J/A+A/626/A20 MONOS. I. Spectral classifications (Maiz Apellaniz+, 2019)
MONOS: Multiplicity Of Northern O-type Spectroscopic systems.
I. Project description and spectral classifications and visual multiplicity of
previously known objects.
Maiz Apellaniz, J., Trigueros Paez E., Negueruela I., Barba R.H.,
Simon-Diaz S., Lorenzo J., Sota A., Gamen R.C., Farina C., Salas J.,
Caballero J.A., Morrell N.I., Pellerin A., Alfaro E.J., Herrero A.,
Arias J.I., Marco A.
<Astron. Astrophys. 626, A20 (2019)>
=2019A&A...626A..20M 2019A&A...626A..20M (SIMBAD/NED BibCode)
ADC_Keywords: Positional data ; Binaries, eclipsing ; Binaries, spectroscopic ;
Spectroscopy ; Stars, O ; Surveys
Keywords: stars: kinematics and dynamics - stars: early-type - binaries: general
Abstract:
Multiplicity in massive stars is a key element to understand the
chemical and dynamical evolution of galaxies. Among massive stars,
those of O type play a crucial role due to their high masses and short
lifetimes.
MONOS (Multiplicity Of Northern O-type Spectroscopic systems) is a
project designed to collect information and study O-type spectroscopic
binaries with δ>20°. In this first paper we describe the
sample and provide spectral classifications and additional information
for objects with previous spectroscopic and/or eclipsing binary
orbits. In future papers we will test the validity of previous
solutions and calculate new spectroscopic orbits.
The spectra in this paper have two sources: the Galactic O-Star
Spectroscopic Survey (GOSSS), a project that is obtaining blue-violet
R∼2500 spectroscopy of thousands of massive stars, and LiLiMaRlin, a
library of libraries of high-resolution spectroscopy of massive stars
obtained from four different surveys (CAFE-BEANS, OWN, IACOB, and
NoMaDS) and additional data from our own observing programs and public
archives. We also use lucky images obtained with AstraLux.
We present homogeneous spectral classifications for 92 O-type
spectroscopic multiple systems and ten optical companions, many of
them original.We discuss the visual multiplicity of each system with
the support of AstraLux images and additional sources. For eleven
O-type objects and for six B-type objects we present their first GOSSS
spectral classifications. For two known eclipsing binaries we detect
double absorption lines (SB2) or a single moving line (SB1) for the
first time, to which we add a third system already reported by us
recently. For two previous SB1 systems we detect their SB2 nature for
the first time and give their first separate spectral classifications,
something we also do for a third object just recently identified as a
SB2. We also detect nine new astrometric companions and provide
updated information on several others. We emphasize the results for
two stars: for σ Ori AaAbB we provide spectral classifications
for the three components with a single observation for the first time
thanks to a lucky spectroscopy observation obtained close to the Aa,Ab
periastron and for θ1 Ori CaCb we add it to the class of
Galactic Of?p stars, raising the number of its members to six. Our
sample of O-type spectroscopic binaries contains more triple- or
higher-order systems than double systems.
Description:
File tablea2.dat gives the coordinates and spectral classifications
for 92 O-type spectroscopic multiple systems and ten optical
companions.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea2.dat 181 102 Coordinates and spectral classifications
refs.dat 69 29 References
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See also:
III/274 : Galactic O-Star Spectroscopic Survey (GOSSS) (Sota+, 2014)
Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Object name
18- 32 A15 --- ID GOS ID of the star or main component
34- 35 I2 h RAh Right Ascension (J2000)
37- 38 I2 min RAm Right Ascension (J2000)
40- 45 F6.3 s RAs Right Ascension (J2000)
47 A1 --- DE- Declination sign (J2000)
48- 49 I2 deg DEd Declination (J2000)
51- 52 I2 arcmin DEm Declination (J2000)
54- 58 F5.2 arcsec DEs Declination (J2000)
60- 69 A10 --- SBS Spectroscopic binarity status
71- 76 A6 --- STGOSSS GOSSS spectral type
78- 83 A6 --- LCGOSSS GOSSS luminosity class
85- 94 A10 --- qualGOSSS GOSSS qualifier
96-120 A25 --- secGOSSS GOSSS secondary (+tertiary) spectral type
122-125 A4 --- refGOSSS GOSSS reference code
127-132 A6 --- STalt Alternate spectral type
134-139 A6 --- LCalt Alternate luminosity class
141-150 A10 --- qualalt Alternate qualifier
152-176 A25 --- secalt Alternate secondary (+tertiary) spectral type
178-181 A4 --- refalt Alternate reference code
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Ref Reference code
7- 25 A19 --- BibCode BibCode
27- 47 A21 --- Aut Author's name
49- 69 A21 --- Com Comments
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Acknowledgements:
Jesus Maiz Apellaniz, jmaiz(at)cab.inta-csic.es
(End) Patricia Vannier [CDS] 03-May-2019