2017ApJ...835....3L


Query : 2017ApJ...835....3L

2017ApJ...835....3L - Astrophys. J., 835, 3-3 (2017/January-3)

Externally heated protostellar cores in the Ophiuchus star-forming region.

LINDBERG J.E., CHARNLEY S.B., JORGENSEN J.K., CORDINER M.A. and BJERKELI P.

Abstract (from CDS):

We present APEX 218 GHz observations of molecular emission in a complete sample of embedded protostars in the Ophiuchus star-forming region. To study the physical properties of the cores, we calculate H2CO and c-C3H2 rotational temperatures, both of which are good tracers of the kinetic temperature of the molecular gas. We find that the H2CO temperatures range between 16 K and 124 K, with the highest H2CO temperatures toward the hot corino source IRAS 16293-2422 (69-124 K) and the sources in the ρ Oph A cloud (23-49 K) located close to the luminous Herbig Be star S1, which externally irradiates the ρ Oph A cores. On the other hand, the c-C3H2 rotational temperature is consistently low (7-17 K) in all sources. Our results indicate that the c-C3H2 emission is primarily tracing more shielded parts of the envelope whereas the H2CO emission (at the angular scale of the APEX beam; 3600 au in Ophiuchus) mainly traces the outer irradiated envelopes, apart from in IRAS 16293-2422, where the hot corino emission dominates. In some sources, a secondary velocity component is also seen, possibly tracing the molecular outflow.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): astrochemistry - ISM: individual objects: Ophiuchus - ISM: molecules - radiative transfer - stars: formation - stars: formation

VizieR on-line data: <Available at CDS (J/ApJ/835/3): table1.dat table3.dat table4.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 60

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Number of rows : 60
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 147889 Y*O 16 25 24.3162969787 -24 27 56.570239619 8.56 8.73 7.90     B2III/IV 449 1
2 GSS 26 Y*O 16 26 10.33152 -24 20 54.8232           M0 76 1
3 [EDJ2009] 800 Y*? 16 26 14.63 -24 25 07.5           ~ 11 0
4 CRBR 2315.8-1700 Y*O 16 26 17.22936 -24 23 45.3660           ~ 39 0
5 GSS 30 Y*O 16 26 21.38160 -24 23 04.0524           ~ 205 1
6 Elia 2-24 TT* 16 26 24.0896068058 -24 16 13.456681632   16.3 14.40 15.81 13.97 K6 136 1
7 [GY92] 30 Y*O 16 26 25.48920 -24 23 01.5576           ~ 40 0
8 ALMA J162625.63-242429.5 Y*O 16 26 25.62 -24 24 28.9           ~ 29 1
9 NAME rho Oph A Cloud MoC 16 26 26.4 -24 22 33           ~ 268 1
10 NAME VLA 1623-243 Y*O 16 26 26.42 -24 24 30.0           ~ 389 0
11 GSS 35 TT* 16 26 34.1750440278 -24 23 28.331873112     16.53 14.75 12.51 B3 227 1
12 [GY92] 91 Y*O 16 26 40.46952 -24 27 14.4720           ~ 67 1
13 VSSG 30 Y*O 16 26 44.19504 -24 34 48.3492           ~ 130 0
14 GSS 39 Y*O 16 26 45.0321556934 -24 23 07.808781522           M0 157 1
15 WL 2 Y*O 16 26 48.48624 -24 28 38.9064           ~ 58 1
16 NAME rho Oph C Cloud MoC 16 26 53.1 -24 32 31           ~ 67 0
17 EM* SR 24B TT* 16 26 58.4363490468 -24 45 32.211217104           M0.5e 80 0
18 WL 22 TT* 16 26 59.16720 -24 34 58.8072           ~ 64 0
19 NAME rho Oph E MoC 16 27 02.0 -24 38 31           ~ 59 0
20 WL 16 Y*O 16 27 02.33520 -24 37 27.2316           A0-F3 155 0
21 [GY92] 197 Y*O 16 27 05.24616 -24 36 29.7936           ~ 63 1
22 WL 17 Y*O 16 27 06.77616 -24 38 14.9964           ~ 92 0
23 Elia 2-29 Y*O 16 27 09.43032 -24 37 18.7716           ~ 274 1
24 NAME rho Oph B Cloud MoC 16 27 11 -24 28.5           ~ 76 1
25 YLW 12A Y*O 16 27 17.57160 -24 28 56.2944           ~ 66 0
26 YLW 13B Y*O 16 27 21.46872 -24 41 43.0692           ~ 89 0
27 BKLT J162721-242728 Y*O 16 27 21.83424 -24 27 27.5868           ~ 19 0
28 CRBR 2422.8-3423 Y*O 16 27 24.61320 -24 41 03.4080           ~ 84 1
29 YLW 15 Y*O 16 27 26.93640 -24 40 50.8224           ~ 247 1
30 YLW 16A Y*O 16 27 28.02744 -24 39 33.5052           K8 187 0
31 Elia 2-32 Y*O 16 27 28.44576 -24 27 21.0348           K6.5 108 1
32 Elia 2-33 Y*O 16 27 30.18024 -24 27 43.3656           M2 112 1
33 [GY92] 301 Y*O 16 27 37.24944 -24 42 38.0160           ~ 35 0
34 NAME rho Oph F MoC 16 27 37.3 -24 42 28           ~ 60 0
35 YLW 45 Y*O 16 27 39.82824 -24 43 15.0672           ~ 111 0
36 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3228 1
37 [SSG2006] MMS126 cor 16 28 21.61 -24 36 23.4           ~ 33 0
38 IRAS 16253-2429 FIR 16 28 22.2 -24 36 31           ~ 33 0
39 BKLT J162858-244054 BD? 16 28 57.86880 -24 40 54.9156           ~ 14 0
40 LDN 1709 DNe 16 31 34.8 -24 02 55           ~ 69 0
41 IRAS 16285-2355 Y*O 16 31 35.65752 -24 01 29.4708           ~ 112 0
42 2MASS J16313679-2404200 Y*O 16 31 36.80 -24 04 20.1           ~ 16 0
43 ISO-Oph 200 Y*O 16 31 43.7601980245 -24 55 24.587358028           ~ 19 0
44 ISO-Oph 202 cor 16 31 52.06 -24 57 26.0           ~ 12 1
45 ISO-Oph 203 Y*O 16 31 52.44696 -24 55 36.0804           ~ 16 0
46 NAME rho Oph South IR 16 31 56.0 -24 56 28           ~ 27 0
47 WLY 2-67 Y*O 16 32 00.99624 -24 56 41.9640           ~ 56 0
48 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1117 1
49 LDN 1689N DNe 16 32 25.96 -24 28 46.2           ~ 111 0
50 2MASS J16335560-2442049 Y*O 16 33 55.6149601032 -24 42 05.006785530           K7 44 0
51 2MASS J18555629-3700066 Y*? 18 55 56.3013045725 -37 00 06.708182958           ~ 3 0
52 2MASS J18594391-3704000 Y*? 18 59 43.9167061113 -37 04 00.176202865           ~ 5 0
53 2MASS J19001553-3657578 Y*O 19 00 15.536 -36 57 57.81           ~ 5 0
54 2MASS J19013357-3700304 Y*O 19 01 33.5769494372 -37 00 30.475478822           M6.5 44 0
55 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 421 0
56 V* R CrA Ae* 19 01 53.6850227874 -36 57 08.145519972 12.781 12.651 11.917 11.242 10.412 B5IIIpe 459 1
57 [FP2007] J190155.61-365651.1 Y*O 19 01 55.61 -36 56 51.0           ~ 7 0
58 [NWA2005] SMM 1B Y*O 19 01 56.41 -36 57 28.0           ~ 83 1
59 [NWA2005] SMM 2 Y*O 19 01 58.55 -36 57 08.7           ~ 17 0
60 [PCB2011] CrA-37 Y*O 19 03 55.24 -37 09 35.9           ~ 4 0

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2021.10.27-05:37:54

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