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11. A and F stars abundances in the Hyades
ID:
ivo://CDS.VizieR/J/A+A/523/A71
Title:
A and F stars abundances in the Hyades
Short Name:
J/A+A/523/A71
Date:
21 Oct 2021
Publisher:
CDS
Description:
Abundances of 15 chemical elements have been derived for 28 F and 16 A stars members of the Hyades open cluster in order to set constraints on self-consistent evolutionary models that include radiative and turbulent diffusion A spectral synthesis, iterative procedure was applied to derive the abundances from selected high-quality lines in high-resolution, high-signal-to-noise spectra obtained with SOPHIE and AURELIE at the Observatoire de Haute Provence.
12. A 24 and 70 Micron Survey of the Inner Galactic Disk with MIPS
ID:
ivo://irsa.ipac/Spitzer/Images/MIPSGAL
Title:
A 24 and 70 Micron Survey of the Inner Galactic Disk with MIPS
Short Name:
MIPSGAL
Date:
27 Oct 2022 19:00:00
Publisher:
NASA/IPAC Infrared Science Archive
Description:
MIPSGAL is a survey of the inner 248 square degrees of the Galactic plane at 24 and 70 microns using the MIPS instrument aboard the Spitzer Space Telescope. The survey covers Galactic latitudes of -1° < b < +1° for Galactic longitudes of l < 62° and l > 298°. Version 3.0 of the MIPSGAL data includes mosaics only at 24um, but covering the entire survey region. |b| < 1° is covered for -68° < l < 69°, and |b| < 3° is covered for -8° < l < 9°.
13. 15273{AA} near-infrared DIB
ID:
ivo://CDS.VizieR/J/A+A/628/A67
Title:
15273{AA} near-infrared DIB
Short Name:
J/A+A/628/A67
Date:
21 Oct 2021
Publisher:
CDS
Description:
The latest SDSS/APOGEE data release DR14 has provided an increased number of stellar spectra in the H band and associated stellar models using an innovative algorithm known as The Cannon. We took advantage of these novelties to extract the 15273{AA} near-infrared DIB and to study its link with dust extinction and emission. We modified our automated fitting methods dedicated for hot stars and used in earlier studies with some adaptations motivated by the change from early- or intermediate-type stars to red giants. A new method has also been developed to quantify the upper limits on DIB strengths. Careful and thorough examinations of the DIB parameters, the continuum shape and the quality of the adjustment of the model to the data were done. We compared our DIB measurements with the stellar extinctions Av from the Starhorse database. We then compared the resulting DIB-extinction ratio with the dust optical depth derived from Planck data, globally and also separately for nearby off-Plane cloud complexes. Our analysis has led to the production of a catalog containing 124 064 new measurements of the 15273{AA} DIB, allowing us to revisit the correlation between DIB strength and dust reddening.
14. A3407 + A3408 radial velocities
ID:
ivo://CDS.VizieR/J/MNRAS/460/2193
Title:
A3407 + A3408 radial velocities
Short Name:
J/MNRAS/460/2193
Date:
21 Oct 2021
Publisher:
CDS
Description:
We carried out a dynamical study of the galaxy cluster pair A3407 and A3408 based on a spectroscopic survey obtained with the 4 metre Blanco telescope at the Cerro Tololo Interamerican Observatory, plus 6dF data, and ROSAT All-Sky Survey. The sample consists of 122 member galaxies brighter than m_R_=20. Our main goal is to probe the galaxy dynamics in this field and verify if the sample constitutes a single galaxy system or corresponds to an ongoing merging process. Statistical tests were applied to clusters members showing that both the composite system A3407 + A3408 as well as each individual cluster have Gaussian velocity distribution. A velocity gradient of ~847+/-114km/s was identified around the principal axis of the projected distribution of galaxies, indicating that the global field may be rotating. Applying the kmm algorithm to the distribution of galaxies, we found that the solution with two clusters is better than the single unit solution at the 99 per cent cl. This is consistent with the X-ray distribution around this field, which shows no common X-ray halo involving A3407 and A3408. We also estimated virial masses and applied a two-body model to probe the dynamics of the pair. The more likely scenario is that in which the pair is gravitationally bound and probably experiences a collapse phase, with the cluster cores crossing in less than ~1h^-1^Gyr, a pre-merger scenario. The complex X-ray morphology, the gas temperature, and some signs of galaxy evolution in A3408 suggest a post-merger scenario, with cores having crossed each other ~1.65h^-1^Gyr ago, as an alternative solution.
15. 3060-3700{AA} spectra analysis of early-type stars
ID:
ivo://CDS.VizieR/J/ApJS/216/22
Title:
3060-3700{AA} spectra analysis of early-type stars
Short Name:
J/ApJS/216/22
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present a comprehensive and sensitive unbiased survey of interstellar features in the near-UV range (3050-3700{AA}). We combined a large number of VLT/UVES archival observations of a sample of highly reddened early-type stars -typical diffuse interstellar band targets- and unreddened standards. We stacked the individual observations to obtain a reddened "superspectrum" in the interstellar rest frame with a signal-to-noise ratio exceeding 1500. We compared this to the analogous geocentric and stellar rest frame superspectra as well as to an unreddened superspectrum to find interstellar absorption features. We find 30 known features (11 atomic and 19 molecular) and tentatively detect up to 7 new interstellar absorption lines of unknown origin. Our survey is sensitive to narrow and weak features; telluric residuals preclude us from detecting broader features. For each sightline, we measured fundamental parameters (radial velocities, line widths, and equivalent widths) of the detected interstellar features. We also revisit upper limits for the column densities of small, neutral polycyclic aromatic hydrocarbon molecules that have strong transitions in this wavelength range.
16. 3000-25000{AA} spectroscopy of nearby M dwarfs
ID:
ivo://CDS.VizieR/J/ApJ/850/34
Title:
3000-25000{AA} spectroscopy of nearby M dwarfs
Short Name:
J/ApJ/850/34
Date:
21 Oct 2021
Publisher:
CDS
Description:
Recent studies of the stellar population in the solar neighborhood (<20pc) suggest that there are undetected white dwarfs (WDs) in multiple systems with main-sequence companions. Detecting these hidden stars and obtaining a more complete census of nearby WDs is important for our understanding of stellar and galactic evolution, as well as the study of explosive phenomena. In an attempt to uncover these hidden WDs, we present intermediate resolution spectroscopy over the wavelength range of 3000-25000{AA} of 101 nearby M dwarfs (dMs), observed with the Very Large Telescope X-Shooter spectrograph. For each star we search for a hot component superimposed on the dM spectrum. X-Shooter has excellent blue sensitivity and thus can reveal a faint hot WD despite the brightness of its red companion. Visual examination shows no clear evidence of a WD in any of the spectra. We place upper limits on the effective temperatures of WDs that may still be hiding by fitting dM templates to the spectra and modeling the WD spectra. On average our survey is sensitive to WDs hotter than about 5300K. This suggests that the frequency of WD companions of Teff>~5300K with separation of the order of <~50 au among the local dM population is <3% at the 95% confidence level.
17. AAVSO International Variable Star Index
ID:
ivo://nasa.heasarc/aavsovsx
Title:
AAVSO International Variable Star Index
Short Name:
AAVSOVSX
Date:
14 Feb 2025
Publisher:
NASA/GSFC HEASARC
Description:
This database table contains Galactic stars known or suspected to be variable. It lists all stars that have an entry in the American Association of Variable Star Observers&#39; (AAVSO) International Variable Star Index (VSX; &lt;a href="http://www.aavso.org/vsx"&gt;http://www.aavso.org/vsx&lt;/a&gt;). It consisted initially of the General Catalogue of Variable Stars (GCVS) and the New Catalogue of Suspected Variables (NSV) and was then supplemented with a large number of variable star catalogues, as well as individual variable star discoveries or variables found in the literature. Effort has also been invested to update the entries with the latest information regarding position, type and period and to remove duplicates. The VSX database is being continually updated and maintained. For historical reasons some objects outside of the Galaxy have been included. This table was created by the HEASARC based on the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/B/vsx"&gt;CDS catalog B/vsx&lt;/a&gt;. The CDS updates it regularly, and this HEASARC version is accordingly updated within a week of such updates. This is a service provided by NASA HEASARC .
18. AAVSO International Variable Star Index VSX
ID:
ivo://CDS.VizieR/B/vsx
Title:
AAVSO International Variable Star Index VSX
Short Name:
B/vsx
Date:
07 Mar 2022 08:38:01
Publisher:
CDS
Description:
This file contains Galactic stars known or suspected to be variable. It lists all stars that have an entry in the AAVSO International Variable Star Index (VSX; http://www.aavso.org/vsx). The database consisted initially of the General Catalogue of Variable Stars (GCVS) and the New Catalogue of Suspected Variables (NSV) and was then supplemented with a large number of variable star catalogues, as well as individual variable star discoveries or variables found in the literature. Effort has also been invested to update the entries with the latest information regarding position, type and period and to remove duplicates. The VSX database is being continually updated and maintained. For historical reasons some objects outside of the Galaxy have been included.
19. AAVSO Photometric All Sky Survey (APASS) DR9
ID:
ivo://CDS.VizieR/II/336
Title:
AAVSO Photometric All Sky Survey (APASS) DR9
Short Name:
II/336
Date:
21 Oct 2021
Publisher:
CDS
Description:
The AAVSO Photometric All Sky Survey (APASS) project is designed to bridge the gap between the shallow Tycho2 two-bandpass photometric catalog that is complete to V=11 and the deeper, but less spatially-complete catalogs like SDSS or PanSTARRS. It can be used for calibration of a specific field; for obtaining spectral information about single sources, determining reddening in a small area of the sky; or even obtaining current-epoch astrometry for rapidly moving objects. The survey is being performed at two locations: near Weed, New Mexico in the Northern Hemisphere; and at CTIO in the Southern Hemisphere. Each site consists of dual bore-sighted 20cm telescopes on a single mount, designed to obtain two bandpasses of information simultaneously. Each telescope covers 9 square degrees of sky with 2.5arcsec pixels, with the main survey taken with B,V,g',r',i' filters and covering the magnitude range 10<V<17. A bright extension is underway, saturating at V=7 and extending the wavelength coverage from u' to Y. The current catalog is Data Release 9 and contains approximately 62 million stars. The American Association of Variable Star Observers is responsible for the overall management of the survey; a team of professional astronomers participate in the data analysis. The project was initially funded by the Robert Martin Ayers Sciences Fund, with a follow-on grant from the National Science Foundation.
20. AAVSO Photometric All Sky Survey (APASS) DR10
ID:
ivo://org.gavo.dc/apass/q/cone
Title:
AAVSO Photometric All Sky Survey (APASS) DR10
Short Name:
APASS DR10 cone
Date:
27 Dec 2024 08:31:05
Publisher:
The GAVO DC team
Description:
AAVSO Photometric All-Sky Survey (APASS), underway since 2010, covers the entire sky from 7.5 < V < 16.5 magnitude, and in the BVugrizY bandpasses. A northern and a southern site are used, each with twin ASA 20cm astrographs and Apogee Aspen CG16m cameras, covering 2.9x2.9 square degrees with 2.6arcsec pixels. Landolt and SDSS standards are used for all-sky solutions, with typical 0.02mag calibration errors on the bright end. Data Release 10 is a complete reprocessing of all 500K images taken with the system, including hundreds of nights not part of DR9. Sextractor is used for star finding and centroiding; DAOPHOT is used for aperture photometry; the astrometry.net plate-solving library is used for basic astrometry, supplanted with more precise WCS that utilizes knowledge of the optical train distortions. With these changes, DR10 includes many more stars than prior releases. More information is available at http://www.aavso.org/apass.

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