2026ApJ...999L...3M

Query : 2026ApJ...999L...3M

2026ApJ...999L...3M - Astrophys. J., 999, L3 (2026/March-1)

Discovery of Multiple Ultra-broad-velocity Molecular Features Associated with the W44 Molecular Cloud.

MAKITA M., OKA T., TSUJIMOTO S. and KOTANI T.

Abstract (from CDS):

We report the discovery of multiple compact molecular features exhibiting extremely broad velocity widths toward the W44 molecular cloud. Atacama Large Millimeter/submillimeter Array CO J = 3-2 data reveal eight “Petit-Bullets” surrounding the previously known “Bullet.” Each Petit-Bullet shows a distinct V-shaped structure in position-velocity space, reminiscent of the Y-shaped morphology of the Bullet, suggesting a common origin. These features are interpreted as the result of high-velocity plunges of compact gravitational objects into dense molecular gas. The spatial and kinematic properties of the Petit-Bullets suggest that the plunging material was not a single object but rather a small cluster of compact bodies. A virial mass of 1.0 × 10⁵M_⊙ inferred from their velocity dispersion is comparable to that of typical globular clusters. Momentum analysis further implies that the main Bullet likely formed by an isolated black hole. These findings provide new evidence for dynamical interactions between halo clusters and disk molecular gas.

Journal keyword(s): Interstellar medium - Interstellar molecules - Supernova remnants

Simbad objects: 1

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Number of rows : 1

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	SNR G034.6-00.5	SNR	18 56 10.650	+01 13 21.30						~	1034	2

Query : 2026ApJ...999L...3M

Basic data :

SNR G034.6-00.5 -- SuperNova Remnant
Other object types:	`Rad (ASB,3C,...)`, `gam (1AGL,2AGL,...)`, `SNR (2010ApJS,SNR,...)`, `X (2E,1ES,...)`, `HII (2012MNRAS,[ADD2012])`
ICRS coord. (ep=J2000) :	`18 56 10.650 +01 13 21.30 [ ] D 2015ApJS..217....2M`
FK4 coord. (ep=B1950 eq=1950) :	`18 53 38.216 +01 09 23.46 [ ]`
Gal coord. (ep=J2000) :	`034.560340 -00.496799 [ ]`
Angular size (arcmin):	`35.0 27.0 ~ (Rad) D` `2014BASI...42...47G`

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`SNR G034.6-00.5`	`2E 4163`	`3FHL J1855.9+0121e`	`MSH 18+0-11`
`1AGL J1857+0137`	`2E 1853.3+0119`	`GAL 034.7-00.4`	`NEK 34.7-00.4`
`2AGL J1856+0119e`	`2EG J1857+0118`	`GeV J1856+0115`	`NRAO 585`
`AJG 91`	`3EG J1856+0114`	`GPS 1853+014`	`SNR G034.7-00.4`
`ASB 47`	`1ES 1853+01.2`	`GPSR 034.928-0.387`	`W 44`
`3C 392.0`	`0FGL J1855.9+0126`	`GRO J1853+01`	`[ADD2012] SNR 15`
`3C 392`	`1FGL J1856.1+0122`	`GRS G034.60 -00.50`	`[ADD2012] HII 30`
`4C 01.57`	`2FGL J1855.9+0121e`	`GRS G034.70 -00.40`	`[DGW65] 114`
`3CR 392`	`3FGL J1855.9+0121e`	`Kes 80`	`[HC69] 14`
`CTA 83`	`4FGL J1855.9+0121e`	`LMH 37`
`CTB 60`	`1FHL J1855.9+0121`	`MM 38`

References (1034 between 1850 and 2026) (Total 1034)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : SNR G034.6-00.5

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`3C 392.0`	`3C 392`	`4C 01.57`	`3CR 392`	`2E 4163`
`3EG J1856+0114`

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