J/MNRAS/538/1367 A census of OB stars within 1 kpc (Quintana+, 2025)
A census of OB stars within 1 kpc and the star formation and core collapse
supernova rates of the Milky Way.
Quintana A.L., Wright N.J., Martinez Garcia J.
<Mon. Not. R. Astron. Soc. 538, 1367-1383 (2025)>
=2025MNRAS.538.1367Q 2025MNRAS.538.1367Q (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Stars, OB ; Parallaxes, trigonometric ; Supernovae ;
Stars, distances ; Stellar distribution ; Stars, masses ;
Effective temperatures
Keywords: stars: early-type - stars: massive - stars: distances -
Galaxy: structure - Galaxy: solar neighbourhood
Abstract:
OB stars are crucial for our understanding of Galactic structure, star
formation, stellar feedback and multiplicity. In this paper we have
compiled a census of all OB stars within 1 kpc of the Sun. We
performed evolutionary and atmospheric model fits to observed spectral
energy distributions (SEDs) compiled from astro-photometric survey
data. We have characterized and mapped 24706 O- and B-type stars
(Teff>10000K) within 1 kpc of the Sun, whose overdensities correspond
to well-studied OB associations and massive star-forming regions such
as Sco-Cen, Orion OB1, Vela OB2, Cepheus and Circinus. We have
assessed the quality of our catalogue by comparing it with
spectroscopic samples and similar catalogues of OB(A) stars, as well
as catalogues of OB associations, star-forming regions and young open
clusters. Finally, we have also exploited our list of OB stars to
estimate their scale height (76±1pc), a local star formation rate of
2896+417-1M☉/Myr and a local core-collapse supernova rate of
∼15-30 per Myr. We extrapolate these rates to the entire Milky Way to
derive a Galactic SFR of 0.67+0.09-0.01M☉/yr and a
core-collapse supernova rate of 0.4-0.5 per century. These are
slightly lower than previous estimates, which we attribute to
improvements in our census of OB stars and changes to evolutionary
models. We calculate a near-Earth core collapse supernova rate of ∼2.5
per Gyr that supports the view that nearby supernova explosions could
have caused one or more of the recorded mass extinction events on
Earth.
Description:
Position, astrometry and SED-fitted parameters of the 24607 OB stars
within 1 kpc.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 243 24706 Catalogue of OB stars within 1 kpc
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See also:
III/135 : Henry Draper Catalogue and Extension (Cannon+ 1918-1924; ADC 1989)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- Gaia ?=0 Gaia source identifier (0 if not in Gaia)
21- 29 A9 --- HD Henry Draper Catalogue Number for sources
from the Bright Stars Catalogue
31 A1 --- Astrom [0123] Number indicating which astrometric
data was used (1)
33 A1 --- Photom [0123] Number indicating which photometric
data was used (1)
35- 46 F12.8 deg RAdeg Barycentric right ascension (ICRS) at
Ep=2016.0
48- 59 F12.8 deg DEdeg Barycentric declination (ICRS) at
Ep=2016.0
61- 72 F12.8 deg GLON Galactic longitude
74- 85 F12.8 deg GLAT Galactic latitude
87- 99 F13.8 pc X X coordinate in heliocentric Cartesian
Galactic coordinates
101-113 F13.8 pc Y Y coordinate in heliocentric Cartesian
Galactic coordinates
115-128 F14.8 pc Z Z coordinate in heliocentric Cartesian
Galactic coordinates
130-140 F11.8 mas plx Corrected parallax
142-151 F10.8 mas e_plx Corrected parallax uncertainty
153-157 F5.3 [K] logTeff Median logarithm of the SED-fitted effective
temperature (logTeffMed)
159-163 F5.3 [K] b_logTeff 16th percentile logarithm of the SED-fitted
effective temperature (logTeffP16)
165-169 F5.3 [K] B_logTeff 84th percentile logarithm of the SED-fitted
effective temperature (logTeffP84)
171-175 F5.3 [Lsun] logLum Median logarithm of the SED-fitted luminosity
(logLumMed)
177-181 F5.3 [Lsun] b_logLum 16th percentile logarithm of the SED-fitted
stellar luminosity (logLumP16)
183-187 F5.3 [Lsun] B_logLum 84th percentile logarithm of the SED-fitted
luminosity (logLumP84)
189-193 F5.3 [Msun] logMass Median logarithm of the SED-fitted stellar
mass (logMassMed)
195-199 F5.3 [Msun] b_logMass 16th percentile logarithm of the SED-fitted
stellar mass (logMassP16)
201-205 F5.3 [Msun] B_logMass 84th percentile logarithm of the SED-fitted
mass (logMassP84)
207-216 F10.8 mag AV Median extinction in the V-band
218-225 F8.3 pc Dist Median SED-fitted distance (DistMed)
227-234 F8.3 pc b_Dist 16th percentile SED-fitted distance (DistP16)
236-243 F8.3 pc B_Dist 84th percentile SED-fitted distance (DistP84)
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Note (1): Code as follows:
3 = Gaia DR3
2 = Gaia DR2
1 = Gaia DR1
0 = HIPPARCOS
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Acknowledgements:
Alexis L. Quintana, alexis.quintana(at)ua.es
(End) Patricia Vannier [CDS] 18-Mar-2025