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14711. Stellar kinematics in CALIFA survey
ID:
ivo://CDS.VizieR/J/A+A/597/A48
Title:
Stellar kinematics in CALIFA survey
Short Name:
J/A+A/597/A48
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the stellar kinematic maps of a large sample of galaxies from the integral-field spectroscopic survey CALIFA. The sample comprises 300 galaxies displaying a wide range of morphologies across the Hubble sequence, from ellipticals to late-type spirals. This dataset allows us to homogeneously extract stellar kinematics up to several effective radii. In this paper, we describe the level of completeness of this subset of galaxies with respect to the full CALIFA sample, as well as the virtues and limitations of the kinematic extraction compared to other well-known integral-field surveys. In addition, we provide averaged integrated velocity dispersion radial profiles for different galaxy types, which are particularly useful to apply aperture corrections for single aperture measurements or poorly resolved stellar kinematics of high-redshift sources. The work presented in this paper sets the basis for the study of more general properties of galaxies that will be explored in subsequent papers of the survey.
14712. Stellar kinematics in spiral galaxies
ID:
ivo://CDS.VizieR/J/A+AS/133/317
Title:
Stellar kinematics in spiral galaxies
Short Name:
J/A+AS/133/317
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present the results of absorption spectroscopy on the inner region of 34 Sa-Sc galaxies. We have determined the central velocity dispersion and, for 32 of these objects, stellar rotation curves and velocity-dispersion profiles. Some of these profiles are limited to the bulge, some others do reach a region dominated by the luminosity of the disk. These data are intended to provide basic material for the study of the mass distribution and dynamical status in the central regions of spiral galaxies. Although no elaborate bulge-and-disk photometric decomposition is performed, we estimate the effects of limited resolution and contamination by disk light on the central velocity dispersion of the bulge.
14713. Stellar kinematics in spiral galaxies. II.
ID:
ivo://CDS.VizieR/J/A+AS/136/509
Title:
Stellar kinematics in spiral galaxies. II.
Short Name:
J/A+AS/136/509
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a second dataset of absorption spectroscopy on the inner region of spiral galaxies. We have determined the central velocity dispersion for 42 Sa-Sc objects and, for 32 of them, stellar rotation curves and velocity-dispersion profiles. Some of these profiles are limited to the bulge, some others do reach a region dominated by the luminosity of the disk. These data are intended to provide basic material for the study of the mass distribution and dynamical status in the central regions of spiral galaxies. Although no elaborate bulge-and-disk photometric decomposition is performed, we estimate the effects of limited resolution and contamination by disk light on the central velocity dispersion of the bulge. All the material presented in this paper, in particular the spectra, is available on-line.
14714. Stellar latitudinal differential rotation
ID:
ivo://CDS.VizieR/J/A+A/446/267
Title:
Stellar latitudinal differential rotation
Short Name:
J/A+A/446/267
Date:
21 Oct 2021
Publisher:
CDS
Description:
More than 600 high resolution spectra of stars with spectral type F and later were obtained in order to search for signatures of differential rotation in line profiles. In 147 stars the rotation law could be measured, with 28 of them found to be differentially rotating.
14715. Stellar magnetic rotational phase curves
ID:
ivo://CDS.VizieR/J/A+A/430/1143
Title:
Stellar magnetic rotational phase curves
Short Name:
J/A+A/430/1143
Date:
21 Oct 2021
Publisher:
CDS
Description:
Magnetized stars usually exhibit periodic variations of the effective (longitudinal) magnetic field B_e_ caused by their rotation. We present a catalog of magnetic rotational phase curves, B_e_ vs. the rotational phase phi, and tables of their parameters for 136 stars on the main sequence and above it. Phase curves were obtained by the least squares fitting of sine wave or double wave functions to the available B_e_ measurements, which were compiled from the existing literature. Most of the catalogued objects are chemically peculiar A and B type stars (127 stars). For some stars we also improved or determined periods of their rotation. We discuss the distribution of parameters describing magnetic rotational phase curves in our sample.
14716. Stellar magnetic rotational phase curves. II
ID:
ivo://CDS.VizieR/J/A+A/652/A31
Title:
Stellar magnetic rotational phase curves. II
Short Name:
J/A+A/652/A31
Date:
22 Feb 2022
Publisher:
CDS
Description:
Some stars show periodic variability of the longitudinal (effective) global magnetic field B_e_ mainly due to rotation. We present the second version of the catalog of average magnetic phase curves, which are functions of B_e_ versus the rotational phase phi, tables of their parameters. The curves were obtained from literary data and as the result of observations from SAO RAS telescopes. A total of 357 stars of various spectral types were studied, data on which was published before the end of August 2020. Magnetic Ap and Bp stars make up the most numerous a subset in the catalog (224 objects). Phase curves were obtained by least squares fit of a simple sine wave or a double sine wave to the available B_e measurements. For some stars we also improved or determined periods of their rotation. Phase curves also are presented in 514 figures. In some cases several phase curves presented here correspond to the same star. This occurred when different observational techniques produced significantly different series of B_e_ values for that star. In a few cases the rotational phase curves of the surface field, B_s_, are given for stars where longitudinal magnetic field data were not available.
14717. Stellar magnetism, age and rotation
ID:
ivo://CDS.VizieR/J/MNRAS/441/2361
Title:
Stellar magnetism, age and rotation
Short Name:
J/MNRAS/441/2361
Date:
21 Oct 2021
Publisher:
CDS
Description:
We investigate how the observed large-scale surface magnetic fields of low-mass stars (~0.1-2M_{sun}_), reconstructed through Zeeman-Doppler imaging, vary with age t, rotation and X-ray emission. Our sample consists of 104 magnetic maps of 73 stars, from accreting pre-main sequence to main-sequence objects (1Myr<~t<~10Gyr). For non-accreting dwarfs we empirically find that the unsigned average large-scale surface field is related to age as t^-0.655+/-0.045^. This relation has a similar dependence to that identified by Skumanich, used as the basis for gyrochronology. Likewise, our relation could be used as an age-dating method ('magnetochronology'). The trends with rotation we find for the large-scale stellar magnetism are consistent with the trends found from Zeeman broadening measurements (sensitive to large- and small-scale fields). These similarities indicate that the fields recovered from both techniques are coupled to each other, suggesting that small- and large-scale fields could share the same dynamo field generation processes. For the accreting objects, fewer statistically significant relations are found, with one being a correlation between the unsigned magnetic flux and rotation period. We attribute this to a signature of star-disc interaction, rather than being driven by the dynamo.
14718. Stellar Maser Observations
ID:
ivo://CDS.VizieR/V/68A
Title:
Stellar Maser Observations
Short Name:
V/68A
Date:
21 Oct 2021
Publisher:
CDS
Description:
This catalog contains about 2958 stellar sources. For the searching of the maser emission of the sources listed, 368 were detected in H2O, 209 in SiO, and 713 in OH. In the catalog, one can find information about the stars including alternate names, the 1950 epoch position, velocity (LSR), spectral type, variability type, and period, as well as the references for both the detections and nondetections for each of the three molecules. In this catalog, Table 1 lists all the sources in right ascension order, Table 2 lists the references for all the maser observations for each source, and Table 3 lists the references in code order, i.e., in chronological order.
14719. Stellar-mass black holes in the SDSS
ID:
ivo://CDS.VizieR/J/ApJ/596/437
Title:
Stellar-mass black holes in the SDSS
Short Name:
J/ApJ/596/437
Date:
21 Oct 2021
Publisher:
CDS
Description:
We search for nearby, isolated, accreting, "stellar-mass" (3-100M_{sun}_) black holes. Models suggest a synchrotron spectrum in visible wavelengths and some emission in X-ray wavelengths. Of 3.7 million objects in the Sloan Digital Sky Survey Early Data Release, Cat. <J/AJ/123/567>, about 150,000 objects have colors and properties consistent with such a spectrum, and 87 of these objects are X-ray sources from the ROSAT All-Sky Survey (Cat. <IX/10> and <IX/29>). Thirty-two of these have been confirmed not to be black holes using optical spectra. We give the positions and colors of these 55 black hole candidates and quantitatively rank them on their likelihood to be black holes. We discuss uncertainties in the expected number of sources and the contribution of black holes to local dark matter.
14720. Stellar Mass Catalogue
ID:
ivo://CDS.VizieR/V/85A
Title:
Stellar Mass Catalogue
Short Name:
V/85A
Date:
21 Oct 2021
Publisher:
CDS
Description:
The catalogue includes binary stars for which dynamical masses of components has been published in 1969 - 1988. It doesn't contain other compilation catalogues that was published in this two decades and uses original data papers only. It collects masses defined by direct, dynamical methods only (without use of mass-luminosity, mass-radius, mass-spectrum and similar relations). The work was supervised by Dr O. Malkov.

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