J/MNRAS/504/2968 The Alma catalogue of OB stars - II. (Pantaleoni+, 2021)
The Alma catalogue of OB stars.
II. A cross-match with Gaia DR2 and an updated map of the solar neighbourhood.
Pantaleoni Gonzalez M., Maiz Apellaniz J., Barba R.H., Reed B.C.
<Mon. Not. R. Astron. Soc., 504, 2968-2982 (2021)>
=2021MNRAS.504.2968P 2021MNRAS.504.2968P (SIMBAD/NED BibCode)
ADC_Keywords: Stars, OB ; Milky Way ; Spectra, millimetric/submm ; Photometry ;
Optical ; Magnitudes, absolute ; Parallaxes, trigonometric ;
Proper motions
Keywords: stars: massive - catalogues - astrometry -
(Galaxy:) solar neighbourhood - Galaxy: structure
Abstract:
We cross-match the Alma catalogue of OB stars with Gaia DR2 astrometry
and photometry as a first step towards producing a clean sample of
massive stars in the solar neighbourhood with a high degree of
completeness. We analyse the resulting colour-absolute magnitude
diagram to divide our sample into categories and compare extinction
estimates from two sources, finding problems with both of them. The
distances obtained with three different priors are found to have few
differences among them, indicating that Gaia DR2 distances are robust.
An analysis of the 3D distribution of massive stars in the solar
neighbourhood is presented. We show that a kinematically distinct
structure we dub the Cepheus spur extends from the Orion-Cygnus spiral
arm towards the Perseus arm and is located above the Galactic
mid-plane, likely being related to the recently discovered Radcliffe
wave. We propose that this corrugation pattern in the Galactic disc
may be responsible for the recent enhanced star formation at its
crests and troughs. We also discuss our plans to extend this work in
the immediate future.
Description:
In order to clean and update the previous catalogue presented in the
paper I (Reed et al. 2003AJ....125.2531R 2003AJ....125.2531R), we cross matched it with
Gaia DR2 (Cat. I/345) and apply selection criteria on distances, proper
motion, parallaxes and magnitudes. It permits us to build the new
version of the catalogue with a strong confidence including
sub-classifications in 5 differents categories of OB stars such as
likely massive stars (M), high/intermediate-mass stars (I),
intermediate/low-mass stars (L), high-gravity stars (H) and
extragalactic stars (E) (see section 2.1).
The results of the cleaning and classification process are presented in
the form of a main catalogue in tablea1.dat lists our final sample of
15 662 objects and three supplements tablea2-4.dat lists respectively the
2427 stars excluded due to bad astrometry or colours, the 211
unmatched objects, and the 393 duplicates.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablea1.dat 840 15662 The main catalogue lists our final sample
of 15 662 stars
tablea2.dat 784 2427 List of the 2427 stars excluded due to bad
astrometry or colours
tablea3.dat 253 211 List of the 211 unmatched objects
tablea4.dat 169 393 List of the 393 duplicates objects
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See also:
V/125 : Photometry and Spectroscopy for Luminous Stars (Reed 2005)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/349 : StarHorse, Gaia DR2 photo-astrometric distances (Anders+, 2019)
I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)
V/116 : Galactic O star catalog (Maiz-apellaniz+, 2004)
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Cat Stars category (M/I/L/H/E) (Cat) (G1)
6- 10 I5 --- ALS Alma Luminous Star number (ID_ALS) (G5)
12- 30 I19 --- GaiaDR2 Gaia DR2 source identifier (ID_DR2)
33- 47 A15 --- GOSC Galactic O-Star Catalogue identifier
(ID_GOSC) (G4)
50- 51 I2 h RAh Right ascension from original ALS catalogue
(J2000) (RAh_ALS)
53- 54 I2 min RAm Right ascension from original ALS catalogue
(J2000) (RAm_ALS)
56- 59 F4.1 s RAs Right ascension from original ALS catalogue
(J2000) (RAs_ALS)
62 A1 --- DE- Sign of declination (J2000)
63- 64 I2 deg DEd Declination from original ALS catalogue
(J2000) (DECd_ALS)
66- 67 I2 arcmin DEm Declination from original ALS catalogue
(J2000) (DECm_ALS)
69- 72 F4.1 arcsec DEs Declination from original ALS catalogue
(J2000) (DECs_ALS)
75- 76 I2 h RAGh Right ascension (ICRS) at Ep=2015.5
from Gaia DR2 (RAh_DR2)
78- 79 I2 min RAGm Right ascension (ICRS) at Ep=2015.5
from Gaia DR2 (RAm_DR2)
81- 86 F6.3 s RAGs Right ascension (ICRS) at Ep=2015.5
from Gaia DR2 (RAs_DR2)
89 A1 --- DEG- Sign of declination (ICRS) at Ep=2015.5
90- 91 I2 deg DEGd Declination (ICRS) at Ep=2015.5
from Gaia DR2 (DECd_DR2)
93- 94 I2 arcmin DEGm Declination (ICRS) at Ep=2015.5
from Gaia DR2 (DECm_DR2)
96-101 F6.3 arcsec DEGs Declination (ICRS) at Ep=2015.5
from Gaia DR2 (DECs_DR2)
104-112 F9.5 deg GLON Galactic longitude (GLON)
115-124 F10.6 deg GLAT Galactic latitude (GLAT)
127-130 F4.1 mag Vmag ? V magnitude from original ALS
catalogue (Vmag)
134-140 F7.4 mag Gmag G magnitude in Gaia DR2 (Gmag)
144-150 F7.4 mag Gmagcor G' Corrected G magnitude (Gmag_cor)
154-160 F7.4 mag BPmag GBP magnitude in Gaia DR2 (BPmag)
164-170 F7.4 mag RPmag GRP magnitude in Gaia DR2 (RPmag)
176-182 F7.4 mag GMAG Gabs from the mode of the posterior
as a distance estimate (Gabs_mode)
192-198 F7.4 mag e_GMAG Gabs uncertainty from the highest
density interval for p = 68 per cent
(Gabsmodeerr)
203-209 F7.4 mag GMAGP50 Gabs from the median of the posterior
as a distance estimate (Gabs_P50)
219-224 F6.4 mag e_GMAGP50 Mean error of GabsP50mag (GabsP50_err)
234-240 F7.4 mag BP-Gcor GBP - G' colour (BPmag-Gmag_cor)
250-256 F7.4 mag Gcor-RP G' - GRP colour (Gmag_cor-RPmag)
261-266 F6.4 mag CCDIST dcc, distance to the Gaia DR2
colour-colour main locus (CCDIST)
269-276 F8.3 mas/yr pmRA Proper motion in right ascension
in Gaia DR2 (PM_RA)
283-287 F5.3 mas/yr e_pmRA Mean error of pmRA (PMRAerr)
290-297 F8.3 mas/yr pmDE Proper motion in declination
in Gaia DR2 (PM_DEC)
305-309 F5.3 mas/yr e_pmDE Men error of pmDE (PMDECerr)
312-318 F7.3 mas plx Parallax in Gaia DR2 (Plx)
323-327 F5.3 mas e_plx Mean error of plx (Plx_err)
330-338 F9.2 arcsec Sep Separation between ALS and
Gaia DR2 positions (Sep_astr)
342-347 F6.4 --- RUWE Renormalized Unit Weight Error
in Gaia DR2 (RUWE)
357-363 F7.1 pc DistMode ALS2 mode of the posterior distribution
of distances (ALS2distmode)
372-378 F7.1 pc DistP50 ALS2 dOB, median of the posterior
distribution of distances (ALS2distP50)
388-394 F7.1 pc DistMean ALS2 mean of the posterior distribution
of distances (ALS2distmean)
404-410 F7.1 pc DistHDIl ALS2 lower limit of the highest density
interval for p=68 per cent (ALS2distHDIl)
420-426 F7.1 pc DistHDIh ALS2 lower limit of the highest density
interval for p=68 per cent (ALS2distHDIh)
435-441 F7.1 pc DistP16 ALS2 16th percentile of the posterior
distribution of distances (ALS2distP16)
450-456 F7.1 pc DistP84 ALS2 84th percentile of the posterior
distribution of distances (ALS2distP84)
461-465 I5 pc DistBJ Bailer-Jones distance estimate (BJ_dist)
474-478 I5 pc b_DistBJ Bailer-Jones lower distance estimate
(BJdistl)
488-492 I5 pc B_DistBJ Bailer-Jones upper distance estimate
(BJdisth)
497-501 I5 pc DistSH ? StarHorse distance estimate (SH_dist)
511-514 I4 pc b_DistSH ? StarHorse lower distance estimate
(SHdistl)
524-528 I5 pc B_DistSH ? StarHorse upper distance estimate
(SHdisth)
531-597 A67 --- SpType Spectral classifications from original
ALS catalogue (SpT_ALS)
599 A1 --- Sflag Simbad cross-match flag (N/S/W) (Sflag)
Signitifation des flags N/S/W Note (G2)
606 A1 --- Pflag V magnitude type from original
ALS catalogue (N/P/V) (Pflag)
Signitifation des flags N/P/V Note (G3)
609-648 A40 --- ONames Other IDs of Gaia DR2 cross-match
candidates (Other_crossmatch)
651-840 A190 --- Comments Notes (Comments)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Cat Stars category (M/I/L/H/E) (Cat) (G1)
6- 10 I5 --- ALS Alma Luminous Star number (ID_ALS) (G5)
12- 30 I19 --- GaiaDR2 Gaia DR2 source identifier (ID_DR2)
33- 47 A15 --- GOSC Galactic O-Star Catalogue identifier
(ID_GOSC) (G4)
50- 51 I2 h RAh Right ascension from original ALS catalogue
(J2000) (RAh_ALS)
53- 54 I2 min RAm Right ascension from original ALS catalogue
(J2000) (RAm_ALS)
56- 59 F4.1 s RAs Right ascension from original ALS catalogue
(J2000) (RAs_ALS)
62 A1 --- DE- Sign of declination (J2000)
63- 64 I2 deg DEd Declination from original ALS catalogue
(J2000) (DECd_ALS)
66- 67 I2 arcmin DEm Declination from original ALS catalogue
(J2000) (DECm_ALS)
69- 72 F4.1 arcsec DEs Declination from original ALS catalogue
(J2000) (DECs_ALS)
75- 76 I2 h RAGh Right ascension (ICRS) at Ep=2015.5
from Gaia DR2 (RAh_DR2)
78- 79 I2 min RAGm Right ascension (ICRS) at Ep=2015.5
from Gaia DR2 (RAm_DR2)
81- 86 F6.3 s RAGs Right ascension (ICRS) at Ep=2015.5
from Gaia DR2 (RAs_DR2)
89 A1 --- DEG- Sign of declination (ICRS) at Ep=2015.5
90- 91 I2 deg DEGd Declination (ICRS) at Ep=2015.5
from Gaia DR2 (DECd_DR2)
93- 94 I2 arcmin DEGm Declination (ICRS) at Ep=2015.5
from Gaia DR2 (DECm_DR2)
96-101 F6.3 arcsec DEGs Declination (ICRS) at Ep=2015.5
from Gaia DR2 (DECs_DR2)
104-112 F9.5 deg GLON Galactic longitude (GLON)
115-124 F10.6 deg GLAT Galactic latitude (GLAT)
127-130 F4.1 mag Vmag ? V magnitude from original
ALS catalogue (Vmag)
134-140 F7.4 mag Gmag G magnitude in Gaia DR2 (Gmag)
144-150 F7.4 mag Gmagcor G' Corrected G magnitude (Gmag_cor)
154-160 F7.4 mag BPmag ? GBP magnitude in Gaia DR2 (BPmag)
164-170 F7.4 mag RPmag ? GRP magnitude in Gaia DR2 (RPmag)
175-182 F8.4 mag GMAG ? Gabs from the mode of the posterior
as a distance estimate (Gabs_mode)
191-198 F8.4 mag e_GMAG ? Gabs uncertainty from the highest density
interval for p = 68 per cent
(Gabsmodeerr)
202-209 F8.4 mag GMAGP50 ? Gabs from the median of the posterior
as a distance estimate (Gabs_P50)
218-224 F7.4 mag e_GMAGP50 ? Mean error of GabsP50mag (GabsP50_err)
234-240 F7.4 mag BP-Gcor ? GBP - G' colour (BPmag-Gmag_cor)
250-256 F7.4 mag Gcor-RP ? G' - GRP colour (Gmag_cor-RPmag)
261-266 F6.4 mag CCDIST ? dcc, distance to the Gaia DR2
colour-colour main locus (CCDIST)
269-276 F8.3 mas/yr pmRA ? Proper motion in right ascension
in Gaia DR2 (PM_RA)
283-287 F5.3 mas/yr e_pmRA ? Mean error of pmRA (PMRAerr)
290-297 F8.3 mas/yr pmDE ? Proper motion in declination
in Gaia DR2 (PM_DEC)
305-309 F5.3 mas/yr e_pmDE ? Mean error of pmDE (PMDECerr)
312-318 F7.3 mas plx ? Parallax in Gaia DR2 (Plx)
323-327 F5.3 mas e_plx ? Mean error of plx (Plx_err)
330-338 F9.2 arcsec Sep Separation between ALS and Gaia DR2
positions (Sep_astr)
340-346 F7.4 --- RUWE ? Renormalized Unit Weight Error
in Gaia DR2 (RUWE)
356-362 F7.1 pc DistMode ? ALS2 mode of the posterior distribution
of distances (ALS2distmode)
371-377 F7.1 pc DistP50 ? ALS2 dOB, median of the posterior
distribution of distances (ALS2distP50)
387-393 F7.1 pc DistMean ? ALS2 mean of the posterior distribution
of distances (ALS2distmean)
403-409 F7.1 pc DistHDIl ? ALS2 lower limit of the highest density
interval for p=68 per cent (ALS2distHDIl)
419-425 F7.1 pc DistHDIh ? ALS2 lower limit of the highest density
interval for p=68 per cent (ALS2distHDIh)
434-440 F7.1 pc DistP16 ? ALS2 16th percentile of the posterior
distribution of distances (ALS2distP16)
449-455 F7.1 pc DistP84 ? ALS2 84th percentile of the posterior
distribution of distances (ALS2distP84)
460-464 I5 pc DistBJ ? Bailer-Jones distance estimate (BJ_dist)
473-477 I5 pc b_DistBJ ? Bailer-Jones lower distance estimate
(BJdistl)
487-491 I5 pc B_DistBJ ? Bailer-Jones upper distance estimate
(BJdisth)
496-500 I5 pc DistSH ? StarHorse distance estimate (SH_dist)
509-513 I5 pc b_DistSH ? StarHorse lower distance estimate
(SHdistl)
523-527 I5 pc B_DistSH ? StarHorse upper distance estimate
(SHdisth)
530-597 A68 --- SpType Spectral classifications from original
ALS catalogue (SpT_ALS)
601 A1 --- Sflag Simbad cross-match flag (N/S/W) (Sflag)
(G2)
608 A1 --- Pflag V magnitude type from original
ALS catalogue (N/P/V) (Pflag) (G3)
610-649 A40 --- ONames Other IDs of Gaia DR2 cross-match
candidates (Other_crossmatch)
652-784 A133 --- Comments Notes (Comments)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- ALS Alma Luminous Star number (ID_ALS) (G5)
7- 8 I2 h RAh Right ascension from original
ALS catalogue (J2000) (RAh_ALS)
10- 11 I2 min RAm Right ascension from original
ALS catalogue (J2000) (RAm_ALS)
13- 16 F4.1 s RAs Right ascension from original
ALS catalogue (J2000) (RAs_ALS)
18 A1 --- DE- Sign of declination (J2000)
19- 20 I2 deg DEd Declination from original
ALS catalogue (J2000) (DECd_ALS)
22- 23 I2 arcmin DEm Declination from original
ALS catalogue (J2000) (DECm_ALS)
25- 28 F4.1 arcsec DEs Declination from original
ALS catalogue (J2000) (DECs_ALS)
30- 38 F9.5 deg GLON Galactic longitude (GLON)
40- 49 F10.6 deg GLAT Galactic latitude (GLAT)
51- 54 F4.1 mag Vmag ? V magnitude from original
ALS catalogue (Vmag)
61 A1 --- Pflag V magnitude type from original
ALS catalogue (N/P/V) (Pflag) (G3)
63-108 A46 --- SpType Spectral classifications from original
ALS catalogue (SpT_ALS)
110-170 A61 --- ONames Other IDs of Gaia DR2 cross-match
candidates (Other_crossmatch)
172-253 A82 --- Comments Notes (Comments)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 I5 --- ALS Alma Luminous Star number (ID_ALS) (G5)
7- 8 I2 h RAh Right ascension from original
ALS catalogue (J2000) (RAh_ALS)
10- 11 I2 min RAm Right ascension from original
ALS catalogue (J2000) (RAm_ALS)
13- 16 F4.1 s RAs Right ascension from original
ALS catalogue (J2000) (RAs_ALS)
18 A1 --- DE- Sign of declination (J2000)
19- 20 I2 deg DEd Declination from original
ALS catalogue (J2000) (DECd_ALS)
22- 23 I2 arcmin DEm Declination from original
ALS catalogue (J2000) (DECm_ALS)
25- 28 F4.1 arcsec DEs Declination from original
ALS catalogue (J2000) (DECs_ALS)
30- 38 F9.5 deg GLON Galactic longitude (GLON)
40- 49 F10.6 deg GLAT Galactic latitude (GLAT)
51- 54 F4.1 mag Vmag ? V magnitude from original
ALS catalogue (Vmag)
56- 70 A15 --- SpType Spectral classifications from original
ALS catalogue (SpT_ALS)
72 A1 --- Cflag [G N] flag, nt explained in the paper (Cflag)
74 A1 --- Pflag V magnitude type from original
ALS catalogue (N/P/V) (Pflag) (G3)
76- 77 A2 --- Dflag [DA D DS] Duplicate flag (Dflag) (1)
79- 83 I5 --- DupID The Alma Luminous Star duplicate
number (ID_DUP)
85-169 A85 --- Comments Notes (Comments)
--------------------------------------------------------------------------------
Note (1): Duplicate flag as follows:
DA = flagged as other SpType than OB in the ALS catalogue itself
D = additional duplicates found by us in this work
DS = matched by the CDS on Simbad's set of identifiers
--------------------------------------------------------------------------------
Global notes:
Note (G1): Flag as follows:
M = likely massive stars
I = high/intermediate-mass stars
L = intermediate/low-mass stars
H = high-gravity stars
E = extragalactic stars
Note (G2): Simbad cross-match flag as follows:
N = not perform a match at all
S = Simbad successfully matches the ALS identifier with the correct
Gaia DR2 identifier
W = the Simbad match is different from ours
Note (G3): V magnitude ALS flag as follows:
N = original ALS lacked photometry
P = Magnitude obtained from photographic plate
V = magnitude retrieved from photoelectric measurements
Note (G4): IDs from catalogue Maiz-apellaniz et al. 2004ApJS..151..103M 2004ApJS..151..103M,
Cat. V/116
Note (G5): IDs from catalogue Reed 2003AJ....125.2531R 2003AJ....125.2531R, Cat. V/125
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History:
From electronic version of the journal
(End) Luc Trabelsi [CDS] 02-May-2024