1999A&AS..134..129K


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.19CEST23:03:09

1999A&AS..134..129K - Astron. Astrophys., Suppl. Ser., 134, 129-133 (1999/January-1)

Photometry and spectroscopy of the central star of the Trifid nebula.

KOHOUTEK L., MAYER P. and LORENZ R.

Abstract (from CDS):

UBV photometry of the central star of the Trifid nebula - HD 164492, which has so far been suspected of photometric as well as of radial velocity variability - is presented. The results of our photometry do not confirm any variability. Moreover, based on new high resolution CCD spectra any radial velocity variability can be discarded. Photometry of several other members of the multiple stellar system is included; according to this photometry, the system is a physical one. Equivalent widths for the main component of HD 164492 are given. Positions measured on CCD exposures are presented too.

Abstract Copyright:

Journal keyword(s): binaries: visual - stars: early-type - stars: individual: HD 164492 - ISM: Trifid nebula

Nomenclature: Table 5: [KML99] NN (Nos 1-10).

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 HD 35921 bL* 05 29 42.65002 +35 22 30.0896 6.23 6.96 6.85     O9II 227 0
2 CD-23 13804G * 18 02 21.9 -23 02 22   13.34 13.17     ~ 7 0
3 CD-23 13804F *i* 18 02 22.0 -23 02 25     13.8     ~ 7 0
4 NGC 6514 147 * 18 02 23.0574676458 -23 02 05.975931011     12.4     F3V 9 1
5 EM* LkHA 123 Em* 18 02 23.13015 -23 01 59.9462   8.72 6.80 9.37   B6V 36 0
6 HD 164492 ** 18 02 23.54916 -23 01 50.9468 6.49 7.49 6.80     O7.5Vz+A2Ia 191 0
7 HD 164492B sg* 18 02 23.7097182315 -23 01 45.157059210   8.0 12.06     A2Ia 18 0
8 M 20 OpC 18 02 42 -22 58.3           ~ 388 1

    Equat.    Gal    SGal    Ecl

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2019.10.19-23:03:09

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