HST Publication Statistics

These statistics are for HST papers from refereed journals.

• Guest Investigator (GI) paper: At least one author from the paper was an investigator on the original proposal that obtained the data.
• Archival paper: No overlap between the paper authors and investigators on the GI proposal that obtained the data.
• Part GI Part Archive: Multiple programs were used. Overlap of authors with some programs and not with others.
• Programs not Assigned: Insufficient information given in the paper to determine the programs of the data used.

Year GI Archival Part GI Part Archive Programs not Assigned Total 2018 169 170 83 6 428 2017 339 377 171 21 908 2016 333 375 155 20 883 2015 327 356 156 8 847 2014 301 358 140 18 817 2013 279 314 119 73 785 2012 309 361 135 42 847 2011 268 386 112 22 788 2010 259 356 107 12 734 2009 265 300 88 27 680 2008 234 326 77 67 704 2007 266 317 87 58 728 2006 223 295 113 84 715 2005 247 266 120 53 686 2004 238 247 98 28 611 2003 216 270 108 13 607 2002 241 201 99 61 602 2001 262 181 72 44 559 2000 247 182 66 42 537 1999 237 174 53 38 502 1998 278 164 41 26 509 1997 213 118 43 4 378 1996 177 84 35 11 307 1995 162 59 20 3 244 1994 122 39 14 3 178 1993 72 29 8 3 112 1992 34 18 4 2 58 1991 31 9 1 1 42 -- 6349 6332 2325 790 15796

Plot created March 18, 2018

Comparative h‐ and m‐indices for Fifteen Ground‐ and Space‐Based Observatories

Please note: The SOFIA data in this report represents the starting point at first light, Nov 30, 2010. The SOFIA program declared full operations on May 29, 2014. Indices for this relatively young observatory should be measured at a later date for a fuller and more accurate picture of productivity. As a unique airborne observatory, future assessments should measure SOFIA against other observatories while taking into account the available hours for data collection for this unique non-space, non-ground observatory.

h-index for Ground- and Space-Based Observatories through 2016

m-index for Ground- and Space-Based Observatories through 2016

h-index/m-index Comparison of Ground- and Space-Based Observatories through 2016

Telescope/Observatory Comparison through 2016 Telescope/Observatory h-index m-index #yrs since first publication First Scientific paper published Date of Launch/First Light Primary Types(s) Hubble 257 9.88 26 1991 April 24, 1990 multi-wavelength (optical, IR, UV) Keck 228 9.91 23 1994 Keck I May 1993/Keck II Oct 1996 optical/IR VLT/VLTI 193 10.72 18 1999 1998 (Fully operation w/ fourth telescope in 2000) optical Spitzer 185 14.23 13 2004 Aug 25, 2003 IR VLA/JVLA 176 4.29 41 1976 Sept 1975 (Officially dedicated in 1980) radio Chandra 175 10.29 17 2000 July 23, 1999 x-ray XMM-Newton 129 8.06 16 2001 Dec 1999 x-ray/optical Subaru 119 7 17 2000 Jan 1999 optical/IR Gemini 114 6.71 17 2000 1999 Mauna Kea/2000 Chile optical/IR Fermi 106 11.78 9 2008 June 2008 gamma ray Swift 106 8.83 12 2005 Nov 20, 2004 gamma ray/x-ray/UV Kepler/K2 101 12.63 8 2009 March 2009/June 2014 *photometric ALMA 44 8.8 5 2012 Oct 2011 millimeter/submillimeter radiation NuSTAR 32 8 4 2013 June 2012 x-ray SOFIA 15 2.5 6 2011 Nov 30, 2010 (Full operations reached May 29, 2014) IR/submillimeter For further information and discussion of methods, refer to p.1 of the report, Comparative h‐ and m‐indices for Fifteen Ground‐ and Space‐Based Observatories. Questions can be directed to library@stsci.edu.

Number of papers using HST Instruments

Year ACS COS FGS FOC FOS HRS HSP NICMOS STIS WFPC WFPC2 WFC3 2018 204 37 2 2 9 7 0 21 58 0 86 232 2017 480 76 7 2 18 5 1 45 105 8 175 459 2016 497 86 3 6 25 12 0 75 117 1 161 389 2015 482 76 4 3 22 12 0 59 104 3 178 385 2014 432 70 7 3 20 13 1 72 112 4 201 323 2013 421 53 5 3 24 10 0 84 109 5 188 236 2012 473 44 3 4 14 15 0 99 114 3 265 190 2011 458 48 9 8 23 10 0 120 111 10 246 100 2010 428 18 4 7 22 19 1 122 96 9 273 48 2009 433 1 5 3 19 3 0 124 81 4 237 1 2008 405 0 5 5 14 10 0 112 98 6 260 0 2007 379 0 10 7 25 22 0 107 130 5 262 0 2006 297 0 4 12 28 28 1 116 163 8 274 0 2005 205 0 8 4 35 21 0 105 192 6 303 0 2004 122 0 9 12 29 26 2 60 175 5 306 0 2003 27 0 7 10 36 25 1 93 165 9 338 0 2002 1 0 6 10 37 25 0 64 160 5 319 0 2001 0 0 4 12 32 38 3 86 112 3 294 0 2000 0 0 7 2 35 47 1 89 83 7 279 0 1999 0 0 8 20 53 62 2 63 29 4 246 0 1998 0 0 5 15 83 88 2 25 20 18 258 0 1997 0 0 7 35 56 75 1 2 1 25 177 0 1996 0 0 2 23 58 45 4 0 0 30 147 0 1995 0 0 1 32 54 59 5 0 0 48 55 0 1994 0 0 3 29 38 39 4 0 0 53 15 0 1993 0 0 2 24 21 25 4 0 0 39 1 0 1992 0 0 3 14 9 9 0 0 0 22 0 0 1991 0 0 2 11 4 13 0 0 0 10 0 0 -- 5744 509 142 318 843 763 33 1743 2335 350 5544 2363 Note that some papers use more than one instrument and are counted for each instrument. Plots created March 15, 2018

Number of Unique Authors

Year # Authors # First Authors 2018 2964 402 2017 7786 802 2016 4517 798 2015 4191 741 2014 3820 716 2013 3564 704 2012 4089 750 2011 3875 690 2010 3235 649 2009 2740 604 2008 2741 622 2007 2691 641 2006 2437 621 2005 2389 595 2004 2043 527 2003 2015 522 2002 1859 496 2001 1795 467 2000 1699 446 1999 1493 419 1998 1562 431 1997 1115 320 1996 835 253 1995 797 202 1994 589 146 1993 387 98 1992 194 47 1991 149 36 Unique first authors on HST papers: 5981 Unique authors on HST papers: 19277 Plot created March 15, 2018 Author name is defined as last name, first initial. Slight variations in spelling may increase the number of unique names. More common names with the same first initial may result in an undercount. Citations The citations are sum of all citations and the average number of citations for HST Science papers published in that year. The totals for all HST science papers. Year # Citations Avg # Citations # GI Citations Avg # GI Citations # AR Citations Avg # AR citations # Part GI/AR Citations Avg # Part Citations 2018 2048 4 781 4 391 4 2017 10746 11 3665 9 2948 17 2016 15469 17 4848 12 3032 19 2015 21899 24 7114 19 5496 34 2014 26242 30 9210 25 5722 39 2013 31186 37 9208 27 6427 53 2012 35123 39 11847 31 7392 52 2011 39164 46 14360 35 7143 61 2010 38996 48 14634 38 5627 48 2009 36153 49 13567 42 5107 54 2008 39158 53 16160 49 5807 73 2007 46013 62 15995 49 4944 56 2006 44602 60 16509 55 7888 69 2005 40379 58 14293 53 7706 64 2004 42281 66 11505 46 5900 60 2003 42123 66 15053 55 7028 65 2002 37220 60 12219 60 7481 75 2001 35842 63 9824 54 4673 64 2000 29816 55 8697 47 5335 80 1999 29450 57 10017 57 3731 69 1998 41404 81 14322 87 5858 142 1997 25910 68 6915 58 4066 94 1996 24388 79 4568 54 3011 86 1995 15790 64 3024 51 1481 74 1994 11475 64 2732 70 976 69 1993 5884 52 1450 50 393 49 1992 2785 48 589 32 182 45 1991 2442 58 336 37 36 36 Totals 773988 47 253442 39 125781 53