2023PASJ...75.1183I

Query : 2023PASJ...75.1183I

2023PASJ...75.1183I - Publ. Astron. Soc. Jap., 75, 1183-1213 (2023/December-0)

FLASHING: Project overview.

IMAI H., HAMAE Y., AMADA K., NAKASHIMA K., SHUM K.-Y., KASAI R., GOMEZ J.F., USCANGA L., TAFOYA D., OROSZ G. and BURNS R.A.

Abstract (from CDS):

This paper describes an overview of the FLASHING (Finest Legacy Acquisitions of SiO-/H2O-maser Ignitions by the Nobeyama Generation) project promoted using the 45 m telescope of Nobeyama Radio Observatory, which aims to intensively monitor H2O (at 22 GHz) and SiO (at 43 GHz) masers associated with so-called “water fountain” sources. Here we show scientific results based on the data taken in the first five seasons of FLASHING, from 2018 December to 2023 April. We show the evolution of the H2O maser spectra, discovering new spectral components that break the record of the jet's top speed and/or systematic velocity drifts in the spectrum indicating acceleration or deceleration of the maser gas clumps. For the 43 GHz SiO maser emission, we newly detect it in one source and find that it is no longer present in another source. This implies that the jets from these water fountains can be accelerated or decelerated, and show how circumstellar envelopes are destroyed.

Abstract Copyright: © The Author(s) 2023. Published by Oxford University Press on behalf of the Astronomical Society of Japan.

Journal keyword(s): masers - stars: AGB and post-AGB - stars: jets - stars: mass loss - stars: winds and outflows

Simbad objects: 25

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Number of rows : 25
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 NGC 3132 PN 10 07 01.7656422504 -40 26 11.130553032   10.14 10.01     A2V 423 1
2 V* S CrB Mi* 15 21 23.9553294936 +31 22 02.584877304 7.51 7.15 5.80 8.12   M6.5-8e 364 0
3 IRAS 16552-3050 pA? 16 58 27.31 -30 55 07.9           ~ 35 1
4 IRAS 17021-3109 OH* 17 05 23.71800 -31 13 18.7320           O-rich 10 0
5 IRAS 17291-2147 AB? 17 32 11.1780708672 -21 50 02.311501704         15.69 ~ 13 0
6 IRAS 17348-2906 OH* 17 38 03.9222596040 -29 08 16.498404744         13.65 O-rich 11 0
7 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
8 IRAS 18043-2116 OH* 18 07 20.86584 -21 16 12.1116           O-rich 45 0
9 IRAS 18056-1514 OH* 18 08 28.39512 -15 13 28.3872           O-rich 13 0
10 IRAS 18113-2503 pA? 18 14 26.70240 -25 02 55.5792           ~ 34 0
11 OH 012.8-00.9 OH* 18 16 49.21368 -18 15 01.6560           O-rich 54 0
12 OH 020.6+00.3 OH* 18 27 56.34144 -10 46 54.0804           O-rich 19 0
13 IRAS 18286-0959 pA* 18 31 22.94232 -09 57 21.3948           O-rich 42 0
14 OH 016.3-03.0 OH* 18 31 31.4874347184 -16 08 46.185345528           O-rich 15 1
15 W 43 SFR 18 47 32 -01 56.5           ~ 604 0
16 OH 031.0+00.0 OH* 18 47 41.13768 -01 45 11.4048           O-rich 153 1
17 IRAS 18455+0448 OH* 18 48 02.3030850840 +04 51 30.484399068           O-rich 30 0
18 OH 031.0-00.2 OH* 18 48 43.01976 -01 48 30.1464           O-rich 57 0
19 OH 037.1-00.8 OH* 19 02 06.28560 +03 20 15.9900           O-rich 77 0
20 OH 042.3-00.1 OH* 19 09 08.32632 +08 16 33.6504           O-rich 90 0
21 IRAS 19134+2131 pA* 19 15 35.2042352712 +21 36 33.834328956           ~ 68 0
22 IRAS 19190+1102 pA? 19 21 25.14600 +11 08 41.4708           ~ 29 0
23 PN K 3-35 PN 19 27 43.9749997920 +21 30 02.907990216           O-rich 161 0
24 IRAS 19312+1950 Y*O 19 33 24.24888 +19 56 55.6512           ~ 60 0
25 IRAS 19356+0754 pA? 19 38 01.1766254640 +08 01 32.990079972           ~ 13 1

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