scholarly journals The Baryonic Tully–Fisher Relation in the Local Group and the Equivalent Circular Velocity of Pressure-supported Dwarfs

2021 ◽  
Vol 162 (5) ◽  
pp. 202
Author(s):  
Stacy S. McGaugh ◽  
Federico Lelli ◽  
James M. Schombert ◽  
Pengfei Li ◽  
Tiffany Visgaitis ◽  
...  
1983 ◽  
Vol 6 ◽  
pp. 269-282 ◽  
Author(s):  
M. Aaronson

AbstractThe Tully-Fisher relation applied in the infrared appears to be the best global distance indicator presently available for determining the expansion rate and deviations from uniform Hubble flow. In this article recent results obtained using the IR/H I method are reviewed. A Virgo-directed Local Group velocity of about 300 km s–1 is indicated (implying a local value for the deceleration parameter qo ~ 0.05 – 0.1) along with a “best guess” value for the Hubble Constant of 85 km s-1 Mpc-1.


1987 ◽  
Vol 124 ◽  
pp. 223-227
Author(s):  
Roger L. Davies ◽  
David Burstein ◽  
Alan Dressler ◽  
S. M. Faber ◽  
Donald Lynden-Bell ◽  
...  

We have used a new distance estimator for elliptical galaxies to determine the peculiar velocities, with respect to a uniform Hubble flow, of approximately 400 galaxies. The relative distances of five clusters in common with those of Aaronson et al. (1981, 1986), based on the infrared Tully-Fisher relation for spirals, are in good agreement.We do not see the reflex of the Local Group motion with respect to the microwave background out to recession velocities of 6000 km s−1. Rather, the frame of elliptical galaxies appears to be moving with respect to the microwave background with a velocity of 600 km s−1 towards 1 = 312°, b = +6°. This motion is consistent with a re-analysis of the Rubin et al. (1976) data on the magnitude-diameter relation for ScI galaxies and with the nearby and cluster samples of Aaronson et al. (1982, 1986).


2004 ◽  
Vol 220 ◽  
pp. 317-318
Author(s):  
Pieter Buyle ◽  
Maarten Baes ◽  
Herwig Dejonghe

We present new velocity dispersion measurements for a set of 12 spiral galaxies and use them to derive a more accurate υc – σ relation which holds for a wide morphological range of galaxies. Combined with the MBH – σ relation, this relation can be used as a tool to estimate supermassive black hole (SMBH) masses by means of the asymptotic circular velocity. Together with the Tully-Fisher relation, it serves as a constraint for galaxy formation and evolution models.


2012 ◽  
Vol 8 (S289) ◽  
pp. 274-281
Author(s):  
V. Scowcroft ◽  
W. L. Freedman ◽  
B. F. Madore ◽  
A. Monson ◽  
S. E. Persson ◽  
...  

AbstractThe Carnegie Hubble Program (CHP) is a Warm Spitzer program with the aim of reducing the uncertainty in the Hubble constant to below 3%. The program is calibrated using Galactic Cepheids with precise parallax distances from the Hubble Space Telescope (HST), combined with a large sample of Cepheids in the Large Magellanic Cloud. We extend the Cepheid distance scale to the Local Group and beyond, into the regime probed by the Tully–Fisher relation. The entire program—from Galactic Cepheids to the most distant galaxies—uses the Spitzer/IRAC instrument. Completing the entire program with a single instrument on a single telescope virtually eliminates instrumental effects, whilst moving to the mid-infrared drastically reduces the reddening and metallicity effects that trouble the optical Cepheid distance scale. Our first measurement of the Hubble constant, using only two CHP galaxies tied into the HST Key Project results has produced a measurement of H0 = 74.3 ± 2.1 (systematic) km s−1 Mpc−1, which corresponds to a systematic uncertainty of 2.8%.


2002 ◽  
Vol 2 ◽  
pp. 305-311
Author(s):  
R. Ibata
Keyword(s):  

2020 ◽  
Vol 4 (8(77)) ◽  
pp. 4-7
Author(s):  
Sardaana Anatolievna Alekseeva

When getting acquainted with the ethnic traditions of the peoples of Yakutia, special attention should be paid to the national culture of the evens as a small indigenous people of the North. Cultural and ethnographic features of Yakutia are one of the most important resources for the development of tourism. The main purpose of the work is to consider the potential of ethnic tourism on the example of the village of Sebyan-Kuel in the Кobyai district of Yakutia. The following specific ethnographic methods are used: the method of included observation and indepth interview. The result was that in this remote mountains of the Verkhoyansk ridge preserved the original culture of the local group Lamynkhinsky Evens, which is a unique, non-commodity, and, consequently, an inexhaustible resource for the economy, social and cultural development of the nasleg. In our opinion, the area of Lamynkhinsky nasleg can become one of the most popular tourist destinations due to its uniqueness in ethnic and extreme, ecological, hunting and fishing types of tourism.


1999 ◽  
Vol 118 (2) ◽  
pp. 862-882 ◽  
Author(s):  
D. Martínez-Delgado ◽  
C. Gallart ◽  
A. Aparicio

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