Class information for:
Level 1: STARS FORMATION//MASERS//H II REGIONS

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
224 3881 42.5 72%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
19 4 ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 523489
19 3       ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 118981
38 2             STARS FORMATION//ISM CLOUDS//ISM MOLECULES 31753
224 1                   STARS FORMATION//MASERS//H II REGIONS 3881

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 STARS FORMATION authKW 3097097 48% 21% 1870
2 MASERS authKW 2089350 17% 41% 643
3 H II REGIONS authKW 1877857 20% 31% 774
4 RADIO LINES ISM authKW 1036880 13% 26% 513
5 ISM MOLECULES authKW 794312 20% 13% 795
6 ISM CLOUDS authKW 560634 15% 12% 598
7 ISM JETS AND OUTFLOWS authKW 462537 11% 13% 440
8 ISM HII REGIONS authKW 359054 4% 34% 136
9 RADIOASTRON ASTROFIS address 262840 3% 25% 135
10 ISM KINEMATICS AND DYNAMICS authKW 259409 7% 13% 261

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Astronomy & Astrophysics 229123 99% 1% 3838
2 Engineering, Aerospace -5 0% 0% 2
3 Multidisciplinary Sciences -9 0% 0% 1
4 Physics, Fluids & Plasmas -21 0% 0% 1
5 Geochemistry & Geophysics -25 0% 0% 2
6 Meteorology & Atmospheric Sciences -28 0% 0% 1
7 Biology -28 0% 0% 1
8 Instruments & Instrumentation -32 0% 0% 2
9 Physics, Multidisciplinary -35 1% 0% 24
10 Mathematics, Applied -44 0% 0% 7

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 RADIOASTRON ASTROFIS 262840 3% 25% 135
2 MIZUSAWA VLBI OBSERV 159238 1% 45% 45
3 ASTRON 110367 24% 2% 940
4 AUSTRALIA TELESCOPE IL 84756 3% 9% 120
5 MIZUSAWA KU 74247 1% 39% 24
6 QINGHAI STN 73211 0% 85% 11
7 RADIO ASTRON 65109 3% 8% 103
8 PURPLE MT OBSERV 59049 3% 7% 114
9 ASTRO SPACE 51402 2% 9% 70
10 ASTROPHYS 48702 8% 2% 293

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 ASTRONOMY & ASTROPHYSICS 150194 25% 2% 981
2 ASTROPHYSICAL JOURNAL 142282 31% 2% 1191
3 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 52395 14% 1% 543
4 ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 34293 4% 3% 143
5 ASTRONOMY REPORTS 25031 2% 4% 80
6 ASTRONOMICAL JOURNAL 19448 5% 1% 189
7 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 15207 2% 2% 86
8 ASTROPHYSICAL JOURNAL LETTERS 11376 2% 2% 95
9 ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 9008 2% 2% 65
10 IAU SYMPOSIA 7756 2% 1% 89

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class		 LCSH search Wikipedia search
1 STARS FORMATION 3097097 48% 21% 1870 Search STARS+FORMATION Search STARS+FORMATION
2 MASERS 2089350 17% 41% 643 Search MASERS Search MASERS
3 H II REGIONS 1877857 20% 31% 774 Search H+II+REGIONS Search H+II+REGIONS
4 RADIO LINES ISM 1036880 13% 26% 513 Search RADIO+LINES+ISM Search RADIO+LINES+ISM
5 ISM MOLECULES 794312 20% 13% 795 Search ISM+MOLECULES Search ISM+MOLECULES
6 ISM CLOUDS 560634 15% 12% 598 Search ISM+CLOUDS Search ISM+CLOUDS
7 ISM JETS AND OUTFLOWS 462537 11% 13% 440 Search ISM+JETS+AND+OUTFLOWS Search ISM+JETS+AND+OUTFLOWS
8 ISM HII REGIONS 359054 4% 34% 136 Search ISM+HII+REGIONS Search ISM+HII+REGIONS
9 ISM KINEMATICS AND DYNAMICS 259409 7% 13% 261 Search ISM+KINEMATICS+AND+DYNAMICS Search ISM+KINEMATICS+AND+DYNAMICS
10 STARS MASSIVE 248629 4% 20% 158 Search STARS+MASSIVE Search STARS+MASSIVE

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 VARRICATT, WP , DAVIS, CJ , RAMSAY, S , TODD, SP , (2010) A NEAR-IR IMAGING SURVEY OF INTERMEDIATE- AND HIGH-MASS YOUNG STELLAR OUTFLOW CANDIDATES.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 404. ISSUE 2. P. 661 -720 175 83% 38
2 VORONKOV, MA , CASWELL, JL , ELLINGSEN, SP , GREEN, JA , BREEN, SL , (2014) SOUTHERN CLASS I METHANOL MASERS AT 36 AND 44 GHZ.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 439. ISSUE 3. P. 2584-2617 108 96% 17
3 WIENEN, M , WYROWSKI, F , MENTEN, KM , URQUHART, JS , CSENGERI, T , WALMSLEY, CM , BONTEMPS, S , RUSSEIL, D , BRONFMAN, L , KORIBALSKI, BS , ET AL (2015) ATLASGAL - KINEMATIC DISTANCES AND THE DENSE GAS MASS DISTRIBUTION OF THE INNER GALAXY.ASTRONOMY & ASTROPHYSICS. VOL. 579. ISSUE . P. - 122 75% 6
4 CYGANOWSKI, CJ , BROGAN, CL , HUNTER, TR , CHURCHWELL, E , (2009) A CLASS I AND CLASS II CH3OH MASER SURVEY OF EGOS FROM THE GLIMPSE SURVEY.ASTROPHYSICAL JOURNAL. VOL. 702. ISSUE 2. P. 1615 -1647 99 93% 106
5 ARMENTROUT, WP , JOHNSTONE, BM , WENGER, TV , CUNNINGHAM, V , BALSER, DS , BANIA, TM , ANDERSON, LD , (2014) THE WISE CATALOG OF GALACTIC H II REGIONS.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES. VOL. 212. ISSUE 1. P. - 94 84% 34
6 BELTRAN, MT , DE WIT, WJ , (2016) ACCRETION DISKS IN LUMINOUS YOUNG STELLAR OBJECTS.ASTRONOMY AND ASTROPHYSICS REVIEW. VOL. 24. ISSUE . P. - 153 49% 4
7 HOU, LG , HAN, JL , (2014) THE OBSERVED SPIRAL STRUCTURE OF THE MILKY WAY.ASTRONOMY & ASTROPHYSICS. VOL. 569. ISSUE . P. - 127 64% 23
8 GARAY, G , LIZANO, S , (1999) MASSIVE STARS: THEIR ENVIRONMENT AND FORMATION.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC. VOL. 111. ISSUE 763. P. 1049 -1087 153 63% 226
9 CYGANOWSKI, CJ , KODA, J , ROSOLOWSKY, E , TOWERS, S , MEYER, JD , EGUSA, F , MOMOSE, R , ROBITAILLE, TP , (2013) A WATER MASER AND NH3 SURVEY OF GLIMPSE EXTENDED GREEN OBJECTS.ASTROPHYSICAL JOURNAL. VOL. 764. ISSUE 1. P. - 83 90% 15
10 ZHANG, QZ , WANG, K , LU, X , JIMENEZ-SERRA, I , (2015) FRAGMENTATION OF MOLECULAR CLUMPS AND FORMATION OF A PROTOCLUSTER.ASTROPHYSICAL JOURNAL. VOL. 804. ISSUE 2. P. - 84 76% 12

Classes with closest relation at Level 1


Rank Class id link
1 15017 ISM GLOBULES//ISM INDIVIDUAL OBJECTS NGC 3372//H II REGIONS
2 1744 ISM JETS AND OUTFLOWS//ISM HERBIG HARO OBJECTS//HERBIG HARO OBJECTS
3 6429 ISM INDIVIDUAL ORION NEBULA//ISM INDIVIDUAL OBJECTS ORION NEBULA//H II REGIONS
4 1170 STARS FORMATION//ISM CLOUDS//ISM GLOBULES
5 27634 RADIO RECOMBINATION LINES//CII REGIONS//ASTRON TECH STR 25
6 21860 GALAXIES INDIVIDUAL NGC 4258//GALAXIES INDIVIDUAL NGC 3079//MASERS
7 3545 ISM CLOUDS//ISM STRUCTURE//ISM KINEMATICS AND DYNAMICS
8 15025 ISM MAGNETIC FIELDS//POLARIZATION//DUST EXTINCTION
9 21451 ISM BUBBLES//STARS INDIVIDUAL HD 56925//STARS WOLF RAYET
10 864 ASTROCHEMISTRY//ISM MOLECULES//MOLECULAR PROCESSES

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