- ID:
- ivo://CDS.VizieR/J/ApJ/814/121
- Title:
- CASH project. III. The CEMP star HE0414-0343
- Short Name:
- J/ApJ/814/121
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a detailed abundance analysis of 23 elements for a newly discovered carbon-enhanced metal-poor (CEMP) star, HE0414-0343, from the Chemical Abundances of Stars in the Halo Project. Its spectroscopic stellar parameters are T_eff_=4863K, logg=1.25, {xi}=2.20km/s, and [Fe/H]=-2.24. Radial velocity measurements covering seven years indicate HE 0414-0343 to be a binary. HE0414-0343 has [C/Fe]=1.44 and is strongly enhanced in neutron-capture elements but its abundances cannot be reproduced by a solar-type s-process pattern alone. Traditionally, it could be classified as a "CEMP-r/s" star. Based on abundance comparisons with asymptotic giant branch (AGB) star nucleosynthesis models, we suggest a new physically motivated origin and classification scheme for CEMP-s stars and the still poorly understood CEMP-r/s. The new scheme describes a continuous transition between these two so-far distinctly treated subgroups: CEMP-sA, CEMP-sB, and CEMP-sC. Possible causes for a continuous transition include the number of thermal pulses the AGB companion underwent, the effect of different AGB star masses on their nucleosynthetic yields, and physics that is not well approximated in 1D stellar models such as proton ingestion episodes and rotation. Based on a set of detailed AGB models, we suggest the abundance signature of HE 0414-0343 to have arisen from a >1.3M_{sun}_ mass AGB star and a late-time mass transfer that transformed HE 0414-0343 into a CEMP-sC star. We also find that the [Y/Ba] ratio well parametrizes the classification and can thus be used to easily classify any future such stars.
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- 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.
- 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%.
- ID:
- ivo://CDS.VizieR/J/ApJS/244/14
- Title:
- Cassini CIRS observations of Titan 2004-2017
- Short Name:
- J/ApJS/244/14
- Date:
- 28 Dec 2021 09:28:19
- Publisher:
- CDS
- Description:
- From 2004 to 2017, the Cassini spacecraft orbited Saturn, completing 127 close flybys of its largest moon, Titan. Cassini's Composite Infrared Spectrometer (CIRS), one of 12 instruments carried on board, profiled Titan in the thermal infrared (7-1000{mu}m) throughout the entire 13yr mission. CIRS observed on both targeted encounters (flybys) and more distant opportunities, collecting 8.4 million spectra from 837 individual Titan observations over 3633hr. Observations of multiple types were made throughout the mission, building up a vast mosaic picture of Titan's atmospheric state across spatial and temporal domains. This paper provides a guide to these observations, describing each type and chronicling its occurrences and global-seasonal coverage. The purpose is to provide a resource for future users of the CIRS data set, as well as those seeking to put existing CIRS publications into the overall context of the mission, and to facilitate future intercomparison of CIRS results with those of other Cassini instruments and ground-based observations.
- 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.
2696. Cassini VIMS
- ID:
- ivo://padc.obspm.planeto/vims_satellites/q/epn_core
- Title:
- Cassini VIMS
- Short Name:
- VIMS satellites
- Date:
- 26 Feb 2025 13:48:28
- Publisher:
- Paris Astronomical Data Centre
- Description:
- The Visual and Infrared Mapping Spectrometer (VIMS) instrument onboard the Cassini spacecraft observed the system of Saturn, acquiring spectral cubes in the range 0.4-5.2 microns. This service focuses on Saturn satellites, and provides access to calibrated and ancillary data, computed as described here: https://vims.univ-nantes.fr/info/isis-calibration. It also provides direct links to a larger web site with previews.
- 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.
2698. 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.
- 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>).
- ID:
- ivo://CDS.VizieR/B/cb
- Title:
- Cataclysmic Binaries, LMXBs, and related objects
- Short Name:
- B/cb
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- (no description available)
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