- ID:
- ivo://CDS.VizieR/J/AJ/145/111
- Title:
- Radial velocities of five spectroscopic binaries
- Short Name:
- J/AJ/145/111
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have determined spectroscopic orbits for five single-lined spectroscopic binaries, HD100167, HD135991, HD140667, HD158222, HD217924. Their periods range from 60.6 to 2403days and the eccentricities from 0.20 to 0.84. Our spectral classes for the stars confirm that they are of solar type, F9-G5, and all are dwarfs. Their [Fe/H] abundances, determined spectroscopically, are close to the solar value and on average are 0.12 greater than abundances from a photometric calibration. Four of the five stars are rotating faster than their predicted pseudosynchronous rotational velocities.
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- ID:
- ivo://CDS.VizieR/J/BaltA/11/465
- Title:
- Radial velocities of F5-M stars
- Short Name:
- J/BaltA/11/465
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Radial velocity measurements, made with a CORAVEL type spectrometer, are presented for 211 F5-M stars down to V~13.1 in eight proper motion fields of the MEGA program, located at high Galactic latitudes. These data, together with previous CORAVEL measurements of 116 stars in three of these fields, will be combined with proper motions, photometric distances and metallicities, and ages to investigate the properties of the Galactic disk in the direction perpendicular to the Galactic plane.
- ID:
- ivo://CDS.VizieR/J/ApJ/727/117
- Title:
- Radial velocities of four exoplanet candidates
- Short Name:
- J/ApJ/727/117
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present new precise HIRES radial velocity (RV) data sets of five nearby stars obtained at Keck Observatory. HD 31253, HD 218566, HD 177830, HD 99492, and HD 74156 are host stars of spectral classes F through K and show RV variations consistent with new or additional planetary companions in Keplerian motion. The orbital parameters of the candidate planets in the five planetary systems span minimum masses of Msini=27.43M_{sun}_ to 8.28M_J_, periods of 17.05-4696.95 days and eccentricities ranging from circular to extremely eccentric (e~0.63). The fifth star, HD 74156, was known to have both a 52 day and a 2500 day planet, and was claimed to also harbor a third planet at 336 days, in apparent support of the "Packed Planetary System" hypothesis. Our greatly expanded data set for HD 74156 provides strong confirmation of both the 52 day and 2500 day planets, but strongly contradicts the existence of a 336 day planet, and offers no significant evidence for any other planets in the system.
- ID:
- ivo://CDS.VizieR/J/A+A/482/53
- Title:
- Radial velocities of four LSB galaxies
- Short Name:
- J/A+A/482/53
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present integral-field spectroscopy of the ionized gas in the central regions of four galaxies with a low surface brightness disk taken with the Visible Multi Object Spectrograph at the Very Large Telescope and aimed at testing the accuracy in the determination of the central logarithmic slope alpha of the mass density radial profile rho(r){prop.to}r^alpha^ in this class of objects. For all the sample galaxies we subtracted the best-fit model of gas in circular motions from the observed velocity field and derived the residuals. Only ESO-LV5340200 is characterized by a regular velocity field. We extracted the velocity curves of this galaxy along several position angles, in order to estimate the uncertainty in deriving the central gradient of the total mass density from long-slit spectroscopy.
- ID:
- ivo://CDS.VizieR/J/A+A/415/531
- Title:
- Radial velocities of 10 Galactic Cepheids
- Short Name:
- J/A+A/415/531
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present here the appendix to the paper with the new high precision radial velocities for a sample of Galactic Cepheids. The stars are: SU Cas, EV Sct, del Cep, CV Mon, U Sgr, eta Aql, X Cyg, T Mon, RS Pup, and SV Vul.
- ID:
- ivo://CDS.VizieR/J/ApJS/156/227
- Title:
- Radial velocities of 16 Galactic Cepheids
- Short Name:
- J/ApJS/156/227
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We report 490 radial velocities for 16 Galactic Cepheid variables. The typical uncertainty of a single velocity is {+/-}0.40km/s. Comparison with published velocities shows excellent agreement. Two of the Cepheids (Z Lac, S Sge) are known binaries and exhibit orbital velocity changes in our observing interval.
- ID:
- ivo://CDS.VizieR/J/AJ/142/146
- Title:
- Radial Velocities of Galactic O-type stars I.
- Short Name:
- J/AJ/142/146
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present radial velocities for 18 Galactic O-type stars. These stars display small radial velocity scatter over timescales of one to two weeks. Some of them are long-period binaries while others are probably single stars. By fitting model spectra to our observed spectra we obtain estimates for effective temperature, log g, rotational velocity, and average radial velocity for each target.
- ID:
- ivo://CDS.VizieR/VII/99
- Title:
- Radial Velocities of Galaxies
- Short Name:
- VII/99
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This catalog lists coordinates, names, and radial velocities for 8250 galaxies scattered over the whole sky. Both optical and radio measures are included. The individual values are given as published, with a reference to each, but no unpublished data are included. An attempt was made to obtain the most accurate coordinates for each object rather than relying on the source papers. In addition to the positions and heliocentric velocities, the catalog contains a name of the galaxy, whether the observation is made by radio or optically, the mean error of the velocity, a correction for the galactic motion of the Sun, and comments. This electronic version is a slightly improved version compared to the published one, and contains more names. References and notes are not included, and the user must refer to the printed version to get them.
- ID:
- ivo://CDS.VizieR/J/A+A/455/45
- Title:
- Radial velocities of 93 galaxies in Abell 697
- Short Name:
- J/A+A/455/45
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We conduct an intensive study of the rich, X-ray luminous, and hot galaxy cluster Abell 697 (at z=0.282), likely containing a diffuse radio-emission, to determine its dynamical status. Our analysis is based on new spectroscopic data obtained at the TNG telescope for 93 galaxies and on new photometric data obtained at the INT telescope in a large field. We combine galaxy velocity and position information to select 68 cluster members (out to ~1.3h_70_^-1^Mpc from the cD galaxy), determine global dynamical properties, and detect possible substructures. The investigation of the dynamical status is also performed by using X-ray data stored in the Chandra archive.
- ID:
- ivo://CDS.VizieR/J/MNRAS/456/2829
- Title:
- Radial velocities of galaxies in A523 field
- Short Name:
- J/MNRAS/456/2829
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We study the structure of the galaxy cluster Abell 523 (A523) at z=0.104 using new spectroscopic data for 132 galaxies acquired at the Telescopio Nazionale Galileo, new photometric data from the Isaac Newton Telescope, and X-ray and radio data from the Chandra and Very Large Array archives. We estimate the velocity dispersion of the galaxy population, {sigma}_V_=949_-60_^+80^km/s, and the X-ray temperature of the hot intracluster medium, kT=5.3+/-0.3keV. We infer that A523 is a massive system: M_200_~7-9x10^14^M_{sun}_. The analysis of the optical data confirms the presence of two subclusters, 0.75Mpc apart, tracing the SSW-NNE direction and dominated by the two brightest cluster galaxies (BCG1 and BCG2). The X-ray surface brightness is strongly elongated towards the NNE direction, and its peak is clearly offset from both the brightest cluster galaxies (BCGs). We confirm the presence of a 1.3Mpc large radio halo, elongated in the ESE-WNW direction and perpendicular to the optical/X-ray elongation. We detect a significant radio/X-ray offset and radio polarization, two features which might be the result of a magnetic field energy spread on large spatial scales. A523 is found consistent with most scaling relations followed by clusters hosting radio haloes, but quite peculiar in the P_radio_-L_X_ relation: it is underluminous in the X-rays or overluminous in radio. A523 can be described as a binary head-on merger caught after a collision along the SSW-NNE direction. However, minor optical and radio features suggest a more complex cluster structure, with A523 forming at the crossing of two filaments along the SSW-NNE and ESE-WNW directions.
