent distances. Here we use high signal-to-noise HI 21-cm integrated s
Externí odkaz:
http://arxiv.org/abs/2406.10877
Publikováno v:
ApJL 969 L3 (2024)
We use a new deprojection formula to infer the gravitational potential around isolated galaxies from weak gravitational lensing. The results imply circular velocity curves that remain flat for hundreds of kpc, greatly extending the classic result fro
Externí odkaz:
http://arxiv.org/abs/2406.09685
Autor:
Palle, Davor
The recent measurements of circular velocity curves from weak lensing of the isolated galaxies lead to a conclusion that the circular velocity curves remain flat well beyond the virial radii of dark matter halos up to 1 Mpc. This is in clear contradi
Externí odkaz:
http://arxiv.org/abs/2407.18263
We investigate the baryonic Tully-Fisher relation in low surface brightness galaxies selected from the Arecibo Legacy Fast ALFA survey. We find that the $\rm HI$-bearing low surface brightness galaxies still follow the baryonic Tully-Fisher relation
Externí odkaz:
http://arxiv.org/abs/2403.16754
Autor:
Correa, Camila, Schaller, Matthieu, Schaye, Joop, Ploeckinger, Sylvia, Borrow, Josh, Bahe, Yannick
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 influence and to
Externí odkaz:
http://arxiv.org/abs/2403.09186
We present WISE W1 photometry of the SPARC (Spitzer Photometry and Accurate Rotation Curves) sample. The baseline of near-IR fluxes is established for use by stellar mass models, a key component to the baryonic Tully-Fisher relation and other kinemat
Externí odkaz:
http://arxiv.org/abs/2404.02339
Utilizing the well-established Radial Tully-Fisher (RTF) relation observed in a `large' (843) sample of local galaxies, we report the maximum allowed variance in the Hubble parameter, $H_0$. We estimate the total intrinsic scatter in the magnitude of
Externí odkaz:
http://arxiv.org/abs/2403.06859