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3421. Cr, Co, and Ni abundances for metal-poor red giants
ID:
ivo://CDS.VizieR/J/ApJS/237/18
Title:
Cr, Co, and Ni abundances for metal-poor red giants
Short Name:
J/ApJS/237/18
Date:
21 Oct 2021
Publisher:
CDS
Description:
We present measurements of the abundances of chromium, cobalt, and nickel in 4113 red giants, including 2277 stars in globular clusters (GCs), 1820 stars in the Milky Way's dwarf satellite galaxies, and 16 field stars. We measured the abundances from mostly archival Keck/DEIMOS medium-resolution spectroscopy with a resolving power of R~6500 and a wavelength range of approximately 6500-9000{AA}. The abundances were determined by fitting spectral regions that contain absorption lines of the elements under consideration. We used estimates of temperature, surface gravity, and metallicity that we previously determined from the same spectra. We estimated systematic error by examining the dispersion of abundances within mono- metallic GCs. The median uncertainties for [Cr/Fe], [Co/Fe], and [Ni/Fe] are 0.20, 0.20, and 0.13, respectively. Finally, we validated our estimations of uncertainty through duplicate measurements, and we evaluated the accuracy and precision of our measurements through comparison to high-resolution spectroscopic measurements of the same stars.
3422. 8C Revised Rees Survey 38-MHz Source Catalog
ID:
ivo://nasa.heasarc/rrs8c38mhz
Title:
8C Revised Rees Survey 38-MHz Source Catalog
Short Name:
RRS8C38MHZ
Date:
09 May 2025
Publisher:
NASA/GSFC HEASARC
Description:
This table contains a revised machine-readable source list for the Rees 38-MHz (or '8C') survey with improved positions and no redundancy. The Rees 38-MHz survey covers an area of about 1 sr north of declination +60 degrees. The angular resolution is 4.5 x 4.5 cosec(Dec) arcmin<sup>2</sup> and the limiting flux density over much of the survey area is about 1 Jy. Both of these figures were an improvement by nearly an order of magnitude on previous surveys at this frequency. Users of these data should consult and cite the original survey paper by Rees as primary reference (1990MNRAS.244..233R) with the present publication (1995MNRAS.274..447H) as a supplementary revision. The recommended style of reference is thus: "The revised Rees 38-MHz survey (Rees 1990, catalogue revised Hales et. al 1995)." In the Hales et al. (1995) paper, the authors aimed to improve the accuracy of the source positions to <~ 1 arcminute, so that a search radius smaller than the survey resolution of 4.5 arcminutes was practicable everywhere. Note that for interest the source list includes data on some sources at declinations lower than +60 degrees, but that the right ascension coverage is not complete below +60 degrees. This table was created in November 2010 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/VIII/31">CDS catalog VIII/31</a> file 8c.dat. Some of the values for the name parameter in the HEASARC's implementation of this table were corrected in April 2018. This is a service provided by NASA HEASARC .
3423. CRIc photometry of Magellanic Bridge Fields
ID:
ivo://CDS.VizieR/J/ApJ/658/345
Title:
CRIc photometry of Magellanic Bridge Fields
Short Name:
J/ApJ/658/345
Date:
21 Oct 2021
Publisher:
CDS
Description:
We report on observations of the stellar populations in 12 fields spanning the region between the Magellanic Clouds, made with the Mosaic II camera on the 4m telescope at the Cerro-Tololo Inter-American Observatory. The two main goals of the observations are to characterize the young stellar population (which presumably formed in situ in the Bridge and therefore represents the nearest stellar population formed from tidal debris), and to search for an older stellar component (which would have been stripped from either Cloud as stars, by the same tidal forces that formed the gaseous Bridge). We determine the star formation history of the young inter-Cloud population, which provides a constraint on the timing of the gravitational interaction that formed the Bridge. We do not detect an older stellar population belonging to the Bridge in any of our fields, implying that the material that was stripped from the Clouds to form the Magellanic Bridge was very nearly a pure gas.
3424. CRIRES-POP: high resolution IR spectra library
ID:
ivo://CDS.VizieR/J/A+A/539/A109
Title:
CRIRES-POP: high resolution IR spectra library
Short Name:
J/A+A/539/A109
Date:
21 Oct 2021
Publisher:
CDS
Description:
New instrumental capabilities and the wealth of astrophysical information extractable from the near-infrared wavelength region have led to a growing interest in the field of high resolution spectroscopy at 1-5m. We aim to provide a library of observed high-resolution and high signal-to-noise-ratio near-infrared spectra of stars of various types throughout the Hertzsprung-Russell diagram. This is needed for the exploration of spectral features in this wavelength range and for comparison of reference targets with observations and models.
3425. C3R2-KMOS zsp & galaxy physical properties
ID:
ivo://CDS.VizieR/J/A+A/642/A192
Title:
C3R2-KMOS zsp & galaxy physical properties
Short Name:
J/A+A/642/A192
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Complete Calibration of the Colour-Redshift Relation survey (C3R2) is a spectroscopic effort involving ESO and Keck facilities designed specifically to empirically calibrate the galaxy colour-redshift relation - P(zjC) to the Euclid depth (i_AB_=24.5) and is intimately linked to the success of upcoming Stage IV dark energy missions based on weak lensing cosmology. The aim is to build a spectroscopic calibration sample that is as representative as possible of the galaxies of the Euclid weak lensing sample. In order to minimise the number of spectroscopic observations necessary to fill the gaps in current knowledge of the P(zjC), self-organising map (SOM) representations of the galaxy colour space have been constructed. Here we present the first results of an ESO@VLT Large Programme approved in the context of C3R2, which makes use of the two VLT optical and near-infrared multi-object spectrographs, FORS2 and KMOS. This data release paper focuses on high-quality spectroscopic redshifts of high-redshift galaxies observed with the KMOS spectrograph in the near-infrared H- and K-bands. A total of 424 highly-reliable redshifts are measured in the 1.3<=z<=2.5 range, with total success rates of 60.7% in the H-band and 32.8% in the K-band. The newly determined redshifts fill 55% of high (mainly regions with no spectroscopic measurements) and 35% of lower (regions with low-resolution/low-quality spectroscopic measurements) priority empty SOMgrid cells.We measured H fluxes in a 1.2" radius aperture from the spectra of the spectroscopically confirmed galaxies and converted them into star formation rates. In addition, we performed an SED fitting analysis on the same sample in order to derive stellar masses, E(B-V), total magnitudes, and SFRs. We combine the results obtained from the spectra with those derived via SED fitting, and we show that the spectroscopic failures come from either weakly star-forming galaxies (at z<1.7, i.e. in the H-band) or low S/N spectra (in the K-band) of z>2 galaxies.
3426. CRL618, MWC922 and M2-9 RRL spectra
ID:
ivo://CDS.VizieR/J/A+A/603/A67
Title:
CRL618, MWC922 and M2-9 RRL spectra
Short Name:
J/A+A/603/A67
Date:
21 Oct 2021
Publisher:
CDS
Description:
We report the results from a pilot search for radio recombination line (RRL) emission at millimeter wavelengths in a small sample of pre-planetary nebulae (pPNe) and young PNe (yPNe) with emerging central ionized regions. Observations of the H30{alpha}, H31{alpha}, H39{alpha}, H41{alpha}, H48{beta}, H49{beta}, H51{beta}, and H55{gamma} lines at ~1 and ~3mm have been performed with the IRAM 30m radio telescope. These lines are excellent probes of the dense inner (<~150 au) and heavily obscured regions of these objects, where the yet unknown agents for PN-shaping originate. We detected mm-RRLs in three objects: CRL 618, MWC922, and M2-9. For CRL 618, the only pPN with previous published detections of H41{alpha}, H35{alpha}, and H30{alpha} emission, we find significant changes in the line profiles indicating that current observations are probing regions of the ionized wind with larger expansion velocities and mass-loss rate than ~29 years ago. In the case of MWC922, we observe a drastic transition from single-peaked profiles at 3mm (H39{alpha} and H41{alpha}) to double-peaked profiles at 1mm (H31{alpha} and H30{alpha}), which is consistent with maser amplification of the highest frequency lines; the observed line profiles are compatible with rotation and expansion of the ionized gas, probably arranged in a disk+wind system around a ~5-10M_{sun}_ central mass. In M2-9, the mm-RRL emission appears to be tracing a recent mass outburst by one of the stars of the central binary system. We present the results from non-LTE line and continuum radiative transfer models, which enables us to constrain the structure, kinematics, and physical conditions (electron temperature and density) of the ionized cores of our sample. We find temperatures Te~6000-17000K, mean densities ne~10^5^-10^8^cm^-3^, radial density gradients ne{prop.to}r^-alpha_n_^ whit alpha_n_~2-3.5, and motions of velocities of ~10-30km/s in the ionized wind regions traced by these mm-wavelength observations. We deduce mass-loss rates of dM_pAGB_/dt~=10^-6^-10^-7^M_{sun}_/yr, which are significantly higher than the values adopted by stellar evolution models currently in use and would result in a transition from the asymptotic giant branch to the PN phase faster than hitherto assumed.
3427. Cross identifications in NGC 1502
ID:
ivo://CDS.VizieR/J/AJ/114/222
Title:
Cross identifications in NGC 1502
Short Name:
J/AJ/114/222
Date:
21 Oct 2021
Publisher:
CDS
Description:
In studying this region Purgathofer (1964AnWie..26...37P) [the SIMBAD numbering], Hoag et al.(1961PUSNO..17..343H), and Dombrovskii and Hagen-Thorn (1964TrLen..20...75D) each set up their own numbering system; subsequent authors used one or another of those or variants or combinations. The region covered is 2 degrees in diameter, centered at: (2000) RA 04 04 53.28 dec +62 19 20.7. This is about 15' west of the cluster, the position of HD 25290.
3428. Cross-id. of stars with high-proper motions. V2.
ID:
ivo://CDS.VizieR/IV/30
Title:
Cross-id. of stars with high-proper motions. V2.
Short Name:
IV/30
Date:
21 Oct 2021
Publisher:
CDS
Description:
The catalogue of stars with high-proper motions (more than 0.04"/year) has been compiled using original definitions from catalogue FONAK 1.1, the data of catalogues Hipparcos, Tycho-2, CMC (STAR 11), PPM, NPM1, NPM2, UCAC2 (up to +40 degrees in declination and going up to +52 degrees in some areas), GCVS, XZ80Q, Pul-3, PUL2, NLTT, LHS, Lowell Proper Motion, Bruce Proper Motion as well as the data of about 770 other published sources. The list consist of 514100 such stars with limiting magnitude 16 (companions for multiple systems up to 17) in a declination zone from -2.5 to +90 degrees. Besides astrometric parameters (equatorial coordinates, proper motions, estimations of stars magnitudes) the catalogue includes some astrophysical characteristics (magnitudes in UBVRIJHK system, radial velocities, spectra, luminosity class, metallicity; flags of multiple system, of variable star and other). For convenience of usage original numbers of stars from different catalogues the author's lists of stars and basic sources are given too. At present the catalogue includes codes of 63 catalogues and author's lists of stars. Cross index list is given by a file of 493200 stars arranged on right ascension. Star information is recorded in a digital integer form with one line. Thus maximum amount of star numbers from catalogues and author's lists does not exceed 10 (if more, the number of next lines for star is increased by unit). Beginning the second line there are blanks in the column declination if star information is recorded in several lines. Cross index list is regularly supplemented.
3429. 3CR Source Identifications
ID:
ivo://CDS.VizieR/J/PASP/97/932
Title:
3CR Source Identifications
Short Name:
J/PASP/97/932
Date:
21 Oct 2021
Publisher:
CDS
Description:
This catalog contains the third major update of new optical and radio data for the strong sources in the Revised Third Cambridge Catalogue (3CR). Positions, redshifts, magnitudes, and identifications are included, as well as some radio data for 298 3CR sources.
3430. C3R2 survey: high-confidence redshifts from DR1
ID:
ivo://CDS.VizieR/J/ApJ/841/111
Title:
C3R2 survey: high-confidence redshifts from DR1
Short Name:
J/ApJ/841/111
Date:
21 Oct 2021
Publisher:
CDS
Description:
A key goal of the Stage IV dark energy experiments Euclid, LSST, and WFIRST is to measure the growth of structure with cosmic time from weak lensing analysis over large regions of the sky. Weak lensing cosmology will be challenging: in addition to highly accurate galaxy shape measurements, statistically robust and accurate photometric redshift (photo-z) estimates for billions of faint galaxies will be needed in order to reconstruct the three-dimensional matter distribution. Here we present an overview of and initial results from the Complete Calibration of the Color-Redshift Relation (C3R2) survey, which is designed specifically to calibrate the empirical galaxy color-redshift relation to the Euclid depth. These redshifts will also be important for the calibrations of LSST and WFIRST. The C3R2 survey is obtaining multiplexed observations with Keck (DEIMOS, LRIS, and MOSFIRE), the Gran Telescopio Canarias (GTC; OSIRIS), and the Very Large Telescope (VLT; FORS2 and KMOS) of a targeted sample of galaxies that are most important for the redshift calibration. We focus spectroscopic efforts on undersampled regions of galaxy color space identified in previous work in order to minimize the number of spectroscopic redshifts needed to map the color-redshift relation to the required accuracy. We present the C3R2 survey strategy and initial results, including the 1283 high-confidence redshifts obtained in the 2016A semester and released as Data Release 1.

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