1997A&AS..126...91T


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.07CEST21:26:49

1997A&AS..126...91T - Astron. Astrophys., Suppl. Ser., 126, 91-103 (1997/November-2)

Spectroscopic and photometric behaviour of the FU Orionis variable Z Canis Majoris.

TEODORANI M., ERRICO L., VITTONE A.A., GIOVANNELLI F. and ROSSI C.

Abstract (from CDS):

We present optical and IR photometry, optical multi-dispersion spectroscopy, and IR spectrophotometry of the FU Ori variable Z Canis Majoris, obtained in the years 1984, 1985, 1989 and 1996. A comparison of data obtained in 1984 and 1985 confirms that in 1985 Z CMa underwent a low-power eruption. The enhancement of Hα emission line, the transition of Hβ and Feii lines from pure absorption to emission with or without a P Cygni profile, the appearance of the Hei 6678Å absorption line, a radial velocity increase of about 30% of the P Cygni absorption components, and finally a 0.2-0.3mag increase of IR luminosity, were all dinstinctive characteristics of this state. Further observations in 1996 show that Z CMa is in a low-luminosity state at V=10.24 while the appearance of a double-peaked Hα emission, with the blue component much weaker than the red one, is the most significant spectroscopic variation. Energy distributions in the range 0.4-5µm, obtained during 1984 and 1985 observational runs, are also presented.

Abstract Copyright:

Journal keyword(s): stars: individual: Z CMa - stars: pre-main-sequence - stars: Be - stars: variables: other

Simbad objects: 14

goto Full paper

goto View the reference in ADS

Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* Z CMa Ae* 07 03 43.1588002461 -11 33 06.230351311 10.51 9.99 8.80     B5/8eq+F5/7 537 3
2 * bet CMi Be* 07 27 09.0417373 +08 17 21.536745 2.52 2.80 2.89 2.90 2.96 B8Ve 363 0
3 * alf Mon PM* 07 41 14.8325688 -09 33 04.071083 5.83 4.95 3.93 3.16 2.64 G9.5III-IIIbFe-0.5 187 0
4 * 30 Mon PM* 08 25 39.6320108 -03 54 23.117820 3.85 3.88 3.90 3.87 3.92 A0Va 261 0
5 * y Vel Pe* 09 38 01.4522425087 -43 11 27.365564591 7.18 6.50 5.50     G8IIIBa1.5 119 0
6 HD 88742 PM* 10 13 24.7292010413 -33 01 54.193510617 7.06 6.97 6.38     G0V 140 0
7 * p Vel SB* 10 37 18.13995 -48 13 32.2349 4.19 4.13 3.84 3.57 3.41 A3/5 118 0
8 * c Vir PM* 12 20 20.9813348 +03 18 45.260365 7.27 6.12 4.96 4.07 3.46 K0.5IIIbFe-0.5 342 0
9 * eps Cen bC* 13 39 53.25774 -53 27 59.0081 1.16 2.08 2.30 2.45 2.70 B1III 241 0
10 * 42 Lib * 15 40 16.8983538966 -23 49 05.075358909 7.80 6.29 4.96 4.00 3.32 K3-IIICN2 112 0
11 * r Her SB* 16 01 14.3106662541 +17 49 06.083083740       4.5   G8IIIb 80 0
12 * 9 Sgr Em* 18 03 52.4455370104 -24 21 38.639393923 5.08 5.97 5.97 5.72 5.70 O4V((f))z 522 0
13 HD 165185 PM* 18 06 23.7191233830 -36 01 11.229463639 6.64 6.57 5.95 5.58   G1V 152 0
14 * nu.02 Sgr PM* 18 55 07.1373990478 -22 40 16.773554156 7.80 6.30 4.98 4.04 3.38 K3-II-III:CN1Ba1 120 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 1997A&AS..126...91T and select 'bookmark this link' or equivalent in the popup menu


2021.05.07-21:26:49

© Université de Strasbourg/CNRS

    • Contact