2016A&A...589A..80H


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.11CEST21:29:08

2016A&A...589A..80H - Astronomy and Astrophysics, volume 589A, 80-80 (2016/5-1)

APOGEE strings: A fossil record of the gas kinematic structure.

HACAR A., ALVES J., FORBRICH J., MEINGAST S., KUBIAK K. and GROSSSCHEDL J.

Abstract (from CDS):

We compare APOGEE radial velocities (RVs) of young stars in the Orion A cloud with CO line gas emission and find a correlation between the two at large scales in agreement with previous studies. However, at smaller scales we find evidence for the presence of a substructure in the stellar velocity field. Using a friends-of-friends approach we identify 37 stellar groups with almost identical RVs. These groups are not randomly distributed, but form elongated chains or strings of stars with five or more members with low velocity dispersion across lengths of 1-1.5pc. The similarity between the kinematic properties of the APOGEE strings and the internal velocity field of the chains of dense cores and fibers recently identified in the dense interstellar medium is striking and suggests that for most of the Orion A cloud, young stars keep memory of the parental gas substructure where they originated.

Abstract Copyright: © ESO, 2016

Journal keyword(s): stars: formation - stars: kinematics and dynamics - ISM: kinematics and dynamics

VizieR on-line data: <Available at CDS (J/A+A/589/A80): tablea1.dat tablea2.dat>

Status at CDS:   All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 15

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Number of rows : 15

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 1333 OpC 03 29 11 +31 18.6           ~ 1221 1
2 LDN 1495 DNe 04 18.1 +27 37           ~ 294 1
3 Barnard 213 DNe 04 20 51 +27 16.3           ~ 156 0
4 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3503 0
5 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 1988 1
6 NGC 1981 OpC 05 35 09 -04 25.9     4.2     ~ 71 0
7 NGC 1977 SFR 05 35 16.0 -04 49 15           ~ 185 0
8 NGC 1980 OpC 05 35 24 -05 54.9     2.5     ~ 86 0
9 NAME OMC-2/3 reg 05 35 33.0 -05 00 32           ~ 55 0
10 NAME LDN 1641N Cluster Cl* 05 36 19 -06 22.2           ~ 6 0
11 NAME V 380 Ori Cluster Cl* 05 36 27 -06 44.8           ~ 4 0
12 NAME Ori A MoC 05 38 -07.1           ~ 2680 0
13 NAME LDN 1641C Cluster Cl* 05 38 49.6 -07 01 32           ~ 4 0
14 LDN 1641 MoC 05 39.0 -07 00           ~ 427 0
15 NAME LDN 1641S Cluster Cl* 05 42 29 -08 06.8           ~ 4 0

    Equat.    Gal    SGal    Ecl

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2020.08.11-21:29:08

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