2022A&A...664L..13S


Query : 2022A&A...664L..13S

2022A&A...664L..13S - Astronomy and Astrophysics, volume 664, L13-13 (2022/8-1)

The Radcliffe wave as the gas spine of the Orion arm.

SWIGGUM C., ALVES J., D'ONGHIA E., BENJAMIN R.A., THULASIDHARAN L., ZUCKER C., POGGIO E., DRIMMEL R., GALLAGHER III J.S. and GOODMAN A.

Abstract (from CDS):

The Radcliffe wave is a ∼3 kpc long coherent gas structure containing most of the star-forming complexes near the Sun. In this Letter we aim to find a Galactic context for the Radcliffe wave by looking into a possible relationship between the gas structure and the Orion (local) arm. We use catalogs of massive stars and young open clusters based on Gaia Early Data Release 3 (EDR3) astrometry, in conjunction with kiloparsec-scale 3D dust maps, to investigate the Galactic XY spatial distributions of gas and young stars. We find a quasi-parallel offset between the luminous blue stars and the Radcliffe wave, in that massive stars and clusters are found essentially inside and downstream from the Radcliffe wave. We examine this offset in the context of color gradients observed in the spiral arms of external galaxies, where the interplay between density wave theory, spiral shocks, and triggered star formation has been used to interpret this particular arrangement of gas and dust as well as OB stars, and outline other potential explanations as well. We hypothesize that the Radcliffe wave constitutes the gas reservoir of the Orion (local) arm, and that it presents itself as a prime laboratory to study the interface between Galactic structure, the formation of molecular clouds in the Milky Way, and star formation.

Abstract Copyright: © C. Swiggum et al. 2022

Journal keyword(s): Galaxy: structure - solar neighborhood - Galaxy: stellar content

Simbad objects: 29

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Number of rows : 29
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 Ass Cep OB 4 As* 00 02 +67.7           ~ 79 1
2 M 74 G 01 36 41.7451236624 +15 47 01.107512304 10.52 10.00 9.46 9.16   ~ 1709 1
3 NAME Per Arm PoG 03 30 +45.0           ~ 1501 0
4 Ass Cam OB 1 As* 03 31.6 +58 38           ~ 94 0
5 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1346 0
6 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4374 0
7 Ass Aur OB 1 As* 05 22 +33.9           ~ 83 0
8 M 42 HII 05 35 17 -05 23.4           ~ 4057 0
9 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 736 2
10 Ass Gem OB 1 As* 06 09.8 +21 35           ~ 191 0
11 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4304 4
12 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2546 2
13 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 511 1
14 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1324 1
15 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14210 0
16 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1093 2
17 NAME Aql Region reg 18 31.1 -02 10           ~ 388 0
18 NAME Cygnus Molecular Cloud Cld 20 12 +36.3           ~ 60 0
19 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 828 1
20 NGC 7000 Cl* 20 58 47 +44 19.8           ~ 399 0
21 NAME Cepheus Cloud SFR 22 00.0 +76 30           ~ 143 0
22 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 656 2
23 LBN 108.88+06.09 HII 22 29 15.9 +64 51 08           ~ 14 0
24 NAME III CEP ASSOC As* 23 04.2 +63 24           ~ 320 0
25 NAME Gould Belt PoG ~ ~           ~ 861 1
26 NAME Radcliffe Wave PoG ~ ~           ~ 42 0
27 NAME Cepheus Spur As* ~ ~           ~ 9 0
28 NAME CMa Region reg ~ ~           ~ 45 0
29 NAME Ori Arm PoG ~ ~           ~ 201 0

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