2012A&A...537A..59N

Query : 2012A&A...537A..59N

2012A&A...537A..59N - Astronomy and Astrophysics, volume 537A59-59 (2012/1-1)

Properties and nature of Be stars. 29. Orbital and long-term spectral variations of γ Cassiopeiae.

NEMRAVOVA J., HARMANEC P., KOUBSKY P., MIROSHNICHENKO A., YANG S., SLECHTA M., BUIL C., KORCAKOVA D. and VOTRUBA V.

Abstract (from CDS):

A detailed analysis of more than 800 electronic high-resolution spectra of gamma Cas, which were obtained during a time interval of over 6000 days (16.84 yr) at several observatories, documents the smooth variations in the density and/or extent of its circumstellar envelope. We found a clear anticorrelation between the peak intensity and FWHM of the Hα emission, which seems to agree with recent models of such emission lines. The main result of this study is a confirmation of the binary nature of the object, determination of a reliable linear ephemeris Tmin.RV=HJD(2452081.9±0.6)+(203.52d±0.08)dxE, and a rather definitive set of orbital elements. We clearly demonstrated that the orbit is circular within the limits of accuracy of our measurements and has a semi-amplitude of radial-velocity curve of 4.30±0.09km/s. No trace of the low-mass secondary was found. The time distribution of our spectra does not allow a reliable investigation of rapid spectral variations, which are undoubtedly present in the spectra. We postpone this investigation for a future study, based on series of dedicated whole-night spectral observations.

Abstract Copyright: ∼

Journal keyword(s): binaries: spectroscopic - stars: early-type - stars: emission-line, Be

VizieR on-line data: <Available at CDS (J/A+A/537/A59): table2.dat table3.dat>

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * gam Cas HXB 00 56 42.5310945 +60 43 00.264089 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1253 0

Query : 2012A&A...537A..59N

Basic data :
* gam Cas -- High Mass X-ray Binary
Other object types: otypes_help 		Be* (), * (2013ApJS,*,...), X (2022MNRAS,3A,...), ** (**,ADS,...), IR (IRAS,IRC,...), HXB (2022A&A), Em* (EM*,[KW97]), V* (V*,AAVSO), UV (EUVE,TD1), gam (INTREF), NIR (2MASS), MIR (WISE)
ICRS coord. (ep=J2000) : 		00 56 42.5310945 +60 43 00.264089 (Optical) [ 0.07 0.07 90 ] A 2007A&A...474..653V
FK4 coord. (ep=B1950 eq=1950) : 		00 53 40.3457151 +60 26 47.405192 [ 0.07 0.07 90 ]
Gal coord. (ep=J2000) : 		123.5768760058 -02.1484067521 [ 0.07 0.07 90 ]
Proper motions mas/yr : 		25.17 -3.92 [0.08 0.08 90] A 2007A&A...474..653V
Radial velocity / Redshift / cz : 		V(km/s) -6.8 [0.9] / z(~) -0.000023 [0.000003] / cz -6.80 [0.90]
   E 1953GCRV..C......0W
Parallaxes (mas): 		5.94 [0.12] A 2007A&A...474..653V
Spectral type: 		B0.5IVpe C 1957ApJ...125..622O
Fluxes (9) :
U 1.18 [~] C 2002yCat.2237....0D
B 2.29 [~] C 2002yCat.2237....0D
V 2.39 [~] C 2002yCat.2237....0D
R 2.32 [~] C 2002yCat.2237....0D
G 2.064583 [0.006459] C 2022yCat.1355....0G
I 2.40 [~] C 2002yCat.2237....0D
J 2.039 [0.238] D 2003yCat.2246....0C
H 1.993 [0.182] D 2003yCat.2246....0C
K 1.756 [0.230] D 2003yCat.2246....0C
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Identifiers (73) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* gam Cas 1H 0053+604 PMC 90-93 23 VDB 5
* 27 Cas HD 5394 PMSC 00507+6010A WDS J00567+6043A
** BU 1028A HIC 4427 PPM 12597 WEB 791
3A 0053+604 HIP 4427 RAFGL 133 1WGA J0056.7+6042
ADS 782 A HR 264 1RXS J005642.0+604300 WISE J005642.67+604300.3
AG+60 106 INTREF 57 2S 0053+604 4XMM J005642.4+604300
ALS 6407 IRAS 00536+6026 SAO 11482 1XRS 00537+604
AT 0037+611 IRC +60031 SKY# 1444 [BM83] X0053+604
BD+59 144 JP11 439 SRGA J005642.5+604302 [FS2003] 0031
BSD 8-901 LS I +60 133 SWIFT J0056.7+6043 [HFE83] 40
CCDM J00567+6043A 1M 0050+592 SWIFT J0056.5+6042 [JE82] 20
CSI+59 144 1 1M 0050+60 TD1 521 [KRL2007b] 9
EM* MWC 9 2MASS J00564251+6043002 TIC 51962733 [KW97] 4-31
1ES 0053+60.4 MCW 46 TYC 4017-2319-1 AAVSO 0050+60
EUVE J0056+60.7 N30 187 4U 0054+60 Gaia DR2 426558460877467776
FK5 32 NAME-IAU Tiansi UBV 833 Gaia DR3 426558460884582016
GC 1117 PBC J0056.5+6043 UCAC4 754-011026
GCRV 526 PLX 185 uvby98 100005394 A
GEN# +1.00005394 PLX 185.00 V* gam Cas

References (1253 between 1850 and 2026) (Total 1253)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 10    Distance : 2    Var : 1    Rot : 6    Fe/H : 2    Plx : 3    PM : 4    SpT : 16   

   

Observing logs
ISO : 10    IUE : 162    XMM : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : * gam Cas

Link by name to the catalogue in VizieR :

AG+60 106 ALS 6407 BD+59 144 CCDM J00567+6043A EUVE J0056+60.7
FK5 32 HD 5394 HIC 4427 HIP 4427 HR 264
IRAS 00536+6026 IRC +60031 LS I +60 133 2MASS J00564251+6043002 PLX 185
PPM 12597 RAFGL 133 1RXS J005642.0+604300 SAO 11482 TD1 521
TYC 4017-2319-1 UCAC4 754-011026 uvby98 100005394 A V* gam Cas VDB 5
WDS J00567+6043A WISE J005642.67+604300.3 Gaia DR2 426558460877467776 Gaia DR3 426558460884582016

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