2023ApJ...958..111B

Query : 2023ApJ...958..111B

2023ApJ...958..111B - Astrophys. J., 958, 111 (2023/December-1)

Chemical Evolution of Some Selected Complex Organic Molecules in Low-mass Star-forming Regions.

BHAT B., KAR R., MONDAL S.K., GHOSH R., GORAI P., SHIMONISHI T., TANAKA K.E.I., FURUYA K. and DAS A.

Abstract (from CDS):

The destiny of complex organic molecules (COMs) in star-forming regions is interlinked with various evolutionary phases. Therefore, identifying these species in diversified environments of identical star-forming regions would help to understand their physical and chemical heritage. We identified multiple COMs utilizing the Large Program Astrochemical Surveys At Institut de Radio Astronomie Millimétrique (IRAM) data, dedicated to chemical surveys in Sun-like star-forming regions with the IRAM 30 m telescope. It was an unbiased survey in the millimeter regime, covering the prestellar core, protostar, outflow region, and protoplanetary disk phase. Here, we report the transitions of seven COMs, namely, methanol (CH3OH), acetaldehyde (CH3CHO), methyl formate (CH3OCHO), ethanol (C2H5OH), propynal (HCCCHO), dimethyl ether (CH3OCH3), and methyl cyanide (CH3CN) in sources L1544, B1-b, IRAS4A, and SVS13A. We found a trend among these species from the derived abundances using the rotational diagram method and Monte Carlo Markov chain fitting. We have found that the abundances of all of the COMs, except for HCCCHO, increase from the L1544 (prestellar core) and peaks at IRAS16293-2422 (class 0 phase). It is noticed that the abundance of these molecules correlates with the luminosity of the sources. The obtained trend is also visible from the previous interferometric observations and considering the beam dilution effect.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Astrochemistry - Star forming regions - Interstellar medium - Interstellar molecules - Interstellar abundances

Simbad objects: 33

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Number of rows : 33
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 513 3
2 NAME HH 7-11 MMS 3 smm 03 29 01.964 +31 15 38.04           ~ 69 0
3 NAME HH 7-11 MMS 2 smm 03 29 03.056 +31 15 51.67           ~ 95 0
4 [RAC97] VLA 4a Rad 03 29 03.715 +31 16 04.14           ~ 38 0
5 [HSW2018] NGC 1333-17 smm 03 29 03.73 +31 16 03.8           ~ 131 0
6 [RAC97] VLA 4b Rad 03 29 03.740 +31 16 04.15           ~ 41 0
7 V* V512 Per Or* 03 29 03.7578170808 +31 16 03.947525688           M3.5 419 0
8 NAME HH 7-11 FIR 03 29 03.9 +31 16 06           ~ 357 0
9 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
10 [JCC87] IRAS 4A2 Y*O 03 29 10.430 +31 13 32.08           ~ 141 1
11 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 770 1
12 [JCC87] IRAS 4A1 Y*O 03 29 10.538 +31 13 30.93           ~ 127 1
13 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 625 0
14 Barnard 1 MoC 03 33 16.3 +31 07 51           ~ 350 0
15 [HKM99] B1-bW PoC 03 33 20.0 +31 07 20           ~ 9 0
16 [HKM99] B1-b cor 03 33 20.32 +31 07 21.5           ~ 242 0
17 [HRF2005] 3 PoC 03 33 21.3 +31 07 27           ~ 86 0
18 [KJD2006] SMM J033335+31075 PoC 03 33 21.3 +31 07 28           ~ 118 0
19 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
20 LDN 1498 DNe 04 11.0 +24 58           ~ 306 0
21 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
22 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1872 0
23 LDN 1512 MoC 05 04 09.7 +32 43 09           ~ 184 0
24 LDN 1544 DNe 05 04 16.6 +25 10 48           ~ 965 0
25 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
26 HH 212 HH 05 43 51.41 -01 02 53.1           ~ 443 1
27 LDN 183 MoC 15 54 12.2 -02 49 42           ~ 799 1
28 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
29 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1357 1
30 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
31 LDN 483 DNe 18 17 35 -04 39.8           ~ 359 0
32 LDN 663 DNe 19 36 55 +07 34.4           ~ 698 0
33 NAME LDN 1157-mm Y*O 20 39 06.2 +68 02 15           ~ 204 0

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