Inici     Començant     Sobreviure a l'Univers    
Inhabited Sky
    News@Sky     Astro Fotografia     La Col·lecció     Fòrum     Blog New!     FAQ     Premsa     Login  

HD 175677 (V1665 Aql)


Contingut

Imatges

Carregar la teva Imatge

DSS Images   Other Images


Articles Relacionats

The 78th Name-List of Variable Stars
We present the next regular Name-List of variable stars containinginformation on 1706 variable stars recently designated in the system ofthe General Catalogue of Variable Stars.

New Elements for 80 Eclipsing Binaries
This research presents new elements for 80 eclipsing binaries found withthe help of the ASAS-3, Hipparcos and TASS databases.

An Einstein Observatory SAO-based catalog of B-type stars
About 4000 X-ray images obtained with the Einstein Observatory are usedto measure the 0.16-4.0 keV emission from 1545 B-type SAO stars fallingin the about 10 percent of the sky surveyed with the IPC. Seventy-fourdetected X-ray sources with B-type stars are identified, and it isestimated that no more than 15 can be misidentified. Upper limits to theX-ray emission of the remaining stars are presented. In addition tosummarizing the X-ray measurements and giving other relevant opticaldata, the present extensive catalog discusses the reduction process andanalyzes selection effects associated with both SAO catalog completenessand IPC target selection procedures. It is concluded that X-rayemission, at the level of Lx not less than 10 exp 30 ergs/s, is quitecommon in B stars of early spectral types (B0-B3), regardless ofluminosity class, but that emission, at the same level, becomes lesscommon, or nonexistent, in later B-type stars.

Photometry and spectroscopy of stars in northern H II regions
New UBV photometry of 60 candidates for the exciting stars of a sampleof optical H II regions between Galactic longitudes 30 and 70 deg ispresented, together with MK spectral types for a smaller number ofstars. These data allow the identification of 11 possible new excitingstars in 7 nebulae. A catalog of basic data on the 36 Sharpless (1959) HII regions in this longitude range has been compiled from the presentobservations and from a reanalysis of existing data and is alsopresented, with notes on individual nebulae.

Enviar un nou article


Enllaços Relacionats

  • - No s'ha trobat enllaços -
Enviar un nou enllaç


Membre dels grups següents:


Dades d'Observació i Astrometria

Constel·lació:Aquila
Ascensió Recta:18h56m09.90s
Declinació:+07°56'08.2"
Magnitud Aparent:8.112
Distancia:602.41 parsecs
Moviment propi RA:-3.1
Moviment propi Dec:-3.8
B-T magnitude:8.316
V-T magnitude:8.129

Catàlegs i designacions:
Noms PropisV1665 Aql
  (Edit)
HD 1989HD 175677
TYCHO-2 2000TYC 1039-1307-1
USNO-A2.0USNO-A2 0975-13636617
HIPHIP 92943

→ Sol·licitar més catàlegs i designacions de VizieR