- ID:
- ivo://CDS.VizieR/III/231
- Title:
- The Tycho-2 Spectral Type Catalog
- Short Name:
- III/231
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have obtained spectral types for 351,863 stars in the Tycho-2 catalog <I/259> by cross-referencing the Tycho-2 catalog against the Michigan Catalogs <III/31>, <III/51>, <III/80>, <III/133>, and <III/214>; the Catalog of Stellar Spectra Classified in the Morgan-Keenan System <III/18>; the MK Classification Extension <III/78>; the FK5 catalog parts I and II <I/149> and <I/175>; and the PPM North and South catalogs <I/146> and <I/193>.
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Search Results
- ID:
- ivo://CDS.VizieR/II/124A
- Title:
- UBV and MK types in Open Clusters, 3rd ed.
- Short Name:
- II/124A
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- See the complete documentation written by Anne C. Raugh (file adc.doc)
- ID:
- ivo://CDS.VizieR/J/A+AS/30/261
- Title:
- UBV and Radial Velocities of SMC Supergiants
- Short Name:
- J/A+AS/30/261
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- From observations at the European Southern Observatory, spectrographic and photometric data are presented for 91 supergiant stars belonging to the Small Magellanic Cloud and its Wing. The data include MK classes for 52 stars, radial velocity data for 51 stars and UBV photometry for 90 stars. In V the limiting magnitude for the spectrographic observations is 13.7 and for the photometric observations 13.9. Whenever possible, radial velocities for interstellar CaII and [OII] have been measured and listed. In Remarks to the Catalogue notes are given for the individual stars concerning the obtained data and comparisons with results of previous investigations.
- ID:
- ivo://CDS.VizieR/J/ApJS/115/271
- Title:
- UBV-beta Database for LS Stars
- Short Name:
- J/ApJS/115/271
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- (Excerpt from the "intro.txt" file) Between 1959 and 1971, the Hamburg and Warner and Swasey Observatories published a seven-volume survey listing intrinsically luminous stars (hereafter "LS" objects) - mostly OB stars, as well as a number of A, F, and G supergiants and Wolf-Rayet stars - within about ten degrees of the plane of the Milky Way to a limiting photographic magnitude of approximately 13.5. Based on objective-prism surveys of dispersion 580 Angstrom per millimeter at Hydrogen-gamma, these catalogs have served as starting points for numerous investigations of galactic structure and the characteristics of massive stars. Much fundamental data on the LS stars now exists distributed throughout the astronomical literature. This work describes a compilation of published photoelectric UBV-Beta photometry and spectral classifications nominally on the MK system for the LS stars, as well as an extensive cross-identification table linking LS numbers and other commonly-used identifiers such as HD, BD, CD, CPD and HR numbers. At this writing, the UBV-Beta portion of the database covers both the Northern and Southern LS stars, whereas MK classifications have as yet only been fully compiled for the Southern stars; compilation of MK types for the Northern LS stars is as yet incomplete, but ongoing.
- ID:
- ivo://CDS.VizieR/VI/19
- Title:
- UBV Photoelectric Sequences in SA 92-115
- Short Name:
- VI/19
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The UBV system was originally defined by ten bright standard stars, primarily in the northern sky. These stars are too bright to be used with large telescopes and cannot be reached from southern observatories. This catalog is a careful compilation of data on fainter stars in the equatorial Selected Areas. They are intended as a new set of standards which can be used to define the UBV system at fainter magnitudes in both hemispheres. The stars range in V between 6.0 and 14.9 with most between 9.0 and 13.0.
- ID:
- ivo://CDS.VizieR/J/A+A/462/683
- Title:
- Velocities in SMC field of NGC 330
- Short Name:
- J/A+A/462/683
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We search for the effects of metallicity on B and Be stars in the Small and Large Magellanic Clouds (SMC and LMC) and in the Milky Way (MW), by extending our previous analysis of B and Be star populations in the LMC to the SMC. The rotational velocities of massive stars and the evolutionary status of Be stars are examined with respect to their environments. Spectroscopic observations of hot stars belonging to the young cluster SMC-NGC 330 and its surrounding region were obtained with the VLT-GIRAFFE facilities in MEDUSA mode. We determined fundamental parameters for B and Be stars with the GIRFIT code, taking the effect of fast rotation and the age of observed clusters into account. We compared the mean vsini obtained by spectral type- and mass-selection for field and cluster B and Be stars in the SMC with the one in the LMC and MW.
- ID:
- ivo://CDS.VizieR/J/A+AS/45/193
- Title:
- Velocities in the Pup OB association area
- Short Name:
- J/A+AS/45/193
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The present investigation was undertaken to get more information about the structure and the rotation of our Galaxy in the Puppis OB association area, towards longitude l"=244{deg}. We give here new spectrophotometric and kinematic results which were obtained through the measurements of plates taken at the ESO Objective Prism Astrograph.
- ID:
- ivo://CDS.VizieR/J/A+A/574/A13
- Title:
- VFTS. B-type stars classification and RV
- Short Name:
- J/A+A/574/A13
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present spectral classifications for 438 B-type stars observed as part of the VLT-FLAMES Tarantula Survey (VFTS) in the 30 Doradus region of the Large Magellanic Cloud. Radial velocities are provided for 307 apparently single stars, and for 99 targets with radial-velocity variations which are consistent with them being spectroscopic binaries. We investigate the spatial distribution of the radial velocities across the 30 Dor region, and use the results to identify candidate runaway stars. Excluding potential runaways and members of two older clusters in the survey region (SL639 and Hodge301), we determine a systemic velocity for 30 Dor of 271.6+/-12.2km/s from 273 presumed single stars. Employing a 3{sigma} criterion we identify nine candidate runaway stars (2.9% of the single stars with radial-velocity estimates). The projected rotational velocities of the candidate runaways appear to be significantly different to those of the full B-type sample, with a strong preference for either large (>=345km/s) or small (<=65km/s) rotational velocities. Of the candidate runaways, VFTS358 (classified B0.5: V) has the largest differential radial velocity (-106.9+/-16.2km/s), and a preliminary atmospheric analysis finds a significantly enriched nitrogen abundance of 12+log(N/H)> 8.5. Combined with a large rotational velocity (v_e_sini=345+/-22km/s), this is suggestive of past binary interaction for this star.
- ID:
- ivo://CDS.VizieR/J/A+A/564/A40
- Title:
- VFTS. O-type stellar content of 30 Dor
- Short Name:
- J/A+A/564/A40
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Detailed spectral classifications are presented for 352 O-B0 stars in the VLT-FLAMES Tarantula Survey ESO Large Programme, of which 213 O-type are judged of sufficiently high quality for further morphological analysis. Among them, six subcategories of special interest are distinguished. (1) Several new examples of the earliest spectral types O2-O3 have been found, while a previously known example has been determined to belong to the nitrogen-rich ON2 class. (2) A group of extremely rapidly rotating main-sequence objects has been isolated, including the largest vsini values known, the spatial and radial-velocity distributions of which suggest ejection from the two principal ionizing clusters NGC 2070 and NGC 2060. (3) Several new examples of the evolved, rapidly rotating Onfp class show similar evidence, although at least some of them are spectroscopic binaries. (4) No fewer than 48 members of the Vz category, hypothesized to be on or near the zero-age main sequence, are found in this sample; in contrast to the rapid rotators, they are strongly concentrated to the ionizing clusters and a newly recognized region of current and recent star formation to the north, supporting their interpretation as very young objects, as do their relatively faint absolute magnitudes. (5) A surprisingly large fraction of the main-sequence spectra belong to the recently recognized V((fc)) class, with CIII emission lines of similar strength to the usual NIII in V((f)) spectra, although a comparable number of the latter are also present, as well as six objects with very high-quality data but no trace of either emission feature, presenting new challenges to physical interpretations. (6) Two mid-O Vz and three late-O giant/supergiant spectra with morphologically enhanced nitrogen lines have been detected. Absolute visual magnitudes have been derived for each star with individual extinction laws, and composite Hertzsprung-Russell diagrams provide evidence of the multiple generations present in this field. Spectroscopic binaries, resolved visual multiples, and possible associations with X-ray sources are noted. Astrophysical and dynamical analyses of this unique dataset underway will provide new insights into the evolution of massive stars and starburst clusters.
- ID:
- ivo://CDS.VizieR/J/ApJS/59/95
- Title:
- Visual multiples. VIII.
- Short Name:
- J/ApJS/59/95
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A total of 1000 new classifications are given for stars brighter than B=8.0mag in the Aitken double star catalog. The classifications supplement 865 classifications obtained in 1981 and 1984. Among the newly discovered stars are 12 new Ap stars, eight Lambda Bootis stars, one Ba II star, and 60 Am stars. A detailed list of the new classifications is given.
