2015A&A...584A.119R


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.23CET18:47:26

2015A&A...584A.119R - Astronomy and Astrophysics, volume 584A, 119-119 (2015/12-1)

A network of filaments detected by Herschel in the Serpens core. A laboratory to test simulations of low-mass star formation.

ROCCATAGLIATA V., DALE J.E., RATZKA T., TESTI L., BURKERT A., KOEPFERL C., SICILIA-AGUILAR A., EIROA C. and GACZKOWSKI B.

Abstract (from CDS):

Filaments represent a key structure during the early stages of the star formation process. Simulations show that filamentary structures commonly formed before and during the formation of cores. The Serpens core is an ideal laboratory for testing the state of the art of simulations of turbulent giant molecular clouds. We used Herschel observations of the Serpens core to compute temperature and column density maps of the region. We selected the early stages of a recent simulation of star-formation, before stellar feedback was initiated, with similar total mass and physical size as the Serpens core. We also derived temperature and column density maps from the simulations. The observed distribution of column densities of the filaments was analyzed, first including and then masking the cores. The same analysis was performed on the simulations as well. A radial network of filaments was detected in the Serpens core. The analyzed simulation shows a striking morphological resemblance to the observed structures. The column density distribution of simulated filaments without cores shows only a log-normal distribution, while the observed filaments show a power-law tail. The power-law tail becomes evident in the simulation if the focus is only the column density distribution of the cores. In contrast, the observed cores show a flat distribution. Even though the simulated and observed filaments are subjectively similar-looking, we find that they behave in very different ways. The simulated filaments are turbulence-dominated regions; the observed filaments are instead self-gravitating structures that will probably fragment into cores.

Abstract Copyright:

Journal keyword(s): evolution - ISM: general - ISM: individual objects: Serpens Main - submillimeter: ISM - ISM: structure

Nomenclature: Table 2: [RDR2015] N (Nos 1-9).

CDS comments: Ser/G3-G6 = CoKu Ser G3 to CoKu Ser G6.

Simbad objects: 26

goto Full paper

goto View the reference in ADS

Number of rows : 26

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 Barnard 213 DNe 04 20 51 +27 16.3           ~ 148 0
2 NAME Taurus Dark Cloud SFR 04 41.0 +25 52           ~ 3359 0
3 NAME Polaris Flare MoC 11 00 14.8 +86 10 52           ~ 160 1
4 V* VV Ser Ae* 18 28 47.8619658319 +00 08 39.924642619 12.99 12.63 11.80 11.01 10.24 A5Ve 226 0
5 [RDR2015] 9 FIR 18 28 51.0 +00 50 09           ~ 1 0
6 [RDR2015] 8 FIR 18 28 53.0 +01 14 06           ~ 1 0
7 HBC 668 Em* 18 29 01.2258619468 +00 29 33.113212934   16.8       M0.5: 24 0
8 NAME Serpens G3-G6 Cluster Cl* 18 29 01.5 +00 29 40           ~ 20 1
9 HBC 671 Em* 18 29 01.8367751476 +00 29 54.753564712   18.4       K0: 25 0
10 [RDR2015] 7 FIR 18 29 28.0 +01 14 06           ~ 1 0
11 [RDR2015] 6 FIR 18 29 43.0 +01 20 58           ~ 1 0
12 SH 2-68 N Y*O 18 29 48.09 +01 16 45.0           ~ 98 1
13 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 894 2
14 NAME SH 2-68 FIR 1 cor 18 29 49.63 +01 15 21.9           ~ 233 2
15 NAME Serpens Core CD Cluster Cl* 18 29 52 +01 15.4           ~ 24 0
16 [RDR2015] 5 FIR 18 29 57.0 +01 24 17           ~ 1 0
17 NAME Serpens SMM 4 cor 18 29 57.1 +01 13 15           ~ 120 0
18 [RDR2015] 1 FIR 18 30 02.0 +01 08 19           ~ 1 0
19 [RDR2015] 2 FIR 18 30 12.0 +01 13 21           ~ 1 0
20 [RDR2015] 4 FIR 18 30 13.0 +01 19 32           ~ 1 0
21 [RDR2015] 3 FIR 18 30 20.0 +01 16 31           ~ 1 0
22 LBN 028.77+03.43 HII 18 31 26.5 -02 04 22           ~ 182 2
23 NAME Aql Rift DNe 18 32 -01.0           ~ 220 1
24 LDN 583 DNe 18 33.6 +00 37           ~ 6 0
25 NAME Coronet Cluster Cl* 19 01 54 -36 57.2           ~ 80 1
26 GRS G081.70 +00.50 SFR 20 39 01.6 +42 19 38           O4.5 935 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2015A&A...584A.119R and select 'bookmark this link' or equivalent in the popup menu


2020.01.23-18:47:26

© Université de Strasbourg/CNRS

    • Contact