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2101. CASH project II. 14 extremely metal-poor stars
ID:
ivo://CDS.VizieR/J/ApJ/742/54
Title:
CASH project II. 14 extremely metal-poor stars
Short Name:
J/ApJ/742/54
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a comprehensive abundance analysis of 20 elements for 16 new low-metallicity stars from the Chemical Abundances of Stars in the Halo (CASH) project. The abundances have been derived from both Hobby-Eberly Telescope High Resolution Spectrograph snapshot spectra (R~15000) and corresponding high-resolution (R~35000) Magellan Inamori Kyocera Echelle spectra. The stars span a metallicity range from [Fe/H] from -2.9 to -3.9, including four new stars with [Fe/H]<-3.7. We find four stars to be carbon-enhanced metal-poor (CEMP) stars, confirming the trend of increasing [C/Fe] abundance ratios with decreasing metallicity. Two of these objects can be classified as CEMP-no stars, adding to the growing number of these objects at [Fe/H]<-3. We also find four neutron-capture-enhanced stars in the sample, one of which has [Eu/Fe] of 0.8 with clear r-process signatures. These pilot sample stars are the most metal-poor ([Fe/H]<~-3.0) of the brightest stars included in CASH and are used to calibrate a newly developed, automated stellar parameter and abundance determination pipeline. This code will be used for the entire ~500 star CASH snapshot sample. We find that the pipeline results are statistically identical for snapshot spectra when compared to a traditional, manual analysis from a high-resolution spectrum.
2102. CAS parameters of 199 nearby galaxies
ID:
ivo://CDS.VizieR/J/ApJ/659/162
Title:
CAS parameters of 199 nearby galaxies
Short Name:
J/ApJ/659/162
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a quantitative analysis of the morphologies for 199 nearby galaxies as parameterized with measurements of the concentration, asymmetry, and clumpiness (CAS) parameters at wavelengths from 0.15 to 0.85um. We find that these CAS parameters depend on both galaxy type and the wavelength of observation. As such, we use them to obtain a quantitative measure of the "morphological k-correction", i.e., the change in appearance of a galaxy with rest-frame wavelength.
2103. Cassification of RR Lyrae and Cepheid
ID:
ivo://CDS.VizieR/J/A+A/620/A127
Title:
Cassification of RR Lyrae and Cepheid
Short Name:
J/A+A/620/A127
Date:
21 Oct 2021
Publisher:
CDS
Description:
The second data release of the Gaia mission (DR2) includes an advance catalogue of variable stars. The classifications of these stars are based on sparse photometry from the first 22 months of the mission. We set out to investigate the purity and completeness of the all-sky Gaia classification results with the help of the continuous light curves of the observed targets from the Kepler and K2 missions, focusing specifically on RR Lyrae and Cepheid pulsators, outside the Galactic bulge region. We cross-matched the Gaia identifications with the observations collected by the Kepler space telescope. We inspected the light curves visually, then calculated the relative Fourier coefficients and period ratios for the single- and double-mode K2 RR Lyrae stars to further classify them. We identified 1443 and 41 stars classified as RR Lyrae or Cepheid variables in Gaia DR2 in the targeted observations of the two missions and 263 more RR Lyre targets in the full-frame images (FFI) of the original mission. We provide the cross-match of these sources. We conclude that the RR Lyrae catalogue has a completeness between 70-78%, and provide a purity estimate of between 92-98% (targeted observations) with lower limits of 75% (FFI stars) and 51% (K2 worst-case scenario). The low number of Cepheids prevents us from drawing detailed conclusions, but the purity of the DR2 sample is estimated to be about 66%.
2104. Cassini ISS astrometry of Saturnian satellites
ID:
ivo://CDS.VizieR/J/AJ/149/27
Title:
Cassini ISS astrometry of Saturnian satellites
Short Name:
J/AJ/149/27
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present numerically derived orbits and mass estimates for the inner Saturnian satellites, Atlas, Prometheus, Pandora, Janus, and Epimetheus from a fit to 2580 new Cassini Imaging Science Subsystem astrometric observations spanning 2004 February to 2013 August. The observations are provided as machine-readable and Virtual Observatory tables. We estimate GM_Atlas_=(0.384+/-0.001)x10^-3^km^3^/s^2^, a value 13% smaller than the previously published estimate but with an order of magnitude reduction in the uncertainty. We also find GM_Prometheus_=(10.677+/-0.006)x10^-3^km^3^/s^2^, GM_Pandora_=(9.133+/-0.009)x10^-3^km^3^/s^2^, GM_Janus_=(126.51+/-0.03)x10^-3^km^3^/s^2^, and GM_Epimetheus_=(35.110+/-0.009)x10^-3^km^3^/s^2^, consistent with previously published values, but also with significant reductions in uncertainties. We show that Atlas is currently librating in both the 54:53 co-rotation-eccentricity resonance (CER) and the 54:53 inner Lindblad (ILR) resonance with Prometheus, making it the latest example of a coupled CER-ILR system, in common with the Saturnian satellites Anthe, Aegaeon, and Methone, and possibly Neptune's ring arcs. We further demonstrate that Atlas's orbit is chaotic, with a Lyapunov time of ~10years, and show that its chaotic behavior is a direct consequence of the coupled resonant interaction with Prometheus, rather than being an indirect effect of the known chaotic interaction between Prometheus and Pandora. We provide an updated analysis of the second-order resonant perturbations involving Prometheus, Pandora, and Epimetheus based on the new observations, showing that these resonant arguments are librating only when Epimetheus is the innermost of the co-orbital pair, Janus and Epimetheus. We also find evidence that the known chaotic changes in the orbits of Prometheus and Pandora are not confined to times of apse anti-alignment.
2105. Castor stream members compilative list
ID:
ivo://CDS.VizieR/J/BaltA/24/421
Title:
Castor stream members compilative list
Short Name:
J/BaltA/24/421
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a compilative list of Castor stream members compiled based on the data from various authors found in publications as Castor star stream membership. A set of astrophysical parameters such as distances from the Sun, radial velocities, multiplicity presented from different sources.
2106. Cataclysmic binaries
ID:
ivo://CDS.VizieR/V/82
Title:
Cataclysmic binaries
Short Name:
V/82
Date:
21 Oct 2021
Publisher:
CDS
Description:
This compilation contains the current content (as of 1 September 1993) of the Catalogue of cataclysmic binaries, low-mass X-ray binaries and related objects (previous version: A&AS 85, 1179, catalogue <V/59>) Please refer to the introduction (file "intro.tex") for a more complete introduction.
2107. Cataclysmic Binaries and LMXB Catalogue
ID:
ivo://CDS.VizieR/V/99
Title:
Cataclysmic Binaries and LMXB Catalogue
Short Name:
V/99
Date:
21 Oct 2021
Publisher:
CDS
Description:
Cataclysmic Binaries are semi-detached binaries consisting of a white dwarf or a white dwarf precursor primary and a low-mass secondary which is filling its critical Roche lobe. The secondary is not necessarily unevolved, it may even be a highly evolved star as for example in the case of the AM CVn-type stars. Low-Mass X-Ray Binaries are semi-detached binaries consisting of either a neutron star or a black hole primary, and a low-mass secondary which is filling its critical Roche lobe. Related Objects are detached binaries consisting of either a white dwarf or a white dwarf precursor primary and of a low-mass secondary. The secondary may also be a highly evolved star. The catalogue lists coordinates, apparent magnitudes, orbital parameters, stellar parameters of the components and other characteristic properties of 318 cataclysmic binaries, 47 low-mass X-ray binaries and 49 related objects with known or suspected orbital periods together with a comprehensive selection of the relevant recent literature. In addition the catalogue contains a list of references to published finding charts for 394 of the 414 objects. A cross-reference list of alias object designations concludes the catalogue. Literature published before 30 June 1997 has, as far as possible, been taken into account. This catalogue supersedes the 5th edition (catalogue <V/59>) and the updated list by Ritter and Kolb (1995; catalogue <V/82>).
2109. Cataclysmic Binaries, LMXBs, and related objects
ID:
ivo://CDS.VizieR/V/113D
Title:
Cataclysmic Binaries, LMXBs, and related objects
Short Name:
V/113D
Date:
21 Oct 2021
Publisher:
CDS
Description:
Cataclysmic Binaries are semi-detached binaries consisting of a white dwarf or a white dwarf precursor primary and a low-mass secondary which is filling its critical Roche lobe. The secondary is not necessarily unevolved, it may even be a highly evolved star as for example in the case of the AM CVn-type stars. Low-Mass X-Ray Binaries are semi-detached binaries consisting of either a neutron star or a black hole primary, and a low-mass secondary which is filling its critical Roche lobe. Related Objects are detached binaries consisting of either a white dwarf or a white dwarf precursor primary and of a low-mass secondary. The secondary may also be a highly evolved star. The catalogue lists coordinates, apparent magnitudes, orbital parameters, stellar parameters of the components and other characteristic properties of 572 cataclysmic binaries, 80 low-mass X-ray binaries and 142 related objects with known or suspected orbital periods together with a comprehensive selection of the relevant recent literature. In addition the catalogue contains a list of references to published finding charts for 761 of the 794 objects. A cross-reference list of alias object designations concludes the catalogue. Literature published before 31 December 2004 has, as far as possible, been taken into account. This catalogue supersedes the 5th edition (catalogue <V/59>) and the updated lists by Ritter and Kolb (1995; catalogue <V/82>) (1998; catalogue <V/99>).
2110. Cataclysmic Binaries, LMXBs and related objects, 5th Ed.
ID:
ivo://CDS.VizieR/V/59
Title:
Cataclysmic Binaries, LMXBs and related objects, 5th Ed.
Short Name:
V/59
Date:
21 Oct 2021
Publisher:
CDS
Description:
The catalogue lists coordinates, magnitudes, orbital parameters, stellar parameters of the components and other characteristic properties of 168 cataclysmic binaries, 36 low-mass X-ray binaries and 28 related objects with known or suspected orbital periods together with a comprehensive selection of the relevant literature that appeared after 1986. In addition the catalogue contains a list of references to published finding charts for 222 of the 232 objects. A cross-reference list of object designations concludes the catalogue.

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