2008A&A...480..785L


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST15:15:52

2008A&A...480..785L - Astronomy and Astrophysics, volume 480, 785-792 (2008/3-4)

Hipparcos distance estimates of the Ophiuchus and the Lupus cloud complexes.

LOMBARDI M., LADA C.J. and ALVES J.

Abstract (from CDS):

We combine extinction maps from the Two Micron All Sky Survey (2MASS) with Hipparcos and Tycho parallaxes to obtain reliable and high-precision estimates of the distance to the Ophiuchus and Lupus dark complexes. Our analysis, based on a rigorous maximum-likelihood approach, shows that the ρ-Ophiuchi cloud is located at (119±6)pc and the Lupus complex is located at (155±8)pc; in addition, we are able to put constraints on the thickness of the clouds and on their orientation on the sky (both these effects are not included in the error estimate quoted above). For Ophiuchus, we find some evidence that the streamers are closer to us than the core. The method applied in this paper is currently limited to nearby molecular clouds, but it will find many natural applications in the GAIA-era, when it will be possible to pin down the distance and three-dimensional structure of virtually every molecular cloud in the Galaxy.

Abstract Copyright:

Journal keyword(s): ISM: clouds - dust, extinction - ISM: individual objects: Ophiuchus complex - stars: distances - methods: data analysis

Simbad objects: 12

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Number of rows : 12

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 NAME Lupus I Cld 15 43 02.1 -34 09 06           ~ 224 0
2 NAME Lup Cloud SFR 16 03 -38.1           ~ 517 0
3 NAME ASSOC II SCO As* 16 15 -24.2           ~ 1120 1
4 Haro 1-6 Or* 16 26 03.0281201323 -24 23 36.193999164   14.15 14.01 12.38 10.80 K0 204 1
5 NAME rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 238 1
6 GSS 35 TT* 16 26 34.1750440278 -24 23 28.331873112     16.53 14.75 12.51 B3 214 1
7 NAME rho Oph B Cloud MoC 16 27 11 -24 28.5           ~ 65 1
8 WL 5 TT* 16 27 18.17064 -24 28 52.6800           ~ 88 0
9 Elia 2-36 TT* 16 27 49.8769818907 -24 25 40.237798866       13.69 12.19 A7 65 0
10 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3027 0
11 NAME Oph Cloud Complex DNe 16 30 -24.3           ~ 63 1
12 LDN 168 DNe 17 33 16.4 -20 57 55           ~ 7 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-15:15:52

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