SKY-MAP.ORG

Evrende yaþayabilmek için

Gökyüzü görüntüsü

HD 90677

Ýçindekiler

Görüntüler
Ýlgili Makaleler
Ýlgili Baðlantýlar
Gruplar

Görüntüler

Resim Yükleyin

DSS Images Other Images

Ýlgili Makaleler

New periodic variables from the Hipparcos epoch photometry Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.
Longterm Photometry of Variables at ESO - Part Two - the Second Data Catalogue 1986-1990 Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1993A&AS..102...79S&db_key=AST
Long-term photometry of variables at ESO. I - The first data catalogue (1982-1986) This paper presents the catalog of photometric data in the Stromgrensystem obtained during the first four years (October 1982 - September1986) of the Long-Term Photometry of Variables (LTPV) program at ESO.The data are available in computer-readable form.
Walraven photometry of nearby southern OB associations Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.
Large and Kinematically Unbiased Samples of G- and K-Type Stars. III. Evolved Young Disk Stars in the Bright Star Sample Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1989PASP..101...54E&db_key=AST
Large and kinematically unbiased samples of G- and K-type stars. II - Observations of evolved stars in the Bright Star sample. III - Evolved young disk stars in the Bright Star sample Four color and RI observations were obtained for a large sample ofG-type and K-type stars in the Bright Star Catalogue. Data are firstpresented for 110 evolved stars. Photometry of evolved young diskpopulation stars have then been calibrated for luminosity, reddening,and metallicity on the basis of results for members of the Hyades andSirius superclusters. New DDO results are given for 120 stars.
Radial velocities of southern stars obtained with the photoelectric scanner CORAVEL. III - 790 late-type bright stars Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1985A&AS...59...15A&db_key=AST

Yeni bir Makale Öner

Ýlgili Baðlantýlar

- Baðlantý Bulunamadý -

Yeni Bir Baðlantý Öner

sonraki gruplarýn üyesi:

Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Yelken
Sað Açýklýk:	10^h26^m49.00^s
Yükselim:	-54Â°52'39.0"
Görünürdeki Parlaklýk:	5.58
Uzaklýk:	490.196 parsek
özdevim Sað Açýklýk:	-12.8
özdevim Yükselim:	4.6
B-T magnitude:	7.597
V-T magnitude:	5.733

Kataloglar ve belirtme:

Özgün isimleri	(Edit)
HD 1989	HD 90677
TYCHO-2 2000	TYC 8605-2450-1
USNO-A2.0	USNO-A2 0300-09650861
BSC 1991	HR 4107
HIP	HIP 51140

→ VizieR 'den daha fazla katalog ve tanýmlama isteyin