Information on Service 'High-resolution optical spectra of HD165052 (Ferrero+, 2013) at NOVA'

Service Name: High-resolution optical spectra of HD165052 (Ferrero+, 2013) at NOVA
Description: This is a set of high-resolution high-S/N optical spectra of the massive binary star HD 165 052 (O7Vz + O7.5Vz) taken between 2008 April and 2011 May with echelle spectrographs at CASLEO (mainly), LCO and ESO. Each one covers the spectral range 3700-6000 A with a resolution varying between ~13000 and ~45000 @ 5000A according to the instrument. Originally, the spectra were secured for radial velocity measurements. More details about observations, instrument configurations and reduction process can be found in documentation section.
Contact: Gabriel Ferrero gferrero@fcaglp.unlp.edu.ar Facultad de Ciencias Astronómicas y Geofísicas - La Plata - Argentina
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Documentation: We present a new set of radial velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling high-resolution optical spectra. The longitude of the periastron (ϖ = 60 ± 2°) shows a variation with respect to previous studies. We have determined the apsidal motion rate of the system, ϖ =12.1 ± 0.3° yr-1, which was used to calculate the absolute masses of the binary components: M1 = 22.5 ± 1.0 M⊙ and M2 = 20.5 ± 0.9 M⊙. Analysing the separated spectra, we have reclassified the components as O7Vz and O7.5Vz stars. Reference: Apsidal motion in massive close binary systems - I. HD 165052, an extreme case? Authors: Ferrero, G.; Gamen, R.; Benvenuto, O.; Fernandez-Lajus, E.

Data Table Fields:

Name	Table Head	Description	Unit	UCD
accref	Product key	Access key for the data	N/A	meta.ref.url;meta.dataset
ssa_location	Location	ICRS location of aperture center	deg	pos.eq
ssa_dateObs	Date Obs.	Midpoint of exposure	d	time.epoch
ssa_timeExt	Exp. Time	Exposure duration	s	time.duration
ssa_length	Length	Number of points in the spectrum	N/A	N/A
accsize	File size	Size of the data in bytes	byte	N/A
ssa_dstitle	Title	A compact and descriptive designation of the dataset.	N/A	meta.title;meta.dataset
ssa_creatorDID	C. DID	Dataset identifier assigned by the creator	N/A	meta.id
ssa_pubDID	P. DID	Dataset identifier assigned by the publisher	N/A	N/A
ssa_cdate	Proc. Date	Processing/Creation date	N/A	time;meta.dataset
ssa_pdate	Pub. Date	Date last published.	N/A	N/A
ssa_bandpass	Bandpass	Bandpass (i.e., rough spectral location) of this dataset; this should be the most appropriate term from the values of VODataService vs:Waveband.	N/A	instr.bandpass
ssa_cversion	C. Version	Creator assigned version for this dataset (will be incremented when this particular item is changed).	N/A	meta.version;meta.dataset
ssa_targname	Object	Common name of object observed.	N/A	meta.id;src
ssa_targclass	Ob. cls	Object class (star, QSO,...; use Simbad object classification http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes if at all possible)	N/A	src.class
ssa_redshift	z	Redshift of target object	N/A	src.redshift
ssa_targetpos	Obj. pos	Equatorial (ICRS) position of the target object.	N/A	pos.eq;src
ssa_snr	SNR	Signal-to-noise ratio estimated for this dataset	N/A	stat.snr
ssa_aperture	Aperture	Angular diameter of aperture	deg	instr.fov
ssa_specmid	Mid. Band	Midpoint of region covered in this dataset	m	em.wl;instr.bandpass
ssa_specext	Bandwidth	Width of the spectrum	m	em.wl;instr.bandwidth
ssa_specstart	Band start	Lower value of spectral coordinate	m	em.wl;stat.min
ssa_specend	Band end	Upper value of spectral coordinate	m	em.wl;stat.max
ssa_dstype	Data type	Type of data (spectrum, time series, etc)	N/A	N/A
ssa_publisher	Publisher	Publisher of the datasets included here.	N/A	N/A
ssa_creator	Creator	Creator of the datasets included here.	N/A	N/A
ssa_collection	Collection	A short handle naming the collection this spectrum belongs to.	N/A	N/A
ssa_instrument	Instrument	Instrument or code used to produce these datasets	N/A	meta.id;instr
ssa_datasource	Src	Method of generation for the data (one of survey, pointed, theory, custom, artificial).	N/A	N/A
ssa_creationtype	Using	Process used to produce the data (archival, cutout, filtered, mosaic, projection, spectralExtraction, or catalogExtraction)	N/A	N/A
ssa_reference	Ref.	URL or bibcode of a publication describing this data.	N/A	N/A
ssa_fluxStatError	Err. flux	Statistical error in flux	N/A	stat.error;phot.flux.density;em
ssa_fluxSysError	Sys. Err flux	Systematic error in flux	N/A	stat.error.sys;phot.flux.density;em
ssa_fluxcalib	Calib Flux	Type of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED).	N/A	N/A
ssa_binSize	Spect. Bin	Bin size in wavelength	m	em.wl;spect.binSize
ssa_spectStatError	Err. Spect	Statistical error in wavelength	m	stat.error;em
ssa_spectSysError	Sys. Err. Spect	Systematic error in wavelength	m	stat.error.sys;em
ssa_speccalib	Calib. Spect.	Type of wavelength calibration	N/A	meta.code.qual
ssa_specres	Spec. Res.	Resolution on the spectral axis	m	spect.resolution;em.wl
mime	Type	MIME type of the file served	N/A	meta.code.mime
owner	Owner	Owner of the data	N/A	N/A
embargo	Embargo ends	Date the data will become/became public	a	N/A

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