Open Access Policy Deposits

eScholarship stats: History by Item for March through June, 2026

Item	Title	Total requests	2026-06	2026-05	2026-04	2026-03
9j80t4m1	The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra	928	262	244	199	223
5qs0n1bc	Innovations and advances in instrumentation at the W. M. Keck Observatory, vol. III	383	89	120	105	69
2qw2m22g	The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar, and APOGEE-2 Data	382	109	93	96	84
4058w3z1	Final Targeting Strategy for the Sloan Digital Sky Survey IV Apache Point Observatory Galactic Evolution Experiment 2 North Survey	311	105	107	61	38
11f44236	THE DEEP2 GALAXY REDSHIFT SURVEY: DESIGN, OBSERVATIONS, DATA REDUCTION, AND REDSHIFTS**Based on observations taken at the W. M. Keck Observatory, which is operated jointly by the University of California and the California Institute of Technology, and on observations made with the NASA/ESO Hubble Space Telescope, obtained from the data archives at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555, and from the Canadian Astronomy Data Centre.	284	59	103	69	53
44b7j2bq	The Lick AGN Monitoring Project 2016: Velocity-resolved Hβ Lags in Luminous Seyfert Galaxies	283	28	55	53	147
7zs2q9fv	Inferring the intergalactic medium neutral fraction at z ∼ 6–8 with low-luminosity Lyman break galaxies	277	66	100	71	40
1pm0r30z	The Keck/DEIMOS Stellar Archive. I. Uniform Velocities and Metallicities for 78 Milky Way Dwarf Galaxies and Globular Clusters	265	25	77	56	107
4d77d3hk	The HETDEX Instrumentation: Hobby–Eberly Telescope Wide-field Upgrade and VIRUS	263	66	65	70	62
9fp0m8s1	The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA-derived Quantities, Data Visualization Tools, and Stellar Library	258	64	85	55	54
77f6c5hq	SDSS-IV MaNGA: How the Stellar Populations of Passive Central Galaxies Depend on Stellar and Halo Mass	251	81	48	71	51
1j62j00j	PypeIt: The Python Spectroscopic Data Reduction Pipeline	228	33	81	56	58
7m06d2jp	GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI	226	45	73	66	42
8646z73c	Improved Cosmological Constraints from New, Old, and Combined Supernova Data Sets	213	59	71	48	35
5616n854	The Draco Dwarf Spheroidal Galaxy in the First Year of Dark Energy Spectroscopic Instrument Data	211	24	85	49	53
7h46n1q2	Lick Observatory Supernova Search follow-up program: photometry data release of 93 Type Ia supernovae	208	68	54	47	39
38s3v07s	The Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) Survey Design, Reductions, and Detections* * Based on observations obtained with the Hobby–Eberly Telescope, which is a joint project of the University of Texas at Austin, the Pennsylvania State University, Ludwig-Maximilians-Universität München, and Georg-August-Universität Göttingen.	205	49	53	61	42
0v44n629	Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe	198	41	65	45	47
5st188ws	The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-resolved Hβ Lags in Luminous Seyfert Galaxies	187	15	39	35	98
90d3n6hc	Structural and Star-forming Relations since z similar to 3: Connecting Compact Star-forming and Quiescent Galaxies	185	26	77	43	39
21g9j2dv	Keck adaptive secondary mirror overview	184	31	64	43	46
0734s9bj	SATELLITE QUENCHING AND GALACTIC CONFORMITY AT 0.3 < z < 2.5* * This paper includes data gathered with the 6.5 meter Magellan Telescopes located at Las Campanas Observatory, Chile.	177	31	70	38	38
0d12843b	Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548	171	29	71	39	32
9j94n9g9	Analysis of Neptune’s 2017 bright equatorial storm	169	23	65	39	42
1725d2v2	The size and pervasiveness of Ly α–UV spatial offsets in star-forming galaxies at z ∼ 6	159	27	50	42	40
6d71m0bj	The Sloan Digital Sky Survey quasar catalog: tenth data release	154	31	41	41	41
9g73718t	Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the Ultraviolet Anomaly in NGC 5548 with X-Ray Spectroscopy	154	30	54	37	33
1qh5b3v0	Commissioning ShARCS: the Shane Adaptive optics infraRed Camera-Spectrograph for the Lick Observatory 3-m telescope	147	30	45	42	30
16x0j072	Deep ugrizY imaging and DEEP2/3 spectroscopy: a photometric redshift testbed for LSST and public release of data from the DEEP3 Galaxy Redshift Survey	143	26	48	36	33
2pj2g2h0	THE LICK AGN MONITORING PROJECT 2011: SPECTROSCOPIC CAMPAIGN AND EMISSION-LINE LIGHT CURVES	143	27	44	37	35
5n19f64n	Stability of the Broad-line Region Geometry and Dynamics in Arp 151 Over Seven Years	143	33	38	36	36
1844r5rs	SUB-KILOPARSEC ALMA IMAGING OF COMPACT STAR-FORMING GALAXIES AT z ∼ 2.5: REVEALING THE FORMATION OF DENSE GALACTIC CORES IN THE PROGENITORS OF COMPACT QUIESCENT GALAXIES	142	20	52	33	37
1h21b72k	Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum	140	20	55	33	32
5mc2h72z	Space Telescope and Optical Reverberation Mapping Project. IX. Velocity–Delay Maps for Broad Emission Lines in NGC 5548	140	34	34	33	39
8v69h64n	The detection of intergalactic H α emission from the Slug Nebula at z ∼ 2.3	139	28	45	34	32
2mv66329	Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548	137	20	56	30	31
54d8z4h9	CANDELS Multi-wavelength Catalogs: Source Identification and Photometry in the CANDELS Extended Groth Strip	132	13	44	40	35
92r7x51m	The Type Ia Supernova 1999aw: A Probable 1999aa-like Event in a Low-Luminosity Host Galaxy	132	22	51	33	26
00r9191z	A candidate super-Earth planet orbiting near the snow line of Barnard’s star	131	23	53	20	35
3rt576z3	The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-Resolved H\b{eta} Lags in Luminous Seyfert Galaxies	131	19	41	13	58
7kn6z3zw	HALO7D II: The Halo Velocity Ellipsoid and Velocity Anisotropy with Distant Main-sequence Stars	131	29	27	41	34
9n74h9fq	Performance of Kitt Peak’s Mayall 4-meter telescope during DESI commissioning	131	22	25	46	38
2jg8m6t2	STELLAR MASS–GAS-PHASE METALLICITY RELATION AT 0.5 ≤ z ≤ 0.7: A POWER LAW WITH INCREASING SCATTER TOWARD THE LOW-MASS REGIME	130	36	18	30	46
1f8401t6	IMPROVED STANDARDIZATION OF TYPE II-P SUPERNOVAE: APPLICATION TO AN EXPANDED SAMPLE	129	27	41	33	28
804073m6	The Lick AGN Monitoring Project 2011: Dynamical Modeling of the Broad-line Region	129	17	39	32	41
899861jd	BROAD-LINE REVERBERATION IN THE KEPLER-FIELD SEYFERT GALAXY Zw 229-015	120	22	37	33	28
20s178w7	Three’s Company: An Additional Non-transiting Super-Earth in the Bright HD 3167 System, and Masses for All Three Planets	117	19	26	30	42
8ff3d7x3	Effects of Stellar Feedback on Stellar and Gas Kinematics of Star-forming Galaxies at 0.6 < z < 1.0	116	12	50	27	27
91w478p4	The growth of the central region by acquisition of counterrotating gas in star-forming galaxies	116	16	34	32	34
0w29b2rv	EVOLUTION OF INTRINSIC SCATTER IN THE SFR–STELLAR MASS CORRELATION AT 0.5 < z < 3	115	14	50	27	24

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